diff --git a/stm/Makefile b/stm/Makefile
index 26e1ed6625c8fb4ef1eb1e292abd0ccfef2cff62..dace8cb6cf7ac058170108d5d9b76c0bed564a7f 100644
--- a/stm/Makefile
+++ b/stm/Makefile
@@ -24,8 +24,8 @@ SRC_C = \
 	systick.c  \
 	stm32fxxx_it.c \
 	usb.c \
+	sdio.c \
 	lexerstm.c \
-#	sd.c \
 
 SRC_S = \
 	startup_stm32f40xx.s \
@@ -63,6 +63,7 @@ SRC_STM = \
 	stm32f4xx_exti.c \
 	stm32f4xx_gpio.c \
 	stm32f4xx_tim.c \
+	stm32f4xx_sdio.c \
 	stm_misc.c \
 	usb_core.c \
 	usb_dcd.c \
@@ -79,16 +80,8 @@ SRC_STM = \
 	usbd_msc_data.c \
 	usbd_msc_scsi.c \
 	usbd_storage_msd.c \
-
-# not needed
-#	usb_otg.c \
-#	usb_hcd.c \
-#	usb_hcd_int.c \
-
-# for SD card
-#	stm32f4xx_sdio.c \
-#	stm324x7i_eval.c \
-#	stm324x7i_eval_sdio_sd.c \
+	stm324x7i_eval.c \
+	stm324x7i_eval_sdio_sd.c \
 
 OBJ = $(addprefix $(BUILD)/, $(SRC_C:.c=.o) $(SRC_S:.s=.o) $(PY_O) $(SRC_FATFS:.c=.o) $(SRC_STM:.c=.o))
 
diff --git a/stm/lib/stm324x7i_eval.c b/stm/lib/stm324x7i_eval.c
new file mode 100644
index 0000000000000000000000000000000000000000..02b8964b10db24bc25f8d43836d456f31762cdcd
--- /dev/null
+++ b/stm/lib/stm324x7i_eval.c
@@ -0,0 +1,361 @@
+/**
+  ******************************************************************************
+  * @file    STM324x7i_eval.c
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    11-January-2013
+  * @brief   This file provides
+  *            - set of firmware functions to manage Leds, push-button and COM ports
+  *            - low level initialization functions for SD card (on SDIO) and
+  *              serial EEPROM (sEE)
+  *          available on STM324x7I-EVAL evaluation board(MB786) from
+  *          STMicroelectronics.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+  
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_dma.h"
+#include "stm32f4xx_exti.h"
+#include "stm32f4xx_gpio.h"
+#include "stm32f4xx_rcc.h"
+#include "stm32f4xx_sdio.h"
+//#include "stm32f4xx_syscfg.h"
+#include "stm_misc.h"
+#include "stm324x7i_eval.h"
+//#include "stm32f4xx_i2c.h"
+
+/** @addtogroup Utilities
+  * @{
+  */ 
+
+/** @addtogroup STM32_EVAL
+  * @{
+  */ 
+
+/** @addtogroup STM324x7I_EVAL
+  * @{
+  */   
+    
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL 
+  * @brief This file provides firmware functions to manage Leds, push-buttons, 
+  *        COM ports, SD card on SDIO and serial EEPROM (sEE) available on 
+  *        STM324x7I-EVAL evaluation board from STMicroelectronics.
+  * @{
+  */ 
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_TypesDefinitions
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_Defines
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_Variables
+  * @{
+  */ 
+#if 0
+GPIO_TypeDef* GPIO_PORT[LEDn] = {LED1_GPIO_PORT, LED2_GPIO_PORT, LED3_GPIO_PORT,
+                                 LED4_GPIO_PORT};
+const uint16_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN,
+                                 LED4_PIN};
+const uint32_t GPIO_CLK[LEDn] = {LED1_GPIO_CLK, LED2_GPIO_CLK, LED3_GPIO_CLK,
+                                 LED4_GPIO_CLK};
+
+GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {WAKEUP_BUTTON_GPIO_PORT, TAMPER_BUTTON_GPIO_PORT,
+                                      KEY_BUTTON_GPIO_PORT}; 
+
+const uint16_t BUTTON_PIN[BUTTONn] = {WAKEUP_BUTTON_PIN, TAMPER_BUTTON_PIN,
+                                      KEY_BUTTON_PIN}; 
+
+const uint32_t BUTTON_CLK[BUTTONn] = {WAKEUP_BUTTON_GPIO_CLK, TAMPER_BUTTON_GPIO_CLK,
+                                      KEY_BUTTON_GPIO_CLK};
+
+const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {WAKEUP_BUTTON_EXTI_LINE,
+                                            TAMPER_BUTTON_EXTI_LINE, 
+                                            KEY_BUTTON_EXTI_LINE};
+
+const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PORT_SOURCE,
+                                              TAMPER_BUTTON_EXTI_PORT_SOURCE, 
+                                              KEY_BUTTON_EXTI_PORT_SOURCE};
+								 
+const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PIN_SOURCE,
+                                             TAMPER_BUTTON_EXTI_PIN_SOURCE, 
+                                             KEY_BUTTON_EXTI_PIN_SOURCE}; 
+const uint16_t BUTTON_IRQn[BUTTONn] = {WAKEUP_BUTTON_EXTI_IRQn, TAMPER_BUTTON_EXTI_IRQn,
+                                       KEY_BUTTON_EXTI_IRQn};
+
+GPIO_TypeDef* COM_TX_PORT[COMn] = {EVAL_COM1_TX_GPIO_PORT};
+ 
+GPIO_TypeDef* COM_RX_PORT[COMn] = {EVAL_COM1_RX_GPIO_PORT};
+
+const uint32_t COM_TX_PORT_CLK[COMn] = {EVAL_COM1_TX_GPIO_CLK};
+ 
+const uint32_t COM_RX_PORT_CLK[COMn] = {EVAL_COM1_RX_GPIO_CLK};
+
+const uint16_t COM_TX_PIN[COMn] = {EVAL_COM1_TX_PIN};
+
+const uint16_t COM_RX_PIN[COMn] = {EVAL_COM1_RX_PIN};
+ 
+const uint16_t COM_TX_PIN_SOURCE[COMn] = {EVAL_COM1_TX_SOURCE};
+
+const uint16_t COM_RX_PIN_SOURCE[COMn] = {EVAL_COM1_RX_SOURCE};
+ 
+const uint16_t COM_TX_AF[COMn] = {EVAL_COM1_TX_AF};
+ 
+const uint16_t COM_RX_AF[COMn] = {EVAL_COM1_RX_AF};
+
+DMA_InitTypeDef    sEEDMA_InitStructure; 
+NVIC_InitTypeDef   NVIC_InitStructure;
+#endif
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_FunctionPrototypes
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Private_Functions
+  * @{
+  */ 
+
+/**
+  * @brief  DeInitializes the SDIO interface.
+  * @param  None
+  * @retval None
+  */
+void SD_LowLevel_DeInit(void)
+{
+  GPIO_InitTypeDef  GPIO_InitStructure;
+  
+  /*!< Disable SDIO Clock */
+  SDIO_ClockCmd(DISABLE);
+  
+  /*!< Set Power State to OFF */
+  SDIO_SetPowerState(SDIO_PowerState_OFF);
+
+  /*!< DeInitializes the SDIO peripheral */
+  SDIO_DeInit();
+  
+  /* Disable the SDIO APB2 Clock */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, DISABLE);
+
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_MCO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_MCO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_MCO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_MCO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_MCO);
+  GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_MCO);
+
+  /* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
+  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+  /* Configure PD.02 CMD line */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+  GPIO_Init(GPIOD, &GPIO_InitStructure);
+
+  /* Configure PC.12 pin: CLK pin */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+}
+
+/**
+  * @brief  Initializes the SD Card and put it into StandBy State (Ready for 
+  *         data transfer).
+  * @param  None
+  * @retval None
+  */
+void SD_LowLevel_Init(void)
+{
+  GPIO_InitTypeDef  GPIO_InitStructure;
+
+  /* GPIOC and GPIOD Periph clock enable */
+  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD | SD_DETECT_GPIO_CLK, ENABLE);
+
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_SDIO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_SDIO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_SDIO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_SDIO);
+  GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_SDIO);
+  GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_SDIO);
+
+  /* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
+  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
+  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+  /* Configure PD.02 CMD line */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+  GPIO_Init(GPIOD, &GPIO_InitStructure);
+
+  /* Configure PC.12 pin: CLK pin */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
+  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+  
+  /*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
+  // dpgeorge: switch is normally open, connected to VDD when card inserted
+  GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
+  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
+  GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
+
+  /* Enable the SDIO APB2 Clock */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);
+
+  /* Enable the DMA2 Clock */
+  RCC_AHB1PeriphClockCmd(SD_SDIO_DMA_CLK, ENABLE);
+}
+
+/**
+  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.
+  * @param  BufferSRC: pointer to the source buffer
+  * @param  BufferSize: buffer size
+  * @retval None
+  */
+void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize)
+{
+  DMA_InitTypeDef SDDMA_InitStructure;
+
+  DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);
+
+  /* DMA2 Stream3  or Stream6 disable */
+  DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);
+
+  /* DMA2 Stream3  or Stream6 Config */
+  DMA_DeInit(SD_SDIO_DMA_STREAM);
+
+  SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
+  SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
+  SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferSRC;
+  SDDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
+  SDDMA_InitStructure.DMA_BufferSize = BufferSize;
+  SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+  SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+  SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+  SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+  SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+  SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
+  SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
+  SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
+  SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
+  DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
+  DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
+  DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);
+
+  /* DMA2 Stream3  or Stream6 enable */
+  DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
+    
+}
+
+/**
+  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.
+  * @param  BufferDST: pointer to the destination buffer
+  * @param  BufferSize: buffer size
+  * @retval None
+  */
+void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize)
+{
+  DMA_InitTypeDef SDDMA_InitStructure;
+
+  DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);
+
+  /* DMA2 Stream3  or Stream6 disable */
+  DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);
+
+  /* DMA2 Stream3 or Stream6 Config */
+  DMA_DeInit(SD_SDIO_DMA_STREAM);
+
+  SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
+  SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
+  SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferDST;
+  SDDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
+  SDDMA_InitStructure.DMA_BufferSize = BufferSize;
+  SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+  SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+  SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+  SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+  SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
+  SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
+  SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
+  SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
+  SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
+  DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
+  DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
+  DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);
+
+  /* DMA2 Stream3 or Stream6 enable */
+  DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
+}
+
+
+/**
+  * @}
+  */ 
+
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */    
+
+/**
+  * @}
+  */ 
+    
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/lib/stm324x7i_eval.h b/stm/lib/stm324x7i_eval.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c39a292f445fbb2d63bc97594a553910cc231c3
--- /dev/null
+++ b/stm/lib/stm324x7i_eval.h
@@ -0,0 +1,370 @@
+/**
+  ******************************************************************************
+  * @file    STM324x7i_eval.h
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    11-January-2013
+  * @brief   This file contains definitions for STM324x7I_EVAL's Leds, push-buttons
+  *          and COM ports hardware resources.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+  
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM324x7I_EVAL_H
+#define __STM324x7I_EVAL_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx.h"
+   
+/** @addtogroup Utilities
+  * @{
+  */
+
+/** @addtogroup STM32_EVAL
+  * @{
+  */
+
+/** @addtogroup STM324x7I_EVAL
+  * @{
+  */
+      
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL
+  * @{
+  */ 
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Exported_Types
+  * @{
+  */
+#if 0
+typedef enum 
+{
+  LED1 = 0,
+  LED2 = 1,
+  LED3 = 2,
+  LED4 = 3
+} Led_TypeDef;
+
+typedef enum 
+{  
+  BUTTON_WAKEUP = 0,
+  BUTTON_TAMPER = 1,
+  BUTTON_KEY = 2,
+  BUTTON_RIGHT = 3,
+  BUTTON_LEFT = 4,
+  BUTTON_UP = 5,
+  BUTTON_DOWN = 6,
+  BUTTON_SEL = 7
+} Button_TypeDef;
+
+typedef enum 
+{  
+  BUTTON_MODE_GPIO = 0,
+  BUTTON_MODE_EXTI = 1
+} ButtonMode_TypeDef;
+
+typedef enum 
+{ 
+  JOY_NONE = 0,
+  JOY_SEL = 1,
+  JOY_DOWN = 2,
+  JOY_LEFT = 3,
+  JOY_RIGHT = 4,
+  JOY_UP = 5
+} JOYState_TypeDef
+;
+
+typedef enum 
+{
+  COM1 = 0,
+  COM2 = 1
+} COM_TypeDef;
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Exported_Constants
+  * @{
+  */ 
+
+/** 
+  * @brief  Define for STM324x7I_EVAL board  
+  */ 
+#if !defined (USE_STM324x7I_EVAL)
+ #define USE_STM324x7I_EVAL
+#endif
+
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL_LED
+  * @{
+  */
+#define LEDn                             4
+
+#define LED1_PIN                         GPIO_Pin_6
+#define LED1_GPIO_PORT                   GPIOG
+#define LED1_GPIO_CLK                    RCC_AHB1Periph_GPIOG  
+  
+#define LED2_PIN                         GPIO_Pin_8
+#define LED2_GPIO_PORT                   GPIOG
+#define LED2_GPIO_CLK                    RCC_AHB1Periph_GPIOG  
+  
+#define LED3_PIN                         GPIO_Pin_9
+#define LED3_GPIO_PORT                   GPIOI
+#define LED3_GPIO_CLK                    RCC_AHB1Periph_GPIOI  
+  
+#define LED4_PIN                         GPIO_Pin_7
+#define LED4_GPIO_PORT                   GPIOC
+#define LED4_GPIO_CLK                    RCC_AHB1Periph_GPIOC
+
+/**
+  * @}
+  */ 
+  
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL_BUTTON
+  * @{
+  */  
+#define BUTTONn                          3 /*!< Joystick pins are connected to 
+                                                an IO Expander (accessible through 
+                                                I2C1 interface) */
+
+/**
+ * @brief Wakeup push-button
+ */
+#define WAKEUP_BUTTON_PIN                GPIO_Pin_0
+#define WAKEUP_BUTTON_GPIO_PORT          GPIOA
+#define WAKEUP_BUTTON_GPIO_CLK           RCC_AHB1Periph_GPIOA
+#define WAKEUP_BUTTON_EXTI_LINE          EXTI_Line0
+#define WAKEUP_BUTTON_EXTI_PORT_SOURCE   EXTI_PortSourceGPIOA
+#define WAKEUP_BUTTON_EXTI_PIN_SOURCE    EXTI_PinSource0
+#define WAKEUP_BUTTON_EXTI_IRQn          EXTI0_IRQn 
+
+/**
+ * @brief Tamper push-button
+ */
+#define TAMPER_BUTTON_PIN                GPIO_Pin_13
+#define TAMPER_BUTTON_GPIO_PORT          GPIOC
+#define TAMPER_BUTTON_GPIO_CLK           RCC_AHB1Periph_GPIOC
+#define TAMPER_BUTTON_EXTI_LINE          EXTI_Line13
+#define TAMPER_BUTTON_EXTI_PORT_SOURCE   EXTI_PortSourceGPIOC
+#define TAMPER_BUTTON_EXTI_PIN_SOURCE    EXTI_PinSource13
+#define TAMPER_BUTTON_EXTI_IRQn          EXTI15_10_IRQn 
+
+/**
+ * @brief Key push-button
+ */
+#define KEY_BUTTON_PIN                   GPIO_Pin_15
+#define KEY_BUTTON_GPIO_PORT             GPIOG
+#define KEY_BUTTON_GPIO_CLK              RCC_AHB1Periph_GPIOG
+#define KEY_BUTTON_EXTI_LINE             EXTI_Line15
+#define KEY_BUTTON_EXTI_PORT_SOURCE      EXTI_PortSourceGPIOG
+#define KEY_BUTTON_EXTI_PIN_SOURCE       EXTI_PinSource15
+#define KEY_BUTTON_EXTI_IRQn             EXTI15_10_IRQn
+/**
+  * @}
+  */ 
+
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL_COM
+  * @{
+  */
+#define COMn                             1
+
+/**
+ * @brief Definition for COM port1, connected to USART3
+ */ 
+#define EVAL_COM1                        USART3
+#define EVAL_COM1_CLK                    RCC_APB1Periph_USART3
+#define EVAL_COM1_TX_PIN                 GPIO_Pin_10
+#define EVAL_COM1_TX_GPIO_PORT           GPIOC
+#define EVAL_COM1_TX_GPIO_CLK            RCC_AHB1Periph_GPIOC
+#define EVAL_COM1_TX_SOURCE              GPIO_PinSource10
+#define EVAL_COM1_TX_AF                  GPIO_AF_USART3
+#define EVAL_COM1_RX_PIN                 GPIO_Pin_11
+#define EVAL_COM1_RX_GPIO_PORT           GPIOC
+#define EVAL_COM1_RX_GPIO_CLK            RCC_AHB1Periph_GPIOC
+#define EVAL_COM1_RX_SOURCE              GPIO_PinSource11
+#define EVAL_COM1_RX_AF                  GPIO_AF_USART3
+#define EVAL_COM1_IRQn                   USART3_IRQn
+#endif
+
+/**
+  * @}
+  */ 
+
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL_SD_FLASH
+  * @{
+  */ 
+/**
+  * @brief  SD FLASH SDIO Interface
+  */
+#define SD_DETECT_PIN                    GPIO_Pin_13                 /* PC.13 */
+#define SD_DETECT_GPIO_PORT              GPIOC                       /* GPIOC */
+#define SD_DETECT_GPIO_CLK               RCC_AHB1Periph_GPIOC
+   
+#define SDIO_FIFO_ADDRESS                ((uint32_t)0x40012C80)
+/** 
+  * @brief  SDIO Intialization Frequency (400KHz max)
+  */
+#define SDIO_INIT_CLK_DIV                ((uint8_t)0x76)
+/** 
+  * @brief  SDIO Data Transfer Frequency (25MHz max)
+  */
+#define SDIO_TRANSFER_CLK_DIV            ((uint8_t)0x0) 
+
+#define SD_SDIO_DMA                   DMA2
+#define SD_SDIO_DMA_CLK               RCC_AHB1Periph_DMA2
+ 
+#define SD_SDIO_DMA_STREAM3	          3
+//#define SD_SDIO_DMA_STREAM6           6
+
+#ifdef SD_SDIO_DMA_STREAM3
+ #define SD_SDIO_DMA_STREAM            DMA2_Stream3
+ #define SD_SDIO_DMA_CHANNEL           DMA_Channel_4
+ #define SD_SDIO_DMA_FLAG_FEIF         DMA_FLAG_FEIF3
+ #define SD_SDIO_DMA_FLAG_DMEIF        DMA_FLAG_DMEIF3
+ #define SD_SDIO_DMA_FLAG_TEIF         DMA_FLAG_TEIF3
+ #define SD_SDIO_DMA_FLAG_HTIF         DMA_FLAG_HTIF3
+ #define SD_SDIO_DMA_FLAG_TCIF         DMA_FLAG_TCIF3 
+ #define SD_SDIO_DMA_IRQn              DMA2_Stream3_IRQn
+ #define SD_SDIO_DMA_IRQHANDLER        DMA2_Stream3_IRQHandler 
+#elif defined SD_SDIO_DMA_STREAM6
+ #define SD_SDIO_DMA_STREAM            DMA2_Stream6
+ #define SD_SDIO_DMA_CHANNEL           DMA_Channel_4
+ #define SD_SDIO_DMA_FLAG_FEIF         DMA_FLAG_FEIF6
+ #define SD_SDIO_DMA_FLAG_DMEIF        DMA_FLAG_DMEIF6
+ #define SD_SDIO_DMA_FLAG_TEIF         DMA_FLAG_TEIF6
+ #define SD_SDIO_DMA_FLAG_HTIF         DMA_FLAG_HTIF6
+ #define SD_SDIO_DMA_FLAG_TCIF         DMA_FLAG_TCIF6 
+ #define SD_SDIO_DMA_IRQn              DMA2_Stream6_IRQn
+ #define SD_SDIO_DMA_IRQHANDLER        DMA2_Stream6_IRQHandler
+#endif /* SD_SDIO_DMA_STREAM3 */
+
+/**
+  * @}
+  */ 
+  
+/** @addtogroup STM324x7I_EVAL_LOW_LEVEL_I2C_EE
+  * @{
+  */
+/**
+  * @brief  I2C EEPROM Interface pins
+  */  
+#if 0
+#define sEE_I2C                          I2C1
+#define sEE_I2C_CLK                      RCC_APB1Periph_I2C1
+#define sEE_I2C_SCL_PIN                  GPIO_Pin_6                  /* PB.06 */
+#define sEE_I2C_SCL_GPIO_PORT            GPIOB                       /* GPIOB */
+#define sEE_I2C_SCL_GPIO_CLK             RCC_AHB1Periph_GPIOB
+#define sEE_I2C_SCL_SOURCE               GPIO_PinSource6
+#define sEE_I2C_SCL_AF                   GPIO_AF_I2C1
+#define sEE_I2C_SDA_PIN                  GPIO_Pin_9                  /* PB.09 */
+#define sEE_I2C_SDA_GPIO_PORT            GPIOB                       /* GPIOB */
+#define sEE_I2C_SDA_GPIO_CLK             RCC_AHB1Periph_GPIOB
+#define sEE_I2C_SDA_SOURCE               GPIO_PinSource9
+#define sEE_I2C_SDA_AF                   GPIO_AF_I2C1
+#define sEE_M24C64_32
+
+#define sEE_I2C_DMA                      DMA1   
+#define sEE_I2C_DMA_CHANNEL              DMA_Channel_1
+#define sEE_I2C_DMA_STREAM_TX            DMA1_Stream6
+#define sEE_I2C_DMA_STREAM_RX            DMA1_Stream0   
+#define sEE_I2C_DMA_CLK                  RCC_AHB1Periph_DMA1
+#define sEE_I2C_DR_Address               ((uint32_t)0x40005410)
+#define sEE_USE_DMA
+   
+#define sEE_I2C_DMA_TX_IRQn              DMA1_Stream6_IRQn
+#define sEE_I2C_DMA_RX_IRQn              DMA1_Stream0_IRQn
+#define sEE_I2C_DMA_TX_IRQHandler        DMA1_Stream6_IRQHandler
+#define sEE_I2C_DMA_RX_IRQHandler        DMA1_Stream0_IRQHandler   
+#define sEE_I2C_DMA_PREPRIO              0
+#define sEE_I2C_DMA_SUBPRIO              0   
+   
+#define sEE_TX_DMA_FLAG_FEIF             DMA_FLAG_FEIF6
+#define sEE_TX_DMA_FLAG_DMEIF            DMA_FLAG_DMEIF6
+#define sEE_TX_DMA_FLAG_TEIF             DMA_FLAG_TEIF6
+#define sEE_TX_DMA_FLAG_HTIF             DMA_FLAG_HTIF6
+#define sEE_TX_DMA_FLAG_TCIF             DMA_FLAG_TCIF6
+#define sEE_RX_DMA_FLAG_FEIF             DMA_FLAG_FEIF0
+#define sEE_RX_DMA_FLAG_DMEIF            DMA_FLAG_DMEIF0
+#define sEE_RX_DMA_FLAG_TEIF             DMA_FLAG_TEIF0
+#define sEE_RX_DMA_FLAG_HTIF             DMA_FLAG_HTIF0
+#define sEE_RX_DMA_FLAG_TCIF             DMA_FLAG_TCIF0
+   
+#define sEE_DIRECTION_TX                 0
+#define sEE_DIRECTION_RX                 1  
+
+/* Time constant for the delay caclulation allowing to have a millisecond 
+   incrementing counter. This value should be equal to (System Clock / 1000).
+   ie. if system clock = 168MHz then sEE_TIME_CONST should be 168. */
+#define sEE_TIME_CONST                   168 
+#endif
+/**
+  * @}
+  */  
+/**
+  * @}
+  */ 
+  
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Exported_Macros
+  * @{
+  */  
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_LOW_LEVEL_Exported_Functions
+  * @{
+  */
+void SD_LowLevel_DeInit(void);
+void SD_LowLevel_Init(void); 
+void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize);
+void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize);
+#if 0
+void sEE_LowLevel_DeInit(void);
+void sEE_LowLevel_Init(void); 
+void sEE_LowLevel_DMAConfig(uint32_t pBuffer, uint32_t BufferSize, uint32_t Direction);
+#endif
+/**
+  * @}
+  */
+  
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM324x7I_EVAL_H */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */  
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/lib/stm324x7i_eval_sdio_sd.c b/stm/lib/stm324x7i_eval_sdio_sd.c
new file mode 100644
index 0000000000000000000000000000000000000000..f63b7bb5d679fab5ffd9192e559a5d9e2f74ba27
--- /dev/null
+++ b/stm/lib/stm324x7i_eval_sdio_sd.c
@@ -0,0 +1,2949 @@
+/**
+  ******************************************************************************
+  * @file    stm324x7i_eval_sdio_sd.c
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    11-January-2013
+  * @brief   This file provides a set of functions needed to manage the SDIO SD 
+  *          Card memory mounted on STM324x7I-EVAL evaluation board.
+  *
+  *  @verbatim
+  *
+  *          ===================================================================
+  *                                   How to use this driver
+  *          ===================================================================
+  *          It implements a high level communication layer for read and write 
+  *          from/to this memory. The needed STM32 hardware resources (SDIO and 
+  *          GPIO) are defined in stm324x7i_eval.h file, and the initialization is 
+  *          performed in SD_LowLevel_Init() function declared in stm324x7i_eval.c 
+  *          file.
+  *          You can easily tailor this driver to any other development board, 
+  *          by just adapting the defines for hardware resources and 
+  *          SD_LowLevel_Init() function.
+  *
+  *          A - SD Card Initialization and configuration
+  *          ============================================    
+  *            - To initialize the SD Card, use the SD_Init() function.  It 
+  *              Initializes the SD Card and put it into StandBy State (Ready 
+  *              for data transfer). This function provide the following operations:
+  *
+  *              1 - Apply the SD Card initialization process at 400KHz and check
+  *                  the SD Card type (Standard Capacity or High Capacity). You 
+  *                  can change or adapt this frequency by adjusting the 
+  *                  "SDIO_INIT_CLK_DIV" define inside the stm324x7i_eval.h file. 
+  *                  The SD Card frequency (SDIO_CK) is computed as follows:
+  *
+  *                     +---------------------------------------------+
+  *                     | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |
+  *                     +---------------------------------------------+
+  *
+  *                  In initialization mode and according to the SD Card standard, 
+  *                  make sure that the SDIO_CK frequency don't exceed 400KHz.
+  *
+  *              2 - Get the SD CID and CSD data. All these information are
+  *                  managed by the SDCardInfo structure. This structure provide
+  *                  also ready computed SD Card capacity and Block size.   
+  *
+  *              3 - Configure the SD Card Data transfer frequency. By Default,
+  *                  the card transfer frequency is set to 24MHz. You can change
+  *                  or adapt this frequency by adjusting the "SDIO_TRANSFER_CLK_DIV" 
+  *                  define inside the stm324x7i_eval.h file.
+  *                  The SD Card frequency (SDIO_CK) is computed as follows:
+  *
+  *                     +---------------------------------------------+
+  *                     | SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) |
+  *                     +---------------------------------------------+
+  *
+  *                  In transfer mode and according to the SD Card standard, 
+  *                  make sure that the SDIO_CK frequency don't exceed 25MHz
+  *                  and 50MHz in High-speed mode switch.
+  *                  To be able to use a frequency higher than 24MHz, you should
+  *                  use the SDIO peripheral in bypass mode. Refer to the 
+  *                  corresponding reference manual for more details.
+  *
+  *              4 -  Select the corresponding SD Card according to the address
+  *                   read with the step 2.
+  *
+  *              5 -  Configure the SD Card in wide bus mode: 4-bits data.
+  *
+  *          B - SD Card Read operation
+  *          ========================== 
+  *           - You can read SD card by using two function: SD_ReadBlock() and
+  *             SD_ReadMultiBlocks() functions. These functions support only
+  *             512-byte block length.
+  *           - The SD_ReadBlock() function read only one block (512-byte). This
+  *             function can transfer the data using DMA controller or using 
+  *             polling mode. To select between DMA or polling mode refer to 
+  *             "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm324x7i_eval_sdio_sd.h
+  *             file and uncomment the corresponding line. By default the SD DMA
+  *             mode is selected          
+  *           - The SD_ReadMultiBlocks() function read only mutli blocks (multiple 
+  *             of 512-byte). 
+  *           - Any read operation should be followed by two functions to check
+  *             if the DMA Controller and SD Card status.
+  *              - SD_ReadWaitOperation(): this function insure that the DMA
+  *                controller has finished all data transfer.
+  *              - SD_GetStatus(): to check that the SD Card has finished the 
+  *                data transfer and it is ready for data.
+  *
+  *           - The DMA transfer is finished by the SDIO Data End interrupt. 
+  *             User has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler()
+  *             and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler().
+  *             Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or 
+  *             DMA2_Stream6_IRQn interrupts using the NVIC controller.
+  *
+  *          C - SD Card Write operation
+  *          =========================== 
+  *           - You can write SD card by using two function: SD_WriteBlock() and
+  *             SD_WriteMultiBlocks() functions. These functions support only
+  *             512-byte block length.   
+  *           - The SD_WriteBlock() function write only one block (512-byte). This
+  *             function can transfer the data using DMA controller or using 
+  *             polling mode. To select between DMA or polling mode refer to 
+  *             "SD_DMA_MODE" or "SD_POLLING_MODE" inside the stm324x7i_eval_sdio_sd.h
+  *             file and uncomment the corresponding line. By default the SD DMA
+  *             mode is selected          
+  *           - The SD_WriteMultiBlocks() function write only mutli blocks (multiple 
+  *             of 512-byte). 
+  *           - Any write operation should be followed by two functions to check
+  *             if the DMA Controller and SD Card status.
+  *              - SD_ReadWaitOperation(): this function insure that the DMA
+  *                controller has finished all data transfer.
+  *              - SD_GetStatus(): to check that the SD Card has finished the 
+  *                data transfer and it is ready for data.
+  *
+  *           - The DMA transfer is finished by the SDIO Data End interrupt. 
+  *             User has to call the SD_ProcessIRQ() function inside the SDIO_IRQHandler()
+  *             and SD_ProcessDMAIRQ() function inside the DMA2_Streamx_IRQHandler().
+  *             Don't forget to enable the SDIO_IRQn and DMA2_Stream3_IRQn or 
+  *             DMA2_Stream6_IRQn interrupts using the NVIC controller.
+  *
+  *
+  *          D - SD card status
+  *          ================== 
+  *           - At any time, you can check the SD Card status and get the SD card
+  *             state by using the SD_GetStatus() function. This function checks
+  *             first if the SD card is still connected and then get the internal
+  *             SD Card transfer state.     
+  *           - You can also get the SD card SD Status register by using the 
+  *             SD_SendSDStatus() function.
+  *
+  *          E - Programming Model (Selecting DMA for SDIO data Transfer)
+  *          ============================================================ 
+  *             Status = SD_Init(); // Initialization Step as described in section A
+  *
+  *             // SDIO Interrupt ENABLE
+  *             NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
+  *             NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  *             NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  *             NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+  *             NVIC_Init(&NVIC_InitStructure);
+  *             // DMA2 STREAMx Interrupt ENABLE
+  *             NVIC_InitStructure.NVIC_IRQChannel = SD_SDIO_DMA_IRQn;
+  *             NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+  *             NVIC_Init(&NVIC_InitStructure);
+  *               
+  *             // Write operation as described in Section C
+  *             Status = SD_WriteBlock(buffer, address, 512);
+  *             Status = SD_WaitWriteOperation();
+  *             while(SD_GetStatus() != SD_TRANSFER_OK);
+  *
+  *             Status = SD_WriteMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);
+  *             Status = SD_WaitWriteOperation();
+  *             while(SD_GetStatus() != SD_TRANSFER_OK);
+  *
+  *             // Read operation as described in Section B
+  *             Status = SD_ReadBlock(buffer, address, 512);
+  *             Status = SD_WaitReadOperation();
+  *             while(SD_GetStatus() != SD_TRANSFER_OK);
+  *
+  *             Status = SD_ReadMultiBlocks(buffer, address, 512, NUMBEROFBLOCKS);
+  *             Status = SD_WaitReadOperation();
+  *             while(SD_GetStatus() != SD_TRANSFER_OK);
+  *
+  *             - Add the SDIO and DMA2 StreamX (3 or 6) IRQ Handlers:   
+  *                 void SDIO_IRQHandler(void)
+  *                 {
+  *                   SD_ProcessIRQ();  
+  *                 }   
+  *                 void SD_SDIO_DMA_IRQHANDLER(void)
+  *                 {
+  *                   SD_ProcessDMAIRQ();  
+  *                 }     
+  *
+  *          F - Programming Model (Selecting Polling for SDIO data Transfer)
+  *          ================================================================
+  *            //Only SD Card Single Block operation are managed.   
+  *            Status = SD_Init(); // Initialization Step as described in section
+  *               
+  *            // Write operation as described in Section C
+  *            Status = SD_WriteBlock(buffer, address, 512);
+  *
+  *            // Read operation as described in Section B
+  *            Status = SD_ReadBlock(buffer, address, 512);
+  *                 
+  *          STM32 SDIO Pin assignment
+  *          =========================
+  *          +-----------------------------------------------------------+
+  *          |                     Pin assignment                        |
+  *          +-----------------------------+---------------+-------------+
+  *          |  STM32 SDIO Pins            |     SD        |    Pin      |
+  *          +-----------------------------+---------------+-------------+
+  *          |      SDIO D2                |   D2          |    1        |
+  *          |      SDIO D3                |   D3          |    2        |
+  *          |      SDIO CMD               |   CMD         |    3        |
+  *          |                             |   VCC         |    4 (3.3 V)|
+  *          |      SDIO CLK               |   CLK         |    5        |
+  *          |                             |   GND         |    6 (0 V)  |
+  *          |      SDIO D0                |   D0          |    7        |
+  *          |      SDIO D1                |   D1          |    8        |
+  *          +-----------------------------+---------------+-------------+
+  *
+  *  @endverbatim
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_dma.h"
+#include "stm32f4xx_gpio.h"
+#include "stm32f4xx_sdio.h"
+#include "stm324x7i_eval_sdio_sd.h"
+//#include "std.h"
+
+
+/** @addtogroup Utilities
+  * @{
+  */ 
+
+/** @addtogroup STM32_EVAL
+  * @{
+  */ 
+
+/** @addtogroup STM324x7I_EVAL
+  * @{
+  */
+  
+/** @addtogroup STM324x7I_EVAL_SDIO_SD
+  * @brief      This file provides all the SD Card driver firmware functions.
+  * @{
+  */ 
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Types
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup stm324x7i_EVAL_SDIO_SD_Private_Defines
+  * @{
+  */ 
+
+/** 
+  * @brief  SDIO Static flags, TimeOut, FIFO Address  
+  */
+#define NULL 0
+#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
+#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00080000) // dpgeorge: was 0x10000
+
+/** 
+  * @brief  Mask for errors Card Status R1 (OCR Register) 
+  */
+#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
+#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
+#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
+#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
+#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
+#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
+#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
+#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
+#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
+#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
+#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
+#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
+#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
+#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
+#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
+#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
+#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
+#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
+#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
+#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)
+
+/** 
+  * @brief  Masks for R6 Response 
+  */
+#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
+#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
+#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)
+
+#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
+#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
+#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
+#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)
+
+#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
+#define SD_ALLZERO                      ((uint32_t)0x00000000)
+
+#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
+#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
+#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)
+
+#define SD_DATATIMEOUT                  ((uint32_t)0xFFFFFFFF)
+#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
+#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
+#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
+#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
+#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)
+
+#define SD_HALFFIFO                     ((uint32_t)0x00000008)
+#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)
+
+/** 
+  * @brief  Command Class Supported 
+  */
+#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
+#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
+#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)
+
+/** 
+  * @brief  Following commands are SD Card Specific commands.
+  *         SDIO_APP_CMD should be sent before sending these commands. 
+  */
+#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)
+
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Macros
+  * @{
+  */
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Variables
+  * @{
+  */
+
+static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
+static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
+static uint8_t SDSTATUS_Tab[16];
+__IO uint32_t StopCondition = 0;
+__IO SD_Error TransferError = SD_OK;
+__IO uint32_t TransferEnd = 0, DMAEndOfTransfer = 0;
+SD_CardInfo SDCardInfo;
+
+SDIO_InitTypeDef SDIO_InitStructure;
+SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
+SDIO_DataInitTypeDef SDIO_DataInitStructure;
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Function_Prototypes
+  * @{
+  */
+static SD_Error CmdError(void);
+static SD_Error CmdResp1Error(uint8_t cmd);
+static SD_Error CmdResp7Error(void);
+static SD_Error CmdResp3Error(void);
+static SD_Error CmdResp2Error(void);
+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
+static SD_Error SDEnWideBus(FunctionalState NewState);
+static SD_Error IsCardProgramming(uint8_t *pstatus);
+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
+uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
+  
+/**
+  * @}
+  */ 
+
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Private_Functions
+  * @{
+  */  
+
+/**
+  * @brief  DeInitializes the SDIO interface.
+  * @param  None
+  * @retval None
+  */
+void SD_DeInit(void)
+{ 
+  SD_LowLevel_DeInit();
+}
+
+/**
+  * @brief  Initializes the SD Card and put it into StandBy State (Ready for data 
+  *         transfer).
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_Init(void)
+{
+  __IO SD_Error errorstatus = SD_OK;
+  
+  /* SDIO Peripheral Low Level Init */
+   SD_LowLevel_Init();
+  
+  SDIO_DeInit();
+
+  errorstatus = SD_PowerON();
+
+  if (errorstatus != SD_OK)
+  {
+      printf("here1\n");
+    /*!< CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  errorstatus = SD_InitializeCards();
+
+  if (errorstatus != SD_OK)
+  {
+      printf("here2\n");
+    /*!< CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  /*!< Configure the SDIO peripheral */
+  /*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */
+  /*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+  SDIO_Init(&SDIO_InitStructure);
+
+  /*----------------- Read CSD/CID MSD registers ------------------*/
+  errorstatus = SD_GetCardInfo(&SDCardInfo);
+
+  if (errorstatus == SD_OK)
+  {
+    /*----------------- Select Card --------------------------------*/
+    errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));
+  }
+
+  if (errorstatus == SD_OK)
+  {
+    errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);
+  }  
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Gets the cuurent sd card data transfer status.
+  * @param  None
+  * @retval SDTransferState: Data Transfer state.
+  *   This value can be: 
+  *        - SD_TRANSFER_OK: No data transfer is acting
+  *        - SD_TRANSFER_BUSY: Data transfer is acting
+  */
+SDTransferState SD_GetStatus(void)
+{
+  SDCardState cardstate =  SD_CARD_TRANSFER;
+
+  cardstate = SD_GetState();
+  
+  if (cardstate == SD_CARD_TRANSFER)
+  {
+    return(SD_TRANSFER_OK);
+  }
+  else if(cardstate == SD_CARD_ERROR)
+  {
+    return (SD_TRANSFER_ERROR);
+  }
+  else
+  {
+    return(SD_TRANSFER_BUSY);
+  }
+}
+
+/**
+  * @brief  Returns the current card's state.
+  * @param  None
+  * @retval SDCardState: SD Card Error or SD Card Current State.
+  */
+SDCardState SD_GetState(void)
+{
+  uint32_t resp1 = 0;
+  
+  if(SD_Detect()== SD_PRESENT)
+  {
+    if (SD_SendStatus(&resp1) != SD_OK)
+    {
+      return SD_CARD_ERROR;
+    }
+    else
+    {
+      return (SDCardState)((resp1 >> 9) & 0x0F);
+    }
+  }
+  else
+  {
+    return SD_CARD_ERROR;
+  }
+}
+
+/**
+ * @brief  Detect if SD card is correctly plugged in the memory slot.
+ * @param  None
+ * @retval Return if SD is detected or not
+ */
+uint8_t SD_Detect(void)
+{
+  __IO uint8_t status = SD_PRESENT;
+
+  /*!< Check GPIO to detect SD */
+  if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_SET)
+  {
+    status = SD_NOT_PRESENT;
+  }
+  return status;
+}
+
+/**
+  * @brief  Enquires cards about their operating voltage and configures 
+  *   clock controls.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_PowerON(void)
+{
+  __IO SD_Error errorstatus = SD_OK;
+  uint32_t response = 0, count = 0, validvoltage = 0;
+  uint32_t SDType = SD_STD_CAPACITY;
+
+  /*!< Power ON Sequence -----------------------------------------------------*/
+  /*!< Configure the SDIO peripheral */
+  /*!< SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) */
+  /*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
+  /*!< SDIO_CK for initialization should not exceed 400 KHz */  
+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;
+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+  SDIO_Init(&SDIO_InitStructure);
+
+  /*!< Set Power State to ON */
+  SDIO_SetPowerState(SDIO_PowerState_ON);
+
+  /*!< Enable SDIO Clock */
+  SDIO_ClockCmd(ENABLE);
+
+  /*!< CMD0: GO_IDLE_STATE ---------------------------------------------------*/
+  /*!< No CMD response required */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdError();
+      printf("here pwr 1 %d\n", errorstatus);
+
+  if (errorstatus != SD_OK)
+  {
+    /*!< CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  /*!< CMD8: SEND_IF_COND ----------------------------------------------------*/
+  /*!< Send CMD8 to verify SD card interface operating condition */
+  /*!< Argument: - [31:12]: Reserved (shall be set to '0')
+               - [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
+               - [7:0]: Check Pattern (recommended 0xAA) */
+  /*!< CMD Response: R7 */
+  SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp7Error();
+      printf("here pwr 2 %d\n", errorstatus);
+
+  if (errorstatus == SD_OK)
+  {
+    CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /*!< SD Card 2.0 */
+    SDType = SD_HIGH_CAPACITY;
+  }
+  else
+  {
+    /*!< CMD55 */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+    errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+  }
+  /*!< CMD55 */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+      printf("here pwr 3 %d\n", errorstatus);
+
+  /*!< If errorstatus is Command TimeOut, it is a MMC card */
+  /*!< If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
+     or SD card 1.x */
+  if (errorstatus == SD_OK)
+  {
+    /*!< SD CARD */
+    /*!< Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
+    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
+    {
+
+      /*!< SEND CMD55 APP_CMD with RCA as 0 */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp3Error();
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      response = SDIO_GetResponse(SDIO_RESP1);
+      validvoltage = (((response >> 31) == 1) ? 1 : 0);
+      count++;
+    }
+    if (count >= SD_MAX_VOLT_TRIAL)
+    {
+      errorstatus = SD_INVALID_VOLTRANGE;
+      return(errorstatus);
+    }
+
+    if (response &= SD_HIGH_CAPACITY)
+    {
+      CardType = SDIO_HIGH_CAPACITY_SD_CARD;
+    }
+
+  }/*!< else MMC Card */
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Turns the SDIO output signals off.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_PowerOFF(void)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /*!< Set Power State to OFF */
+  SDIO_SetPowerState(SDIO_PowerState_OFF);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Intialises all cards or single card as the case may be Card(s) come 
+  *         into standby state.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_InitializeCards(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint16_t rca = 0x01;
+
+  if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
+  {
+    errorstatus = SD_REQUEST_NOT_APPLICABLE;
+    return(errorstatus);
+  }
+
+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
+  {
+    /*!< Send CMD2 ALL_SEND_CID */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp2Error();
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+
+    CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
+    CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
+    CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
+    CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
+  }
+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
+      ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    /*!< Send CMD3 SET_REL_ADDR with argument 0 */
+    /*!< SD Card publishes its RCA. */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+  }
+
+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
+  {
+    RCA = rca;
+
+    /*!< Send CMD9 SEND_CSD with argument as card's RCA */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp2Error();
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+
+    CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
+    CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
+    CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
+    CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
+  }
+
+  errorstatus = SD_OK; /*!< All cards get intialized */
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns information about specific card.
+  * @param  cardinfo: pointer to a SD_CardInfo structure that contains all SD card 
+  *         information.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
+{
+  SD_Error errorstatus = SD_OK;
+  uint8_t tmp = 0;
+
+  cardinfo->CardType = (uint8_t)CardType;
+  cardinfo->RCA = (uint16_t)RCA;
+
+  /*!< Byte 0 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
+  cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
+  cardinfo->SD_csd.Reserved1 = tmp & 0x03;
+
+  /*!< Byte 1 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.TAAC = tmp;
+
+  /*!< Byte 2 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.NSAC = tmp;
+
+  /*!< Byte 3 */
+  tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
+  cardinfo->SD_csd.MaxBusClkFrec = tmp;
+
+  /*!< Byte 4 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.CardComdClasses = tmp << 4;
+
+  /*!< Byte 5 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
+  cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
+
+  /*!< Byte 6 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
+  cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */
+
+  if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
+  {
+    cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
+
+    /*!< Byte 7 */
+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
+    cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
+
+    /*!< Byte 8 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
+    cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
+
+    cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
+    cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
+
+    /*!< Byte 9 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
+    cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
+    cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
+    cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
+    /*!< Byte 10 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
+    cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
+    
+    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
+    cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
+    cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
+    cardinfo->CardCapacity *= cardinfo->CardBlockSize;
+  }
+  else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    /*!< Byte 7 */
+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
+    cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
+
+    /*!< Byte 8 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
+
+    cardinfo->SD_csd.DeviceSize |= (tmp << 8);
+
+    /*!< Byte 9 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
+
+    cardinfo->SD_csd.DeviceSize |= (tmp);
+
+    /*!< Byte 10 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
+    
+    cardinfo->CardCapacity = ((uint64_t)cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
+    cardinfo->CardBlockSize = 512;    
+  }
+
+
+  cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
+
+  /*!< Byte 11 */
+  tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
+  cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
+
+  /*!< Byte 12 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
+  cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
+  cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
+
+  /*!< Byte 13 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
+  cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.Reserved3 = 0;
+  cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
+
+  /*!< Byte 14 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
+  cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
+  cardinfo->SD_csd.ECC = (tmp & 0x03);
+
+  /*!< Byte 15 */
+  tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
+  cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
+  cardinfo->SD_csd.Reserved4 = 1;
+
+
+  /*!< Byte 0 */
+  tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ManufacturerID = tmp;
+
+  /*!< Byte 1 */
+  tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.OEM_AppliID = tmp << 8;
+
+  /*!< Byte 2 */
+  tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
+  cardinfo->SD_cid.OEM_AppliID |= tmp;
+
+  /*!< Byte 3 */
+  tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
+  cardinfo->SD_cid.ProdName1 = tmp << 24;
+
+  /*!< Byte 4 */
+  tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdName1 |= tmp << 16;
+
+  /*!< Byte 5 */
+  tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.ProdName1 |= tmp << 8;
+
+  /*!< Byte 6 */
+  tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ProdName1 |= tmp;
+
+  /*!< Byte 7 */
+  tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
+  cardinfo->SD_cid.ProdName2 = tmp;
+
+  /*!< Byte 8 */
+  tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdRev = tmp;
+
+  /*!< Byte 9 */
+  tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.ProdSN = tmp << 24;
+
+  /*!< Byte 10 */
+  tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ProdSN |= tmp << 16;
+
+  /*!< Byte 11 */
+  tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
+  cardinfo->SD_cid.ProdSN |= tmp << 8;
+
+  /*!< Byte 12 */
+  tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdSN |= tmp;
+
+  /*!< Byte 13 */
+  tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
+  cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
+
+  /*!< Byte 14 */
+  tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ManufactDate |= tmp;
+
+  /*!< Byte 15 */
+  tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
+  cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
+  cardinfo->SD_cid.Reserved2 = 1;
+  
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enables wide bus opeartion for the requeseted card if supported by 
+  *         card.
+  * @param  WideMode: Specifies the SD card wide bus mode. 
+  *   This parameter can be one of the following values:
+  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
+  *     @arg SDIO_BusWide_4b: 4-bit data transfer
+  *     @arg SDIO_BusWide_1b: 1-bit data transfer
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus)
+{
+  SD_Error errorstatus = SD_OK;
+  uint8_t tmp = 0;
+
+  errorstatus = SD_SendSDStatus((uint32_t *)SDSTATUS_Tab);
+
+  if (errorstatus  != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /*!< Byte 0 */
+  tmp = (uint8_t)((SDSTATUS_Tab[0] & 0xC0) >> 6);
+  cardstatus->DAT_BUS_WIDTH = tmp;
+
+  /*!< Byte 0 */
+  tmp = (uint8_t)((SDSTATUS_Tab[0] & 0x20) >> 5);
+  cardstatus->SECURED_MODE = tmp;
+
+  /*!< Byte 2 */
+  tmp = (uint8_t)((SDSTATUS_Tab[2] & 0xFF));
+  cardstatus->SD_CARD_TYPE = tmp << 8;
+
+  /*!< Byte 3 */
+  tmp = (uint8_t)((SDSTATUS_Tab[3] & 0xFF));
+  cardstatus->SD_CARD_TYPE |= tmp;
+
+  /*!< Byte 4 */
+  tmp = (uint8_t)(SDSTATUS_Tab[4] & 0xFF);
+  cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;
+
+  /*!< Byte 5 */
+  tmp = (uint8_t)(SDSTATUS_Tab[5] & 0xFF);
+  cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;
+
+  /*!< Byte 6 */
+  tmp = (uint8_t)(SDSTATUS_Tab[6] & 0xFF);
+  cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;
+
+  /*!< Byte 7 */
+  tmp = (uint8_t)(SDSTATUS_Tab[7] & 0xFF);
+  cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;
+
+  /*!< Byte 8 */
+  tmp = (uint8_t)((SDSTATUS_Tab[8] & 0xFF));
+  cardstatus->SPEED_CLASS = tmp;
+
+  /*!< Byte 9 */
+  tmp = (uint8_t)((SDSTATUS_Tab[9] & 0xFF));
+  cardstatus->PERFORMANCE_MOVE = tmp;
+
+  /*!< Byte 10 */
+  tmp = (uint8_t)((SDSTATUS_Tab[10] & 0xF0) >> 4);
+  cardstatus->AU_SIZE = tmp;
+
+  /*!< Byte 11 */
+  tmp = (uint8_t)(SDSTATUS_Tab[11] & 0xFF);
+  cardstatus->ERASE_SIZE = tmp << 8;
+
+  /*!< Byte 12 */
+  tmp = (uint8_t)(SDSTATUS_Tab[12] & 0xFF);
+  cardstatus->ERASE_SIZE |= tmp;
+
+  /*!< Byte 13 */
+  tmp = (uint8_t)((SDSTATUS_Tab[13] & 0xFC) >> 2);
+  cardstatus->ERASE_TIMEOUT = tmp;
+
+  /*!< Byte 13 */
+  tmp = (uint8_t)((SDSTATUS_Tab[13] & 0x3));
+  cardstatus->ERASE_OFFSET = tmp;
+ 
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enables wide bus opeartion for the requeseted card if supported by 
+  *         card.
+  * @param  WideMode: Specifies the SD card wide bus mode. 
+  *   This parameter can be one of the following values:
+  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
+  *     @arg SDIO_BusWide_4b: 4-bit data transfer
+  *     @arg SDIO_BusWide_1b: 1-bit data transfer
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /*!< MMC Card doesn't support this feature */
+  if (SDIO_MULTIMEDIA_CARD == CardType)
+  {
+    errorstatus = SD_UNSUPPORTED_FEATURE;
+    return(errorstatus);
+  }
+  else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    if (SDIO_BusWide_8b == WideMode)
+    {
+      errorstatus = SD_UNSUPPORTED_FEATURE;
+      return(errorstatus);
+    }
+    else if (SDIO_BusWide_4b == WideMode)
+    {
+      errorstatus = SDEnWideBus(ENABLE);
+
+      if (SD_OK == errorstatus)
+      {
+        /*!< Configure the SDIO peripheral */
+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+        SDIO_Init(&SDIO_InitStructure);
+      }
+    }
+    else
+    {
+      errorstatus = SDEnWideBus(DISABLE);
+
+      if (SD_OK == errorstatus)
+      {
+        /*!< Configure the SDIO peripheral */
+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+        SDIO_Init(&SDIO_InitStructure);
+      }
+    }
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Selects od Deselects the corresponding card.
+  * @param  addr: Address of the Card to be selected.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SelectDeselect(uint64_t addr)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /*!< Send CMD7 SDIO_SEL_DESEL_CARD */
+  SDIO_CmdInitStructure.SDIO_Argument =  (uint32_t)addr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to read one block from a specified address in a card. The Data
+  *         transfer can be managed by DMA mode or Polling mode. 
+  * @note   This operation should be followed by two functions to check if the 
+  *         DMA Controller and SD Card status.
+  *          - SD_ReadWaitOperation(): this function insure that the DMA
+  *            controller has finished all data transfer.
+  *          - SD_GetStatus(): to check that the SD Card has finished the 
+  *            data transfer and it is ready for data.            
+  * @param  readbuff: pointer to the buffer that will contain the received data
+  * @param  ReadAddr: Address from where data are to be read.  
+  * @param  BlockSize: the SD card Data block size. The Block size should be 512.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ReadBlock(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize)
+{
+  SD_Error errorstatus = SD_OK;
+#if defined (SD_POLLING_MODE) 
+  uint32_t count = 0, *tempbuff = (uint32_t *)readbuff;
+#endif
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  StopCondition = 0;
+
+  SDIO->DCTRL = 0x0;
+
+#if defined (SD_DMA_MODE)
+  SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+  SDIO_DMACmd(ENABLE);
+  SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, BlockSize);
+#endif
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    ReadAddr /= 512;
+  }
+
+  /* Set Block Size for Card */ 
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (SD_OK != errorstatus)
+  {
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /*!< Send CMD17 READ_SINGLE_BLOCK */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+#if defined (SD_POLLING_MODE)  
+  /*!< In case of single block transfer, no need of stop transfer at all.*/
+  /*!< Polling mode */
+  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+    {
+      for (count = 0; count < 8; count++)
+      {
+        *(tempbuff + count) = SDIO_ReadData();
+      }
+      tempbuff += 8;
+    }
+  }
+
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+    errorstatus = SD_RX_OVERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+  count = SD_DATATIMEOUT;
+  while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
+  {
+    *tempbuff = SDIO_ReadData();
+    tempbuff++;
+    count--;
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+#endif
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to read blocks from a specified address  in a card.  The Data
+  *         transfer can be managed by DMA mode or Polling mode. 
+  * @note   This operation should be followed by two functions to check if the 
+  *         DMA Controller and SD Card status.
+  *          - SD_ReadWaitOperation(): this function insure that the DMA
+  *            controller has finished all data transfer.
+  *          - SD_GetStatus(): to check that the SD Card has finished the 
+  *            data transfer and it is ready for data.   
+  * @param  readbuff: pointer to the buffer that will contain the received data.
+  * @param  ReadAddr: Address from where data are to be read.
+  * @param  BlockSize: the SD card Data block size. The Block size should be 512.
+  * @param  NumberOfBlocks: number of blocks to be read.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
+{
+  SD_Error errorstatus = SD_OK;
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  StopCondition = 1;
+	
+  SDIO->DCTRL = 0x0;
+
+  SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+  SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, (NumberOfBlocks * BlockSize));
+  SDIO_DMACmd(ENABLE);
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    ReadAddr /= 512;
+  }
+
+  /*!< Set Block Size for Card */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (SD_OK != errorstatus)
+  {
+    return(errorstatus);
+  }
+    
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /*!< Send CMD18 READ_MULT_BLOCK with argument data address */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  This function waits until the SDIO DMA data transfer is finished. 
+  *         This function should be called after SDIO_ReadMultiBlocks() function
+  *         to insure that all data sent by the card are already transferred by 
+  *         the DMA controller.
+  * @param  None.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WaitReadOperation(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t timeout;
+
+  timeout = SD_DATATIMEOUT;
+  
+  while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
+  {
+    timeout--;
+  }
+  
+  DMAEndOfTransfer = 0x00;
+
+  timeout = SD_DATATIMEOUT;
+  
+  while(((SDIO->STA & SDIO_FLAG_RXACT)) && (timeout > 0))
+  {
+    timeout--;  
+  }
+
+  if (StopCondition == 1)
+  {
+    errorstatus = SD_StopTransfer();
+    StopCondition = 0;
+  }
+  
+  if ((timeout == 0) && (errorstatus == SD_OK))
+  {
+    errorstatus = SD_DATA_TIMEOUT;
+  }
+  
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  if (TransferError != SD_OK)
+  {
+    return(TransferError);
+  }
+  else
+  {
+    return(errorstatus);  
+  }
+}
+
+/**
+  * @brief  Allows to write one block starting from a specified address in a card.
+  *         The Data transfer can be managed by DMA mode or Polling mode.
+  * @note   This operation should be followed by two functions to check if the 
+  *         DMA Controller and SD Card status.
+  *          - SD_ReadWaitOperation(): this function insure that the DMA
+  *            controller has finished all data transfer.
+  *          - SD_GetStatus(): to check that the SD Card has finished the 
+  *            data transfer and it is ready for data.      
+  * @param  writebuff: pointer to the buffer that contain the data to be transferred.
+  * @param  WriteAddr: Address from where data are to be read.   
+  * @param  BlockSize: the SD card Data block size. The Block size should be 512.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WriteBlock(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize)
+{
+  SD_Error errorstatus = SD_OK;
+
+#if defined (SD_POLLING_MODE)
+  uint32_t bytestransferred = 0, count = 0, restwords = 0;
+  uint32_t *tempbuff = (uint32_t *)writebuff;
+#endif
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  StopCondition = 0;
+
+  SDIO->DCTRL = 0x0;
+
+#if defined (SD_DMA_MODE)
+  SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+  SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize);
+  SDIO_DMACmd(ENABLE);
+#endif
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    WriteAddr /= 512;
+  }
+
+  /* Set Block Size for Card */ 
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (SD_OK != errorstatus)
+  {
+    return(errorstatus);
+  }
+
+  /*!< Send CMD24 WRITE_SINGLE_BLOCK */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /*!< In case of single data block transfer no need of stop command at all */
+#if defined (SD_POLLING_MODE) 
+  while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
+    {
+      if ((512 - bytestransferred) < 32)
+      {
+        restwords = ((512 - bytestransferred) % 4 == 0) ? ((512 - bytestransferred) / 4) : (( 512 -  bytestransferred) / 4 + 1);
+        for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
+        {
+          SDIO_WriteData(*tempbuff);
+        }
+      }
+      else
+      {
+        for (count = 0; count < 8; count++)
+        {
+          SDIO_WriteData(*(tempbuff + count));
+        }
+        tempbuff += 8;
+        bytestransferred += 32;
+      }
+    }
+  }
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
+    errorstatus = SD_TX_UNDERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+  
+#endif
+  
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to write blocks starting from a specified address in a card.
+  *         The Data transfer can be managed by DMA mode only. 
+  * @note   This operation should be followed by two functions to check if the 
+  *         DMA Controller and SD Card status.
+  *          - SD_ReadWaitOperation(): this function insure that the DMA
+  *            controller has finished all data transfer.
+  *          - SD_GetStatus(): to check that the SD Card has finished the 
+  *            data transfer and it is ready for data.     
+  * @param  WriteAddr: Address from where data are to be read.
+  * @param  writebuff: pointer to the buffer that contain the data to be transferred.
+  * @param  BlockSize: the SD card Data block size. The Block size should be 512.
+  * @param  NumberOfBlocks: number of blocks to be written.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
+{
+  SD_Error errorstatus = SD_OK;
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  StopCondition = 1;
+  SDIO->DCTRL = 0x0;
+
+  SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+  SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));
+  SDIO_DMACmd(ENABLE);
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    WriteAddr /= 512;
+  }
+
+  /* Set Block Size for Card */ 
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (SD_OK != errorstatus)
+  {
+    return(errorstatus);
+  }
+  
+  /*!< To improve performance */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+  errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+  /*!< To improve performance */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+
+  /*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);
+
+  if (SD_OK != errorstatus)
+  {
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  This function waits until the SDIO DMA data transfer is finished. 
+  *         This function should be called after SDIO_WriteBlock() and
+  *         SDIO_WriteMultiBlocks() function to insure that all data sent by the 
+  *         card are already transferred by the DMA controller.        
+  * @param  None.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WaitWriteOperation(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t timeout;
+
+  timeout = SD_DATATIMEOUT;
+  
+  while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
+  {
+    timeout--;
+  }
+  
+  DMAEndOfTransfer = 0x00;
+
+  timeout = SD_DATATIMEOUT;
+  
+  while(((SDIO->STA & SDIO_FLAG_TXACT)) && (timeout > 0))
+  {
+    timeout--;  
+  }
+
+  if (StopCondition == 1)
+  {
+    errorstatus = SD_StopTransfer();
+    StopCondition = 0;
+  }
+  
+  if ((timeout == 0) && (errorstatus == SD_OK))
+  {
+    errorstatus = SD_DATA_TIMEOUT;
+  }
+  
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+  
+  if (TransferError != SD_OK)
+  {
+    return(TransferError);
+  }
+  else
+  {
+    return(errorstatus);
+  }
+}
+
+/**
+  * @brief  Gets the cuurent data transfer state.
+  * @param  None
+  * @retval SDTransferState: Data Transfer state.
+  *   This value can be: 
+  *        - SD_TRANSFER_OK: No data transfer is acting
+  *        - SD_TRANSFER_BUSY: Data transfer is acting
+  */
+SDTransferState SD_GetTransferState(void)
+{
+  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
+  {
+    return(SD_TRANSFER_BUSY);
+  }
+  else
+  {
+    return(SD_TRANSFER_OK);
+  }
+}
+
+/**
+  * @brief  Aborts an ongoing data transfer.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_StopTransfer(void)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /*!< Send CMD12 STOP_TRANSMISSION  */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to erase memory area specified for the given card.
+  * @param  startaddr: the start address.
+  * @param  endaddr: the end address.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_Erase(uint64_t startaddr, uint64_t endaddr)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t delay = 0;
+  __IO uint32_t maxdelay = 0;
+  uint8_t cardstate = 0;
+
+  /*!< Check if the card coomnd class supports erase command */
+  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
+  {
+    errorstatus = SD_REQUEST_NOT_APPLICABLE;
+    return(errorstatus);
+  }
+
+  maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    startaddr /= 512;
+    endaddr /= 512;
+  }
+  
+  /*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    /*!< Send CMD32 SD_ERASE_GRP_START with argument as addr  */
+    SDIO_CmdInitStructure.SDIO_Argument =(uint32_t)startaddr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+
+    /*!< Send CMD33 SD_ERASE_GRP_END with argument as addr  */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)endaddr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+  }
+
+  /*!< Send CMD38 ERASE */
+  SDIO_CmdInitStructure.SDIO_Argument = 0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_ERASE);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  for (delay = 0; delay < maxdelay; delay++)
+  {}
+
+  /*!< Wait till the card is in programming state */
+  errorstatus = IsCardProgramming(&cardstate);
+  delay = SD_DATATIMEOUT;
+  while ((delay > 0) && (errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
+  {
+    errorstatus = IsCardProgramming(&cardstate);
+    delay--;
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns the current card's status.
+  * @param  pcardstatus: pointer to the buffer that will contain the SD card 
+  *         status (Card Status register).
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SendStatus(uint32_t *pcardstatus)
+{
+  SD_Error errorstatus = SD_OK;
+
+  if (pcardstatus == NULL)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  *pcardstatus = SDIO_GetResponse(SDIO_RESP1);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns the current SD card's status.
+  * @param  psdstatus: pointer to the buffer that will contain the SD card status 
+  *         (SD Status register).
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SendSDStatus(uint32_t *psdstatus)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t count = 0;
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  /*!< Set block size for card if it is not equal to current block size for card. */
+  SDIO_CmdInitStructure.SDIO_Argument = 64;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /*!< CMD55 */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 64;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /*!< Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
+  SDIO_CmdInitStructure.SDIO_Argument = 0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SD_CMD_SD_APP_STAUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+    {
+      for (count = 0; count < 8; count++)
+      {
+        *(psdstatus + count) = SDIO_ReadData();
+      }
+      psdstatus += 8;
+    }
+  }
+
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+    errorstatus = SD_RX_OVERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+
+  count = SD_DATATIMEOUT;
+  while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
+  {
+    *psdstatus = SDIO_ReadData();
+    psdstatus++;
+    count--;
+  }
+  /*!< Clear all the static status flags*/
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to process all the interrupts that are high.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ProcessIRQSrc(void)
+{ 
+  if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
+  {
+    TransferError = SD_OK;
+    SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
+    TransferEnd = 1;
+  }  
+  else if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
+    TransferError = SD_DATA_CRC_FAIL;
+  }
+  else if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
+    TransferError = SD_DATA_TIMEOUT;
+  }
+  else if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
+    TransferError = SD_RX_OVERRUN;
+  }
+  else if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
+    TransferError = SD_TX_UNDERRUN;
+  }
+  else if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
+    TransferError = SD_START_BIT_ERR;
+  }
+
+  SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+  return(TransferError);
+}
+
+/**
+  * @brief  This function waits until the SDIO DMA data transfer is finished. 
+  * @param  None.
+  * @retval None.
+  */
+void SD_ProcessDMAIRQ(void)
+{
+  if(DMA2->LISR & SD_SDIO_DMA_FLAG_TCIF)
+  {
+    DMAEndOfTransfer = 0x01;
+    DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_TCIF|SD_SDIO_DMA_FLAG_FEIF);
+  }
+}
+
+/**
+  * @brief  Checks for error conditions for CMD0.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdError(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t timeout;
+
+  timeout = SDIO_CMD0TIMEOUT; /*!< 10000 */
+
+  while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
+  {
+    timeout--;
+  }
+
+  if (timeout == 0)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R7 response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp7Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t timeout = SDIO_CMD0TIMEOUT;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
+  {
+    timeout--;
+    status = SDIO->STA;
+  }
+
+  if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
+  {
+    /*!< Card is not V2.0 complient or card does not support the set voltage range */
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+
+  if (status & SDIO_FLAG_CMDREND)
+  {
+    /*!< Card is SD V2.0 compliant */
+    errorstatus = SD_OK;
+    SDIO_ClearFlag(SDIO_FLAG_CMDREND);
+    return(errorstatus);
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R1 response.
+  * @param  cmd: The sent command index.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp1Error(uint8_t cmd)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t response_r1;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /*!< Check response received is of desired command */
+  if (SDIO_GetCommandResponse() != cmd)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /*!< We have received response, retrieve it for analysis  */
+  response_r1 = SDIO_GetResponse(SDIO_RESP1);
+
+  if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
+  {
+    return(errorstatus);
+  }
+
+  if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
+  {
+    return(SD_ADDR_OUT_OF_RANGE);
+  }
+
+  if (response_r1 & SD_OCR_ADDR_MISALIGNED)
+  {
+    return(SD_ADDR_MISALIGNED);
+  }
+
+  if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
+  {
+    return(SD_BLOCK_LEN_ERR);
+  }
+
+  if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
+  {
+    return(SD_ERASE_SEQ_ERR);
+  }
+
+  if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
+  {
+    return(SD_BAD_ERASE_PARAM);
+  }
+
+  if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
+  {
+    return(SD_WRITE_PROT_VIOLATION);
+  }
+
+  if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
+  {
+    return(SD_LOCK_UNLOCK_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (response_r1 & SD_OCR_CARD_ECC_FAILED)
+  {
+    return(SD_CARD_ECC_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_CC_ERROR)
+  {
+    return(SD_CC_ERROR);
+  }
+
+  if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
+  {
+    return(SD_STREAM_READ_UNDERRUN);
+  }
+
+  if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
+  {
+    return(SD_STREAM_WRITE_OVERRUN);
+  }
+
+  if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
+  {
+    return(SD_CID_CSD_OVERWRITE);
+  }
+
+  if (response_r1 & SD_OCR_WP_ERASE_SKIP)
+  {
+    return(SD_WP_ERASE_SKIP);
+  }
+
+  if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
+  {
+    return(SD_CARD_ECC_DISABLED);
+  }
+
+  if (response_r1 & SD_OCR_ERASE_RESET)
+  {
+    return(SD_ERASE_RESET);
+  }
+
+  if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
+  {
+    return(SD_AKE_SEQ_ERROR);
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R3 (OCR) response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp3Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R2 (CID or CSD) response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp2Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R6 (RCA) response.
+  * @param  cmd: The sent command index.
+  * @param  prca: pointer to the variable that will contain the SD card relative 
+  *         address RCA. 
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t response_r1;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /*!< Check response received is of desired command */
+  if (SDIO_GetCommandResponse() != cmd)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /*!< We have received response, retrieve it.  */
+  response_r1 = SDIO_GetResponse(SDIO_RESP1);
+
+  if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
+  {
+    *prca = (uint16_t) (response_r1 >> 16);
+    return(errorstatus);
+  }
+
+  if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (response_r1 & SD_R6_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (response_r1 & SD_R6_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enables or disables the SDIO wide bus mode.
+  * @param  NewState: new state of the SDIO wide bus mode.
+  *   This parameter can be: ENABLE or DISABLE.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error SDEnWideBus(FunctionalState NewState)
+{
+  SD_Error errorstatus = SD_OK;
+
+  uint32_t scr[2] = {0, 0};
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  /*!< Get SCR Register */
+  errorstatus = FindSCR(RCA, scr);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /*!< If wide bus operation to be enabled */
+  if (NewState == ENABLE)
+  {
+    /*!< If requested card supports wide bus operation */
+    if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
+    {
+      /*!< Send CMD55 APP_CMD with argument as card's RCA.*/
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      /*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x2;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+      return(errorstatus);
+    }
+    else
+    {
+      errorstatus = SD_REQUEST_NOT_APPLICABLE;
+      return(errorstatus);
+    }
+  }   /*!< If wide bus operation to be disabled */
+  else
+  {
+    /*!< If requested card supports 1 bit mode operation */
+    if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
+    {
+      /*!< Send CMD55 APP_CMD with argument as card's RCA.*/
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+      errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      /*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      return(errorstatus);
+    }
+    else
+    {
+      errorstatus = SD_REQUEST_NOT_APPLICABLE;
+      return(errorstatus);
+    }
+  }
+}
+
+/**
+  * @brief  Checks if the SD card is in programming state.
+  * @param  pstatus: pointer to the variable that will contain the SD card state.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error IsCardProgramming(uint8_t *pstatus)
+{
+  SD_Error errorstatus = SD_OK;
+  __IO uint32_t respR1 = 0, status = 0;
+
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  status = SDIO->STA;
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  status = (uint32_t)SDIO_GetCommandResponse();
+
+  /*!< Check response received is of desired command */
+  if (status != SD_CMD_SEND_STATUS)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+
+  /*!< We have received response, retrieve it for analysis  */
+  respR1 = SDIO_GetResponse(SDIO_RESP1);
+
+  /*!< Find out card status */
+  *pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
+
+  if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
+  {
+    return(errorstatus);
+  }
+
+  if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
+  {
+    return(SD_ADDR_OUT_OF_RANGE);
+  }
+
+  if (respR1 & SD_OCR_ADDR_MISALIGNED)
+  {
+    return(SD_ADDR_MISALIGNED);
+  }
+
+  if (respR1 & SD_OCR_BLOCK_LEN_ERR)
+  {
+    return(SD_BLOCK_LEN_ERR);
+  }
+
+  if (respR1 & SD_OCR_ERASE_SEQ_ERR)
+  {
+    return(SD_ERASE_SEQ_ERR);
+  }
+
+  if (respR1 & SD_OCR_BAD_ERASE_PARAM)
+  {
+    return(SD_BAD_ERASE_PARAM);
+  }
+
+  if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
+  {
+    return(SD_WRITE_PROT_VIOLATION);
+  }
+
+  if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
+  {
+    return(SD_LOCK_UNLOCK_FAILED);
+  }
+
+  if (respR1 & SD_OCR_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  if (respR1 & SD_OCR_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (respR1 & SD_OCR_CARD_ECC_FAILED)
+  {
+    return(SD_CARD_ECC_FAILED);
+  }
+
+  if (respR1 & SD_OCR_CC_ERROR)
+  {
+    return(SD_CC_ERROR);
+  }
+
+  if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
+  {
+    return(SD_STREAM_READ_UNDERRUN);
+  }
+
+  if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
+  {
+    return(SD_STREAM_WRITE_OVERRUN);
+  }
+
+  if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
+  {
+    return(SD_CID_CSD_OVERWRITE);
+  }
+
+  if (respR1 & SD_OCR_WP_ERASE_SKIP)
+  {
+    return(SD_WP_ERASE_SKIP);
+  }
+
+  if (respR1 & SD_OCR_CARD_ECC_DISABLED)
+  {
+    return(SD_CARD_ECC_DISABLED);
+  }
+
+  if (respR1 & SD_OCR_ERASE_RESET)
+  {
+    return(SD_ERASE_RESET);
+  }
+
+  if (respR1 & SD_OCR_AKE_SEQ_ERROR)
+  {
+    return(SD_AKE_SEQ_ERROR);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Find the SD card SCR register value.
+  * @param  rca: selected card address.
+  * @param  pscr: pointer to the buffer that will contain the SCR value.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
+{
+  uint32_t index = 0;
+  SD_Error errorstatus = SD_OK;
+  uint32_t tempscr[2] = {0, 0};
+
+  /*!< Set Block Size To 8 Bytes */
+  /*!< Send CMD55 APP_CMD with argument as card's RCA */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /*!< Send CMD55 APP_CMD with argument as card's RCA */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 8;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+
+  /*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
+    {
+      *(tempscr + index) = SDIO_ReadData();
+      index++;
+    }
+  }
+
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+    errorstatus = SD_RX_OVERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+
+  /*!< Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
+
+  *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Converts the number of bytes in power of two and returns the power.
+  * @param  NumberOfBytes: number of bytes.
+  * @retval None
+  */
+uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
+{
+  uint8_t count = 0;
+
+  while (NumberOfBytes != 1)
+  {
+    NumberOfBytes >>= 1;
+    count++;
+  }
+  return(count);
+}
+
+/**
+* @brief  Switch mode High-Speed 
+* @note   This function must be used after "Transfer State"
+* @note   This operation should be followed by the configuration 
+*         of PLL to have SDIOCK clock between 67 and 75 MHz
+* @param  None
+* @retval SD_Error: SD Card Error code.
+*/
+SD_Error SD_HighSpeed (void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t scr[2] = {0, 0};
+  uint32_t SD_SPEC = 0 ;
+  uint8_t hs[64] = {0} ;
+  uint32_t  count = 0, *tempbuff = (uint32_t *)hs;
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  StopCondition = 0;
+
+  SDIO->DCTRL = 0x0;
+
+  /*!< Get SCR Register */
+  errorstatus = FindSCR(RCA, scr);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /* Test the Version supported by the card*/ 
+  SD_SPEC = (scr[1]  & 0x01000000)||(scr[1]  & 0x02000000);
+
+  if (SD_SPEC != SD_ALLZERO)
+  {
+    /* Set Block Size for Card */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)64;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+    errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+    SDIO_DataInitStructure.SDIO_DataLength = 64;
+    SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b ;
+    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+    SDIO_DataConfig(&SDIO_DataInitStructure);
+
+    /*!< Send CMD6 switch mode */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x80FFFF01;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_HS_SWITCH;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure); 
+    errorstatus = CmdResp1Error(SD_CMD_HS_SWITCH);
+
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+    while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+    {
+      if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+      {
+        for (count = 0; count < 8; count++)
+        {
+          *(tempbuff + count) = SDIO_ReadData();
+        }
+        tempbuff += 8;
+      }
+    }
+    
+    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+      errorstatus = SD_DATA_TIMEOUT;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+      errorstatus = SD_DATA_CRC_FAIL;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+      errorstatus = SD_RX_OVERRUN;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+      errorstatus = SD_START_BIT_ERR;
+      return(errorstatus);
+    }
+    count = SD_DATATIMEOUT;
+    while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
+    {
+      *tempbuff = SDIO_ReadData();
+      tempbuff++;
+      count--;
+    }
+
+    /*!< Clear all the static flags */
+    SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+    /* Test if the switch mode HS is ok */
+    if ((hs[13]& 0x2)==0x2)
+    {
+      errorstatus=SD_OK;
+    }
+    else
+    {
+      errorstatus=SD_UNSUPPORTED_FEATURE ;
+    }  
+  }
+  return(errorstatus);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */  
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/lib/stm324x7i_eval_sdio_sd.h b/stm/lib/stm324x7i_eval_sdio_sd.h
new file mode 100644
index 0000000000000000000000000000000000000000..31214385c8bc078ee6d5ee9f18b947032ef79da3
--- /dev/null
+++ b/stm/lib/stm324x7i_eval_sdio_sd.h
@@ -0,0 +1,408 @@
+/**
+  ******************************************************************************
+  * @file    stm324x7i_eval_sdio_sd.h
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    11-January-2013
+  * @brief   This file contains all the functions prototypes for the SD Card 
+  *          stm324x7i_eval_sdio_sd driver firmware library.
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM324x7I_EVAL_SDIO_SD_H
+#define __STM324x7I_EVAL_SDIO_SD_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm324x7i_eval.h"
+
+/** @addtogroup Utilities
+  * @{
+  */
+  
+/** @addtogroup STM32_EVAL
+  * @{
+  */ 
+
+/** @addtogroup STM324x7I_EVAL
+  * @{
+  */
+  
+/** @addtogroup STM324x7I_EVAL_SDIO_SD
+  * @{
+  */  
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Exported_Types
+  * @{
+  */ 
+typedef enum
+{
+/** 
+  * @brief  SDIO specific error defines  
+  */   
+  SD_CMD_CRC_FAIL                    = (1), /*!< Command response received (but CRC check failed) */
+  SD_DATA_CRC_FAIL                   = (2), /*!< Data bock sent/received (CRC check Failed) */
+  SD_CMD_RSP_TIMEOUT                 = (3), /*!< Command response timeout */
+  SD_DATA_TIMEOUT                    = (4), /*!< Data time out */
+  SD_TX_UNDERRUN                     = (5), /*!< Transmit FIFO under-run */
+  SD_RX_OVERRUN                      = (6), /*!< Receive FIFO over-run */
+  SD_START_BIT_ERR                   = (7), /*!< Start bit not detected on all data signals in widE bus mode */
+  SD_CMD_OUT_OF_RANGE                = (8), /*!< CMD's argument was out of range.*/
+  SD_ADDR_MISALIGNED                 = (9), /*!< Misaligned address */
+  SD_BLOCK_LEN_ERR                   = (10), /*!< Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
+  SD_ERASE_SEQ_ERR                   = (11), /*!< An error in the sequence of erase command occurs.*/
+  SD_BAD_ERASE_PARAM                 = (12), /*!< An Invalid selection for erase groups */
+  SD_WRITE_PROT_VIOLATION            = (13), /*!< Attempt to program a write protect block */
+  SD_LOCK_UNLOCK_FAILED              = (14), /*!< Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */
+  SD_COM_CRC_FAILED                  = (15), /*!< CRC check of the previous command failed */
+  SD_ILLEGAL_CMD                     = (16), /*!< Command is not legal for the card state */
+  SD_CARD_ECC_FAILED                 = (17), /*!< Card internal ECC was applied but failed to correct the data */
+  SD_CC_ERROR                        = (18), /*!< Internal card controller error */
+  SD_GENERAL_UNKNOWN_ERROR           = (19), /*!< General or Unknown error */
+  SD_STREAM_READ_UNDERRUN            = (20), /*!< The card could not sustain data transfer in stream read operation. */
+  SD_STREAM_WRITE_OVERRUN            = (21), /*!< The card could not sustain data programming in stream mode */
+  SD_CID_CSD_OVERWRITE               = (22), /*!< CID/CSD overwrite error */
+  SD_WP_ERASE_SKIP                   = (23), /*!< only partial address space was erased */
+  SD_CARD_ECC_DISABLED               = (24), /*!< Command has been executed without using internal ECC */
+  SD_ERASE_RESET                     = (25), /*!< Erase sequence was cleared before executing because an out of erase sequence command was received */
+  SD_AKE_SEQ_ERROR                   = (26), /*!< Error in sequence of authentication. */
+  SD_INVALID_VOLTRANGE               = (27),
+  SD_ADDR_OUT_OF_RANGE               = (28),
+  SD_SWITCH_ERROR                    = (29),
+  SD_SDIO_DISABLED                   = (30),
+  SD_SDIO_FUNCTION_BUSY              = (31),
+  SD_SDIO_FUNCTION_FAILED            = (32),
+  SD_SDIO_UNKNOWN_FUNCTION           = (33),
+
+/** 
+  * @brief  Standard error defines   
+  */ 
+  SD_INTERNAL_ERROR, 
+  SD_NOT_CONFIGURED,
+  SD_REQUEST_PENDING, 
+  SD_REQUEST_NOT_APPLICABLE, 
+  SD_INVALID_PARAMETER,  
+  SD_UNSUPPORTED_FEATURE,  
+  SD_UNSUPPORTED_HW,  
+  SD_ERROR,  
+  SD_OK = 0 
+} SD_Error;
+
+/** 
+  * @brief  SDIO Transfer state  
+  */   
+typedef enum
+{
+  SD_TRANSFER_OK  = 0,
+  SD_TRANSFER_BUSY = 1,
+  SD_TRANSFER_ERROR
+} SDTransferState;
+
+/** 
+  * @brief  SD Card States 
+  */   
+typedef enum
+{
+  SD_CARD_READY                  = ((uint32_t)0x00000001),
+  SD_CARD_IDENTIFICATION         = ((uint32_t)0x00000002),
+  SD_CARD_STANDBY                = ((uint32_t)0x00000003),
+  SD_CARD_TRANSFER               = ((uint32_t)0x00000004),
+  SD_CARD_SENDING                = ((uint32_t)0x00000005),
+  SD_CARD_RECEIVING              = ((uint32_t)0x00000006),
+  SD_CARD_PROGRAMMING            = ((uint32_t)0x00000007),
+  SD_CARD_DISCONNECTED           = ((uint32_t)0x00000008),
+  SD_CARD_ERROR                  = ((uint32_t)0x000000FF)
+}SDCardState;
+
+
+/** 
+  * @brief  Card Specific Data: CSD Register   
+  */ 
+typedef struct
+{
+  __IO uint8_t  CSDStruct;            /*!< CSD structure */
+  __IO uint8_t  SysSpecVersion;       /*!< System specification version */
+  __IO uint8_t  Reserved1;            /*!< Reserved */
+  __IO uint8_t  TAAC;                 /*!< Data read access-time 1 */
+  __IO uint8_t  NSAC;                 /*!< Data read access-time 2 in CLK cycles */
+  __IO uint8_t  MaxBusClkFrec;        /*!< Max. bus clock frequency */
+  __IO uint16_t CardComdClasses;      /*!< Card command classes */
+  __IO uint8_t  RdBlockLen;           /*!< Max. read data block length */
+  __IO uint8_t  PartBlockRead;        /*!< Partial blocks for read allowed */
+  __IO uint8_t  WrBlockMisalign;      /*!< Write block misalignment */
+  __IO uint8_t  RdBlockMisalign;      /*!< Read block misalignment */
+  __IO uint8_t  DSRImpl;              /*!< DSR implemented */
+  __IO uint8_t  Reserved2;            /*!< Reserved */
+  __IO uint32_t DeviceSize;           /*!< Device Size */
+  __IO uint8_t  MaxRdCurrentVDDMin;   /*!< Max. read current @ VDD min */
+  __IO uint8_t  MaxRdCurrentVDDMax;   /*!< Max. read current @ VDD max */
+  __IO uint8_t  MaxWrCurrentVDDMin;   /*!< Max. write current @ VDD min */
+  __IO uint8_t  MaxWrCurrentVDDMax;   /*!< Max. write current @ VDD max */
+  __IO uint8_t  DeviceSizeMul;        /*!< Device size multiplier */
+  __IO uint8_t  EraseGrSize;          /*!< Erase group size */
+  __IO uint8_t  EraseGrMul;           /*!< Erase group size multiplier */
+  __IO uint8_t  WrProtectGrSize;      /*!< Write protect group size */
+  __IO uint8_t  WrProtectGrEnable;    /*!< Write protect group enable */
+  __IO uint8_t  ManDeflECC;           /*!< Manufacturer default ECC */
+  __IO uint8_t  WrSpeedFact;          /*!< Write speed factor */
+  __IO uint8_t  MaxWrBlockLen;        /*!< Max. write data block length */
+  __IO uint8_t  WriteBlockPaPartial;  /*!< Partial blocks for write allowed */
+  __IO uint8_t  Reserved3;            /*!< Reserded */
+  __IO uint8_t  ContentProtectAppli;  /*!< Content protection application */
+  __IO uint8_t  FileFormatGrouop;     /*!< File format group */
+  __IO uint8_t  CopyFlag;             /*!< Copy flag (OTP) */
+  __IO uint8_t  PermWrProtect;        /*!< Permanent write protection */
+  __IO uint8_t  TempWrProtect;        /*!< Temporary write protection */
+  __IO uint8_t  FileFormat;           /*!< File Format */
+  __IO uint8_t  ECC;                  /*!< ECC code */
+  __IO uint8_t  CSD_CRC;              /*!< CSD CRC */
+  __IO uint8_t  Reserved4;            /*!< always 1*/
+} SD_CSD;
+
+/** 
+  * @brief  Card Identification Data: CID Register   
+  */
+typedef struct
+{
+  __IO uint8_t  ManufacturerID;       /*!< ManufacturerID */
+  __IO uint16_t OEM_AppliID;          /*!< OEM/Application ID */
+  __IO uint32_t ProdName1;            /*!< Product Name part1 */
+  __IO uint8_t  ProdName2;            /*!< Product Name part2*/
+  __IO uint8_t  ProdRev;              /*!< Product Revision */
+  __IO uint32_t ProdSN;               /*!< Product Serial Number */
+  __IO uint8_t  Reserved1;            /*!< Reserved1 */
+  __IO uint16_t ManufactDate;         /*!< Manufacturing Date */
+  __IO uint8_t  CID_CRC;              /*!< CID CRC */
+  __IO uint8_t  Reserved2;            /*!< always 1 */
+} SD_CID;
+
+/** 
+  * @brief SD Card Status 
+  */
+typedef struct
+{
+  __IO uint8_t DAT_BUS_WIDTH;
+  __IO uint8_t SECURED_MODE;
+  __IO uint16_t SD_CARD_TYPE;
+  __IO uint32_t SIZE_OF_PROTECTED_AREA;
+  __IO uint8_t SPEED_CLASS;
+  __IO uint8_t PERFORMANCE_MOVE;
+  __IO uint8_t AU_SIZE;
+  __IO uint16_t ERASE_SIZE;
+  __IO uint8_t ERASE_TIMEOUT;
+  __IO uint8_t ERASE_OFFSET;
+} SD_CardStatus;
+
+
+/** 
+  * @brief SD Card information 
+  */
+typedef struct
+{
+  SD_CSD SD_csd;
+  SD_CID SD_cid;
+  uint64_t CardCapacity;  /*!< Card Capacity */
+  uint32_t CardBlockSize; /*!< Card Block Size */
+  uint16_t RCA;
+  uint8_t CardType;
+} SD_CardInfo;
+
+/**
+  * @}
+  */
+  
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Exported_Constants
+  * @{
+  */ 
+
+/** 
+  * @brief SDIO Commands  Index 
+  */
+#define SD_CMD_GO_IDLE_STATE                       ((uint8_t)0)
+#define SD_CMD_SEND_OP_COND                        ((uint8_t)1)
+#define SD_CMD_ALL_SEND_CID                        ((uint8_t)2)
+#define SD_CMD_SET_REL_ADDR                        ((uint8_t)3) /*!< SDIO_SEND_REL_ADDR for SD Card */
+#define SD_CMD_SET_DSR                             ((uint8_t)4)
+#define SD_CMD_SDIO_SEN_OP_COND                    ((uint8_t)5)
+#define SD_CMD_HS_SWITCH                           ((uint8_t)6)
+#define SD_CMD_SEL_DESEL_CARD                      ((uint8_t)7)
+#define SD_CMD_HS_SEND_EXT_CSD                     ((uint8_t)8)
+#define SD_CMD_SEND_CSD                            ((uint8_t)9)
+#define SD_CMD_SEND_CID                            ((uint8_t)10)
+#define SD_CMD_READ_DAT_UNTIL_STOP                 ((uint8_t)11) /*!< SD Card doesn't support it */
+#define SD_CMD_STOP_TRANSMISSION                   ((uint8_t)12)
+#define SD_CMD_SEND_STATUS                         ((uint8_t)13)
+#define SD_CMD_HS_BUSTEST_READ                     ((uint8_t)14)
+#define SD_CMD_GO_INACTIVE_STATE                   ((uint8_t)15)
+#define SD_CMD_SET_BLOCKLEN                        ((uint8_t)16)
+#define SD_CMD_READ_SINGLE_BLOCK                   ((uint8_t)17)
+#define SD_CMD_READ_MULT_BLOCK                     ((uint8_t)18)
+#define SD_CMD_HS_BUSTEST_WRITE                    ((uint8_t)19)
+#define SD_CMD_WRITE_DAT_UNTIL_STOP                ((uint8_t)20) /*!< SD Card doesn't support it */
+#define SD_CMD_SET_BLOCK_COUNT                     ((uint8_t)23) /*!< SD Card doesn't support it */
+#define SD_CMD_WRITE_SINGLE_BLOCK                  ((uint8_t)24)
+#define SD_CMD_WRITE_MULT_BLOCK                    ((uint8_t)25)
+#define SD_CMD_PROG_CID                            ((uint8_t)26) /*!< reserved for manufacturers */
+#define SD_CMD_PROG_CSD                            ((uint8_t)27)
+#define SD_CMD_SET_WRITE_PROT                      ((uint8_t)28)
+#define SD_CMD_CLR_WRITE_PROT                      ((uint8_t)29)
+#define SD_CMD_SEND_WRITE_PROT                     ((uint8_t)30)
+#define SD_CMD_SD_ERASE_GRP_START                  ((uint8_t)32) /*!< To set the address of the first write
+                                                                  block to be erased. (For SD card only) */
+#define SD_CMD_SD_ERASE_GRP_END                    ((uint8_t)33) /*!< To set the address of the last write block of the
+                                                                  continuous range to be erased. (For SD card only) */
+#define SD_CMD_ERASE_GRP_START                     ((uint8_t)35) /*!< To set the address of the first write block to be erased.
+                                                                  (For MMC card only spec 3.31) */
+
+#define SD_CMD_ERASE_GRP_END                       ((uint8_t)36) /*!< To set the address of the last write block of the
+                                                                  continuous range to be erased. (For MMC card only spec 3.31) */
+
+#define SD_CMD_ERASE                               ((uint8_t)38)
+#define SD_CMD_FAST_IO                             ((uint8_t)39) /*!< SD Card doesn't support it */
+#define SD_CMD_GO_IRQ_STATE                        ((uint8_t)40) /*!< SD Card doesn't support it */
+#define SD_CMD_LOCK_UNLOCK                         ((uint8_t)42)
+#define SD_CMD_APP_CMD                             ((uint8_t)55)
+#define SD_CMD_GEN_CMD                             ((uint8_t)56)
+#define SD_CMD_NO_CMD                              ((uint8_t)64)
+
+/** 
+  * @brief Following commands are SD Card Specific commands.
+  *        SDIO_APP_CMD should be sent before sending these commands. 
+  */
+#define SD_CMD_APP_SD_SET_BUSWIDTH                 ((uint8_t)6)  /*!< For SD Card only */
+#define SD_CMD_SD_APP_STAUS                        ((uint8_t)13) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SEND_NUM_WRITE_BLOCKS        ((uint8_t)22) /*!< For SD Card only */
+#define SD_CMD_SD_APP_OP_COND                      ((uint8_t)41) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SET_CLR_CARD_DETECT          ((uint8_t)42) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SEND_SCR                     ((uint8_t)51) /*!< For SD Card only */
+#define SD_CMD_SDIO_RW_DIRECT                      ((uint8_t)52) /*!< For SD I/O Card only */
+#define SD_CMD_SDIO_RW_EXTENDED                    ((uint8_t)53) /*!< For SD I/O Card only */
+
+/** 
+  * @brief Following commands are SD Card Specific security commands.
+  *        SDIO_APP_CMD should be sent before sending these commands. 
+  */
+#define SD_CMD_SD_APP_GET_MKB                      ((uint8_t)43) /*!< For SD Card only */
+#define SD_CMD_SD_APP_GET_MID                      ((uint8_t)44) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SET_CER_RN1                  ((uint8_t)45) /*!< For SD Card only */
+#define SD_CMD_SD_APP_GET_CER_RN2                  ((uint8_t)46) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SET_CER_RES2                 ((uint8_t)47) /*!< For SD Card only */
+#define SD_CMD_SD_APP_GET_CER_RES1                 ((uint8_t)48) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SECURE_READ_MULTIPLE_BLOCK   ((uint8_t)18) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  ((uint8_t)25) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SECURE_ERASE                 ((uint8_t)38) /*!< For SD Card only */
+#define SD_CMD_SD_APP_CHANGE_SECURE_AREA           ((uint8_t)49) /*!< For SD Card only */
+#define SD_CMD_SD_APP_SECURE_WRITE_MKB             ((uint8_t)48) /*!< For SD Card only */
+  
+/* Uncomment the following line to select the SDIO Data transfer mode */  
+#if !defined (SD_DMA_MODE) && !defined (SD_POLLING_MODE)
+/*#define SD_DMA_MODE                                ((uint32_t)0x00000000)*/
+#define SD_POLLING_MODE                            ((uint32_t)0x00000002)
+#endif
+
+/**
+  * @brief  SD detection on its memory slot
+  */
+#define SD_PRESENT                                 ((uint8_t)0x01)
+#define SD_NOT_PRESENT                             ((uint8_t)0x00)
+
+/** 
+  * @brief Supported SD Memory Cards 
+  */
+#define SDIO_STD_CAPACITY_SD_CARD_V1_1             ((uint32_t)0x00000000)
+#define SDIO_STD_CAPACITY_SD_CARD_V2_0             ((uint32_t)0x00000001)
+#define SDIO_HIGH_CAPACITY_SD_CARD                 ((uint32_t)0x00000002)
+#define SDIO_MULTIMEDIA_CARD                       ((uint32_t)0x00000003)
+#define SDIO_SECURE_DIGITAL_IO_CARD                ((uint32_t)0x00000004)
+#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD            ((uint32_t)0x00000005)
+#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD          ((uint32_t)0x00000006)
+#define SDIO_HIGH_CAPACITY_MMC_CARD                ((uint32_t)0x00000007)
+
+/**
+  * @}
+  */ 
+  
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Exported_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup STM324x7I_EVAL_SDIO_SD_Exported_Functions
+  * @{
+  */ 
+void SD_DeInit(void);
+SD_Error SD_Init(void);
+SDTransferState SD_GetStatus(void);
+SDCardState SD_GetState(void);
+uint8_t SD_Detect(void);
+SD_Error SD_PowerON(void);
+SD_Error SD_PowerOFF(void);
+SD_Error SD_InitializeCards(void);
+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);
+SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus);
+SD_Error SD_EnableWideBusOperation(uint32_t WideMode);
+SD_Error SD_SelectDeselect(uint64_t addr);
+SD_Error SD_ReadBlock(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize);
+SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint64_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks);
+SD_Error SD_WriteBlock(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize);
+SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint64_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks);
+SDTransferState SD_GetTransferState(void);
+SD_Error SD_StopTransfer(void);
+SD_Error SD_Erase(uint64_t startaddr, uint64_t endaddr);
+SD_Error SD_SendStatus(uint32_t *pcardstatus);
+SD_Error SD_SendSDStatus(uint32_t *psdstatus);
+SD_Error SD_ProcessIRQSrc(void);
+void SD_ProcessDMAIRQ(void);
+SD_Error SD_WaitReadOperation(void);
+SD_Error SD_WaitWriteOperation(void);
+SD_Error SD_HighSpeed(void);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM324x7I_EVAL_SDIO_SD_H */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/lib/stm32f4xx_sdio.c b/stm/lib/stm32f4xx_sdio.c
new file mode 100644
index 0000000000000000000000000000000000000000..8ee5d55b89027e18af0b3af7225694d711754ca6
--- /dev/null
+++ b/stm/lib/stm32f4xx_sdio.c
@@ -0,0 +1,1012 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_sdio.c
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    11-January-2013
+  * @brief   This file provides firmware functions to manage the following 
+  *          functionalities of the Secure digital input/output interface (SDIO) 
+  *          peripheral:
+  *           + Initialization and Configuration
+  *           + Command path state machine (CPSM) management
+  *           + Data path state machine (DPSM) management
+  *           + SDIO IO Cards mode management
+  *           + CE-ATA mode management
+  *           + DMA transfers management
+  *           + Interrupts and flags management
+  *
+@verbatim
+
+ ===================================================================
+                 ##### How to use this driver #####
+ ===================================================================
+ [..]
+   (#) The SDIO clock (SDIOCLK = 48 MHz) is coming from a specific output of PLL 
+       (PLL48CLK). Before to start working with SDIO peripheral make sure that the
+       PLL is well configured.
+       The SDIO peripheral uses two clock signals:
+       (++) SDIO adapter clock (SDIOCLK = 48 MHz)
+       (++) APB2 bus clock (PCLK2)
+       
+       -@@- PCLK2 and SDIO_CK clock frequencies must respect the following condition:
+           Frequency(PCLK2) >= (3 / 8 x Frequency(SDIO_CK))
+  
+   (#) Enable peripheral clock using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE).
+  
+   (#) According to the SDIO mode, enable the GPIO clocks using 
+       RCC_AHB1PeriphClockCmd() function. 
+       The I/O can be one of the following configurations:
+       (++) 1-bit data length: SDIO_CMD, SDIO_CK and D0.
+       (++) 4-bit data length: SDIO_CMD, SDIO_CK and D[3:0].
+       (++) 8-bit data length: SDIO_CMD, SDIO_CK and D[7:0].      
+  
+   (#) Peripheral alternate function: 
+       (++) Connect the pin to the desired peripherals' Alternate Function (AF) 
+           using GPIO_PinAFConfig() function
+       (++) Configure the desired pin in alternate function by: 
+           GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
+       (++) Select the type, pull-up/pull-down and output speed via GPIO_PuPd, 
+           GPIO_OType and GPIO_Speed members
+       (++) Call GPIO_Init() function
+  
+   (#) Program the Clock Edge, Clock Bypass, Clock Power Save, Bus Wide, 
+       hardware, flow control and the Clock Divider using the SDIO_Init()
+       function.
+  
+   (#) Enable the Power ON State using the SDIO_SetPowerState(SDIO_PowerState_ON) 
+       function.
+                
+   (#) Enable the clock using the SDIO_ClockCmd() function.
+  
+   (#) Enable the NVIC and the corresponding interrupt using the function 
+       SDIO_ITConfig() if you need to use interrupt mode. 
+  
+   (#) When using the DMA mode 
+       (++) Configure the DMA using DMA_Init() function
+       (++) Active the needed channel Request using SDIO_DMACmd() function
+  
+   (#) Enable the DMA using the DMA_Cmd() function, when using DMA mode. 
+  
+   (#) To control the CPSM (Command Path State Machine) and send 
+       commands to the card use the SDIO_SendCommand(), 
+       SDIO_GetCommandResponse() and SDIO_GetResponse() functions. First, user has
+       to fill the command structure (pointer to SDIO_CmdInitTypeDef) according 
+       to the selected command to be sent.
+       The parameters that should be filled are:
+       (++) Command Argument
+       (++) Command Index
+       (++) Command Response type
+       (++) Command Wait
+       (++) CPSM Status (Enable or Disable).
+  
+       -@@- To check if the command is well received, read the SDIO_CMDRESP
+           register using the SDIO_GetCommandResponse().
+           The SDIO responses registers (SDIO_RESP1 to SDIO_RESP2), use the
+           SDIO_GetResponse() function.
+  
+   (#) To control the DPSM (Data Path State Machine) and send/receive 
+       data to/from the card use the SDIO_DataConfig(), SDIO_GetDataCounter(), 
+       SDIO_ReadData(), SDIO_WriteData() and SDIO_GetFIFOCount() functions.
+  
+ *** Read Operations ***
+ =======================
+ [..]
+   (#) First, user has to fill the data structure (pointer to
+       SDIO_DataInitTypeDef) according to the selected data type to be received.
+       The parameters that should be filled are:
+       (++) Data TimeOut
+       (++) Data Length
+       (++) Data Block size
+       (++) Data Transfer direction: should be from card (To SDIO)
+       (++) Data Transfer mode
+       (++) DPSM Status (Enable or Disable)
+                                     
+   (#) Configure the SDIO resources to receive the data from the card
+       according to selected transfer mode (Refer to Step 8, 9 and 10).
+  
+   (#)  Send the selected Read command (refer to step 11).
+                    
+   (#) Use the SDIO flags/interrupts to check the transfer status.
+  
+ *** Write Operations ***
+ ========================
+ [..]
+   (#) First, user has to fill the data structure (pointer to
+       SDIO_DataInitTypeDef) according to the selected data type to be received.
+       The parameters that should be filled are:
+       (++) Data TimeOut
+       (++) Data Length
+       (++) Data Block size
+       (++) Data Transfer direction:  should be to card (To CARD)
+       (++) Data Transfer mode
+       (++) DPSM Status (Enable or Disable)
+  
+   (#) Configure the SDIO resources to send the data to the card according to 
+       selected transfer mode (Refer to Step 8, 9 and 10).
+                     
+   (#) Send the selected Write command (refer to step 11).
+                    
+   (#) Use the SDIO flags/interrupts to check the transfer status.
+  
+  
+@endverbatim
+  *
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_conf.h"
+#include "stm32f4xx_sdio.h"
+#include "stm32f4xx_rcc.h"
+
+/** @addtogroup STM32F4xx_StdPeriph_Driver
+  * @{
+  */
+
+/** @defgroup SDIO 
+  * @brief SDIO driver modules
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/* ------------ SDIO registers bit address in the alias region ----------- */
+#define SDIO_OFFSET                (SDIO_BASE - PERIPH_BASE)
+
+/* --- CLKCR Register ---*/
+/* Alias word address of CLKEN bit */
+#define CLKCR_OFFSET              (SDIO_OFFSET + 0x04)
+#define CLKEN_BitNumber           0x08
+#define CLKCR_CLKEN_BB            (PERIPH_BB_BASE + (CLKCR_OFFSET * 32) + (CLKEN_BitNumber * 4))
+
+/* --- CMD Register ---*/
+/* Alias word address of SDIOSUSPEND bit */
+#define CMD_OFFSET                (SDIO_OFFSET + 0x0C)
+#define SDIOSUSPEND_BitNumber     0x0B
+#define CMD_SDIOSUSPEND_BB        (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (SDIOSUSPEND_BitNumber * 4))
+
+/* Alias word address of ENCMDCOMPL bit */
+#define ENCMDCOMPL_BitNumber      0x0C
+#define CMD_ENCMDCOMPL_BB         (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (ENCMDCOMPL_BitNumber * 4))
+
+/* Alias word address of NIEN bit */
+#define NIEN_BitNumber            0x0D
+#define CMD_NIEN_BB               (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (NIEN_BitNumber * 4))
+
+/* Alias word address of ATACMD bit */
+#define ATACMD_BitNumber          0x0E
+#define CMD_ATACMD_BB             (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (ATACMD_BitNumber * 4))
+
+/* --- DCTRL Register ---*/
+/* Alias word address of DMAEN bit */
+#define DCTRL_OFFSET              (SDIO_OFFSET + 0x2C)
+#define DMAEN_BitNumber           0x03
+#define DCTRL_DMAEN_BB            (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (DMAEN_BitNumber * 4))
+
+/* Alias word address of RWSTART bit */
+#define RWSTART_BitNumber         0x08
+#define DCTRL_RWSTART_BB          (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWSTART_BitNumber * 4))
+
+/* Alias word address of RWSTOP bit */
+#define RWSTOP_BitNumber          0x09
+#define DCTRL_RWSTOP_BB           (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWSTOP_BitNumber * 4))
+
+/* Alias word address of RWMOD bit */
+#define RWMOD_BitNumber           0x0A
+#define DCTRL_RWMOD_BB            (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWMOD_BitNumber * 4))
+
+/* Alias word address of SDIOEN bit */
+#define SDIOEN_BitNumber          0x0B
+#define DCTRL_SDIOEN_BB           (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (SDIOEN_BitNumber * 4))
+
+/* ---------------------- SDIO registers bit mask ------------------------ */
+/* --- CLKCR Register ---*/
+/* CLKCR register clear mask */
+#define CLKCR_CLEAR_MASK         ((uint32_t)0xFFFF8100) 
+
+/* --- PWRCTRL Register ---*/
+/* SDIO PWRCTRL Mask */
+#define PWR_PWRCTRL_MASK         ((uint32_t)0xFFFFFFFC)
+
+/* --- DCTRL Register ---*/
+/* SDIO DCTRL Clear Mask */
+#define DCTRL_CLEAR_MASK         ((uint32_t)0xFFFFFF08)
+
+/* --- CMD Register ---*/
+/* CMD Register clear mask */
+#define CMD_CLEAR_MASK           ((uint32_t)0xFFFFF800)
+
+/* SDIO RESP Registers Address */
+#define SDIO_RESP_ADDR           ((uint32_t)(SDIO_BASE + 0x14))
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup SDIO_Private_Functions
+  * @{
+  */
+
+/** @defgroup SDIO_Group1 Initialization and Configuration functions
+ *  @brief   Initialization and Configuration functions 
+ *
+@verbatim   
+ ===============================================================================
+              ##### Initialization and Configuration functions #####
+ ===============================================================================
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Deinitializes the SDIO peripheral registers to their default reset values.
+  * @param  None
+  * @retval None
+  */
+void SDIO_DeInit(void)
+{
+  RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, ENABLE);
+  RCC_APB2PeriphResetCmd(RCC_APB2Periph_SDIO, DISABLE);
+}
+
+/**
+  * @brief  Initializes the SDIO peripheral according to the specified 
+  *         parameters in the SDIO_InitStruct.
+  * @param  SDIO_InitStruct : pointer to a SDIO_InitTypeDef structure 
+  *         that contains the configuration information for the SDIO peripheral.
+  * @retval None
+  */
+void SDIO_Init(SDIO_InitTypeDef* SDIO_InitStruct)
+{
+  uint32_t tmpreg = 0;
+    
+  /* Check the parameters */
+  assert_param(IS_SDIO_CLOCK_EDGE(SDIO_InitStruct->SDIO_ClockEdge));
+  assert_param(IS_SDIO_CLOCK_BYPASS(SDIO_InitStruct->SDIO_ClockBypass));
+  assert_param(IS_SDIO_CLOCK_POWER_SAVE(SDIO_InitStruct->SDIO_ClockPowerSave));
+  assert_param(IS_SDIO_BUS_WIDE(SDIO_InitStruct->SDIO_BusWide));
+  assert_param(IS_SDIO_HARDWARE_FLOW_CONTROL(SDIO_InitStruct->SDIO_HardwareFlowControl)); 
+   
+/*---------------------------- SDIO CLKCR Configuration ------------------------*/  
+  /* Get the SDIO CLKCR value */
+  tmpreg = SDIO->CLKCR;
+  
+  /* Clear CLKDIV, PWRSAV, BYPASS, WIDBUS, NEGEDGE, HWFC_EN bits */
+  tmpreg &= CLKCR_CLEAR_MASK;
+  
+  /* Set CLKDIV bits according to SDIO_ClockDiv value */
+  /* Set PWRSAV bit according to SDIO_ClockPowerSave value */
+  /* Set BYPASS bit according to SDIO_ClockBypass value */
+  /* Set WIDBUS bits according to SDIO_BusWide value */
+  /* Set NEGEDGE bits according to SDIO_ClockEdge value */
+  /* Set HWFC_EN bits according to SDIO_HardwareFlowControl value */
+  tmpreg |= (SDIO_InitStruct->SDIO_ClockDiv  | SDIO_InitStruct->SDIO_ClockPowerSave |
+             SDIO_InitStruct->SDIO_ClockBypass | SDIO_InitStruct->SDIO_BusWide |
+             SDIO_InitStruct->SDIO_ClockEdge | SDIO_InitStruct->SDIO_HardwareFlowControl); 
+  
+  /* Write to SDIO CLKCR */
+  SDIO->CLKCR = tmpreg;
+}
+
+/**
+  * @brief  Fills each SDIO_InitStruct member with its default value.
+  * @param  SDIO_InitStruct: pointer to an SDIO_InitTypeDef structure which 
+  *         will be initialized.
+  * @retval None
+  */
+void SDIO_StructInit(SDIO_InitTypeDef* SDIO_InitStruct)
+{
+  /* SDIO_InitStruct members default value */
+  SDIO_InitStruct->SDIO_ClockDiv = 0x00;
+  SDIO_InitStruct->SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+  SDIO_InitStruct->SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+  SDIO_InitStruct->SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+  SDIO_InitStruct->SDIO_BusWide = SDIO_BusWide_1b;
+  SDIO_InitStruct->SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+}
+
+/**
+  * @brief  Enables or disables the SDIO Clock.
+  * @param  NewState: new state of the SDIO Clock. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_ClockCmd(FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) CLKCR_CLKEN_BB = (uint32_t)NewState;
+}
+
+/**
+  * @brief  Sets the power status of the controller.
+  * @param  SDIO_PowerState: new state of the Power state. 
+  *          This parameter can be one of the following values:
+  *            @arg SDIO_PowerState_OFF: SDIO Power OFF
+  *            @arg SDIO_PowerState_ON: SDIO Power ON
+  * @retval None
+  */
+void SDIO_SetPowerState(uint32_t SDIO_PowerState)
+{
+  /* Check the parameters */
+  assert_param(IS_SDIO_POWER_STATE(SDIO_PowerState));
+  
+  SDIO->POWER = SDIO_PowerState;
+}
+
+/**
+  * @brief  Gets the power status of the controller.
+  * @param  None
+  * @retval Power status of the controller. The returned value can be one of the 
+  *         following values:
+  *            - 0x00: Power OFF
+  *            - 0x02: Power UP
+  *            - 0x03: Power ON 
+  */
+uint32_t SDIO_GetPowerState(void)
+{
+  return (SDIO->POWER & (~PWR_PWRCTRL_MASK));
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group2 Command path state machine (CPSM) management functions
+ *  @brief   Command path state machine (CPSM) management functions 
+ *
+@verbatim   
+ ===============================================================================
+        ##### Command path state machine (CPSM) management functions #####
+ ===============================================================================  
+
+  This section provide functions allowing to program and read the Command path 
+  state machine (CPSM).
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the SDIO Command according to the specified 
+  *         parameters in the SDIO_CmdInitStruct and send the command.
+  * @param  SDIO_CmdInitStruct : pointer to a SDIO_CmdInitTypeDef 
+  *         structure that contains the configuration information for the SDIO 
+  *         command.
+  * @retval None
+  */
+void SDIO_SendCommand(SDIO_CmdInitTypeDef *SDIO_CmdInitStruct)
+{
+  uint32_t tmpreg = 0;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_CMD_INDEX(SDIO_CmdInitStruct->SDIO_CmdIndex));
+  assert_param(IS_SDIO_RESPONSE(SDIO_CmdInitStruct->SDIO_Response));
+  assert_param(IS_SDIO_WAIT(SDIO_CmdInitStruct->SDIO_Wait));
+  assert_param(IS_SDIO_CPSM(SDIO_CmdInitStruct->SDIO_CPSM));
+  
+/*---------------------------- SDIO ARG Configuration ------------------------*/
+  /* Set the SDIO Argument value */
+  SDIO->ARG = SDIO_CmdInitStruct->SDIO_Argument;
+  
+/*---------------------------- SDIO CMD Configuration ------------------------*/  
+  /* Get the SDIO CMD value */
+  tmpreg = SDIO->CMD;
+  /* Clear CMDINDEX, WAITRESP, WAITINT, WAITPEND, CPSMEN bits */
+  tmpreg &= CMD_CLEAR_MASK;
+  /* Set CMDINDEX bits according to SDIO_CmdIndex value */
+  /* Set WAITRESP bits according to SDIO_Response value */
+  /* Set WAITINT and WAITPEND bits according to SDIO_Wait value */
+  /* Set CPSMEN bits according to SDIO_CPSM value */
+  tmpreg |= (uint32_t)SDIO_CmdInitStruct->SDIO_CmdIndex | SDIO_CmdInitStruct->SDIO_Response
+           | SDIO_CmdInitStruct->SDIO_Wait | SDIO_CmdInitStruct->SDIO_CPSM;
+  
+  /* Write to SDIO CMD */
+  SDIO->CMD = tmpreg;
+}
+
+/**
+  * @brief  Fills each SDIO_CmdInitStruct member with its default value.
+  * @param  SDIO_CmdInitStruct: pointer to an SDIO_CmdInitTypeDef 
+  *         structure which will be initialized.
+  * @retval None
+  */
+void SDIO_CmdStructInit(SDIO_CmdInitTypeDef* SDIO_CmdInitStruct)
+{
+  /* SDIO_CmdInitStruct members default value */
+  SDIO_CmdInitStruct->SDIO_Argument = 0x00;
+  SDIO_CmdInitStruct->SDIO_CmdIndex = 0x00;
+  SDIO_CmdInitStruct->SDIO_Response = SDIO_Response_No;
+  SDIO_CmdInitStruct->SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStruct->SDIO_CPSM = SDIO_CPSM_Disable;
+}
+
+/**
+  * @brief  Returns command index of last command for which response received.
+  * @param  None
+  * @retval Returns the command index of the last command response received.
+  */
+uint8_t SDIO_GetCommandResponse(void)
+{
+  return (uint8_t)(SDIO->RESPCMD);
+}
+
+/**
+  * @brief  Returns response received from the card for the last command.
+  * @param  SDIO_RESP: Specifies the SDIO response register. 
+  *          This parameter can be one of the following values:
+  *            @arg SDIO_RESP1: Response Register 1
+  *            @arg SDIO_RESP2: Response Register 2
+  *            @arg SDIO_RESP3: Response Register 3
+  *            @arg SDIO_RESP4: Response Register 4
+  * @retval The Corresponding response register value.
+  */
+uint32_t SDIO_GetResponse(uint32_t SDIO_RESP)
+{
+  __IO uint32_t tmp = 0;
+
+  /* Check the parameters */
+  assert_param(IS_SDIO_RESP(SDIO_RESP));
+
+  tmp = SDIO_RESP_ADDR + SDIO_RESP;
+  
+  return (*(__IO uint32_t *) tmp); 
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group3 Data path state machine (DPSM) management functions
+ *  @brief   Data path state machine (DPSM) management functions
+ *
+@verbatim   
+ ===============================================================================
+         ##### Data path state machine (DPSM) management functions #####
+ ===============================================================================  
+
+  This section provide functions allowing to program and read the Data path 
+  state machine (DPSM).
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the SDIO data path according to the specified 
+  *         parameters in the SDIO_DataInitStruct.
+  * @param  SDIO_DataInitStruct : pointer to a SDIO_DataInitTypeDef structure 
+  *         that contains the configuration information for the SDIO command.
+  * @retval None
+  */
+void SDIO_DataConfig(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
+{
+  uint32_t tmpreg = 0;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_DATA_LENGTH(SDIO_DataInitStruct->SDIO_DataLength));
+  assert_param(IS_SDIO_BLOCK_SIZE(SDIO_DataInitStruct->SDIO_DataBlockSize));
+  assert_param(IS_SDIO_TRANSFER_DIR(SDIO_DataInitStruct->SDIO_TransferDir));
+  assert_param(IS_SDIO_TRANSFER_MODE(SDIO_DataInitStruct->SDIO_TransferMode));
+  assert_param(IS_SDIO_DPSM(SDIO_DataInitStruct->SDIO_DPSM));
+
+/*---------------------------- SDIO DTIMER Configuration ---------------------*/
+  /* Set the SDIO Data TimeOut value */
+  SDIO->DTIMER = SDIO_DataInitStruct->SDIO_DataTimeOut;
+
+/*---------------------------- SDIO DLEN Configuration -----------------------*/
+  /* Set the SDIO DataLength value */
+  SDIO->DLEN = SDIO_DataInitStruct->SDIO_DataLength;
+
+/*---------------------------- SDIO DCTRL Configuration ----------------------*/  
+  /* Get the SDIO DCTRL value */
+  tmpreg = SDIO->DCTRL;
+  /* Clear DEN, DTMODE, DTDIR and DBCKSIZE bits */
+  tmpreg &= DCTRL_CLEAR_MASK;
+  /* Set DEN bit according to SDIO_DPSM value */
+  /* Set DTMODE bit according to SDIO_TransferMode value */
+  /* Set DTDIR bit according to SDIO_TransferDir value */
+  /* Set DBCKSIZE bits according to SDIO_DataBlockSize value */
+  tmpreg |= (uint32_t)SDIO_DataInitStruct->SDIO_DataBlockSize | SDIO_DataInitStruct->SDIO_TransferDir
+           | SDIO_DataInitStruct->SDIO_TransferMode | SDIO_DataInitStruct->SDIO_DPSM;
+
+  /* Write to SDIO DCTRL */
+  SDIO->DCTRL = tmpreg;
+}
+
+/**
+  * @brief  Fills each SDIO_DataInitStruct member with its default value.
+  * @param  SDIO_DataInitStruct: pointer to an SDIO_DataInitTypeDef structure 
+  *         which will be initialized.
+  * @retval None
+  */
+void SDIO_DataStructInit(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
+{
+  /* SDIO_DataInitStruct members default value */
+  SDIO_DataInitStruct->SDIO_DataTimeOut = 0xFFFFFFFF;
+  SDIO_DataInitStruct->SDIO_DataLength = 0x00;
+  SDIO_DataInitStruct->SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+  SDIO_DataInitStruct->SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStruct->SDIO_TransferMode = SDIO_TransferMode_Block;  
+  SDIO_DataInitStruct->SDIO_DPSM = SDIO_DPSM_Disable;
+}
+
+/**
+  * @brief  Returns number of remaining data bytes to be transferred.
+  * @param  None
+  * @retval Number of remaining data bytes to be transferred
+  */
+uint32_t SDIO_GetDataCounter(void)
+{ 
+  return SDIO->DCOUNT;
+}
+
+/**
+  * @brief  Read one data word from Rx FIFO.
+  * @param  None
+  * @retval Data received
+  */
+uint32_t SDIO_ReadData(void)
+{ 
+  return SDIO->FIFO;
+}
+
+/**
+  * @brief  Write one data word to Tx FIFO.
+  * @param  Data: 32-bit data word to write.
+  * @retval None
+  */
+void SDIO_WriteData(uint32_t Data)
+{ 
+  SDIO->FIFO = Data;
+}
+
+/**
+  * @brief  Returns the number of words left to be written to or read from FIFO.	
+  * @param  None
+  * @retval Remaining number of words.
+  */
+uint32_t SDIO_GetFIFOCount(void)
+{ 
+  return SDIO->FIFOCNT;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group4 SDIO IO Cards mode management functions
+ *  @brief   SDIO IO Cards mode management functions
+ *
+@verbatim   
+ ===============================================================================
+               ##### SDIO IO Cards mode management functions #####
+ ===============================================================================  
+
+  This section provide functions allowing to program and read the SDIO IO Cards.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Starts the SD I/O Read Wait operation.	
+  * @param  NewState: new state of the Start SDIO Read Wait operation. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_StartSDIOReadWait(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) DCTRL_RWSTART_BB = (uint32_t) NewState;
+}
+
+/**
+  * @brief  Stops the SD I/O Read Wait operation.	
+  * @param  NewState: new state of the Stop SDIO Read Wait operation. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_StopSDIOReadWait(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) DCTRL_RWSTOP_BB = (uint32_t) NewState;
+}
+
+/**
+  * @brief  Sets one of the two options of inserting read wait interval.
+  * @param  SDIO_ReadWaitMode: SD I/O Read Wait operation mode.
+  *          This parameter can be:
+  *            @arg SDIO_ReadWaitMode_CLK: Read Wait control by stopping SDIOCLK
+  *            @arg SDIO_ReadWaitMode_DATA2: Read Wait control using SDIO_DATA2
+  * @retval None
+  */
+void SDIO_SetSDIOReadWaitMode(uint32_t SDIO_ReadWaitMode)
+{
+  /* Check the parameters */
+  assert_param(IS_SDIO_READWAIT_MODE(SDIO_ReadWaitMode));
+  
+  *(__IO uint32_t *) DCTRL_RWMOD_BB = SDIO_ReadWaitMode;
+}
+
+/**
+  * @brief  Enables or disables the SD I/O Mode Operation.
+  * @param  NewState: new state of SDIO specific operation. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_SetSDIOOperation(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) DCTRL_SDIOEN_BB = (uint32_t)NewState;
+}
+
+/**
+  * @brief  Enables or disables the SD I/O Mode suspend command sending.
+  * @param  NewState: new state of the SD I/O Mode suspend command.
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_SendSDIOSuspendCmd(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) CMD_SDIOSUSPEND_BB = (uint32_t)NewState;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group5 CE-ATA mode management functions
+ *  @brief   CE-ATA mode management functions
+ *
+@verbatim   
+ ===============================================================================
+                  ##### CE-ATA mode management functions #####
+ ===============================================================================  
+
+  This section provide functions allowing to program and read the CE-ATA card.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables or disables the command completion signal.
+  * @param  NewState: new state of command completion signal. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_CommandCompletionCmd(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) CMD_ENCMDCOMPL_BB = (uint32_t)NewState;
+}
+
+/**
+  * @brief  Enables or disables the CE-ATA interrupt.
+  * @param  NewState: new state of CE-ATA interrupt. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_CEATAITCmd(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) CMD_NIEN_BB = (uint32_t)((~((uint32_t)NewState)) & ((uint32_t)0x1));
+}
+
+/**
+  * @brief  Sends CE-ATA command (CMD61).
+  * @param  NewState: new state of CE-ATA command. 
+  *         This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_SendCEATACmd(FunctionalState NewState)
+{ 
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) CMD_ATACMD_BB = (uint32_t)NewState;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group6 DMA transfers management functions
+ *  @brief   DMA transfers management functions
+ *
+@verbatim   
+ ===============================================================================
+                  ##### DMA transfers management functions #####
+ ===============================================================================  
+
+  This section provide functions allowing to program SDIO DMA transfer.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables or disables the SDIO DMA request.
+  * @param  NewState: new state of the selected SDIO DMA request.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void SDIO_DMACmd(FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  *(__IO uint32_t *) DCTRL_DMAEN_BB = (uint32_t)NewState;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Group7 Interrupts and flags management functions
+ *  @brief   Interrupts and flags management functions  
+ *
+@verbatim   
+ ===============================================================================
+              ##### Interrupts and flags management functions #####
+ ===============================================================================  
+
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables or disables the SDIO interrupts.
+  * @param  SDIO_IT: specifies the SDIO interrupt sources to be enabled or disabled.
+  *          This parameter can be one or a combination of the following values:
+  *            @arg SDIO_IT_CCRCFAIL: Command response received (CRC check failed) interrupt
+  *            @arg SDIO_IT_DCRCFAIL: Data block sent/received (CRC check failed) interrupt
+  *            @arg SDIO_IT_CTIMEOUT: Command response timeout interrupt
+  *            @arg SDIO_IT_DTIMEOUT: Data timeout interrupt
+  *            @arg SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt
+  *            @arg SDIO_IT_RXOVERR:  Received FIFO overrun error interrupt
+  *            @arg SDIO_IT_CMDREND:  Command response received (CRC check passed) interrupt
+  *            @arg SDIO_IT_CMDSENT:  Command sent (no response required) interrupt
+  *            @arg SDIO_IT_DATAEND:  Data end (data counter, SDIDCOUNT, is zero) interrupt
+  *            @arg SDIO_IT_STBITERR: Start bit not detected on all data signals in wide 
+  *                                   bus mode interrupt
+  *            @arg SDIO_IT_DBCKEND:  Data block sent/received (CRC check passed) interrupt
+  *            @arg SDIO_IT_CMDACT:   Command transfer in progress interrupt
+  *            @arg SDIO_IT_TXACT:    Data transmit in progress interrupt
+  *            @arg SDIO_IT_RXACT:    Data receive in progress interrupt
+  *            @arg SDIO_IT_TXFIFOHE: Transmit FIFO Half Empty interrupt
+  *            @arg SDIO_IT_RXFIFOHF: Receive FIFO Half Full interrupt
+  *            @arg SDIO_IT_TXFIFOF:  Transmit FIFO full interrupt
+  *            @arg SDIO_IT_RXFIFOF:  Receive FIFO full interrupt
+  *            @arg SDIO_IT_TXFIFOE:  Transmit FIFO empty interrupt
+  *            @arg SDIO_IT_RXFIFOE:  Receive FIFO empty interrupt
+  *            @arg SDIO_IT_TXDAVL:   Data available in transmit FIFO interrupt
+  *            @arg SDIO_IT_RXDAVL:   Data available in receive FIFO interrupt
+  *            @arg SDIO_IT_SDIOIT:   SD I/O interrupt received interrupt
+  *            @arg SDIO_IT_CEATAEND: CE-ATA command completion signal received for CMD61 interrupt
+  * @param  NewState: new state of the specified SDIO interrupts.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None 
+  */
+void SDIO_ITConfig(uint32_t SDIO_IT, FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_SDIO_IT(SDIO_IT));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  if (NewState != DISABLE)
+  {
+    /* Enable the SDIO interrupts */
+    SDIO->MASK |= SDIO_IT;
+  }
+  else
+  {
+    /* Disable the SDIO interrupts */
+    SDIO->MASK &= ~SDIO_IT;
+  } 
+}
+
+/**
+  * @brief  Checks whether the specified SDIO flag is set or not.
+  * @param  SDIO_FLAG: specifies the flag to check. 
+  *          This parameter can be one of the following values:
+  *            @arg SDIO_FLAG_CCRCFAIL: Command response received (CRC check failed)
+  *            @arg SDIO_FLAG_DCRCFAIL: Data block sent/received (CRC check failed)
+  *            @arg SDIO_FLAG_CTIMEOUT: Command response timeout
+  *            @arg SDIO_FLAG_DTIMEOUT: Data timeout
+  *            @arg SDIO_FLAG_TXUNDERR: Transmit FIFO underrun error
+  *            @arg SDIO_FLAG_RXOVERR:  Received FIFO overrun error
+  *            @arg SDIO_FLAG_CMDREND:  Command response received (CRC check passed)
+  *            @arg SDIO_FLAG_CMDSENT:  Command sent (no response required)
+  *            @arg SDIO_FLAG_DATAEND:  Data end (data counter, SDIDCOUNT, is zero)
+  *            @arg SDIO_FLAG_STBITERR: Start bit not detected on all data signals in wide bus mode.
+  *            @arg SDIO_FLAG_DBCKEND:  Data block sent/received (CRC check passed)
+  *            @arg SDIO_FLAG_CMDACT:   Command transfer in progress
+  *            @arg SDIO_FLAG_TXACT:    Data transmit in progress
+  *            @arg SDIO_FLAG_RXACT:    Data receive in progress
+  *            @arg SDIO_FLAG_TXFIFOHE: Transmit FIFO Half Empty
+  *            @arg SDIO_FLAG_RXFIFOHF: Receive FIFO Half Full
+  *            @arg SDIO_FLAG_TXFIFOF:  Transmit FIFO full
+  *            @arg SDIO_FLAG_RXFIFOF:  Receive FIFO full
+  *            @arg SDIO_FLAG_TXFIFOE:  Transmit FIFO empty
+  *            @arg SDIO_FLAG_RXFIFOE:  Receive FIFO empty
+  *            @arg SDIO_FLAG_TXDAVL:   Data available in transmit FIFO
+  *            @arg SDIO_FLAG_RXDAVL:   Data available in receive FIFO
+  *            @arg SDIO_FLAG_SDIOIT:   SD I/O interrupt received
+  *            @arg SDIO_FLAG_CEATAEND: CE-ATA command completion signal received for CMD61
+  * @retval The new state of SDIO_FLAG (SET or RESET).
+  */
+FlagStatus SDIO_GetFlagStatus(uint32_t SDIO_FLAG)
+{ 
+  FlagStatus bitstatus = RESET;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_FLAG(SDIO_FLAG));
+  
+  if ((SDIO->STA & SDIO_FLAG) != (uint32_t)RESET)
+  {
+    bitstatus = SET;
+  }
+  else
+  {
+    bitstatus = RESET;
+  }
+  return bitstatus;
+}
+
+/**
+  * @brief  Clears the SDIO's pending flags.
+  * @param  SDIO_FLAG: specifies the flag to clear.  
+  *          This parameter can be one or a combination of the following values:
+  *            @arg SDIO_FLAG_CCRCFAIL: Command response received (CRC check failed)
+  *            @arg SDIO_FLAG_DCRCFAIL: Data block sent/received (CRC check failed)
+  *            @arg SDIO_FLAG_CTIMEOUT: Command response timeout
+  *            @arg SDIO_FLAG_DTIMEOUT: Data timeout
+  *            @arg SDIO_FLAG_TXUNDERR: Transmit FIFO underrun error
+  *            @arg SDIO_FLAG_RXOVERR:  Received FIFO overrun error
+  *            @arg SDIO_FLAG_CMDREND:  Command response received (CRC check passed)
+  *            @arg SDIO_FLAG_CMDSENT:  Command sent (no response required)
+  *            @arg SDIO_FLAG_DATAEND:  Data end (data counter, SDIDCOUNT, is zero)
+  *            @arg SDIO_FLAG_STBITERR: Start bit not detected on all data signals in wide bus mode
+  *            @arg SDIO_FLAG_DBCKEND:  Data block sent/received (CRC check passed)
+  *            @arg SDIO_FLAG_SDIOIT:   SD I/O interrupt received
+  *            @arg SDIO_FLAG_CEATAEND: CE-ATA command completion signal received for CMD61
+  * @retval None
+  */
+void SDIO_ClearFlag(uint32_t SDIO_FLAG)
+{ 
+  /* Check the parameters */
+  assert_param(IS_SDIO_CLEAR_FLAG(SDIO_FLAG));
+   
+  SDIO->ICR = SDIO_FLAG;
+}
+
+/**
+  * @brief  Checks whether the specified SDIO interrupt has occurred or not.
+  * @param  SDIO_IT: specifies the SDIO interrupt source to check. 
+  *          This parameter can be one of the following values:
+  *            @arg SDIO_IT_CCRCFAIL: Command response received (CRC check failed) interrupt
+  *            @arg SDIO_IT_DCRCFAIL: Data block sent/received (CRC check failed) interrupt
+  *            @arg SDIO_IT_CTIMEOUT: Command response timeout interrupt
+  *            @arg SDIO_IT_DTIMEOUT: Data timeout interrupt
+  *            @arg SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt
+  *            @arg SDIO_IT_RXOVERR:  Received FIFO overrun error interrupt
+  *            @arg SDIO_IT_CMDREND:  Command response received (CRC check passed) interrupt
+  *            @arg SDIO_IT_CMDSENT:  Command sent (no response required) interrupt
+  *            @arg SDIO_IT_DATAEND:  Data end (data counter, SDIDCOUNT, is zero) interrupt
+  *            @arg SDIO_IT_STBITERR: Start bit not detected on all data signals in wide 
+  *                                   bus mode interrupt
+  *            @arg SDIO_IT_DBCKEND:  Data block sent/received (CRC check passed) interrupt
+  *            @arg SDIO_IT_CMDACT:   Command transfer in progress interrupt
+  *            @arg SDIO_IT_TXACT:    Data transmit in progress interrupt
+  *            @arg SDIO_IT_RXACT:    Data receive in progress interrupt
+  *            @arg SDIO_IT_TXFIFOHE: Transmit FIFO Half Empty interrupt
+  *            @arg SDIO_IT_RXFIFOHF: Receive FIFO Half Full interrupt
+  *            @arg SDIO_IT_TXFIFOF:  Transmit FIFO full interrupt
+  *            @arg SDIO_IT_RXFIFOF:  Receive FIFO full interrupt
+  *            @arg SDIO_IT_TXFIFOE:  Transmit FIFO empty interrupt
+  *            @arg SDIO_IT_RXFIFOE:  Receive FIFO empty interrupt
+  *            @arg SDIO_IT_TXDAVL:   Data available in transmit FIFO interrupt
+  *            @arg SDIO_IT_RXDAVL:   Data available in receive FIFO interrupt
+  *            @arg SDIO_IT_SDIOIT:   SD I/O interrupt received interrupt
+  *            @arg SDIO_IT_CEATAEND: CE-ATA command completion signal received for CMD61 interrupt
+  * @retval The new state of SDIO_IT (SET or RESET).
+  */
+ITStatus SDIO_GetITStatus(uint32_t SDIO_IT)
+{ 
+  ITStatus bitstatus = RESET;
+  
+  /* Check the parameters */
+  assert_param(IS_SDIO_GET_IT(SDIO_IT));
+  if ((SDIO->STA & SDIO_IT) != (uint32_t)RESET)  
+  {
+    bitstatus = SET;
+  }
+  else
+  {
+    bitstatus = RESET;
+  }
+  return bitstatus;
+}
+
+/**
+  * @brief  Clears the SDIO's interrupt pending bits.
+  * @param  SDIO_IT: specifies the interrupt pending bit to clear. 
+  *          This parameter can be one or a combination of the following values:
+  *            @arg SDIO_IT_CCRCFAIL: Command response received (CRC check failed) interrupt
+  *            @arg SDIO_IT_DCRCFAIL: Data block sent/received (CRC check failed) interrupt
+  *            @arg SDIO_IT_CTIMEOUT: Command response timeout interrupt
+  *            @arg SDIO_IT_DTIMEOUT: Data timeout interrupt
+  *            @arg SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt
+  *            @arg SDIO_IT_RXOVERR:  Received FIFO overrun error interrupt
+  *            @arg SDIO_IT_CMDREND:  Command response received (CRC check passed) interrupt
+  *            @arg SDIO_IT_CMDSENT:  Command sent (no response required) interrupt
+  *            @arg SDIO_IT_DATAEND:  Data end (data counter, SDIO_DCOUNT, is zero) interrupt
+  *            @arg SDIO_IT_STBITERR: Start bit not detected on all data signals in wide 
+  *                                   bus mode interrupt
+  *            @arg SDIO_IT_SDIOIT:   SD I/O interrupt received interrupt
+  *            @arg SDIO_IT_CEATAEND: CE-ATA command completion signal received for CMD61
+  * @retval None
+  */
+void SDIO_ClearITPendingBit(uint32_t SDIO_IT)
+{ 
+  /* Check the parameters */
+  assert_param(IS_SDIO_CLEAR_IT(SDIO_IT));
+   
+  SDIO->ICR = SDIO_IT;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/lib/stm32f4xx_sdio.h b/stm/lib/stm32f4xx_sdio.h
new file mode 100644
index 0000000000000000000000000000000000000000..0765a09cc9f4ca909b294ce9b2a917e328f2a9e4
--- /dev/null
+++ b/stm/lib/stm32f4xx_sdio.h
@@ -0,0 +1,536 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_sdio.h
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    11-January-2013
+  * @brief   This file contains all the functions prototypes for the SDIO firmware
+  *          library.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_SDIO_H
+#define __STM32F4xx_SDIO_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx.h"
+
+/** @addtogroup STM32F4xx_StdPeriph_Driver
+  * @{
+  */
+
+/** @addtogroup SDIO
+  * @{
+  */
+
+/* Exported types ------------------------------------------------------------*/
+
+typedef struct
+{
+  uint32_t SDIO_ClockEdge;            /*!< Specifies the clock transition on which the bit capture is made.
+                                           This parameter can be a value of @ref SDIO_Clock_Edge */
+
+  uint32_t SDIO_ClockBypass;          /*!< Specifies whether the SDIO Clock divider bypass is
+                                           enabled or disabled.
+                                           This parameter can be a value of @ref SDIO_Clock_Bypass */
+
+  uint32_t SDIO_ClockPowerSave;       /*!< Specifies whether SDIO Clock output is enabled or
+                                           disabled when the bus is idle.
+                                           This parameter can be a value of @ref SDIO_Clock_Power_Save */
+
+  uint32_t SDIO_BusWide;              /*!< Specifies the SDIO bus width.
+                                           This parameter can be a value of @ref SDIO_Bus_Wide */
+
+  uint32_t SDIO_HardwareFlowControl;  /*!< Specifies whether the SDIO hardware flow control is enabled or disabled.
+                                           This parameter can be a value of @ref SDIO_Hardware_Flow_Control */
+
+  uint8_t SDIO_ClockDiv;              /*!< Specifies the clock frequency of the SDIO controller.
+                                           This parameter can be a value between 0x00 and 0xFF. */
+                                           
+} SDIO_InitTypeDef;
+
+typedef struct
+{
+  uint32_t SDIO_Argument;  /*!< Specifies the SDIO command argument which is sent
+                                to a card as part of a command message. If a command
+                                contains an argument, it must be loaded into this register
+                                before writing the command to the command register */
+
+  uint32_t SDIO_CmdIndex;  /*!< Specifies the SDIO command index. It must be lower than 0x40. */
+
+  uint32_t SDIO_Response;  /*!< Specifies the SDIO response type.
+                                This parameter can be a value of @ref SDIO_Response_Type */
+
+  uint32_t SDIO_Wait;      /*!< Specifies whether SDIO wait for interrupt request is enabled or disabled.
+                                This parameter can be a value of @ref SDIO_Wait_Interrupt_State */
+
+  uint32_t SDIO_CPSM;      /*!< Specifies whether SDIO Command path state machine (CPSM)
+                                is enabled or disabled.
+                                This parameter can be a value of @ref SDIO_CPSM_State */
+} SDIO_CmdInitTypeDef;
+
+typedef struct
+{
+  uint32_t SDIO_DataTimeOut;    /*!< Specifies the data timeout period in card bus clock periods. */
+
+  uint32_t SDIO_DataLength;     /*!< Specifies the number of data bytes to be transferred. */
+ 
+  uint32_t SDIO_DataBlockSize;  /*!< Specifies the data block size for block transfer.
+                                     This parameter can be a value of @ref SDIO_Data_Block_Size */
+ 
+  uint32_t SDIO_TransferDir;    /*!< Specifies the data transfer direction, whether the transfer
+                                     is a read or write.
+                                     This parameter can be a value of @ref SDIO_Transfer_Direction */
+ 
+  uint32_t SDIO_TransferMode;   /*!< Specifies whether data transfer is in stream or block mode.
+                                     This parameter can be a value of @ref SDIO_Transfer_Type */
+ 
+  uint32_t SDIO_DPSM;           /*!< Specifies whether SDIO Data path state machine (DPSM)
+                                     is enabled or disabled.
+                                     This parameter can be a value of @ref SDIO_DPSM_State */
+} SDIO_DataInitTypeDef;
+
+
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup SDIO_Exported_Constants
+  * @{
+  */
+
+/** @defgroup SDIO_Clock_Edge 
+  * @{
+  */
+
+#define SDIO_ClockEdge_Rising               ((uint32_t)0x00000000)
+#define SDIO_ClockEdge_Falling              ((uint32_t)0x00002000)
+#define IS_SDIO_CLOCK_EDGE(EDGE) (((EDGE) == SDIO_ClockEdge_Rising) || \
+                                  ((EDGE) == SDIO_ClockEdge_Falling))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Clock_Bypass 
+  * @{
+  */
+
+#define SDIO_ClockBypass_Disable             ((uint32_t)0x00000000)
+#define SDIO_ClockBypass_Enable              ((uint32_t)0x00000400)    
+#define IS_SDIO_CLOCK_BYPASS(BYPASS) (((BYPASS) == SDIO_ClockBypass_Disable) || \
+                                     ((BYPASS) == SDIO_ClockBypass_Enable))
+/**
+  * @}
+  */ 
+
+/** @defgroup SDIO_Clock_Power_Save 
+  * @{
+  */
+
+#define SDIO_ClockPowerSave_Disable         ((uint32_t)0x00000000)
+#define SDIO_ClockPowerSave_Enable          ((uint32_t)0x00000200) 
+#define IS_SDIO_CLOCK_POWER_SAVE(SAVE) (((SAVE) == SDIO_ClockPowerSave_Disable) || \
+                                        ((SAVE) == SDIO_ClockPowerSave_Enable))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Bus_Wide 
+  * @{
+  */
+
+#define SDIO_BusWide_1b                     ((uint32_t)0x00000000)
+#define SDIO_BusWide_4b                     ((uint32_t)0x00000800)
+#define SDIO_BusWide_8b                     ((uint32_t)0x00001000)
+#define IS_SDIO_BUS_WIDE(WIDE) (((WIDE) == SDIO_BusWide_1b) || ((WIDE) == SDIO_BusWide_4b) || \
+                                ((WIDE) == SDIO_BusWide_8b))
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Hardware_Flow_Control 
+  * @{
+  */
+
+#define SDIO_HardwareFlowControl_Disable    ((uint32_t)0x00000000)
+#define SDIO_HardwareFlowControl_Enable     ((uint32_t)0x00004000)
+#define IS_SDIO_HARDWARE_FLOW_CONTROL(CONTROL) (((CONTROL) == SDIO_HardwareFlowControl_Disable) || \
+                                                ((CONTROL) == SDIO_HardwareFlowControl_Enable))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Power_State 
+  * @{
+  */
+
+#define SDIO_PowerState_OFF                 ((uint32_t)0x00000000)
+#define SDIO_PowerState_ON                  ((uint32_t)0x00000003)
+#define IS_SDIO_POWER_STATE(STATE) (((STATE) == SDIO_PowerState_OFF) || ((STATE) == SDIO_PowerState_ON))
+/**
+  * @}
+  */ 
+
+
+/** @defgroup SDIO_Interrupt_sources
+  * @{
+  */
+
+#define SDIO_IT_CCRCFAIL                    ((uint32_t)0x00000001)
+#define SDIO_IT_DCRCFAIL                    ((uint32_t)0x00000002)
+#define SDIO_IT_CTIMEOUT                    ((uint32_t)0x00000004)
+#define SDIO_IT_DTIMEOUT                    ((uint32_t)0x00000008)
+#define SDIO_IT_TXUNDERR                    ((uint32_t)0x00000010)
+#define SDIO_IT_RXOVERR                     ((uint32_t)0x00000020)
+#define SDIO_IT_CMDREND                     ((uint32_t)0x00000040)
+#define SDIO_IT_CMDSENT                     ((uint32_t)0x00000080)
+#define SDIO_IT_DATAEND                     ((uint32_t)0x00000100)
+#define SDIO_IT_STBITERR                    ((uint32_t)0x00000200)
+#define SDIO_IT_DBCKEND                     ((uint32_t)0x00000400)
+#define SDIO_IT_CMDACT                      ((uint32_t)0x00000800)
+#define SDIO_IT_TXACT                       ((uint32_t)0x00001000)
+#define SDIO_IT_RXACT                       ((uint32_t)0x00002000)
+#define SDIO_IT_TXFIFOHE                    ((uint32_t)0x00004000)
+#define SDIO_IT_RXFIFOHF                    ((uint32_t)0x00008000)
+#define SDIO_IT_TXFIFOF                     ((uint32_t)0x00010000)
+#define SDIO_IT_RXFIFOF                     ((uint32_t)0x00020000)
+#define SDIO_IT_TXFIFOE                     ((uint32_t)0x00040000)
+#define SDIO_IT_RXFIFOE                     ((uint32_t)0x00080000)
+#define SDIO_IT_TXDAVL                      ((uint32_t)0x00100000)
+#define SDIO_IT_RXDAVL                      ((uint32_t)0x00200000)
+#define SDIO_IT_SDIOIT                      ((uint32_t)0x00400000)
+#define SDIO_IT_CEATAEND                    ((uint32_t)0x00800000)
+#define IS_SDIO_IT(IT) ((((IT) & (uint32_t)0xFF000000) == 0x00) && ((IT) != (uint32_t)0x00))
+/**
+  * @}
+  */ 
+
+/** @defgroup SDIO_Command_Index
+  * @{
+  */
+
+#define IS_SDIO_CMD_INDEX(INDEX)            ((INDEX) < 0x40)
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Response_Type
+  * @{
+  */
+
+#define SDIO_Response_No                    ((uint32_t)0x00000000)
+#define SDIO_Response_Short                 ((uint32_t)0x00000040)
+#define SDIO_Response_Long                  ((uint32_t)0x000000C0)
+#define IS_SDIO_RESPONSE(RESPONSE) (((RESPONSE) == SDIO_Response_No) || \
+                                    ((RESPONSE) == SDIO_Response_Short) || \
+                                    ((RESPONSE) == SDIO_Response_Long))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Wait_Interrupt_State
+  * @{
+  */
+
+#define SDIO_Wait_No                        ((uint32_t)0x00000000) /*!< SDIO No Wait, TimeOut is enabled */
+#define SDIO_Wait_IT                        ((uint32_t)0x00000100) /*!< SDIO Wait Interrupt Request */
+#define SDIO_Wait_Pend                      ((uint32_t)0x00000200) /*!< SDIO Wait End of transfer */
+#define IS_SDIO_WAIT(WAIT) (((WAIT) == SDIO_Wait_No) || ((WAIT) == SDIO_Wait_IT) || \
+                            ((WAIT) == SDIO_Wait_Pend))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_CPSM_State
+  * @{
+  */
+
+#define SDIO_CPSM_Disable                    ((uint32_t)0x00000000)
+#define SDIO_CPSM_Enable                     ((uint32_t)0x00000400)
+#define IS_SDIO_CPSM(CPSM) (((CPSM) == SDIO_CPSM_Enable) || ((CPSM) == SDIO_CPSM_Disable))
+/**
+  * @}
+  */ 
+
+/** @defgroup SDIO_Response_Registers
+  * @{
+  */
+
+#define SDIO_RESP1                          ((uint32_t)0x00000000)
+#define SDIO_RESP2                          ((uint32_t)0x00000004)
+#define SDIO_RESP3                          ((uint32_t)0x00000008)
+#define SDIO_RESP4                          ((uint32_t)0x0000000C)
+#define IS_SDIO_RESP(RESP) (((RESP) == SDIO_RESP1) || ((RESP) == SDIO_RESP2) || \
+                            ((RESP) == SDIO_RESP3) || ((RESP) == SDIO_RESP4))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Data_Length 
+  * @{
+  */
+
+#define IS_SDIO_DATA_LENGTH(LENGTH) ((LENGTH) <= 0x01FFFFFF)
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Data_Block_Size 
+  * @{
+  */
+
+#define SDIO_DataBlockSize_1b               ((uint32_t)0x00000000)
+#define SDIO_DataBlockSize_2b               ((uint32_t)0x00000010)
+#define SDIO_DataBlockSize_4b               ((uint32_t)0x00000020)
+#define SDIO_DataBlockSize_8b               ((uint32_t)0x00000030)
+#define SDIO_DataBlockSize_16b              ((uint32_t)0x00000040)
+#define SDIO_DataBlockSize_32b              ((uint32_t)0x00000050)
+#define SDIO_DataBlockSize_64b              ((uint32_t)0x00000060)
+#define SDIO_DataBlockSize_128b             ((uint32_t)0x00000070)
+#define SDIO_DataBlockSize_256b             ((uint32_t)0x00000080)
+#define SDIO_DataBlockSize_512b             ((uint32_t)0x00000090)
+#define SDIO_DataBlockSize_1024b            ((uint32_t)0x000000A0)
+#define SDIO_DataBlockSize_2048b            ((uint32_t)0x000000B0)
+#define SDIO_DataBlockSize_4096b            ((uint32_t)0x000000C0)
+#define SDIO_DataBlockSize_8192b            ((uint32_t)0x000000D0)
+#define SDIO_DataBlockSize_16384b           ((uint32_t)0x000000E0)
+#define IS_SDIO_BLOCK_SIZE(SIZE) (((SIZE) == SDIO_DataBlockSize_1b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_2b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_4b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_8b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_16b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_32b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_64b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_128b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_256b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_512b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_1024b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_2048b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_4096b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_8192b) || \
+                                  ((SIZE) == SDIO_DataBlockSize_16384b)) 
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Transfer_Direction 
+  * @{
+  */
+
+#define SDIO_TransferDir_ToCard             ((uint32_t)0x00000000)
+#define SDIO_TransferDir_ToSDIO             ((uint32_t)0x00000002)
+#define IS_SDIO_TRANSFER_DIR(DIR) (((DIR) == SDIO_TransferDir_ToCard) || \
+                                   ((DIR) == SDIO_TransferDir_ToSDIO))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Transfer_Type 
+  * @{
+  */
+
+#define SDIO_TransferMode_Block             ((uint32_t)0x00000000)
+#define SDIO_TransferMode_Stream            ((uint32_t)0x00000004)
+#define IS_SDIO_TRANSFER_MODE(MODE) (((MODE) == SDIO_TransferMode_Stream) || \
+                                     ((MODE) == SDIO_TransferMode_Block))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_DPSM_State 
+  * @{
+  */
+
+#define SDIO_DPSM_Disable                    ((uint32_t)0x00000000)
+#define SDIO_DPSM_Enable                     ((uint32_t)0x00000001)
+#define IS_SDIO_DPSM(DPSM) (((DPSM) == SDIO_DPSM_Enable) || ((DPSM) == SDIO_DPSM_Disable))
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Flags 
+  * @{
+  */
+
+#define SDIO_FLAG_CCRCFAIL                  ((uint32_t)0x00000001)
+#define SDIO_FLAG_DCRCFAIL                  ((uint32_t)0x00000002)
+#define SDIO_FLAG_CTIMEOUT                  ((uint32_t)0x00000004)
+#define SDIO_FLAG_DTIMEOUT                  ((uint32_t)0x00000008)
+#define SDIO_FLAG_TXUNDERR                  ((uint32_t)0x00000010)
+#define SDIO_FLAG_RXOVERR                   ((uint32_t)0x00000020)
+#define SDIO_FLAG_CMDREND                   ((uint32_t)0x00000040)
+#define SDIO_FLAG_CMDSENT                   ((uint32_t)0x00000080)
+#define SDIO_FLAG_DATAEND                   ((uint32_t)0x00000100)
+#define SDIO_FLAG_STBITERR                  ((uint32_t)0x00000200)
+#define SDIO_FLAG_DBCKEND                   ((uint32_t)0x00000400)
+#define SDIO_FLAG_CMDACT                    ((uint32_t)0x00000800)
+#define SDIO_FLAG_TXACT                     ((uint32_t)0x00001000)
+#define SDIO_FLAG_RXACT                     ((uint32_t)0x00002000)
+#define SDIO_FLAG_TXFIFOHE                  ((uint32_t)0x00004000)
+#define SDIO_FLAG_RXFIFOHF                  ((uint32_t)0x00008000)
+#define SDIO_FLAG_TXFIFOF                   ((uint32_t)0x00010000)
+#define SDIO_FLAG_RXFIFOF                   ((uint32_t)0x00020000)
+#define SDIO_FLAG_TXFIFOE                   ((uint32_t)0x00040000)
+#define SDIO_FLAG_RXFIFOE                   ((uint32_t)0x00080000)
+#define SDIO_FLAG_TXDAVL                    ((uint32_t)0x00100000)
+#define SDIO_FLAG_RXDAVL                    ((uint32_t)0x00200000)
+#define SDIO_FLAG_SDIOIT                    ((uint32_t)0x00400000)
+#define SDIO_FLAG_CEATAEND                  ((uint32_t)0x00800000)
+#define IS_SDIO_FLAG(FLAG) (((FLAG)  == SDIO_FLAG_CCRCFAIL) || \
+                            ((FLAG)  == SDIO_FLAG_DCRCFAIL) || \
+                            ((FLAG)  == SDIO_FLAG_CTIMEOUT) || \
+                            ((FLAG)  == SDIO_FLAG_DTIMEOUT) || \
+                            ((FLAG)  == SDIO_FLAG_TXUNDERR) || \
+                            ((FLAG)  == SDIO_FLAG_RXOVERR) || \
+                            ((FLAG)  == SDIO_FLAG_CMDREND) || \
+                            ((FLAG)  == SDIO_FLAG_CMDSENT) || \
+                            ((FLAG)  == SDIO_FLAG_DATAEND) || \
+                            ((FLAG)  == SDIO_FLAG_STBITERR) || \
+                            ((FLAG)  == SDIO_FLAG_DBCKEND) || \
+                            ((FLAG)  == SDIO_FLAG_CMDACT) || \
+                            ((FLAG)  == SDIO_FLAG_TXACT) || \
+                            ((FLAG)  == SDIO_FLAG_RXACT) || \
+                            ((FLAG)  == SDIO_FLAG_TXFIFOHE) || \
+                            ((FLAG)  == SDIO_FLAG_RXFIFOHF) || \
+                            ((FLAG)  == SDIO_FLAG_TXFIFOF) || \
+                            ((FLAG)  == SDIO_FLAG_RXFIFOF) || \
+                            ((FLAG)  == SDIO_FLAG_TXFIFOE) || \
+                            ((FLAG)  == SDIO_FLAG_RXFIFOE) || \
+                            ((FLAG)  == SDIO_FLAG_TXDAVL) || \
+                            ((FLAG)  == SDIO_FLAG_RXDAVL) || \
+                            ((FLAG)  == SDIO_FLAG_SDIOIT) || \
+                            ((FLAG)  == SDIO_FLAG_CEATAEND))
+
+#define IS_SDIO_CLEAR_FLAG(FLAG) ((((FLAG) & (uint32_t)0xFF3FF800) == 0x00) && ((FLAG) != (uint32_t)0x00))
+
+#define IS_SDIO_GET_IT(IT) (((IT)  == SDIO_IT_CCRCFAIL) || \
+                            ((IT)  == SDIO_IT_DCRCFAIL) || \
+                            ((IT)  == SDIO_IT_CTIMEOUT) || \
+                            ((IT)  == SDIO_IT_DTIMEOUT) || \
+                            ((IT)  == SDIO_IT_TXUNDERR) || \
+                            ((IT)  == SDIO_IT_RXOVERR) || \
+                            ((IT)  == SDIO_IT_CMDREND) || \
+                            ((IT)  == SDIO_IT_CMDSENT) || \
+                            ((IT)  == SDIO_IT_DATAEND) || \
+                            ((IT)  == SDIO_IT_STBITERR) || \
+                            ((IT)  == SDIO_IT_DBCKEND) || \
+                            ((IT)  == SDIO_IT_CMDACT) || \
+                            ((IT)  == SDIO_IT_TXACT) || \
+                            ((IT)  == SDIO_IT_RXACT) || \
+                            ((IT)  == SDIO_IT_TXFIFOHE) || \
+                            ((IT)  == SDIO_IT_RXFIFOHF) || \
+                            ((IT)  == SDIO_IT_TXFIFOF) || \
+                            ((IT)  == SDIO_IT_RXFIFOF) || \
+                            ((IT)  == SDIO_IT_TXFIFOE) || \
+                            ((IT)  == SDIO_IT_RXFIFOE) || \
+                            ((IT)  == SDIO_IT_TXDAVL) || \
+                            ((IT)  == SDIO_IT_RXDAVL) || \
+                            ((IT)  == SDIO_IT_SDIOIT) || \
+                            ((IT)  == SDIO_IT_CEATAEND))
+
+#define IS_SDIO_CLEAR_IT(IT) ((((IT) & (uint32_t)0xFF3FF800) == 0x00) && ((IT) != (uint32_t)0x00))
+
+/**
+  * @}
+  */
+
+/** @defgroup SDIO_Read_Wait_Mode 
+  * @{
+  */
+
+#define SDIO_ReadWaitMode_CLK               ((uint32_t)0x00000000)
+#define SDIO_ReadWaitMode_DATA2             ((uint32_t)0x00000001)
+#define IS_SDIO_READWAIT_MODE(MODE) (((MODE) == SDIO_ReadWaitMode_CLK) || \
+                                     ((MODE) == SDIO_ReadWaitMode_DATA2))
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/*  Function used to set the SDIO configuration to the default reset state ****/
+void SDIO_DeInit(void);
+
+/* Initialization and Configuration functions *********************************/
+void SDIO_Init(SDIO_InitTypeDef* SDIO_InitStruct);
+void SDIO_StructInit(SDIO_InitTypeDef* SDIO_InitStruct);
+void SDIO_ClockCmd(FunctionalState NewState);
+void SDIO_SetPowerState(uint32_t SDIO_PowerState);
+uint32_t SDIO_GetPowerState(void);
+
+/* Command path state machine (CPSM) management functions *********************/
+void SDIO_SendCommand(SDIO_CmdInitTypeDef *SDIO_CmdInitStruct);
+void SDIO_CmdStructInit(SDIO_CmdInitTypeDef* SDIO_CmdInitStruct);
+uint8_t SDIO_GetCommandResponse(void);
+uint32_t SDIO_GetResponse(uint32_t SDIO_RESP);
+
+/* Data path state machine (DPSM) management functions ************************/
+void SDIO_DataConfig(SDIO_DataInitTypeDef* SDIO_DataInitStruct);
+void SDIO_DataStructInit(SDIO_DataInitTypeDef* SDIO_DataInitStruct);
+uint32_t SDIO_GetDataCounter(void);
+uint32_t SDIO_ReadData(void);
+void SDIO_WriteData(uint32_t Data);
+uint32_t SDIO_GetFIFOCount(void);
+
+/* SDIO IO Cards mode management functions ************************************/
+void SDIO_StartSDIOReadWait(FunctionalState NewState);
+void SDIO_StopSDIOReadWait(FunctionalState NewState);
+void SDIO_SetSDIOReadWaitMode(uint32_t SDIO_ReadWaitMode);
+void SDIO_SetSDIOOperation(FunctionalState NewState);
+void SDIO_SendSDIOSuspendCmd(FunctionalState NewState);
+
+/* CE-ATA mode management functions *******************************************/
+void SDIO_CommandCompletionCmd(FunctionalState NewState);
+void SDIO_CEATAITCmd(FunctionalState NewState);
+void SDIO_SendCEATACmd(FunctionalState NewState);
+
+/* DMA transfers management functions *****************************************/
+void SDIO_DMACmd(FunctionalState NewState);
+
+/* Interrupts and flags management functions **********************************/
+void SDIO_ITConfig(uint32_t SDIO_IT, FunctionalState NewState);
+FlagStatus SDIO_GetFlagStatus(uint32_t SDIO_FLAG);
+void SDIO_ClearFlag(uint32_t SDIO_FLAG);
+ITStatus SDIO_GetITStatus(uint32_t SDIO_IT);
+void SDIO_ClearITPendingBit(uint32_t SDIO_IT);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_SDIO_H */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm/main.c b/stm/main.c
index 801a0decd29bb06b557244a9f06ada73c1581e10..5dc03bc69d008d0f24ed111a3fe9d8a0948c3234 100644
--- a/stm/main.c
+++ b/stm/main.c
@@ -460,6 +460,21 @@ int main(void) {
     // enable the CCM RAM and the GPIO's
     RCC->AHB1ENR |= RCC_AHB1ENR_CCMDATARAMEN | RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN | RCC_AHB1ENR_GPIOCEN;
 
+    // configure SDIO pins to be high to start with (doesn't seem to fix problem...)
+    {
+      GPIO_InitTypeDef GPIO_InitStructure;
+      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
+      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
+      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
+      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
+      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
+      GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+      // Configure PD.02 CMD line
+      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+      GPIO_Init(GPIOD, &GPIO_InitStructure);
+    }
+
     // basic sub-system init
     sys_tick_init();
     led_init();
@@ -813,8 +828,9 @@ soft_reset:
     }
 
     // SD card testing
-    if (0) {
-        //sdio_init();
+    if (1) {
+        extern void sdio_init(void);
+        sdio_init();
     }
 
     printf("PYB: sync filesystems\n");
diff --git a/stm/mma.c b/stm/mma.c
index 48817b2d9786d1b978ed5fa82dc36976b505ca6f..937da1cf7e9abb59949a349c50a91b2d27437305 100644
--- a/stm/mma.c
+++ b/stm/mma.c
@@ -61,6 +61,7 @@ void mma_init(void) {
     I2C1->CR1 |= I2C_CR1_PE;
 
     // wait 20ms, then turn on AVDD, then wait 20ms again; this seems to work, but maybe can decrease delays
+    // doesn't work for soft reboot; 50ms doesn't work either...
     sys_tick_delay_ms(20);
     GPIOB->BSRRL = GPIO_Pin_5;
     sys_tick_delay_ms(20);
diff --git a/stm/sdio.c b/stm/sdio.c
new file mode 100644
index 0000000000000000000000000000000000000000..78488df1f9888afa478348b7c2fc965a14232b62
--- /dev/null
+++ b/stm/sdio.c
@@ -0,0 +1,60 @@
+// TODO
+// make it work with DMA
+
+#include <stdio.h>
+//#include "stm32f4xx_sdio.h"
+#include "stm324x7i_eval_sdio_sd.h"
+#include "misc.h"
+#include "systick.h"
+
+#define BLOCK_SIZE            512 /* Block Size in Bytes */
+
+uint8_t aBuffer_Block_Rx[BLOCK_SIZE];
+
+void sdio_init(void) {
+    SD_Error error = SD_Init();
+    printf("Init: %x\n", error);
+    uint8_t det = SD_Detect();
+    printf("Detc: %x\n", det);
+
+    if (!det) {
+        printf("no card detected\n");
+        SD_PowerOFF();
+        SD_DeInit();
+        return;
+    }
+
+    // read a block!
+    error = SD_ReadBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
+    printf("ReadBlock: %d\n", error);
+
+    /*
+    // Check if the Transfer is finished
+    error = SD_WaitReadOperation();
+    printf("WaitReadOp: %d\n", error);
+    */
+
+    uint32_t stc = sys_tick_counter;
+    while (SD_GetStatus() != SD_TRANSFER_OK) {
+        if (sys_tick_has_passed(stc, 2000)) {
+            printf("timeout waiting for read to finish\n");
+            break;
+        }
+    }
+    printf("done!!\n");
+
+    printf("%.16s", aBuffer_Block_Rx);
+
+    /*
+    snprintf((char*)aBuffer_Block_Rx, BLOCK_SIZE, "Here is some data back for you!\nBLOCK_SIZE=%d\n", BLOCK_SIZE);
+    error = SD_WriteBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
+    printf("WriteBlock: %d\n", error);
+
+    while (SD_GetStatus() != SD_TRANSFER_OK) {
+    }
+    printf("done writing!\n");
+    */
+
+    SD_PowerOFF();
+    SD_DeInit();
+}
diff --git a/stm/stm32fxxx_it.c b/stm/stm32fxxx_it.c
index bfad289226e772a5f7970217a8b01f1037cbe200..41e2f7b73585f1f441443023760204aec95ed9d0 100644
--- a/stm/stm32fxxx_it.c
+++ b/stm/stm32fxxx_it.c
@@ -230,7 +230,9 @@ void OTG_HS_EP1_OUT_IRQHandler(void)
 void SDIO_IRQHandler(void)
 {
   /* Process All SDIO Interrupt Sources */
-  //SD_ProcessIRQSrc();
+  // dpgeorge: i don't think this is used at the moment...
+  extern void SD_ProcessIRQSrc(void);
+  SD_ProcessIRQSrc();
 }
 
 /******************************************************************************/