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main.c

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    main.c 7.13 KiB
    /**
     * @file        main.c
     * @brief       I2C Loopback Example 
     * @details     This example uses the I2C Master to read/write from/to the I2C Slave. For
     *              this example you must connect P0.6 to P0.14 (SDA) and P0.7 to P0.15 (SCL). The Master
     *              will use P0.6 and P0.7. The Slave will use P0.14 and P0.15. You must also
     *              connect the pull-up jumpers (JP23 and JP24) to the proper I/O voltage.
     *              Refer to JP27 to determine the I/O voltage.
     * @note        Other devices on the EvKit will be using the same bus. This example cannot be combined with
     *              a PMIC or bluetooth example because the I2C Slave uses GPIO pins for those devices.
     */
    
    /*******************************************************************************
     * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
     *
     * Permission is hereby granted, free of charge, to any person obtaining a
     * copy of this software and associated documentation files (the "Software"),
     * to deal in the Software without restriction, including without limitation
     * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     * and/or sell copies of the Software, and to permit persons to whom the
     * Software is furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included
     * in all copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
     * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     * OTHER DEALINGS IN THE SOFTWARE.
     *
     * Except as contained in this notice, the name of Maxim Integrated
     * Products, Inc. shall not be used except as stated in the Maxim Integrated
     * Products, Inc. Branding Policy.
     *
     * The mere transfer of this software does not imply any licenses
     * of trade secrets, proprietary technology, copyrights, patents,
     * trademarks, maskwork rights, or any other form of intellectual
     * property whatsoever. Maxim Integrated Products, Inc. retains all
     * ownership rights.
     *
     * $Date: 2019-02-26 15:50:33 -0600 (Tue, 26 Feb 2019) $
     * $Revision: 41252 $
     *
     ******************************************************************************/
    
    /***** Includes *****/
    #include <stdio.h>
    #include <stdint.h>
    #include <string.h>
    #include "mxc_config.h"
    #include "pb.h"
    #include "i2c.h"
    
    /***** Definitions *****/
    #define I2C_MASTER	    MXC_I2C0_BUS0
    
    #define I2C_SLAVE	    MXC_I2C1_BUS0
    #define I2C_SLAVE_ADDR	(0x51<<1)
    
    /***** Globals *****/
    static uint8_t txdata[16];
    static uint8_t rxdata[16];
    
    volatile int i2c_flag;
    volatile int i2c_flag1;
    volatile int buttonPressed;