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/*******************************************************************************
* 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: 2018-08-13 23:38:48 +0000 (Mon, 13 Aug 2018) $
* $Revision: 36945 $
*
******************************************************************************/
#include "mxc_config.h"
#include "mxc_assert.h"
#include "pb.h"
#include "portexpander.h"
#include "MAX77650-Arduino-Library.h"
#include <stddef.h>
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/******************************************************************************/
int PB_Init(void)
{
int retval = E_NO_ERROR;
unsigned int i;
// If we have a port expander, its pins are already configured
if(!portexpander_detected()) {
// Enable pushbutton inputs
for (i = 0; i < num_pbs; i++) {
if (GPIO_Config(&pb_pin[i]) != E_NO_ERROR) {
retval = E_UNKNOWN;
}
}
}
return retval;
}
/******************************************************************************/
int PB_RegisterCallback(unsigned int pb, pb_callback callback)
{
MXC_ASSERT(pb < num_pbs);
// TODO: portexpander support
if (callback) {
// Register callback
GPIO_RegisterCallback(&pb_pin[pb], callback, (void*)pb);
// Configure and enable interrupt
GPIO_IntConfig(&pb_pin[pb], GPIO_INT_EDGE, GPIO_INT_FALLING);
GPIO_IntEnable(&pb_pin[pb]);
NVIC_EnableIRQ((IRQn_Type)MXC_GPIO_GET_IRQ(pb_pin[pb].port));
} else {
// Disable interrupt and clear callback
GPIO_IntDisable(&pb_pin[pb]);
GPIO_RegisterCallback(&pb_pin[pb], NULL, NULL);
}
return E_NO_ERROR;
}
//******************************************************************************
void PB_IntEnable(unsigned int pb)
{
// TODO: portexpander support
MXC_ASSERT(pb < num_pbs);
GPIO_IntEnable(&pb_pin[pb]);
}
//******************************************************************************
void PB_IntDisable(unsigned int pb)
{
// TODO: portexpander support
MXC_ASSERT(pb < num_pbs);
GPIO_IntDisable(&pb_pin[pb]);
}
//******************************************************************************
void PB_IntClear(unsigned int pb)
{
// TODO: portexpander support
MXC_ASSERT(pb < num_pbs);
GPIO_IntClr(&pb_pin[pb]);
}
//******************************************************************************
int PB_Get(unsigned int pb)
{
static const uint8_t expander_pins[] = {5, 0x0, 3, 6};
MXC_ASSERT(pb < 4);
switch(pb) {
case 1:
case 3:
case 4:
if(portexpander_detected()) {
uint8_t port = portexpander_get();
return (port & (1 << expander_pins[pb-1])) == 0;
} else {
return GPIO_InGet(&pb_pin[pb-1]) == 0;
}
break;
case 2:
return MAX77650_getDebounceStatusnEN0();