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debug_gpio.c
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Fri, Sep 27, 15:57

debug_gpio.c
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/*
* Copyright (C) 2017 EPFL-LSRO (Laboratoire de Systemes Robotiques).
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#include "debug_gpio.h"
#define N_GPIOS 3
#define DIO_PORT GPIOB
const uint32_t dio_gpios[N_GPIOS] = { GPIO_Pin_14, GPIO_Pin_13, GPIO_Pin_12 };
void dio_Init(void)
{
int i;
GPIO_InitTypeDef GPIO_InitStruct;
for(i=0; i<N_GPIOS; i++)
{
GPIO_InitStruct.GPIO_Pin = dio_gpios[i];
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(DIO_PORT, &GPIO_InitStruct);
GPIO_WriteBit(DIO_PORT, dio_gpios[i], Bit_RESET);
}
}
bool dio_Get(int pinIndex)
{
if(pinIndex >= 0 && pinIndex < N_GPIOS)
return GPIO_ReadInputDataBit(DIO_PORT, dio_gpios[pinIndex]);
else
return 0;
}
void dio_Set(int pinIndex, bool high)
{
if(pinIndex >= 0 && pinIndex < N_GPIOS)
{
GPIO_WriteBit(DIO_PORT, dio_gpios[pinIndex],
high ? Bit_SET : Bit_RESET);
}
}
void dio_Toggle(int pinIndex)
{
if(pinIndex >= 0 && pinIndex < N_GPIOS)
{
bool newState = !GPIO_ReadInputDataBit(DIO_PORT, dio_gpios[pinIndex]);
GPIO_WriteBit(DIO_PORT, dio_gpios[pinIndex],
newState ? Bit_SET : Bit_RESET);
}
}

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