Projet-Voilier-3/driver/Driver_GPIO.c

69 lines
1.7 KiB
C

#include "Driver_GPIO.h"
#include "stm32f10x.h"
#include "stdio.h"
/* GPIO init function */
void MyGPIO_Init ( MyGPIO_Struct_TypeDef * GPIOStructPtr )
{
/* Activation of the GPIO port specific clock */
if (GPIOStructPtr->GPIO == GPIOA)
{
RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;
}
else if (GPIOStructPtr->GPIO == GPIOB)
{
RCC->APB2ENR |= RCC_APB2ENR_IOPBEN;
}
else if (GPIOStructPtr->GPIO == GPIOC)
{
RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;
}
else if (GPIOStructPtr->GPIO == GPIOD)
{
RCC->APB2ENR |= RCC_APB2ENR_IOPDEN;
}
/* Reset, and then configuration writing of the selected GPIO Pin */
if(GPIOStructPtr->GPIO_Pin <= 8)
{
GPIOStructPtr->GPIO->CRL &= ~(0xF<<(4*(GPIOStructPtr->GPIO_Pin)));
GPIOStructPtr->GPIO->CRL |= (GPIOStructPtr->GPIO_Conf)<<(4*(GPIOStructPtr->GPIO_Pin));
}
else
{
GPIOStructPtr->GPIO->CRH &= ~(0xF<<(4*((GPIOStructPtr->GPIO_Pin)%8)));
GPIOStructPtr->GPIO->CRH |= (GPIOStructPtr->GPIO_Conf)<<(4*((GPIOStructPtr->GPIO_Pin)%8));
}
if(GPIOStructPtr->GPIO_Conf == (char)In_PullDown)
{
GPIOStructPtr->GPIO->ODR &= ~(0x1<<(GPIOStructPtr->GPIO_Pin));
}
else if(GPIOStructPtr->GPIO_Conf == (char)In_PullUp)
{
GPIOStructPtr->GPIO->ODR |= 0x1<<(GPIOStructPtr->GPIO_Pin);
}
}
/* Read of the state of the GPIO */
int MyGPIO_Read ( GPIO_TypeDef * GPIO , char GPIO_Pin )
{
return ((GPIO->IDR & (0x1<<GPIO_Pin))>>GPIO_Pin);
}
/* Set the state of the GPIO */
void MyGPIO_Set (GPIO_TypeDef * GPIO , char GPIO_Pin)
{
GPIO->ODR |= 0x1<<GPIO_Pin;
}
/* Reset the state of the GPIO */
void MyGPIO_Reset (GPIO_TypeDef * GPIO , char GPIO_Pin)
{
GPIO->ODR &= ~(0x1<<GPIO_Pin);
}
/* Toogle the state of the GPIO */
void MyGPIO_Toggle ( GPIO_TypeDef * GPIO , char GPIO_Pin )
{
GPIO->ODR ^= 0x1<<GPIO_Pin;
}