gpio_stdperiph.c

This example shows how to create an output gpio pin only with the STMicroelectonics board support package.

/*
 * This example shows how to create an output gpio pin only with the
 * STMicroelectonics board support package.
 */

#include <stm32f4xx.h>

int main(void) {

    GPIO_InitTypeDef GPIO_InitStruct;

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    GPIO_StructInit(&GPIO_InitStruct);
    GPIO_InitStruct.GPIO_Speed = GPIO_High_Speed;
    GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0;
    GPIO_Init(GPIOA, &GPIO_InitStruct);

    for (;;) {
        GPIO_WriteBit(GPIOA, GPIO_Pin_0, Bit_SET);
        GPIO_WriteBit(GPIOA, GPIO_Pin_0, Bit_RESET);
    }

    return 0;
}