Blinking LED for the STM32l1xx

stm32-blinky.c

#include "stm32l1xx.h"

int main() {
	GPIO_InitTypeDef ledInit;
	long i = 0;

 	// enable the GPIOB peripheral
  	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

  	// configure pins 6 and 7 as GPIO output
	ledInit.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_6;
	ledInit.GPIO_Mode = GPIO_Mode_OUT;
  	// initialize the peripheral
	GPIO_Init(GPIOB, &ledInit);	
  	// turn pins 6 and 7 on
	GPIO_SetBits(GPIOB, GPIO_Pin_7 | GPIO_Pin_6);

  	// loop forever
	for (;;) {
    	        // toggle pins 6 and 7
       	        GPIO_ToggleBits(GPIOB, GPIO_Pin_7 | GPIO_Pin_6);
           	// waste time
	        for (i=0; i<25000; i++);
	}
    return 0;
}