main.c

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "led.h"
/** @addtogroup Template_Project
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/
//GPIO_InitTypeDef  GPIO_InitStructure;
void delay(__IO uint32_t ncount);
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       files (startup_stm32f40_41xxx.s/startup_stm32f427_437xx.s/
       startup_stm32f429_439xx.s/startup_stm32f401xx.s or startup_stm32f411xe.s)
       before to branch to application main.
       To reconfigure the default setting of SystemInit() function, 
       refer to system_stm32f4xx.c file */
#if 0
   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE);
 
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
   GPIO_InitStructure.GPIO_PuPd       = GPIO_PuPd_NOPULL;
   GPIO_Init(GPIOD,&GPIO_InitStructure);  
#endif


	gpio_init();

  /* Infinite loop */
  while (1)
  {
	GPIO_SetBits(GPIOD,GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15);
	delay(0x3fffff);
	GPIO_ResetBits(GPIOD,GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15);
	delay(0x3fffff);
  }
}

void delay(__IO uint32_t ncount)
{
	while(ncount--)
	{
	}
}