/**
  ******************************************************************************
  * @file    main.c
  * @author  Ac6
  * @version V1.0
  * @date    01-December-2013
  * @brief   Default main function.
  ******************************************************************************
*/


#include "stm32f4xx.h"
			

volatile uint32_t timer_ms = 0;

void SysTick_Handler()
{
 if (timer_ms) {
 timer_ms--;
 }
}

void delay(int time)
{
 timer_ms = time;
 while (timer_ms) {};
}

void EXTI15_10_IRQHandler()
{
	if(EXTI_GetITStatus(EXTI_Line13))
	{
		if(GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_13) == 0)
		{
			GPIO_ToggleBits(GPIOA, GPIO_Pin_5);

			EXTI_ClearFlag(EXTI_Line13);
			EXTI_ClearITPendingBit(EXTI_Line13);

		}
		else
			GPIO_ResetBits(GPIOA, GPIO_Pin_5);
		}
}


int main(void)
{
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
	GPIO_InitTypeDef GPIO_A;
	GPIO_StructInit(&GPIO_A);
	GPIO_A.GPIO_Pin = GPIO_Pin_5;
	GPIO_A.GPIO_Mode = GPIO_Mode_OUT;
	GPIO_A.GPIO_OType = GPIO_OType_PP;
	GPIO_Init(GPIOA, &GPIO_A);


	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
	GPIO_InitTypeDef GPIO_C;
	GPIO_StructInit(&GPIO_C);
	GPIO_C.GPIO_Pin = GPIO_Pin_13;
	GPIO_C.GPIO_Mode = GPIO_Mode_IN;
	GPIO_C.GPIO_PuPd = GPIO_PuPd_UP;
	GPIO_Init(GPIOC, &GPIO_C);


	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
	EXTI_InitTypeDef exti;
	EXTI_StructInit(&exti);
	exti.EXTI_Line = EXTI_Line13;
	exti.EXTI_Mode = EXTI_Mode_Interrupt;
	exti.EXTI_Trigger = EXTI_Trigger_Falling;
	exti.EXTI_LineCmd = ENABLE;
	EXTI_Init(&exti);


	SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource13);
	NVIC_InitTypeDef nvic;
	nvic.NVIC_IRQChannel = EXTI15_10_IRQn;
	nvic.NVIC_IRQChannelPreemptionPriority = 0x00;
	nvic.NVIC_IRQChannelSubPriority = 0x00;
	nvic.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&nvic);


	SysTick_Config(SystemCoreClock / 1000);


	while(1)
	{}

}