//***********************************************************************************************
// Hardwarebasis:   F4DISCOVERY
// Programm:        Blinky

// Mikrocontroller: STM32F407VG (ARM 32-bit CORTEX-M4)
// Speicher:        1MB FLASH, 192KB SRAM
// Taktfrequenz:    Quarz: 8MHz, mit PLL auf: 168MHz
// Stand:           16.12.2012
// IDE/Compiler:    CooCox CoIDE 1.5.1
//***********************************************************************************************

/*
 Hinweis zum Clock fuer 8MHz Quarz, damit er auf 168MHz läuft (betrifft das stm32F4Discovery):

 in der system_stm32f4xx.c muss eingetragen sein:
 PLL_M = 8

 in der stm32f4xx.h muss eingetragen sein:
 HSE_VALUE = 8000000
 */

// Includes
#include <stdio.h>
#include <stdlib.h>

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"

// Defines
// LEDs
#define LD_3_AUS	GPIO_ResetBits(GPIOD,GPIO_Pin_13) // orange LED
#define LD_3_EIN	GPIO_SetBits(GPIOD,GPIO_Pin_13)

static uint32_t TimingDelay;

// Peripherie-Einstellungen
void SetupPeripherie(void) {
	GPIO_InitTypeDef GPIO_InitStructure;

	// GPIOD Takt freigeben
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);

// LEDs als Ausgang
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_Init(GPIOD, &GPIO_InitStructure);

}

void Delay(uint32_t nTime) {
	TimingDelay = nTime;

	while (TimingDelay != 0)
		;
}

void TimingDelay_Decrement(void) {
	if (TimingDelay != 0x00) {
		TimingDelay--;
	}
}
void SysTick_Handler(void) {
	TimingDelay_Decrement();
}

int main(void) {
	SystemInit();
	SetupPeripherie();
	if (SysTick_Config(SystemCoreClock / 1000)) {
		/* Capture error */
		while (1)
			;
	}
	while (1) {
		LD_3_EIN;
		Delay(1000);  //1000ms Delay
		LD_3_AUS;
		Delay(1000);  //1000ms Delay
	}

}