#include "stm32f0xx.h"
#include "stm32f0308_Discovery.h"

#define in0 GPIO_Pin_0
#define in1 GPIO_Pin_1
#define in2 GPIO_Pin_2
#define in3 GPIO_Pin_3
#define in4 GPIO_Pin_4
#define in5 GPIO_Pin_5
#define in_GPIO GPIOA


#define out0 GPIO_Pin_0
#define out1 GPIO_Pin_1
#define out2 GPIO_Pin_2
#define out3 GPIO_Pin_3
#define out4 GPIO_Pin_4
#define out5 GPIO_Pin_5
#define out_GPIO GPIOC



void TM_Delay_Init(void);
void TM_DelayMillis(uint32_t millis);
void TM_DelayMillis1(uint32_t millis);
void TM_DelayMillis2(uint32_t millis);

GPIO_InitTypeDef       GPIO_InitStructure ;

uint32_t multiplier;


int main(void)
{
					SystemInit();
					SystemCoreClockUpdate();
					TM_Delay_Init();
	
	
				RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
				RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
	
	
	/* Configure PA in input mode */
			GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0)|(GPIO_Pin_1);
			GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;									
			GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;							// enable internal Pullup resistors on the GPIO pins
			GPIO_Init(GPIOA, &GPIO_InitStructure);
	
	/* Configure PC15 - PC0 in output pushpull mode */
  GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0)|(GPIO_Pin_1);				//in this example ALL the pins (PC15 - PC0) are outputs
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;									
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;								
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;							
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;							
  GPIO_Init(GPIOC, &GPIO_InitStructure);	
	
	
	while(1)
	{
		if(GPIO_ReadInputDataBit(GPIOA,(GPIO_Pin_0))==1)
			{
				GPIO_SetBits(out_GPIO,(out0));
				TM_DelayMillis(7);
				GPIO_ResetBits(out_GPIO,(out0));
				
				while (GPIO_ReadInputDataBit(GPIOA, (GPIO_Pin_0))==1)
					GPIO_SetBits(out_GPIO,(out0));
					TM_DelayMillis1(3);
					GPIO_ResetBits(out_GPIO,(out1));
					TM_DelayMillis2(22);
			}
		}
	}

	void TM_DelayMillis(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 100 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}

void TM_DelayMillis1(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 1 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}

void TM_DelayMillis2(uint32_t millis) {
    /* Multiply millis with multipler */
    /* Substract 10 */
    millis = 1 * millis * multiplier - 10;
    /* 4 cycles for one loop */
    while (millis--);
}



void TM_Delay_Init(void) {
    RCC_ClocksTypeDef RCC_Clocks;
    
    /* Get system clocks */
    RCC_GetClocksFreq(&RCC_Clocks);
    
    /* While loop takes 4 cycles */
    /* For 1 us delay, we need to divide with 4M */
    multiplier = RCC_Clocks.HCLK_Frequency / 4000000;
}