#include "MyGirouette.h"
#include "Driver_GPIO.h"
#include "MyTimer.h"

int x = 0;

void EXTI0_IRQHandler(void) {
	x++;
	//EXTI->PR &= ~(1<<0) ;
	TIM2 -> CNT = 0 ; 
	EXTI->PR |= (1<<0) ;
}


void Init_Girouette(void){
	
	MyGPIO_Struct_TypeDef GPIOA0={
		GPIOA,
		0,
		In_Floating
	};
	MyGPIO_Struct_TypeDef GPIOA1={
		GPIOA,
		1,
		In_Floating
	};
	MyGPIO_Struct_TypeDef GPIOB0={
		GPIOB,
		0,
		In_Floating
	};

	// Configuration du timer
	MyTimer_Struct_TypeDef TIM;
	TIM.Timer = TIM2;
	TIM.ARR = 360*2;
	TIM.PSC = 0;
	
	MyTimer_Base_Init(&TIM);
	
	TIM2->CCMR1 |= 0x1 << 0; //CH1
	TIM2->CCMR1 |= 0x1 << 8; //CH2

	TIM2->SMCR |= 0x1 << 0; // Capture Mode : 1 => seulement les fronts montants 2 => seulement les fronts descendants 3 => les 2 
	TIM2->CCMR1 |= 0x1 << 2;
	// 0 Reset
	NVIC->ISER[0] |= 1 << 6;
	NVIC->IP[6] = 1<<4;
	MyGPIO_Init(&GPIOB0);
	RCC->APB2ENR |= RCC_APB2ENR_AFIOEN ;
	AFIO->EXTICR[0] |= 0x0001; //  PB0 AFIO
	EXTI->RTSR |= 1 <<0 ; // rising
	EXTI->IMR |= 1<<0 ; //mask
	
	
	MyGPIO_Init(&GPIOA0);
	MyGPIO_Init(&GPIOA1);
	MyTimer_Base_Start(TIM2);
}

uint16_t Get_Angle(void){return (TIM2 -> CNT)/2;}