#include "MyPWM.h"
#include "stm32f1xx_ll_bus.h" // Pour l'activation des horloges
#include "stm32f1xx_ll_tim.h"

void MyPWM_Conf_Output(TIM_TypeDef * Timer, int channel)
{	
	LL_TIM_OC_InitTypeDef My_LL_Tim_OC_Init_Struct;
	
	//Configuration du output channel en PWM
	LL_TIM_OC_StructInit(&My_LL_Tim_OC_Init_Struct);
	//Configure le mode de la PWM : PWM1 = 1 jusqu'à la CompareValue puis 0, PWM2 = l'inverse
	My_LL_Tim_OC_Init_Struct.OCMode = LL_TIM_OCMODE_PWM1;
	
	LL_TIM_OC_Init(Timer,channel,&My_LL_Tim_OC_Init_Struct);
	
	//Activation du channel pour le timer considéré
	LL_TIM_CC_EnableChannel(Timer, channel);
}


//Configurer obligatoirement les channels 1 et 2 sur IC1 et IC2 ou IC3 et IC4
void MyPWM_Conf_Input(TIM_TypeDef * Timer, int channel1, int channel2)
{	
	LL_TIM_IC_InitTypeDef My_LL_Tim_IC_Init_Struct;
	
	//Configuration du channel1 (front montant, mappé sur TI1 = valeurs par défaut)
	LL_TIM_IC_StructInit(&My_LL_Tim_IC_Init_Struct);	
	LL_TIM_IC_Init(Timer,channel1,&My_LL_Tim_IC_Init_Struct);
	
	//Configuration du channel2 (front descendant, mappé sur TI1 = valeurs modifiées)
	LL_TIM_IC_StructInit(&My_LL_Tim_IC_Init_Struct);
		//Détection sur front descendant
	My_LL_Tim_IC_Init_Struct.ICPolarity = LL_TIM_IC_POLARITY_FALLING;
		//Mappage sur TI1
	My_LL_Tim_IC_Init_Struct.ICActiveInput = LL_TIM_ACTIVEINPUT_INDIRECTTI;
	LL_TIM_IC_Init(Timer,channel2,&My_LL_Tim_IC_Init_Struct);
	
	//Definition du trigger
	LL_TIM_SetTriggerInput(Timer, LL_TIM_TS_TI1FP1);
	
	//Configure le mode esclave en mode RESET
	LL_TIM_SetSlaveMode(Timer, LL_TIM_SLAVEMODE_RESET);
	
	//Activation des 2 channels pour le timer considéré
	LL_TIM_CC_EnableChannel(Timer, channel1);
	LL_TIM_CC_EnableChannel(Timer, channel2);
}


void MyPWM_Set_Impulse_Duration(TIM_TypeDef * Timer, uint32_t CompareValue, int channel)
{
	if (channel==LL_TIM_CHANNEL_CH1) LL_TIM_OC_SetCompareCH1(Timer, CompareValue);
	else if (channel==LL_TIM_CHANNEL_CH2) LL_TIM_OC_SetCompareCH2(Timer, CompareValue);
	else if (channel==LL_TIM_CHANNEL_CH3) LL_TIM_OC_SetCompareCH3(Timer, CompareValue);
	else  LL_TIM_OC_SetCompareCH4(Timer, CompareValue);
}

int MyPWM_Duty_Cycle_Permilles(TIM_TypeDef * Timer, int channel1, int channel2) {
	if(channel1 == LL_TIM_CHANNEL_CH1 && channel2 == LL_TIM_CHANNEL_CH2) {
		return LL_TIM_IC_GetCaptureCH2(Timer) / LL_TIM_IC_GetCaptureCH1(Timer) * 1000;
	}
	else {
		return -1;
	}
}