85 lines
3.5 KiB
C
Executable file
85 lines
3.5 KiB
C
Executable file
#include "stm32f10x.h"
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#include "PWM.h"
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void MyTimer_PWM(TIM_TypeDef * Timer , int Channel){
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int pwrmd;
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#if POWERMODE //Powermode 1
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pwrmd = 0b110;
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#else
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pwrmd = 0b111; //Powermode 2
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#endif
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if (Channel == 1){
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Timer->CCMR1 &= ~(0b111<<4); //On clear les trois bits qui sont de pwm
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Timer->CCMR1 |= (pwrmd<<4); //On affecte le powermode au bits de lecture pour le µ-controlleur
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Timer->CCMR1 |= TIM_CCMR1_OC1PE; //Update preload, il n'affecte pas le valeur avant que la prochaine cycle
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Timer->CCER = TIM_CCER_CC1E; //Enable le pin voulu basculer
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}
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else if (Channel == 2){
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Timer->CCMR1 &= ~(0b111<<12); //Le TIMx_CCMR1 configure deux channels, de bit [6:4] CH1, [14:12] CH2 (OC2M = Output Channel 2 )
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Timer->CCMR1 |= (pwrmd<<12);
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Timer->CCMR1 |= TIM_CCMR1_OC2PE;
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Timer->CCER |= TIM_CCER_CC2E;
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}
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else if (Channel == 3){
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Timer->CCMR1 &= ~(0b111<<4);
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Timer->CCMR2 |= (pwrmd<<4);
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Timer->CCMR2 |= TIM_CCMR2_OC3PE;
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Timer->CCER |= TIM_CCER_CC3E;
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}
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else if (Channel == 4){
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Timer->CCMR1 &= ~(0b111<<12);
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Timer->CCMR2 |= (pwrmd<<12);
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Timer->CCMR2 |= TIM_CCMR2_OC4PE;
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Timer->CCER |= TIM_CCER_CC4E;
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}
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//En dessous d'ici, on a l'aide du plus gentil chat que je connais
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// Enable auto-reload preload -- //Ensures that your initial configuration — PWM mode, duty cycle, period — actually takes effect before the timer starts counting.
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Timer->CR1 |= TIM_CR1_ARPE;
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// Force update event to load ARR and CCR values immediately
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Timer->EGR |= TIM_EGR_UG;
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// Start the timer
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Timer->CR1 |= TIM_CR1_CEN;
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switch (Channel) {
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case 1:
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if (Timer == TIM1){GPIOA->CRH &= ~(0xF<<0*4); GPIOA->CRH |= (0xA<<0*4); TIM1->BDTR |= 1<<15; }
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if (Timer == TIM2){GPIOA->CRL &= ~(0xF<<0*4); GPIOA->CRL |= (0xA<<0*4);}
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if (Timer == TIM3){GPIOA->CRL &= ~(0xF<<6*4); GPIOA->CRL |= (0xA<<6*4);}
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if (Timer == TIM4){GPIOB->CRL &= ~(0xF<<5*4); GPIOB->CRL |= (0xA<<5*4);}
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break;
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case 2:
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if (Timer == TIM1){GPIOA->CRH &= ~(0xF<<1*4); GPIOA->CRL |= (0xA<<1*4); TIM1->BDTR |= 1<<15;}
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if (Timer == TIM2){GPIOA->CRL &= ~(0xF<<1*4); GPIOA->CRL |= (0xA<<1*4);}
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if (Timer == TIM3){GPIOA->CRL &= ~(0xF<<7*4); GPIOA->CRL |= (0xA<<7*4);}
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if (Timer == TIM4){GPIOB->CRL &= ~(0xF<<7*4); GPIOB->CRL |= (0xA<<7*4);}
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break;
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case 3:
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if (Timer == TIM1){GPIOA->CRH &= ~(0xF<<2*4); GPIOA->CRH |= (0xA<<2*4); TIM1->BDTR |= 1<<15;}
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if (Timer == TIM2){GPIOA->CRL &= ~(0xF<<2*4); GPIOA->CRL |= (0xA<<2*4);}
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if (Timer == TIM3){GPIOB->CRL &= ~(0xF<<0*4); GPIOB->CRL |= (0xA<<0*4);}
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if (Timer == TIM4){GPIOB->CRH &= ~(0xF<<0*4); GPIOB->CRH |= (0xA<<0*4);}
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break;
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case 4:
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if (Timer == TIM1){GPIOA->CRH &= ~(0xF<<3*4); GPIOA->CRH |= (0xA<<3*4); TIM1->BDTR |= 1<<15;}
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if (Timer == TIM2){GPIOA->CRL &= ~(0xF<<3*4); GPIOA->CRL |= (0xA<<3*4);}
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if (Timer == TIM3){GPIOB->CRL &= ~(0xF<<1*4); GPIOB->CRL |= (0xA<<1*4);}
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if (Timer == TIM4){GPIOB->CRH &= ~(0xF<<1*4); GPIOB->CRH |= (0xA<<1*4);}
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}
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}
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//Une fonction qui met le bon PWM voulu
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int Set_DutyCycle_PWM(TIM_TypeDef *Timer, int Channel, int DutyC){
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int CCR_VAL = (Timer -> ARR + 1) * DutyC / 100;
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switch (Channel){
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case 1: Timer->CCR1 = CCR_VAL;
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case 2: Timer->CCR2 = CCR_VAL;
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case 3: Timer->CCR3 = CCR_VAL;
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case 4: Timer->CCR4 = CCR_VAL;
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default: break;
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}
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return 0;
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Timer->EGR |= TIM_EGR_UG;
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}
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