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PanSi21 2025-11-18 16:01:22 +01:00
parent e60146cdfe
commit 88b607c42f
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GPG key ID: 198E46F625BADD13
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49
Exp01/Core/Src/SEMAPHORE.c Normal file
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#include "SEMAPHORE.h"
#include "gpio.h"
char stato = 0;
char dir = 0;
void SEMAPHORE_init(void){
TIM7 -> ARR = ON_time;
TIM7 -> PSC = 24000; // set single timer ticks to 100us (240MHz/24000 = 10kHz) - 240MHz is APB1 clock freq.
TIM7 -> CR1 |= TIM_CR1_CEN;
TIM7 -> CNT = 0;
TIM7 -> DIER |= TIM_DIER_UIE;
//inizia con UNO acceso
GPIOB -> BSRR = on_0;
}
void SEMAPHORE_TIM7_interrupt(void){
// spegni tutto
GPIOB -> BSRR = off_0;
GPIOE -> BSRR = off_1;
GPIOB -> BSRR = off_2;
TIM7->SR = 0;
switch(stato){
case 0:
GPIOE -> BSRR = on_1;
stato = 1;
TIM7 -> ARR = ON_time;
break;
case 1:
if(!dir){
GPIOB -> BSRR = on_2;
stato = 2;
dir = 1;
}else{
GPIOB -> BSRR = on_0;
stato = 0;
dir = 0;
}
TIM7 -> ARR = OFF_time;
break;
case 2:
GPIOE -> BSRR = on_1;
stato = 1;
TIM7 -> ARR = ON_time;
break;
}
}