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This commit is contained in:
Edward Emelianov
2026-08-04 19:35:32 +03:00
parent 970d73dc38
commit 40d0605218
6 changed files with 30 additions and 19 deletions
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18
G4:G431/CORDIC/hardware.c
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@@ -28,24 +28,24 @@ void sys_tick_handler(){
}
static void timer_setup(){
RCC->APB1ENR1 |= RCC_APB1ENR1_TIM2EN;
RCC->APB1ENR1 |= RCC_APB1ENR1_TIM3EN;
__DSB();
TIM2->PSC = 84; // 85 MHz / 85 = 1 MHz
TIM2->ARR = 0xFFFFFFFF; // 32-bit auto-reload (maximum)
TIM2->CR1 = 0; // disable counter
TIM3->CR1 = 0; // disable counter
TIM3->PSC = 84; // 85 MHz / 85 = 1 MHz
TIM3->ARR = 0xFFFFFFFF; // 32-bit auto-reload (maximum)
}
void timer_start(){
TIM2->CNT = 0;
TIM2->CR1 |= TIM_CR1_CEN;
TIM3->CNT = 0;
TIM3->CR1 = TIM_CR1_CEN;
}
void timer_stop(){
TIM2->CR1 = 0;
TIM3->CR1 = 0;
}
uint32_t timer_read(){
return TIM2->CNT;
return TIM3->CNT;
}
void gpio_setup(){
@@ -62,7 +62,7 @@ void gpio_setup(){
// count milliseconds
SysTick_Config(SysFreq / 1000);
// Setup TIM2 for microsecond counting
// Setup TIM3 for microsecond counting
timer_setup();
}