Vehicle Researcher d64fb1838d openpilot v0.9.7 release
date: 2024-06-11T01:36:39
master commit: f8cb04e4a8b032b72a909f68b808a50936184bee
2024-06-11 16:32:27 -07:00

24 lines
670 B
C

// TACH interrupt handler
void EXTI2_IRQ_Handler(void) {
volatile unsigned int pr = EXTI->PR & (1U << 2);
if ((pr & (1U << 2)) != 0U) {
fan_state.tach_counter++;
}
EXTI->PR = (1U << 2);
}
void llfan_init(void) {
// 5000RPM * 4 tach edges / 60 seconds
REGISTER_INTERRUPT(EXTI2_IRQn, EXTI2_IRQ_Handler, 700U, FAULT_INTERRUPT_RATE_TACH)
// Init PWM speed control
pwm_init(TIM3, 3);
// Init TACH interrupt
register_set(&(SYSCFG->EXTICR[0]), SYSCFG_EXTICR1_EXTI2_PD, 0xF00U);
register_set_bits(&(EXTI->IMR), (1U << 2));
register_set_bits(&(EXTI->RTSR), (1U << 2));
register_set_bits(&(EXTI->FTSR), (1U << 2));
NVIC_EnableIRQ(EXTI2_IRQn);
}