diff --git a/components/driver/timer.c b/components/driver/timer.c index b31a784d4c..6b014f9f73 100644 --- a/components/driver/timer.c +++ b/components/driver/timer.c @@ -200,15 +200,17 @@ static void IRAM_ATTR timer_isr_default(void *arg) uint32_t intr_status = 0; timer_hal_get_intr_status(&(timer_obj->hal), &intr_status); if (intr_status & BIT(timer_obj->hal.idx)) { - is_awoken = timer_obj->timer_isr_fun.fn(timer_obj->timer_isr_fun.args); - //Clear intrrupt status + // Clear intrrupt status timer_hal_clear_intr_status(&(timer_obj->hal)); - //If the timer is set to auto reload, we need enable it again, so it is triggered the next time. - if (timer_hal_get_auto_reload(&timer_obj->hal)) { - timer_hal_set_alarm_enable(&(timer_obj->hal), TIMER_ALARM_EN); - } else { - timer_hal_set_alarm_enable(&(timer_obj->hal), TIMER_ALARM_DIS); - } + uint64_t old_alarm_value = 0; + timer_hal_get_alarm_value(&(timer_obj->hal), &old_alarm_value); + // call user registered callback + is_awoken = timer_obj->timer_isr_fun.fn(timer_obj->timer_isr_fun.args); + // reenable alarm if required + uint64_t new_alarm_value = 0; + timer_hal_get_alarm_value(&(timer_obj->hal), &new_alarm_value); + bool reenable_alarm = (new_alarm_value != old_alarm_value) || timer_hal_get_auto_reload(&timer_obj->hal); + timer_hal_set_alarm_enable(&(timer_obj->hal), reenable_alarm); } } TIMER_EXIT_CRITICAL(&timer_spinlock[timer_obj->timer_isr_fun.isr_timer_group]);