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Fix ISR safety: add IRAM_ATTR, remove ESP_LOG calls, add volatile

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Co-authored-by: pmarchini <49943249+pmarchini@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2026-01-25 18:41:05 +00:00
parent c57271fc5c
commit aa284ddead
1 changed files with 9 additions and 13 deletions
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22
src/components/esp32-triac-dimmer-driver/esp32-triac-dimmer-driver.c
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@@ -33,7 +33,7 @@ typedef struct {
} example_queue_element_t;
/* Event queue for single-fire timer implementation */
static timer_event_t event_queue[MAX_TIMER_EVENTS];
static volatile timer_event_t event_queue[MAX_TIMER_EVENTS];
static volatile int event_queue_size = 0;
static uint64_t alarm_interval_ticks = 0; // Calculated based on AC frequency (set by config_alarm)
static uint64_t pulse_width_ticks = 0; // Pre-calculated pulse width in ticks (set by config_alarm)
@@ -79,7 +79,7 @@ static void init_event_queue(void)
* @brief Find the next event in queue (earliest timestamp)
* @return Index of next event, or -1 if queue is empty
*/
static int find_next_event_index(void)
static int IRAM_ATTR find_next_event_index(void)
{
int next_idx = -1;
uint64_t earliest_time = UINT64_MAX;
@@ -103,19 +103,19 @@ static int find_next_event_index(void)
* @param event_type Type of event (fire or end pulse)
* @return true if event was scheduled, false if queue is full or invalid input
*/
static bool schedule_timer_event(uint64_t timestamp, uint8_t dimmer_id, timer_event_type_t event_type)
static bool IRAM_ATTR schedule_timer_event(uint64_t timestamp, uint8_t dimmer_id, timer_event_type_t event_type)
{
// Validate dimmer_id to prevent array bounds violations
if (dimmer_id >= ALL_DIMMERS)
{
ESP_LOGE(TAG, "Invalid dimmer_id: %d (max: %d)", dimmer_id, ALL_DIMMERS - 1);
// Cannot use ESP_LOGE in ISR - silently fail
return false;
}
// Validate event_type
if (event_type != EVENT_FIRE_TRIAC && event_type != EVENT_END_PULSE)
{
ESP_LOGE(TAG, "Invalid event_type: %d", event_type);
// Cannot use ESP_LOGE in ISR - silently fail
return false;
}
@@ -133,8 +133,7 @@ static bool schedule_timer_event(uint64_t timestamp, uint8_t dimmer_id, timer_ev
}
}
// Queue is full
ESP_LOGE(TAG, "Event queue full!");
// Queue is full - cannot use ESP_LOGE in ISR
return false;
}
@@ -142,7 +141,7 @@ static bool schedule_timer_event(uint64_t timestamp, uint8_t dimmer_id, timer_ev
* @brief Remove an event from the queue
* @param index Index of event to remove
*/
static void remove_event(int index)
static void IRAM_ATTR remove_event(int index)
{
if (index >= 0 && index < MAX_TIMER_EVENTS && event_queue[index].active)
{
@@ -518,10 +517,10 @@ static void IRAM_ATTR onTimerISR(void *para)
// If scheduling failed, turn off triac immediately
// to prevent it staying on
// Cannot use ESP_LOGE in ISR - silently handle error
if (!scheduled)
{
gpio_set_level(dimOutPin[event->dimmer_id], 0);
ESP_LOGE(TAG, "Failed to schedule pulse end for dimmer %d", event->dimmer_id);
}
}
else if (event->event_type == EVENT_END_PULSE)
@@ -530,10 +529,7 @@ static void IRAM_ATTR onTimerISR(void *para)
gpio_set_level(dimOutPin[event->dimmer_id], 0);
}
}
else
{
ESP_LOGE(TAG, "Invalid dimmer_id in event: %d", event->dimmer_id);
}
// Silently ignore invalid dimmer_id - cannot use ESP_LOGE in ISR
// Remove processed event
remove_event(i);