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feat(firmware): software heartbeat-miss watchdog reboots after 6h offline

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Reporter task counts consecutive heartbeat failures from the bool
returned by reporter_heartbeat (Task 5). After 6 consecutive misses
(~6 hours at the hourly cadence) the device logs EVT_HEARTBEAT_MISS
then EVT_REBOOT(REBOOT_HEARTBEAT_MISS) and restarts, giving the whole
network stack a clean reinitialization. The 200ms delay before the
restart lets NVS commit the REBOOT entry so the next boot can report
it via EVT_BOOT + esp_reset_reason().
This commit is contained in:
Peter Woolery
2026-04-23 13:52:07 -07:00
parent 7b546d0ed7
commit f08f70a8fb
1 changed files with 15 additions and 1 deletions
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16
firmware/src/main.cpp
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@@ -137,10 +137,24 @@ static void task_reporter(void*) {
reporter_submit_camera(g_cfg, cam_rec);
reporter_submit_ble(g_cfg, ble_rec);
reporter_heartbeat(g_cfg, millis() / 1000, WiFi.RSSI());
bool hb_ok = reporter_heartbeat(g_cfg, millis() / 1000, WiFi.RSSI());
ble_scanner_reinit();
led_set(false);
static uint8_t consecutive_misses = 0;
if (hb_ok) {
consecutive_misses = 0;
} else {
consecutive_misses++;
event_log_write(EVT_HEARTBEAT_MISS, consecutive_misses, 0);
Serial.printf("[WDG] heartbeat miss %u/6\n", consecutive_misses);
if (consecutive_misses >= 6) {
event_log_write(EVT_REBOOT, REBOOT_HEARTBEAT_MISS, 0);
delay(200); // let NVS commit before reboot
ESP.restart();
}
}
}
}