add a watchdog

1 files changed, 13 insertions, 1 deletions

diff --git a/sensor/thermostat.ino b/sensor/thermostat.ino
index 2214ae0..2b7236c 100644
--- a/sensor/thermostat.ino
+++ b/sensor/thermostat.ino
@@ -3,7 +3,7 @@
 #include "SSD1306.h"
 #include "DHTesp.h"
 #include "BLEDevice.h"
-#include "GeneralUtils.h"
+#include "Ticker.h"
 
 static BLEUUID thermo_service_uuid("11111111-2222-3333-4444-000000000000");
 static BLEUUID thermo_temp_uuid("11111111-2222-3333-4444-000000000001");
@@ -11,6 +11,7 @@ static BLEUUID thermo_time_uuid("11111111-2222-3333-4444-000000000002");
 
 #define NO_SERVER_SLEEP_TIME 60
 #define ON_ERROR_SLEEP_TIME 30
+#define WATCHDOG_SECONDS 30
 /* Conversion factor for micro seconds to seconds */
 #define uS_TO_S_FACTOR 1000000
 
@@ -124,11 +125,22 @@ void setup() {
   BLEDevice::init("");
 }
 
+void watchdog_cb() {
+  show("watchdog");
+  enable_sensor(false);
+  delay(2000);
+  esp_sleep_enable_timer_wakeup(ON_ERROR_SLEEP_TIME * uS_TO_S_FACTOR);
+  esp_deep_sleep_start();
+}
+
 void loop() {
   display.displayOn();
   display.clear();
   enable_sensor(true);
 
+  Ticker watchdog_timer;
+  watchdog_timer.attach(WATCHDOG_SECONDS,watchdog_cb);
+
   BLEScan* pBLEScan = BLEDevice::getScan();
   MyAdvertisedDeviceCallbacks* cb = new MyAdvertisedDeviceCallbacks();
   pBLEScan->setAdvertisedDeviceCallbacks(cb);