ESP32 randomly stop working
Posted: Tue Jan 05, 2021 8:41 am
Hello I have random failures on the ESP32 I program with Arduino IDE.
The sketch only does a simple temperature and relay circuit via MQTT. I use a W5500 Ethernet Shield for the internet connection.
At some point I get only cryptic characters via the Serial port, but only purely randomly. Only a power interrupt can fix the error. Actually the ESP32 should run 24/7, but sometimes it doesn't last a day.
Here is an output from the Serial Monitor:
An excerpt from the sketch is here:
Which information do you also need?
I hope you have a tip.
The sketch only does a simple temperature and relay circuit via MQTT. I use a W5500 Ethernet Shield for the internet connection.
At some point I get only cryptic characters via the Serial port, but only purely randomly. Only a power interrupt can fix the error. Actually the ESP32 should run 24/7, but sometimes it doesn't last a day.
Here is an output from the Serial Monitor:
Code: Select all
�JPQ�QQB��(Q�QQQ�TU��UP��QQEQB��(QUQQQ�TU��UP��QQEQB��(QUQQQ�TU��UP��QQEQB��(Q�QQQ�TU��UP��QQ�QB��(QUQ�TU��UP��QQEQB��(QUQQQ�TU��UP��QQEQB��(Q�QQQ�TU��UP��QQQQ���(Q�QQQ�TU��UP��QQ�QB��(Q�QQQ�TU��UP��QQQQB��(QEQ�TU��UP��QQ�QB��(Q�QQQ�TU��UP��QQ�QB��(Q�QQQ�TU��UP��QQEQB��(Q�QQQ�TU��UP��QQ�QB��(QUQ�TU��UP��QQEQB��(QUQQQ�TU��UP��Q�QQ���(Q�Q�TU��UP��Q��QB��(Q*QQ�TU��UP��Q�EQB��(Q�Q�TU��UP��Q�EQB��(Q�Q�TU��UP��Q�EQB��(QJQQ�TU��UP��Q��QB��(Q�QQ�TU��UP��Q�EQB��(Q�Q�TU��UP��Q�EQB��(QjQQ�TU��UP��Q�QQ���(Q�QQ�TU��UP��Q��QB��(Q�QQ�TU��UP��Q�QQB��(Q*(Q�*�P�V��ET�Q�UU�T��-�QVQ���J�UU�UT*T*J��ZqT��T�J�R�J�u�uT�T��U���-QBU��j��EJ�R�Zq��R�Zq�uT�Zq���R�Zq��WխQ(���խQ(Eե�I���T�U�UZ�Eu����(��UVKEu��RUQj�UV+U�UJ�Q�TUU�
Code: Select all
void loop() {
unsigned long currentMillis = millis();
if (!client.connected()) {
reconnect();
}
client.loop();
if (currentMillis - Temperaturabfrage_letzter_Zeitstempel >= Temperaturabfrage_Zeitintervall) {
Temperaturabfrage_letzter_Zeitstempel = currentMillis;
sensors.requestTemperatures();
Serial.print("Temperatur PCB: ");
float temp0 = sensors.getTempC(Temp_PCB);
temp0 = ((int)(temp0*10)) / 10.0;
Serial.println(temp0);
client.publish("/Temperatur/Keller/PCB", String(temp0).c_str());
Serial.print("Temperatur Gewächshaus oben: ");
float temp1 = sensors.getTempC(Temp_oben);
temp1 = ((int)(temp1*10)) / 10.0;
Serial.println(temp1);
client.publish("/Temperatur/Keller/Gewaechshaus_oben", String(temp1).c_str());
Serial.print("Temperatur Gewächshaus unten: ");
float temp2 = sensors.getTempC(Temp_unten);
temp2 = ((int)(temp2*10)) / 10.0;
Serial.println(temp2);
client.publish("/Temperatur/Keller/Gewaechshaus_unten", String(temp2).c_str());
}
if (currentMillis - Temperaturabfrage_Gewaechshaus_letzter_Zeitstempel >= Temperaturabfrage_Gewaechshaus_Zeitintervall) {
Temperaturabfrage_Gewaechshaus_letzter_Zeitstempel = currentMillis;
sensors.requestTemperatures();
Serial.print("Temperatur Gewächshaus oben für Heizung: ");
float temp_oben_heizung = sensors.getTempC(Temp_oben);
temp_oben_heizung = ((int)(temp_oben_heizung*10)) / 10.0;
Serial.println(temp_oben_heizung);
client.publish("/Temperatur/Keller/Heizung/Gewaechshaus_oben", String(temp_oben_heizung).c_str());
Serial.print("Temperatur Gewächshaus unten für Heizung: ");
float temp_unten_heizung = sensors.getTempC(Temp_unten);
temp_unten_heizung = ((int)(temp_unten_heizung*10)) / 10.0;
Serial.println(temp_unten_heizung);
client.publish("/Temperatur/Keller/Heizung/Gewaechshaus_unten", String(temp_unten_heizung).c_str());
}
if (currentMillis - Heizung_letzter_Zeitstempel >= Heizung_Zeitintervall) {
Heizung_letzter_Zeitstempel = currentMillis;
if (power_gewaechshaus == '1') {
Serial.println("Gewächshaus Heizung: ON");
mcp1.digitalWrite(Heizung_Power, HIGH);
}
if (power_gewaechshaus == '0') {
Serial.println("Gewächshaus Heizung: OFF");
mcp1.digitalWrite(Heizung_Power, LOW);
}
}
}
I hope you have a tip.