Node only works for a few days

[gohan]

Before buying new hw it's better to do some cross tests to pin point where the problem is.

[FotoFieber]

I had a similar problem with the control of a heating mixer and three dallas sensors. I solved the problem with:

• replacement of the relays with solid state relays
• moved conttroller more in distance of the high voltage parts

I also added a watchdog and a reboot mechanism in case of sensor problems.

Maybe this sketch can give you an inspiration: (work in progress, MYS-Part not tested in depth)

// Enable debug prints to serial monitor
//#define MY_DEBUG      // in Mysensors
#define EN_DEBUG      // in this sketch
//#define NO_MYS      // ohne Mysensors Unterstützung?
//#define SIMULATION
#define NO_AC_DETECT  // ohne AC sensor
#define NO_RTC

// RTC nur zusammen mit Mysensors
#ifdef NO_MYS
#ifndef NO_RTC
#define NO_RTC
#endif
#endif

#ifdef SIMULATION
// für Simulation ohne Sensoren
#define SIMULATE_VOR  35
#define SIMULATE_RUE  30
#define SIMULATE_ZU   65


#ifdef SIMULATE_VOR
#warning Achtung! Keine Echtentemperaturmessungen -> Simulation
#endif

#ifdef SIMULATE_RUE
#warning Achtung! Keine Echtentemperaturmessungen -> Simulation
#endif

#ifdef SIMULATE_ZU
#warning Achtung! Keine Echtentemperaturmessungen -> Simulation
#endif
#endif


#define START_TARGET_TEMP 40
#define EEPROM_TARGET_TEMP 900            // Save Porisiton. It is above the Mysensors range of lib 2.1
#define EEPROM_POWERSTATE  902            // Save Porisiton. It is above the Mysensors range of lib 2.1
#define MAX_TEMP 50
#define VORLAUF 0
#define RUECKLAUF 1
#define ZULAUF 2
#define PUMPE 0
#define MISCHER_ZU  1
#define MISCHER_AUF 2
#define POWERLED 7                        // 8. LED
#define TEMPDOWNLED 5                     // 6. Led
#define TEMPUPLED 6                       // 7. Led
#ifndef NO_AC_DETECT
#define BUDERUSLED 4                      // 5. Led
#endif
#define RETRY_TIMEOUT_PUMP 2*60*1000UL     // alle 2 Minuten testen, ob Vorlauf nicht besser (5 Sekunden pumpen)
#define REGULATION_TIMEOUT_PUMP 30*1000UL  // 30 Sekunden warten nach neuer Einstellung
#define PROBE_TIMEOUT_PUMP 5*1000UL        // 5 Sekunden Pumpe für Test einschalten, wenn Zulauf zu kalt
#define BUDERUS_PIN 3                     // Buderus Powererkennung Pumpe auf PIN 3

#ifndef SIMULATION
#define MISCHER_RESET_TIME 120*1000UL      // 2 Minuten bis Nullstellung
#else
#define MISCHER_RESET_TIME 10*1000UL      // 10 Sekunden bis Nullstellung nei Simulation
#endif



#ifdef EN_DEBUG
#define DEBUG_PRINT(x) Serial.print (x)
#else
#define DEBUG_PRINT(x)
#endif

#ifdef EN_DEBUG
#define DEBUG_PRINTLN(x)  Serial.println (x)
#else
#define DEBUG_PRINTLN(x)
#endif

#ifndef NO_MYS
// Radio Configuration
#define MY_TRANSPORT_WAIT_READY_MS (10000ul)
#define MY_RADIO_RFM69
#define MY_RFM69_FREQUENCY RF69_868MHZ
#define MY_RFM69_NETWORKID 13
#define MY_RFM69_ENABLE_ENCRYPTION
#define MY_NODE_ID 168
//#define MY_IS_RFM69HW
#endif


#include <Arduino.h>
#include <avr/wdt.h>
#include <EEPROM.h>
#include <MemoryFree.h>

#ifndef NO_MYS
#define MIN_REPORT_INTERVAL  5 * 60 * 1000L   // mindestens alle 5 Minuten melden
#include <SPI.h>
#include <MySensors.h>
#include <Time.h>        //http://www.arduino.cc/playground/Code/Time
#include <Timezone.h>    //https://github.com/JChristensen/Timezone
#include <TimeLib.h>

//Central European Time (Frankfurt, Paris)
TimeChangeRule CEST = {"CEST", Last, Sun, Mar, 2, 120};     //Central European Summer Time
TimeChangeRule CET = {"CET ", Last, Sun, Oct, 3, 60};       //Central European Standard Time
Timezone CE(CEST, CET);
bool timeReceived = false;
unsigned long lastUpdate = 0, lastRequest = 0;
#endif

#ifndef NO_RTC
#include <DS3232RTC.h>  // A  DS3231/DS3232 library
#endif

#define MAX_LEDS 8

byte lastButtonState = 0;
#define RELAY_ON HIGH
#define RELAY_OFF LOW
#define RELAY_1  A0         // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
#define NUMBER_OF_RELAYS 4  // Total number of attached relays


boolean ledState[MAX_LEDS] = { false, false, false, false, false, false, false, false };
boolean relState[NUMBER_OF_RELAYS] = { false, false, false, false };

#include <TM1638.h>
#include <DallasTemperature.h>
#include <OneWire.h>

#define ONE_WIRE_BUS 6 // Pin where dallase sensor is connected 
#define TEMPERATURE_PRECISION 9
#define MAX_ATTACHED_DS18B20 3

//28B404080000804A
DeviceAddress Probe01 = { 0x28, 0xB4, 0x04, 0x08, 0x00, 0x00, 0x80, 0x4A };
//28C606080000803F
DeviceAddress Probe02 = { 0x28, 0xC6, 0x06, 0x08, 0x00, 0x00, 0x80, 0x3F };
//28750808000080C3
DeviceAddress Probe03 = { 0x28, 0x75, 0x08, 0x08, 0x00, 0x00, 0x80, 0xC3 };

OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass the oneWire reference to Dallas Temperature.
int numSensors = 0;
int lastTemperature[MAX_ATTACHED_DS18B20] = { -100, -100, -100 };
int16_t conversionTime;
unsigned long previousTempMillis = -1;
static unsigned long nowms = millis();    // update at start of loop()


// define LCD module
TM1638 ledModule(8, 9, 7);

int displayInfo = -1;
unsigned long previousDisplayMillis = 0;

int targetTemp = START_TARGET_TEMP;
#ifdef SIMULATION
bool powerOn = true;
#ifndef NO_AC_DETECT
bool powerOnBuderus = true;
#endif
#else
bool powerOn = false;
#ifndef NO_AC_DETECT
bool powerOnBuderus = false;
#endif
#endif
bool resetMischer = true; // mischer zuerst in Nullstellung

#ifndef NO_AC_DETECT
bool testStateBuderus = false;
unsigned long lastResetBuderus = -1;
#endif

#ifndef NO_MYS
// Initialize messages
MyMessage msgTemp(0, V_TEMP);
MyMessage msgStatus(0, V_STATUS);
MyMessage msgTargetTemp(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS, V_HVAC_SETPOINT_HEAT);
MyMessage msgPower(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 1, V_STATUS);
#ifndef NO_AC_DETECT
MyMessage msgPowerBuderus(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 2, V_STATUS);
#endif
MyMessage msgDebug(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 3, V_TEXT);
#endif

// the setup function runs once when you press reset or power the board
void setup() {
  DEBUG_PRINTLN(F("Starte setup"));
  wdt_enable(WDTO_8S);
  Serial.begin(115200);

#ifndef NO_RTC
  // the function to get the time from the RTC
  setSyncProvider(RTC.get);
#endif
#ifndef NO_MYS
  // Request latest time from controller at startup
  requestTime();
#endif




  // Zieltemperatur aus EERPOM lesem:
  targetTemp = EEPROM.read(EEPROM_TARGET_TEMP);
  if ((targetTemp < 30) || (targetTemp > MAX_TEMP)) {
    targetTemp = START_TARGET_TEMP;
    EEPROM.write(EEPROM_TARGET_TEMP, targetTemp);
  }

  int state = EEPROM.read(EEPROM_POWERSTATE);
  if (state == 0) {
    powerOn = false;
  }
  else powerOn = true;

#ifndef NO_AC_DETECT
  // Buderuserkennung auf PIN3
  attachInterrupt(digitalPinToInterrupt(BUDERUS_PIN), buderusSet, CHANGE);
  testStateBuderus = false;
  lastResetBuderus = millis();
#ifndef NO_MYS
  send(msgPowerBuderus.set(powerOnBuderus));
#endif
#endif

  // Relayausgänge initialisiern
  for (int sensor = 1, pin = RELAY_1; sensor <= NUMBER_OF_RELAYS; sensor++, pin++) {
    // Then set relay pins in output mode
    pinMode(pin, OUTPUT);
    // Set relay to last known state (using eeprom storage)
    digitalWrite(pin, RELAY_OFF);
  }

  // Dallas Temperatursensoren
  sensors.begin();
  sensors.setWaitForConversion(false);
  numSensors = sensors.getDeviceCount();
  DEBUG_PRINT(F("Dallas Sensoren "));
  DEBUG_PRINTLN(numSensors);
  DeviceAddress tempDeviceAddress; // We'll use this variable to store a found device address

  for (int i = 0; i < numSensors; i++)
  {
    wdt_reset();
    // Search the wire for address
    if (sensors.getAddress(tempDeviceAddress, i))
    {
      DEBUG_PRINT(F("Found device "));
#ifdef EN_DEBUG
      Serial.print(i, DEC);
#endif
      DEBUG_PRINT(F(" with address: "));
      printAddress(tempDeviceAddress);
      DEBUG_PRINTLN();

      DEBUG_PRINT(F("Setting resolution to "));
#ifdef EN_DEBUG
      Serial.println(TEMPERATURE_PRECISION, DEC);
#endif
      // set the resolution to 12 bit (Each Dallas/Maxim device is capable of several different resolutions)
      sensors.setResolution(tempDeviceAddress, TEMPERATURE_PRECISION);

      DEBUG_PRINT(F("Resolution actually set to: "));

#ifdef EN_DEBUG
      Serial.print(sensors.getResolution(tempDeviceAddress), DEC);
#endif
      DEBUG_PRINTLN();
    } else {
      DEBUG_PRINT(F("Found ghost device at "));

#ifdef EN_DEBUG
      Serial.print(i, DEC);
#endif
      DEBUG_PRINT(F(" but could not detect address. Check power and cabling"));
    }
  }

  wdt_reset();
  sensors.requestTemperatures();

  // query conversion time and sleep until conversion completed
  conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
}

/*****************************************************/
// the loop function runs over and over again forever
void loop() {
  nowms = millis();

#ifndef NO_MYS
  // If no time has been received yet, request it every 10 second from controller
  // When time has been received, request update every hour
  if ((!timeReceived && (nowms - lastRequest) > (10UL * 1000UL))
      || (timeReceived && (nowms - lastRequest) > (60UL * 1000UL * 60UL))) {
    // Request time from controller.
    DEBUG_PRINTLN("requesting time");
    requestTime();
    lastRequest = nowms;
  }
#endif

  wdt_reset();

#ifndef NO_AC_DETECT
  readAC();
#endif

  readTemp();
  readButtons();

  updateDisp();

  // Temperaturen senden

#ifndef NO_MYS
  sendTemp();
#endif

  // Kontroller
  control();

  // Loop 2x pro Sekunde ist aureichend
  unsigned long loopTime = millis() - nowms;
  if (loopTime < 450) {
#ifdef NO_MYS
    delay (500 - loopTime);
#else
    wait (500 - loopTime);
#endif
  }
}
// end loop

/**************************************************************/
// Steuerung
void control()
{

  wdt_reset();

  static unsigned long lastPumpTest = 0;
  static unsigned long lastRegulation = -REGULATION_TIMEOUT_PUMP;
  static unsigned long resetStart = 0;                     // wann wurde die Rücksetzung des Mischers gestartet
  static bool lastPower = powerOn;
  static float moveSeconds = 0.0;                 // Zeiten für Stellmotor Mischer

  // controllerState
  // 0 initialized
  // 1 Pumpe für kurzen test aktiviert, warten auf Timeout für Deaktivierung
  // 2 in der Regelung, warten auf Timeout für Deaktivierung
  // 3 in Ausganglage fahren

  static int controllerState = 0;

  // Emergency
  if  (lastTemperature[VORLAUF] > MAX_TEMP) {
    if (resetStart == 0) {
      if (relState[PUMPE]) {
        DEBUG_PRINT(F("Zu heiss. Emergency Mischer schliessen"));
        DEBUG_PRINTLN(lastTemperature[VORLAUF]);
      }
      closeMischer();
      controllerState = 0;
      return;
    }
  }


  // Temperatur noch nicht gelesen;
  if (lastTemperature[VORLAUF] == -100) return;

  // Fehler mit den Sensoren
  if ((lastTemperature[VORLAUF] < 0) ||
      (lastTemperature[VORLAUF] > 100) ||
      (lastTemperature[RUECKLAUF] < 0) ||
      (lastTemperature[RUECKLAUF] > 100) ||
      (lastTemperature[ZULAUF] < 0) ||
      (lastTemperature[ZULAUF] > 100)) {
    relState[PUMPE] = false;
    updateRelays();
    ledState[PUMPE] = relState[PUMPE];
    // Test
    //powerOn = false;
#ifndef NO_MYS
    //send(msgPower.set(powerOn));
#endif

    controllerState = 0;
    DEBUG_PRINTLN(F("Fehler mit den Sensoren, Temperaturen unter 0 oder über 100. Poweroff!"));
    return;
  }

  if (resetMischer) {
    DEBUG_PRINTLN(F("Mischer initialisieren"));
    closeMischer();
    resetStart = millis();
    resetMischer = false;
    controllerState = 0;
    return;
  }

  if (resetStart > 0) {
    if ((millis() - resetStart) > MISCHER_RESET_TIME) {
      DEBUG_PRINTLN(F("Mischer fertig initialisiert"));
      relState[MISCHER_ZU] = false;
      updateRelays();
      ledState[PUMPE] = relState[PUMPE];
      ledState[MISCHER_ZU] = relState[MISCHER_ZU];
      resetStart = 0;
      controllerState = 0;
    }
    return;
  }

  // wenn ausser Betrieb -> verlassen;
  if (powerOn == false) {
    if (lastPower == false) return;

    DEBUG_PRINTLN("Go to power off state");

#ifndef NO_MYS
    send(msgPower.set(powerOn));
#endif

    lastPower = false;
    relState[PUMPE] = false;
    relState[MISCHER_ZU] = false;
    relState[MISCHER_AUF] = false;
    updateRelays();
    ledState[PUMPE] = relState[PUMPE];
    ledState[MISCHER_ZU] = relState[MISCHER_ZU];
    ledState[MISCHER_AUF] = relState[MISCHER_AUF];
    controllerState = 0;
    EEPROM.write(EEPROM_POWERSTATE, 0);
    return;
  }
  //DEBUG_PRINTLN("a");
  lastPower = true;

  switch (controllerState) {
    case  0:  // Initialisiert
      if (lastTemperature[ZULAUF] < 30) {
        if ((millis() - lastPumpTest) > RETRY_TIMEOUT_PUMP) {
          controllerState = 1;
          lastPumpTest = millis();
          DEBUG_PRINTLN(F("Zulauf zu kalt. Schalte Pumpe für 5 Sekunden ein."));
          relState[PUMPE] = true;
          updateRelays();
          ledState[PUMPE] = relState[PUMPE];
        }
        return;
      }
      //DEBUG_PRINTLN("x");

      relState[PUMPE] = true;
      updateRelays();
      ledState[PUMPE] = relState[PUMPE];


      // nicht regulieren, wenn schon genau genug
      if (abs(lastTemperature[VORLAUF] - targetTemp) <= 1) {
        // DEBUG_PRINTLN("diff zu klein, keine Steuerung notwendig");
        return;
      }


      if ((millis() - lastRegulation) > REGULATION_TIMEOUT_PUMP) {
        controllerState = 2;
        lastRegulation = millis();

        int diffZualaufRuecklauf = lastTemperature[ZULAUF] - lastTemperature[RUECKLAUF];

        float actPercent = (float)(lastTemperature[VORLAUF] - lastTemperature[RUECKLAUF]) * 100.0 / (float)diffZualaufRuecklauf;
        float shoulPercent = (float)(targetTemp - lastTemperature[RUECKLAUF]) * 100.0 / (float)diffZualaufRuecklauf;

        // 120 Sekunden für ganzen Weg
        moveSeconds = (float)MISCHER_RESET_TIME / 1000.0 / 100.0 * abs(shoulPercent - actPercent);
        DEBUG_PRINT(F("Berechnete Sekunden fuer Mischerumstellung "));
        DEBUG_PRINTLN(moveSeconds);
        if (moveSeconds > 8)
          moveSeconds = 8;

        if (targetTemp > lastTemperature[VORLAUF]) {
          DEBUG_PRINTLN(F("Mischer auf"));
          relState[MISCHER_ZU] = false;
          relState[MISCHER_AUF] = true;
          updateRelays();
          ledState[MISCHER_ZU] = relState[MISCHER_ZU];
          ledState[MISCHER_AUF] = relState[MISCHER_AUF];
        }
        else
        {
          DEBUG_PRINTLN(F("Mischer zu"));
          relState[MISCHER_ZU] = true;
          relState[MISCHER_AUF] = false;
          updateRelays();
          ledState[MISCHER_ZU] = relState[MISCHER_ZU];
          ledState[MISCHER_AUF] = relState[MISCHER_AUF];
        }
        return;
      }
      return;
      break;
    case  1: // in Testmodus bei zu wenig  Temp im Zulauf
      if ((millis() - lastPumpTest) > PROBE_TIMEOUT_PUMP) {
        relState[PUMPE] = false;
        updateRelays();
        ledState[PUMPE] = relState[PUMPE];
        DEBUG_PRINTLN(F("Pumpe ausgeschaltet"));
        controllerState = 0;
        lastPumpTest = millis();
      }
      return;
      break;
    case  2: // in der Regelung
      if ((millis() - lastRegulation) > moveSeconds * 1000.0) {
        DEBUG_PRINTLN("Mischer zu.");
        relState[MISCHER_ZU] = false;
        relState[MISCHER_AUF] = false;
        updateRelays();
        ledState[MISCHER_ZU] = relState[MISCHER_ZU];
        ledState[MISCHER_AUF] = relState[MISCHER_AUF];
        lastRegulation = millis();
        controllerState = 0;
      }
      return;
      break;
    default:
      DEBUG_PRINT(F("ERROR, unknown state :"));
      DEBUG_PRINTLN(controllerState);
      controllerState = 0;
      return;
  }
}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    if (deviceAddress[i] < 16) DEBUG_PRINT("0");

#ifdef EN_DEBUG
    Serial.print(deviceAddress[i], HEX);
#endif
  }
}

void updateRelays() {
  static boolean relayStateReported[8] = { false, false, false, false, false, false, false, false };
#ifndef NO_MYS
  static unsigned long previousStateMillis[NUMBER_OF_RELAYS] = { 0, 0, 0, 0 };
#endif

  for (int i = 0; i < NUMBER_OF_RELAYS; i++) {
    if (relState[i]) {
      digitalWrite(RELAY_1 + i, RELAY_ON);
    }
    else
    {
      digitalWrite(RELAY_1 + i, RELAY_OFF);
    }

#ifndef NO_MYS
    bool bSend = false;
    if (previousStateMillis[i] == 0) {                               // noch nie gesendet
      bSend = true;
    }
    else if (relayStateReported[i] != relState[i] ) { // Änderungen melden
      bSend = true;
    }
    else if ((millis() - previousStateMillis[i]) > MIN_REPORT_INTERVAL) {
      bSend = true;
    }

    if (bSend) {
      // TODO: Check if we want to look at the return value of send
      send(msgStatus.setSensor(i + MAX_ATTACHED_DS18B20).set(relState[i] ? 1 : 0));
      previousStateMillis[i] = millis();
      relayStateReported[i] = relState[i];
    }
#endif
  }
}

void updateDisp() {
  static char s[8];
  static unsigned long previousDisplayMillis = 0;

  // update display?
  if ((millis() - previousDisplayMillis) > 1000) {
    previousDisplayMillis = millis();
    displayInfo++;
#ifdef NO_MYS
    if (displayInfo > 4) displayInfo = 0;
#else
    if (displayInfo > 5) displayInfo = 0;
#endif



    ledModule.clearDisplay();
    // sind die Temperaturen schon gelesen worden? Wenn nicht, abbrechen.
    if (lastTemperature[0] == -100) return;

    for (byte i = 0; i <= 7; i++) {
      if (ledState[i])
        ledModule.setLED(1, i);
      else
        ledModule.setLED(0, i);
    }

    // 0 Vorlauf, 1 Rücklauf, 2 Zulauf, 3 Sollwert
    switch (displayInfo) {
      case 0: // Vorlauf
        sprintf(s, "Vor %2i",  lastTemperature[VORLAUF]);
        break;
      case 1: // Rücklauf
        sprintf(s, "Rue %2i",  lastTemperature[RUECKLAUF]);
        break;
      case 2: // Zulauf
        sprintf(s, "Zu %2i",  lastTemperature[ZULAUF]);
        break;
      case 3: // Zielwert
        sprintf(s, "Soll %2i",  targetTemp);
        break;
      case 4: // Power
        if (powerOn) {
          sprintf(s, "PowerOn");
        }
        else {
          sprintf(s, "PowerOff");
        }
        break;
#ifndef NO_MYS
      case 5: //clock
        TimeChangeRule *tcr;
        time_t utc = millis();
        time_t t = CE.toLocal(utc, &tcr);
        unsigned long dispTime = hour(t) * 100 * 100 + minute(t) * 100 + second(t);
        if (hour(t) < 10) {
          sprintf(s, "U 0%lu",  dispTime);
        }
        else
        {
          sprintf(s, "U %lu",  dispTime);
        }
        break;
#endif
    }

    ledModule.setDisplayToString(s);
  }
}

void closeMischer() {
  relState[PUMPE] = false;
  relState[MISCHER_ZU] = true;
  relState[MISCHER_AUF] = false;
  updateRelays();
  ledState[PUMPE] = relState[PUMPE];
  ledState[MISCHER_ZU] = relState[MISCHER_ZU];
  ledState[MISCHER_AUF] = relState[MISCHER_AUF];
}


#ifndef NO_MYS

void before()
{

}

// 0 Vorlauf, 1 Rücklauf, 2 Zulauf
void presentation() {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Mischer Node", "1.1");

  // Fetch the number of attached temperature sensors
  numSensors = sensors.getDeviceCount();
  DEBUG_PRINT(F("Numsensors "));
  DEBUG_PRINTLN(numSensors);

  // Present all sensors to controller
  for (int i = 0; i < numSensors && i < MAX_ATTACHED_DS18B20; i++) {
    present(i, S_TEMP);
  }

  for (int sensor = MAX_ATTACHED_DS18B20, pin = RELAY_1; sensor < (MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS); sensor++, pin++) {
    // Register all sensors to gw (they will be created as child devices)
    present(sensor, S_BINARY);
  }

  // Thermopunkt
  present(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS, S_HVAC);

  // Power
  present(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 1, S_HEATER);

#ifndef NO_AC_DETECT
  // AC Buderuus
  present(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 2, S_BINATY);
#endif

  // Power
  present(MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 3, S_INFO);

  // Initialltemperatur mitteilen
  send(msgTargetTemp.set(targetTemp));
  send(msgPower.set(powerOn));
}


void receive(const MyMessage & message)
{
  DEBUG_PRINT(F("Meldung an Sensor "));
  DEBUG_PRINT(message.sensor);
  DEBUG_PRINT(F(" mit type "));
  DEBUG_PRINTLN(message.type);
  if (message.type == V_STATUS) {
    int i = message.sensor - MAX_ATTACHED_DS18B20;
    if ((i >= 0) && (i < NUMBER_OF_RELAYS)) {
      DEBUG_PRINT(F("Schaltbefehl für Relay "));
      DEBUG_PRINT(i);
      DEBUG_PRINT(F(" auf "));
      DEBUG_PRINTLN(message.getBool());
      relState[i] = message.getBool();
      ledState[i] = relState[i];
    }
    else if (i == MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS + 1) {
      powerOn = message.getBool();
      send(msgPower.set(powerOn));

      if (powerOn)
        EEPROM.write(EEPROM_POWERSTATE, 1);
      else
        EEPROM.write(EEPROM_POWERSTATE, 0);

      if (powerOn == false) {
        relState[PUMPE] = false;
        ledState[POWERLED] = false;
        DEBUG_PRINTLN(F("Befehl für PowerOff"));
      }
      else {
        ledState[POWERLED] = true;
        DEBUG_PRINTLN(F("Befehl für PowerOn"));
      }
    }

    updateRelays();
  }
  else if (message.type == V_HVAC_SETPOINT_HEAT) {
    if (message.sensor == (MAX_ATTACHED_DS18B20 + NUMBER_OF_RELAYS)) {
      targetTemp = message.getInt();
      DEBUG_PRINT(F("Zieltemp gesetzt auf "));
      DEBUG_PRINTLN(targetTemp);
      if (targetTemp > MAX_TEMP) targetTemp = START_TARGET_TEMP;
      if (targetTemp < 20) targetTemp = 20;
      send(msgTargetTemp.set(targetTemp));
    }
  }
}

// This is called when a new time value was received
void receiveTime(unsigned long controllerTime) {
  // Ok, set incoming time
  DEBUG_PRINT(F("Time value received: "));
  DEBUG_PRINTLN(controllerTime);
#ifndef NO_RTC
  RTC.set(controllerTime);
  else
    setTime(controllerTime);
#endif
  timeReceived = true;
}

void sendTemp() {
  static int lastSentTemperature[MAX_ATTACHED_DS18B20] = { -100, -100, -100 };
  static unsigned long previousTempMillis[MAX_ATTACHED_DS18B20] = { 0, 0, 0 };

  for (int i = 0; i < MAX_ATTACHED_DS18B20 ; i++) {
    if (lastTemperature[i] != -100) {
      bool bSend = false;
      if (previousTempMillis[i] == 0) {                               // noch nie gesendet
        bSend = true;
      }
      else if (abs(lastSentTemperature[i] - lastTemperature[i]) >= 2) { // Differenz von >= zwei Grad werden gemeldet
        bSend = true;
      }
      else if ((millis() - previousTempMillis[i]) > MIN_REPORT_INTERVAL) {
        bSend = true;
      }

      if (bSend) {
        // TODO: Check if we want to look at the return value of send
        send(msgTemp.setSensor(i).set(lastTemperature[i], 1));
        previousTempMillis[i] = millis();
        lastSentTemperature[i] = lastTemperature[i];
      }
    }
  }
}
#endif

#ifndef NO_AC_DETECT
void buderusSet() {
  testStateBuderus = true;
}
#endif

void reboot() {
  wdt_enable(WDTO_30MS);
  while (1) {};
}

void readButtons() {

  byte buttons = ledModule.getButtons();

  if (lastButtonState != buttons) {
    lastButtonState = buttons;
    if (buttons > 0) {
      for (byte i = 0; i <= 7; i++) {
        if ((buttons >> i) & 1) {
          ledState[i] = !ledState[i];
          if (i < NUMBER_OF_RELAYS) relState[i] = ledState[i];
          updateRelays();
          if (ledState[i])
            ledModule.setLED(1, i);
          else
            ledModule.setLED(0, i);
          if (i == POWERLED) {
            powerOn = ledState[i];
#ifndef NO_MYS
            send(msgPower.set(powerOn));
#endif
            if (powerOn)
              EEPROM.write(EEPROM_POWERSTATE, 1);
            else
              EEPROM.write(EEPROM_POWERSTATE, 0);

          }

          if (i == TEMPDOWNLED) {
            targetTemp--;
            if (targetTemp < 30) targetTemp = 30;
            EEPROM.write(EEPROM_TARGET_TEMP, targetTemp);
          }
          if (i == TEMPUPLED) {
            targetTemp++;
            if (targetTemp > MAX_TEMP) targetTemp = MAX_TEMP;
            EEPROM.write(EEPROM_TARGET_TEMP, targetTemp);
          }
          DEBUG_PRINT(F("ButtonState changed "));
          DEBUG_PRINTLN(i);
        }
      }
    }
  }
}

void readTemp() {
  static float temp;
  static int tempi;
  static unsigned long lastReadTemp1 = -1;
  static unsigned long lastReadTemp2 = -1;
  static unsigned long lastReadTemp3 = -1;

  if (previousTempMillis == -1) {
    // Dallas
    sensors.requestTemperatures();
    previousTempMillis = nowms;
  }

  if ((millis() - previousTempMillis) >= conversionTime) {
    temp = sensors.getTempC(Probe01);
    if (temp != DEVICE_DISCONNECTED_C) {
      tempi = (int)(temp + 0.5);
      lastTemperature[VORLAUF] = tempi;
      lastReadTemp1 = nowms;
    }

    if (temp != DEVICE_DISCONNECTED_C) {
      temp = sensors.getTempC(Probe02);
      tempi = (int)(temp + 0.5);
      lastTemperature[RUECKLAUF] = tempi;
      lastReadTemp2 = nowms;
    }

    if (temp != DEVICE_DISCONNECTED_C) {
      temp = sensors.getTempC(Probe03);
      tempi = (int)(temp + 0.5);
      lastTemperature[ZULAUF] = tempi;
      lastReadTemp3 = nowms;
    }

    if (nowms > 60000) {    // ersta nach einer minute prüfen
      unsigned long compare = nowms - 60000; // vor 1 Minute
      if ((lastReadTemp1 < compare) || (lastReadTemp2 < compare) || (lastReadTemp3 < compare)) {
        DEBUG_PRINTLN(F("Zu lange keine Temeratur -> reset"));
        lastReadTemp1 = -1;
        lastReadTemp2 = -1;
        lastReadTemp3 = -1;
        ledModule.setDisplayToString(F("ERR Reb"));
        delay(1000);
        reboot();
      }
    }

    previousTempMillis = -1;
  }

#ifdef SIMULATE_VOR
  lastTemperature[VORLAUF] = SIMULATE_VOR;
  lastReadTemp1 = nowms;
#endif

#ifdef SIMULATE_RUE
  lastTemperature[RUECKLAUF] = SIMULATE_RUE;
  lastReadTemp3 = nowms;
#endif

#ifdef SIMULATE_ZU
  lastTemperature[ZULAUF] = SIMULATE_ZU;
  lastReadTemp3 = nowms;
#endif
}

#ifndef NO_AC_DETECT

void readAC() {
  if ((millis() - lastResetBuderus) > 100) // bei 50 HZ sind das 25 Durchgänge...
  {
    noInterrupts();
    if (testStateBuderus != powerOnBuderus ) {
      powerOnBuderus = testStateBuderus;
      testStateBuderus = false;
      interrupts();
      ledState[BUDERUSLED] = powerOnBuderus;
#ifndef NO_MYS
      send(msgPowerBuderus.set(powerOnBuderus));
#endif
    }
    lastResetBuderus = nowms;
    testStateBuderus = false;
  } else
    interrupts();
}
#endif

[raptorjr]

@FotoFieber

That was very advanced =) I don't have any high voltage involved. Only have a test setup on a breadboard.

I tried to move the sensors.begin to the setup, but then I don't get any temperature readings?

[gohan]

Try post your code so we can take a look. Did you cross check the hw yet?

[raptorjr]

@gohan

It is the same sketch as my second post.

Haven't done anything with the hardware yet. Was following Fabiens advice with using 2.1 on both sketch and gateway. And restart gateway with problem. And then test again and restart node when the problem occurs.

[Darren McInnes]

You may want to check which version of the onewire library you are running. I was having exactly the same issue and fixed it by upgrading the onewire library from 2.7.2 (I think?) To the latest version.

It's been a few weeks now with no crashes.

[raptorjr]

@Darren-McInnes said:

You may want to check which version of the onewire library you are running. I was having exactly the same issue and fixed it by upgrading the onewire library from 2.7.2 (I think?) To the latest version.

It's been a few weeks now with no crashes.

In the Arduino IDE version 2.3.2 seems to be the latest. But is there a newer one that I can download and install?

Maybe should figure out why I don't get any sensor readings when I have sensors.begin() in the setup. Maybe that is a problem also that I have it in the loop()?

[Darren McInnes]

Sorry i meant the dallastemperature library!

i'm running 3.7.5 now without issues but had problems after a day with 3.7.2

my ide version is 1.6.9 and onewire version 2.3.2

[raptorjr]

@Darren-McInnes

I have 3.7.6 installed. On thing might just be updated libraries. I have been using Visual Studio for development with the plugin from Visual Micro. But then the libraries don't get updated. Had some problems with a update from Visual Micro so I went back to the Arduino IDE.
Have been running since Monday now. Although it could take more than a week before any problem, but I'm keeping my fingers crossed.

[gohan]

@raptorjr
I am also using visual studio but libraries and boards get updated through the arduino ide without problems

[raptorjr]

@gohan

But if you never open the Arduino IDE it can't get updated? Or are you saying that they get updated through Visual Studio?

I hadn't used the IDE for several months. Thought I was a step closer to the problem and that it was bugs in older libraries.

[gohan]

@raptorjr

Visual Studio uses libraries from Arduino ide, so the only way to get updates is through the Arduino ide unless you install libraries manually. So it's a good thing to open Arduino ide every now and then if you want updates