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- float tmpHum, tmpTemp;
- int DHTreadRetries = 2;
- //int DHTreadDelay = 20;
- void readDHTsensorTemp() {
- //delay(DHTreadDelay);
- tmpTemp = dht.readTemperature(); // Read temperature as Celsius (the default)
- }
- void readDHTsensorHum() {
- //delay(DHTreadDelay);
- tmpHum = dht.readHumidity();
- }
- void measureTempHum() {
-
- for(int i=0; i < DHTreadRetries; i++) {
- readDHTsensorTemp();
- if(!isnan(tmpTemp)) {
- sendStatus("DHT reading Temp OK");
- i=DHTreadRetries;
- }
- //else {
- // sendStatus("DHT reading Temp failed - retrying..");
- //}
- }
- for(int i=0; i < DHTreadRetries; i++) {
- readDHTsensorHum();
- if(!isnan(tmpHum)) {
- sendStatus("DHT reading Hum OK");
- i=DHTreadRetries;
- }
- //else {
- // sendStatus("DHT reading Hum failed - retrying..");
- //}
- }
- // Check if any reads failed
- if (isnan(tmpHum) || isnan(tmpTemp)) {
- //Serial.println("Failed to read from DHT sensor!");
- sendStatus("Error: Failed to read from DHT sensor!");
- }
- else {
- tmpTemp = tmpTemp + tempCorrVal;
- tmpHum = round(tmpHum) + humCorrVal;
- int tmpHumInt = tmpHum;
- if (tmpTemp < 50.0 && tmpTemp > -20.0) {
- // measurement is in range
- currTemp_raw = tmpTemp;
- currHum_raw = tmpHumInt;
- if ( lastTempUpdate > 0 && tmpTemp <= ( currTemp + 2.0 ) && tmpTemp >= ( currTemp - 2.0 ) ) {
- // temp has already been measured - only accept new measurement if it does not differ much from the last value
- //Temp = (Temp * (FilterFaktor -1) + AktuellerMesswert) / FilterFaktor;
- //temperature = tmpTemp;
- currTemp = (currTemp * 9 + tmpTemp) / 10; // filter
- currHum = (currHum * 9 + tmpHumInt) / 10; // filter
- lastTempUpdate = millis();
- }
- else if ( lastTempUpdate == 0 || (millis() - lastTempUpdate) > maxMeasurementAge ) {
- // this is the first measurement or the last one is older than 5m - then accept this measurement
- currTemp = tmpTemp + tempCorrVal;
- currHum = tmpHumInt + humCorrVal;
- lastTempUpdate = millis();
- }
- // skip in all other cases
- //#ifdef DEBUG_VERBOSE
- // Serial.print("lastTempUpdate: ");
- // long lastTempUpdateDelta = millis() - lastTempUpdate;
- // Serial.print(lastTempUpdateDelta / 1000);
- // Serial.println("s ago");
- //#endif
- }
- }
- }
- void updateCurrSetTemp() {
- // set target temp for heating mode
- if (heatingMode > 0) { // heating on
- if (preset == 0) { // normal/day preset
- currSetTemp = setTemp;
- }
- else if (preset == 1) { // night/reduction preset
- currSetTemp = setTempLow;
- }
- else if (preset == 2) { // night/reduction 2 preset
- currSetTemp = setTempLow2;
- }
- }
- else { // if heatingMode == 0
- currSetTemp = DEFAULT_SETTEMP_HEATOFF;
- }
- }
- void thermostat() {
- updateCurrSetTemp();
- char tmp_topic_out[50];
- if (heatingMode > 0 && turnHeatingOn) {
- heatingOnTime = (millis() - heatingLastOnMillis) / 1000;
- char buf[101];
- sprintf(buf, "heating on since %d s", heatingOnTime);
- sendStatus(buf);
- }
- else if (heatingMode > 0 && !turnHeatingOn) {
- heatingOffTime = (millis() - heatingLastOffMillis) / 1000;
- char buf[101];
- sprintf(buf, "heating off since %d s", heatingOffTime);
- sendStatus(buf);
- }
- //char tmp_topic_out[50];
- //sprintf(tmp_topic_out, "%s/%s", mqtt_topic_out, "heating");
- if ( lastTempUpdate != 0 && (millis() - lastTempUpdate) <= maxMeasurementAge ) {
- // thermostat - only active if measured temperature is < 2 min old
- #ifdef DEBUG_VERBOSE
- Serial.print("thermostat, lastTempUpdate=");
- Serial.print(lastTempUpdate);
- Serial.print(", lastTempUpdate_delta=");
- long lastTempUpdateDelta = millis() - lastTempUpdate;
- Serial.println(lastTempUpdateDelta);
- #endif
- // thermostat with hysteresis
- if ( turnHeatingOn && currTemp >= (currSetTemp - setTempDecreaseVal) ) {
- turnHeatingOn = false;
- heatingLastOffMillis = millis();
- digitalWrite(PIN_RELAIS, !RELAISONSTATE);
- updateDisplay();
- char buf[101];
- sprintf(buf, "switch heating OFF, on since %d s", heatingOnTime);
- sendStatus(buf);
- //Serial.println("heating off");
- //mqttclient.publish(tmp_topic_out, "off");
- publishCurrentThermostatValues();
- sendToDomoticz_Heating();
- }
- else if ( !turnHeatingOn && heatingMode > 0 && ( currTemp < (currSetTemp - setTempDecreaseVal - hysteresis) ) && ( heatingOffTime > heatingMinOffTime ) ) {
- turnHeatingOn = true;
- heatingLastOnMillis = millis();
- digitalWrite(PIN_RELAIS, RELAISONSTATE);
- updateDisplay();
- char buf[101];
- sprintf(buf, "switch heating ON, off since %d s", heatingOffTime);
- sendStatus(buf);
- //Serial.println("heating on");
- //mqttclient.publish(tmp_topic_out, "on");
- publishCurrentThermostatValues();
- sendToDomoticz_Heating();
- }
- }
- else {
- if (turnHeatingOn) {
- digitalWrite(PIN_RELAIS, !RELAISONSTATE);
- turnHeatingOn = false;
- heatingLastOffMillis = millis();
- }
-
- if ( lastTempUpdate != 0 ) sendStatus("switch heating OFF, temp reading not yet available");
- else if ( (millis() - lastTempUpdate) > maxMeasurementAge ) sendStatus("switch heating OFF, last temp reading too old");
-
- //mqttclient.publish(tmp_topic_out, "off");
- publishCurrentThermostatValues();
- sendToDomoticz_Heating();
- }
- }
- void toggleOnOff() {
- if (heatingMode > 0) {
- heatingMode = 0;
- lastValueChange = millis();
- heatingModeAlreadySaved = false;
- }
- else {
- heatingMode = 1;
- lastValueChange = millis();
- heatingModeAlreadySaved = false;
- }
- updateCurrentHeatingModeName();
- updateDisplay();
- }
- void togglePreset() {
- Serial.print("switch preset to ");
- if (pendingPreset < 0 || pendingPreset > 2) pendingPreset = preset;
- // if (pendingPresetToggle && preset == 0 && pendingPreset == 0) pendingPreset = 1;
- // else if (pendingPresetToggle && preset == 1 && pendingPreset == 1) pendingPreset = 0;
- // else if (pendingPreset == 1 && pendingPresetToggle) pendingPreset = 2;
- // else if (pendingPreset == 2 && !pendingPresetToggle) pendingPreset = 0;
- // else if (pendingPreset == 2 && pendingPresetToggle) pendingPreset = 1;
- if (pendingPreset == 0) pendingPreset = 1;
- else if (pendingPreset == 1) pendingPreset = 2;
- else if (pendingPreset == 2) pendingPreset = 0;
- // if (preset == 0 && pendingPreset == 0) pendingPreset = 1;
- // else if (preset == 0 && pendingPreset == 1) pendingPreset = 2;
- // else if (preset == 1 && pendingPreset == 0) pendingPreset = 2;
- // else if (preset == 1 && pendingPreset == 1) pendingPreset = 0;
- // else if (preset == 1 && pendingPreset == 2) pendingPreset = 1;
- // else if (preset == 1 && pendingPreset == 0) pendingPreset = 1;
- // else if (preset == 2 && pendingPreset == 0) pendingPreset = 1;
- // else if (preset == 2 && pendingPreset == 1) pendingPreset = 0;
- // else if (preset == 2 && pendingPreset == 2) pendingPreset = 0;
- lastValueChange = millis();
- presetAlreadySaved = false;
- updatePendingPresetName();
- //updateDisplay();
- //pendingPresetToggle = true;
- displayShowLine2OverlayMessage(pendingPresetName);
- Serial.print(pendingPreset);
- Serial.print(" - \"");
- Serial.print(currentPresetName);
- Serial.println("\"");
- }
- void updateCurrentHeatingModeName() {
- if (heatingMode == 0) strlcpy(currentModeName, modename0, 14);
- else if (heatingMode == 1) strlcpy(currentModeName, modename1, 14);
- }
- void updateCurrentPresetName() {
- if (preset == 0) strlcpy(currentPresetName, psetname0, 14);
- else if (preset == 1) strlcpy(currentPresetName, psetname1, 14);
- else if (preset == 2) strlcpy(currentPresetName, psetname2, 14);
- }
- void updatePendingPresetName() {
- if (pendingPreset == 0) strlcpy(pendingPresetName, psetname0, 14);
- else if (pendingPreset == 1) strlcpy(pendingPresetName, psetname1, 14);
- else if (pendingPreset == 2) strlcpy(pendingPresetName, psetname2, 14);
- }
- void setTempStepUp() {
- if (heatingMode == 1) {
- Serial.println("setTemp +0.5");
- if ( setTemp <= (setTempMax - 0.5)) {
- setTemp += 0.5;
- lastValueChange = millis();
- setTempAlreadySaved = false;
- }
- updateDisplay();
- }
- }
- void setTempStepDown() {
- if (heatingMode == 1) {
- Serial.println("setTemp -0.5");
- if ( setTemp >= (setTempMin + 0.5)) {
- setTemp -= 0.5;
- lastValueChange = millis();
- setTempAlreadySaved = false;
- }
- updateDisplay();
- }
- }
- void setTempTo(float setTo) {
- boolean changes = false;
- if (setTo >= setTempMin && setTo <= setTempMax) {
- setTemp = setTo;
- changes = true;
- }
- else if (setTo > setTempMax) {
- setTemp = setTempMax;
- changes = true;
- }
- else if (setTo < setTempMin) {
- setTemp = setTempMin;
- changes = true;
- }
- if (changes) {
- lastValueChange = millis();
- setTempAlreadySaved = false;
- updateDisplay();
- publishCurrentThermostatValues();
- }
- }
- void setTempLowTo(float setTo) {
- boolean changes = false;
- if (setTo >= setTempLowMin && setTo <= setTempLowMax) {
- setTempLow = setTo;
- changes = true;
- }
- else if (setTo > setTempLowMax) {
- setTempLow = setTempLowMax;
- changes = true;
- }
- else if (setTo < setTempLowMin) {
- setTempLow = setTempLowMin;
- changes = true;
- }
- if (changes) {
- updateDisplay();
- publishCurrentThermostatValues();
- }
- }
- void setTempLow2To(float setTo) {
- boolean changes = false;
- if (setTo >= setTempLowMin && setTo <= setTempLowMax) {
- setTempLow2 = setTo;
- changes = true;
- }
- else if (setTo > setTempLowMax) {
- setTempLow2 = setTempLowMax;
- changes = true;
- }
- else if (setTo < setTempLowMin) {
- setTempLow2 = setTempLowMin;
- changes = true;
- }
- if (changes) {
- updateDisplay();
- publishCurrentThermostatValues();
- }
- }
- void setHeatingmodeTo(byte setTo) {
- boolean changes = false;
- switch (setTo) {
- case 0:
- heatingMode = 0;
- changes = true;
- break;
- case 1:
- heatingMode = 1;
- changes = true;
- break;
- }
- if (changes) {
- updateCurrSetTemp();
- lastValueChange = millis();
- heatingModeAlreadySaved = false;
- updateCurrentHeatingModeName();
- updateDisplay();
- publishCurrentThermostatValues();
- }
- }
- void setPresetTo(byte setTo) {
- boolean changes = false;
- switch (setTo) {
- case 0:
- preset = 0;
- pendingPreset = 0;
- changes = true;
- break;
- case 1:
- preset = 1;
- pendingPreset = 1;
- changes = true;
- break;
- case 2:
- preset = 2;
- pendingPreset = 2;
- changes = true;
- break;
- }
- if (changes) {
- updateCurrSetTemp();
- lastValueChange = millis();
- presetAlreadySaved = false;
- updateCurrentPresetName();
- updateDisplay();
- publishCurrentThermostatValues();
- }
- }
- void checkValuesChanged() { // called every second by everySecond() / misc.ino
- if ( !setTempAlreadySaved || !heatingModeAlreadySaved || !presetAlreadySaved) {
- if ( (millis() - lastValueChange) > saveValuesTimeout ) { // value was changed 5s ago. now save if auto-save enabled
- if (!setTempAlreadySaved) {
- lastUpdate_setTemp = millis();
- sendToDomoticz_thermostat();
- if (autoSaveSetTemp && setTemp != setTempSaved) {
- saveSetTemp();
- sendStatus("setTemp autosave done");
- }
- setTempAlreadySaved = true;
- }
- if (!heatingModeAlreadySaved) {
- lastUpdate_heatingMode = millis();
- sendToDomoticz_heatingMode();
- if (autoSaveHeatingMode && heatingMode != heatingModeSaved) {
- saveHeatingMode();
- sendStatus("heatingMode autosave done");
- }
- heatingModeAlreadySaved = true;
- }
- if (!presetAlreadySaved) {
- lastUpdate_preset = millis();
- //sendToDomoticz_heatingMode();
- preset = pendingPreset;
- if (autoSaveHeatingMode && preset != presetSaved) {
- savePreset();
- sendStatus("preset autosave done");
- }
- presetAlreadySaved = true;
- }
- publishCurrentThermostatValues();
- }
- }
- }
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