DHW control functions

Author: ihormelnyk

examples/OpenThermMaster_Demo/OpenThermMaster_Demo.ino

@@ -66,8 +66,15 @@ void loop()
     ot.setBoilerTemperature(64);
 
     //Get Boiler Temperature
-    float temperature = ot.getBoilerTemperature();
-    Serial.println("Boiler temperature is " + String(temperature) + " degrees C");
+    float ch_temperature = ot.getBoilerTemperature();
+    Serial.println("CH temperature is " + String(ch_temperature) + " degrees C");
+
+    //Set DHW setpoint to 40 degrees C
+    ot.setDHWSetpoint(40);
+
+    //Get DHW Temperature
+    float dhw_temperature = ot.getDHWTemperature();
+    Serial.println("DHW temperature is " + String(dhw_temperature) + " degrees C");
 
     Serial.println();
     delay(1000);

keywords.txt

@@ -30,6 +30,8 @@ doSomething	KEYWORD2
 setBoilerStatus	KEYWORD2
 setBoilerTemperature	KEYWORD2
 getBoilerTemperature	KEYWORD2
+setDHWSetpoint			KEYWORD2
+getDHWTemperature		KEYWORD2
 
 #######################################
 # Instances (KEYWORD2)

library.properties

@@ -1,5 +1,5 @@
 name=OpenTherm Library
-version=1.1.2
+version=1.1.3
 author=Ihor Melnyk <ihor.melnyk@gmail.com>
 maintainer=Ihor Melnyk <ihor.melnyk@gmail.com>
 sentence=OpenTherm Library for HVAC system control communication using Arduino and ESP8266 hardware.

src/OpenTherm.cpp

@@ -377,6 +377,17 @@ float OpenTherm::getReturnTemperature() {
     return isValidResponse(response) ? getFloat(response) : 0;
 }
 
+bool OpenTherm::setDHWSetpoint(float temperature) {
+    unsigned int data = temperatureToData(temperature);
+    unsigned long response = sendRequest(buildRequest(OpenThermMessageType::WRITE_DATA, OpenThermMessageID::TdhwSet, data));
+    return isValidResponse(response);
+}
+    
+float OpenTherm::getDHWTemperature() {
+    unsigned long response = sendRequest(buildRequest(OpenThermMessageType::READ_DATA, OpenThermMessageID::Tdhw, 0));
+    return isValidResponse(response) ? getFloat(response) : 0;
+}
+
 float OpenTherm::getModulation() {
     unsigned long response = sendRequest(buildRequest(OpenThermRequestType::READ, OpenThermMessageID::RelModLevel, 0));
     return isValidResponse(response) ? getFloat(response) : 0;

src/OpenTherm.h

@@ -157,6 +157,8 @@ class OpenTherm
 	bool setBoilerTemperature(float temperature);
 	float getBoilerTemperature();
     float getReturnTemperature();
+    bool setDHWSetpoint(float temperature);
+    float getDHWTemperature();
     float getModulation();
     float getPressure();
     unsigned char getFault();