RC20RF tap water one time loading function

src/ems-esp.cpp

@@ -592,6 +592,9 @@ void publishValues(bool force) {
 
     if (EMS_Boiler.wWActivated != EMS_VALUE_INT_NOTSET)
         rootBoiler["wWActivated"] = _bool_to_char(s, EMS_Boiler.wWActivated);
+    
+    if (EMS_Boiler.wWActivated != EMS_VALUE_INT_NOTSET)
+        rootBoiler["wWOnetime"] = _bool_to_char(s, EMS_Boiler.wWOneTime);
 
     if (EMS_Boiler.burnGas != EMS_VALUE_INT_NOTSET)
         rootBoiler["burnGas"] = _bool_to_char(s, EMS_Boiler.burnGas);
@@ -1506,8 +1509,9 @@ void MQTTCallback(unsigned int type, const char * topic, const char * message) {
         // this is used for example for comfort, flowtemp
         myESP.mqttSubscribe(TOPIC_BOILER_CMD);
 
-        // these two need to be unqiue topics
+        // these three need to be unqiue topics
         myESP.mqttSubscribe(TOPIC_BOILER_CMD_WWACTIVATED);
+        myESP.mqttSubscribe(TOPIC_BOILER_CMD_WWONETIME);
         myESP.mqttSubscribe(TOPIC_BOILER_CMD_WWTEMP);
 
         // generic incoming MQTT command for EMS-ESP
@@ -1621,6 +1625,16 @@ void MQTTCallback(unsigned int type, const char * topic, const char * message) {
         return;
     }
 
+    // wwOneTime
+    if (strcmp(topic, TOPIC_BOILER_CMD_WWONETIME) == 0) {
+        if (message[0] == '1' || strcmp(message, "on") == 0) {
+            ems_setWarmWaterOnetime(true);
+        } else if (message[0] == '0' || strcmp(message, "off") == 0) {
+            ems_setWarmWaterOnetime(false);
+        }
+        return;
+    }
+
     // boiler wwtemp changes
     if (strcmp(topic, TOPIC_BOILER_CMD_WWTEMP) == 0) {
         uint8_t t = atoi((char *)message);

src/ems.cpp

@@ -1292,6 +1292,28 @@ void _process_UBAMonitorWWMessage(_EMS_RxTelegram * EMS_RxTelegram) {
     EMS_Boiler.wWCurFlow = _toByte(9);
 }
 
+/**
+ * Activate / De-activate One Time warm water 0x35
+ * true = on, false = off
+ */
+void ems_setWarmWaterOnetime(bool activated) {
+    myDebug_P(PSTR("Setting boiler warm water OneTime loading %s"), activated ? "on" : "off");
+
+    _EMS_TxTelegram EMS_TxTelegram = EMS_TX_TELEGRAM_NEW; // create new Tx
+    EMS_TxTelegram.timestamp       = millis();            // set timestamp
+    EMS_Sys_Status.txRetryCount    = 0;                   // reset retry counter
+
+    EMS_TxTelegram.action        = EMS_TX_TELEGRAM_WRITE;
+    EMS_TxTelegram.dest          = EMS_Boiler.device_id;
+    EMS_TxTelegram.type          = EMS_TYPE_UBAFlags;
+    EMS_TxTelegram.offset        = EMS_OFFSET_UBAParameterWW_wwOneTime;
+    EMS_TxTelegram.length        = EMS_MIN_TELEGRAM_LENGTH;
+    EMS_TxTelegram.type_validate = EMS_ID_NONE;               // don't validate
+    EMS_TxTelegram.dataValue     = (activated ? 0x22 : 0x02); // 0x22 is on, 0x02 is off for RC20RF
+
+    EMS_TxQueue.push(EMS_TxTelegram);
+}
+
 /**
  * UBAMonitorFast - type 0x18 - central heating monitor part 1 (25 bytes long)
  * received every 10 seconds

src/ems.h

@@ -408,6 +408,7 @@ void ems_setThermostatMode(uint8_t mode, uint8_t hc);
 void ems_setWarmWaterTemp(uint8_t temperature);
 void ems_setFlowTemp(uint8_t temperature);
 void ems_setWarmWaterActivated(bool activated);
+void ems_setWarmWaterOnetime(bool activated);
 void ems_setWarmTapWaterActivated(bool activated);
 void ems_setPoll(bool b);
 void ems_setLogging(_EMS_SYS_LOGGING loglevel, bool silent = false);

src/ems_devices.h

@@ -26,6 +26,7 @@
 #define EMS_TYPE_UBAMaintenanceStatusMessage 0x1C // is an automatic monitor broadcast
 #define EMS_TYPE_UBAParameterWW 0x33
 #define EMS_TYPE_UBATotalUptimeMessage 0x14
+#define EMS_TYPE_UBAFlags 0x35
 #define EMS_TYPE_UBAMaintenanceSettingsMessage 0x15
 #define EMS_TYPE_UBAParametersMessage 0x16
 #define EMS_TYPE_UBASetPoints 0x1A
@@ -33,6 +34,7 @@
 
 #define EMS_OFFSET_UBAParameterWW_wwtemp 2                  // WW Temperature
 #define EMS_OFFSET_UBAParameterWW_wwactivated 1             // WW Activated
+#define EMS_OFFSET_UBAParameterWW_wwOneTime 5               // WW OneTime loading
 #define EMS_OFFSET_UBAParameterWW_wwComfort 9               // WW is in comfort or eco mode
 #define EMS_VALUE_UBAParameterWW_wwComfort_Hot 0x00         // the value for hot
 #define EMS_VALUE_UBAParameterWW_wwComfort_Eco 0xD8         // the value for eco

src/my_config.h

@@ -44,6 +44,7 @@
 
 #define TOPIC_BOILER_CMD "boiler_cmd"                         // for receiving boiler commands via MQTT
 #define TOPIC_BOILER_CMD_WWACTIVATED "boiler_cmd_wwactivated" // change water on/off
+#define TOPIC_BOILER_CMD_WWONETIME "boiler_cmd_wwonetime"     // warm warter one time loading
 #define TOPIC_BOILER_CMD_WWTEMP "boiler_cmd_wwtemp"           // wwtemp changes via MQTT
 #define TOPIC_BOILER_CMD_COMFORT "comfort"                    // ww comfort setting via MQTT
 #define TOPIC_BOILER_CMD_FLOWTEMP "flowtemp"                  // flowtemp value via MQTT