Option to change default payload for HA (#1085)

code/espurna/config/general.h

@@ -888,6 +888,14 @@
 #define HOMEASSISTANT_ENABLED   0               // Integration not enabled by default
 #define HOMEASSISTANT_PREFIX    "homeassistant" // Default MQTT prefix
 
+#ifndef HOMEASSISTANT_PAYLOAD_ON
+#define HOMEASSISTANT_PAYLOAD_ON    "1"         // Payload for ON and available messages
+#endif
+
+#ifndef HOMEASSISTANT_PAYLOAD_OFF
+#define HOMEASSISTANT_PAYLOAD_OFF   "0"         // Payload for OFF and unavailable messages
+#endif
+
 // -----------------------------------------------------------------------------
 // INFLUXDB
 // -----------------------------------------------------------------------------

code/espurna/homeassistant.ino

@@ -73,11 +73,11 @@ void _haSendSwitch(unsigned char i, JsonObject& config) {
     if (relayCount()) {
         config["state_topic"] = mqttTopic(MQTT_TOPIC_RELAY, i, false);
         config["command_topic"] = mqttTopic(MQTT_TOPIC_RELAY, i, true);
-        config["payload_on"] = String("1");
-        config["payload_off"] = String("0");
+        config["payload_on"] = String(HOMEASSISTANT_PAYLOAD_ON);
+        config["payload_off"] = String(HOMEASSISTANT_PAYLOAD_OFF);
         config["availability_topic"] = mqttTopic(MQTT_TOPIC_STATUS, false);
-        config["payload_available"] = String("1");
-        config["payload_not_available"] = String("0");
+        config["payload_available"] = String(HOMEASSISTANT_PAYLOAD_ON);
+        config["payload_not_available"] = String(HOMEASSISTANT_PAYLOAD_OFF);
     }
 
     #if LIGHT_PROVIDER != LIGHT_PROVIDER_NONE