Create in use binary sensor for RN8209 Current sensor (#1474)

main/ZmqttDiscovery.ino

@@ -779,7 +779,7 @@ void pubMqttDiscovery() {
       {"sensor", "volt", "RN8209", "voltage", jsonVolt, "", "", "V"},
       {"sensor", "current", "RN8209", "current", jsonCurrent, "", "", "A"},
       {"sensor", "power", "RN8209", "power", jsonPower, "", "", "W"},
-      {"binary_sensor", "inUse", "RN8209", "power", jsonPower, "", "", ""}
+      {"binary_sensor", "inUse", "RN8209", "power", jsonInuse, "", "", ""}
       //component type,name,availability topic,device class,value template,payload on, payload off, unit of measurement
   };
 

main/config_mqttDiscovery.h

@@ -166,6 +166,7 @@ void announceDeviceTrigger(bool use_gateway_info,
 #  define jsonTime     "{{ value_json.time }}"
 #  define jsonCount    "{{ value_json.count }}"
 #  define jsonAlarm    "{{ value_json.alarm }}"
+#  define jsonInuse    "{{ value_json.power | float > 0 }}"
 #else // Home assistant autodiscovery value key definition
 #  define jsonBatt     "{{ value_json.batt | is_defined }}"
 #  define jsonLux      "{{ value_json.lux | is_defined }}"
@@ -201,6 +202,7 @@ void announceDeviceTrigger(bool use_gateway_info,
 #  define jsonTime     "{{ value_json.time | is_defined }}"
 #  define jsonCount    "{{ value_json.count | is_defined }}"
 #  define jsonAlarm    "{{ value_json.alarm | is_defined }}"
+#  define jsonInuse    "{{ value_json.power | is_defined | float > 0 }}"
 #endif
 
 #define stateClassNone            ""