Active Receiver Switching (#936)

* PR #934

* Active Receiver Switching

Switching of the active receiver module is available between the RF,
RF2, RTL_433 and Pilight Gateway modules, allowing for changing of
signal decoders without redploying the openMQTTGateway package.
Sending a JSON message to the command topic of the desired receiver
will change the active receiver module.

Other minor adjustments/improvements

1 - Improved startup serial logging that includes
- OpenMQTTGateway Version
- OpenMQTTGateway Modules

2 - Trace logging of full Gateway module command topic
 - Enabled in RF, RF2, PiLight and RTL_433

3 - Updated RTL_433 Documentation to only include enabled ASK/OOK
device decoders

4 - Trace logging of MQTT Callback topic

* Regression testing

* Adding valueAsASubject support to rtl_433_ESP
- model and id keys are appended to message topic

* Increased memory size for receiver switching in blocking build all

Co-authored-by: Northern Man <sgracey@Heisenberg.local>

main/main.ino

@@ -531,7 +531,7 @@ void callback(char* topic, byte* payload, unsigned int length) {
   // In order to republish this payload, a copy must be made
   // as the orignal payload buffer will be overwritten whilst
   // constructing the PUBLISH packet.
-  Log.trace(F("Hey I got a callback " CR));
+  Log.trace(F("Hey I got a callback %s" CR), topic);
   // Allocate the correct amount of memory for the payload copy
   byte* p = (byte*)malloc(length + 1);
   // Copy the payload to the new buffer
@@ -568,6 +568,7 @@ void setup() {
 #    if defined(ZboardM5STICKC) || defined(ZboardM5STICKCP) || defined(ZboardM5STACK)
   setupM5();
 #    endif
+  Log.notice(F("OpenMQTTGateway Version: " OMG_VERSION CR));
 #  endif
 
 #  ifdef ESP32_ETHERNET
@@ -654,14 +655,24 @@ void setup() {
 #ifdef ZgatewayRF
   setupRF();
   modules.add(ZgatewayRF);
+#  define ACTIVE_RECEIVER ACTIVE_RF
 #endif
 #ifdef ZgatewayRF2
   setupRF2();
   modules.add(ZgatewayRF2);
+#  ifdef ACTIVE_RECEIVER
+#    undef ACTIVE_RECEIVER
+#  endif
+#  define ACTIVE_RECEIVER ACTIVE_RF2
 #endif
 #ifdef ZgatewayPilight
   setupPilight();
   modules.add(ZgatewayPilight);
+  disablePilightReceive();
+#  ifdef ACTIVE_RECEIVER
+#    undef ACTIVE_RECEIVER
+#  endif
+#  define ACTIVE_RECEIVER ACTIVE_PILIGHT
 #endif
 #ifdef ZgatewayWeatherStation
   setupWeatherStation();
@@ -737,9 +748,27 @@ void setup() {
 #ifdef ZgatewayRTL_433
   setupRTL_433();
   modules.add(ZgatewayRTL_433);
+#  ifdef ACTIVE_RECEIVER
+#    undef ACTIVE_RECEIVER
+#  endif
+#  define ACTIVE_RECEIVER ACTIVE_RTL
+#endif
+#if defined(ZgatewayRTL_433) || defined(ZgatewayRF) || defined(ZgatewayPilight) || defined(ZgatewayRF2)
+#  ifdef DEFAULT_RECEIVER // Allow defining of default receiver as a compiler directive
+  activeReceiver = DEFAULT_RECEIVER;
+#  else
+  activeReceiver = ACTIVE_RECEIVER;
+#  endif
+  enableActiveReceiver();
 #endif
   Log.trace(F("mqtt_max_packet_size: %d" CR), mqtt_max_packet_size);
-  Log.notice(F("Setup OpenMQTTGateway end" CR));
+
+#ifndef ARDUINO_AVR_UNO // Space issues with the UNO
+  char jsonChar[100];
+  modules.printTo((char*)jsonChar, modules.measureLength() + 1);
+  Log.notice(F("OpenMQTTGateway modules: %s" CR), jsonChar);
+#endif
+  Log.notice(F("************** Setup OpenMQTTGateway end **************" CR));
 }
 
 #if defined(ESP8266) || defined(ESP32)
@@ -1410,13 +1439,18 @@ void stateMeasures() {
   SYSdata["m5batchargecurrent"] = (float)M5.Axp.GetBatChargeCurrent();
   SYSdata["m5apsvoltage"] = (float)M5.Axp.GetAPSVoltage();
 #  endif
+#  if defined(ZgatewayRF) || defined(ZgatewayPilight) || defined(ZgatewayRTL_433) || defined(ZgatewayRF2)
+  SYSdata["actRec"] = (int)activeReceiver;
+#  endif
 #  ifdef ZradioCC1101
-  SYSdata["mhz"] = (int)receiveMhz;
+  SYSdata["mhz"] = (float)receiveMhz;
 #  endif
 #  if defined(ZgatewayRTL_433)
-  SYSdata["RTLminRssi"] = (int)getRTLMinimumRSSI();
-  SYSdata["RTLRssi"] = (int)getRTLCurrentRSSI();
-  SYSdata["RTLCnt"] = (int)getRTLMessageCount();
+  if (activeReceiver == ACTIVE_RTL) {
+    SYSdata["RTLminRssi"] = (int)getRTLMinimumRSSI();
+    SYSdata["RTLRssi"] = (int)getRTLCurrentRSSI();
+    SYSdata["RTLCnt"] = (int)getRTLMessageCount();
+  }
 #  endif
   SYSdata.set("modules", modules);
   pub(subjectSYStoMQTT, SYSdata);
@@ -1614,4 +1648,4 @@ void MQTTtoSYS(char* topicOri, JsonObject& SYSdata) { // json object decoding
     }
 #endif
   }
-}
+}