SignalK publish in MQTT Server

[PaddyB]

I found it was easier to send the data straight to signalk, this sends it over wifi and serial, from memory arduinojson library needs to be before 6.0.0

Code:

/                     send signalk data over UDP
//      *******************************************************
void sendSigK(String sigKey, float data)
{

 if (sendSig_Flag == 1)
 {
   DynamicJsonBuffer jsonBuffer;
   String deltaText;

   //  build delta message
   JsonObject &delta = jsonBuffer.createObject();

   //updated array
   JsonArray &updatesArr = delta.createNestedArray("updates");
   JsonObject &thisUpdate = updatesArr.createNestedObject();   //Json Object nested inside delta [...
   JsonArray &values = thisUpdate.createNestedArray("values"); // Values array nested in delta[ values....
   JsonObject &thisValue = values.createNestedObject();
   thisValue["path"] = sigKey;
   thisValue["value"] = data;

   thisUpdate["Source"] = "ESP32";

   // Send UDP packet
   Udp.beginPacket(remoteIp, remotePort);
   delta.printTo(Udp);
   Udp.println();
   Udp.endPacket();
   delta.printTo(Serial);
   Serial.println();
 }
} //___________________________________________________________