[LORA] Improvements, change frequency, webUI, Oled support, add boards (#1742)

* [LORA] Capability to change LORA frequency and Add OLED

Merge of the 2 environments for TTGO V1

* Merge messages keys with upper level json

* Id as a sub topic

* Add display and state measures

* Add frequency configuration through WebUI

* Add parameters

* Add auto discovery

* Add node example for ttgo lora32 v1

* Add environments and fix scope

* Support for sync word as a byte

* Fix TX Power setting

* Add LoRa gateway description

* Add onlyknown filter

main/config_LORA.h

@@ -34,19 +34,39 @@ extern void MQTTtoLORA(char* topicOri, JsonObject& RFdata);
 #define subjectLORAtoMQTT    "/LORAtoMQTT"
 #define subjectMQTTtoLORA    "/commands/MQTTtoLORA"
 #define subjectGTWLORAtoMQTT "/LORAtoMQTT"
+#define subjectMQTTtoLORAset "/commands/MQTTtoLORA/config"
 
 //Default parameters used when the parameters are not set in the json data
 #ifndef LORA_BAND
 #  define LORA_BAND 868E6
 #endif
-#define LORA_SIGNAL_BANDWIDTH 125E3
-#define LORA_TX_POWER         17
-#define LORA_SPREADING_FACTOR 7
-#define LORA_CODING_RATE      5
-#define LORA_PREAMBLE_LENGTH  8
-#define LORA_SYNC_WORD        0x12
-#define DEFAULT_CRC           true
-#define INVERT_IQ             false
+#ifndef LORA_SIGNAL_BANDWIDTH
+#  define LORA_SIGNAL_BANDWIDTH 125E3
+#endif
+#ifndef LORA_TX_POWER
+#  define LORA_TX_POWER 14
+#endif
+#ifndef LORA_SPREADING_FACTOR
+#  define LORA_SPREADING_FACTOR 7
+#endif
+#ifndef LORA_CODING_RATE
+#  define LORA_CODING_RATE 5
+#endif
+#ifndef LORA_PREAMBLE_LENGTH
+#  define LORA_PREAMBLE_LENGTH 8
+#endif
+#ifndef LORA_SYNC_WORD
+#  define LORA_SYNC_WORD 0x12
+#endif
+#ifndef DEFAULT_CRC
+#  define DEFAULT_CRC true
+#endif
+#ifndef INVERT_IQ
+#  define INVERT_IQ false
+#endif
+#ifndef LORA_ONLY_KNOWN
+#  define LORA_ONLY_KNOWN false
+#endif
 
 #define repeatLORAwMQTT false // do we repeat a received signal by using MQTT with LORA gateway
 
@@ -78,4 +98,39 @@ extern void MQTTtoLORA(char* topicOri, JsonObject& RFdata);
 #  define LORA_DI0 26 // GPIO26 -- SX1278's IRQ(Interrupt Request)
 #endif
 
+struct LORAConfig_s {
+  long frequency;
+  int txPower;
+  int spreadingFactor;
+  long signalBandwidth;
+  int codingRateDenominator;
+  int preambleLength;
+  byte syncWord;
+  bool crc;
+  bool invertIQ;
+  bool onlyKnown;
+};
+
+#ifdef ZmqttDiscovery
+extern void launchLORADiscovery(bool overrideDiscovery);
+// This structure stores the entities of the devices and is they have been discovered or not
+// The uniqueId is composed of the device id + the key
+
+#  define uniqueIdSize  30
+#  define modelNameSize 30
+
+struct LORAdevice {
+  char uniqueId[uniqueIdSize];
+  char modelName[modelNameSize];
+  bool isDisc;
+};
+
+const char LORAparameters[3][4][12] = {
+    // LORA key, name, unit, device_class
+    {"tempc", "temperature", "°C", "temperature"},
+    {"hum", "humidity", "%", "humidity"},
+    {"moi", "moisture", "%", "humidity"}};
+
+#endif
+
 #endif