methods to read RSSI and SNR

.vscode/arduino.json

@@ -1,7 +1,6 @@
 {
-    "board": "arduino:avr:pro",
+    "board": "bsfrance:avr:lora32u4",
     "sketch": "crossbow.ino",
     "port": "COM23",
-    "output": "./build",
-    "configuration": "cpu=16MHzatmega328"
+    "output": "./build"
 }

crossbow.ino

@@ -226,6 +226,14 @@ void computeCrc(uint8_t dataByte) {
  */
 #ifdef LORA_HARDWARE_SERIAL
 
+int getRadioRssi(void) {
+    return 0;
+}
+
+int getRadioSnr(void) {
+    return 0;
+}
+
 void radioPacketStart(void) {
 
 }
@@ -248,6 +256,14 @@ void writeToRadio(uint8_t dataByte) {
 
 #ifdef LORA_HARDWARE_SPI
 
+int getRadioRssi(void) {
+    return LoRa.packetRssi();
+}
+
+int getRadioSnr(void) {
+    return LoRa.packetSnr();
+}
+
 void radioPacketStart(void) {
     LoRa.beginPacket();
 }