[SX126x] Added missing PHY getRSSI (#1132)

src/modules/SX126x/SX126x.cpp

@@ -1327,6 +1327,10 @@ float SX126x::getDataRate() const {
   return(this->dataRateMeasured);
 }
 
+float SX126x::getRSSI() {
+  return(this->getRSSI(true));
+}
+
 float SX126x::getRSSI(bool packet) {
   if(packet) { 
     // get last packet RSSI from packet status

src/modules/SX126x/SX126x.h

@@ -917,11 +917,18 @@ class SX126x: public PhysicalLayer {
     float getDataRate() const;
 
     /*!
-      \brief GetsRSSI (Recorded Signal Strength Indicator).
+      \brief Gets recorded signal strength indicator.
+      Overload with packet mode enabled for PhysicalLayer compatibility.
+      \returns RSSI value in dBm.
+    */
+    float getRSSI() override;
+
+    /*!
+      \brief Gets RSSI (Recorded Signal Strength Indicator).
       \param packet Whether to read last packet RSSI, or the current value.
       \returns RSSI value in dBm.
     */
-    float getRSSI(bool packet = true);
+    float getRSSI(bool packet);
 
     /*!
       \brief Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa modem.