[RF69] Replaced RSSI member variable with getRSSI method

examples/RF69/RF69_Receive/RF69_Receive.ino

@@ -68,6 +68,12 @@ void loop() {
     Serial.print(F("[RF69] Data:\t\t"));
     Serial.println(str);
 
+    // print RSSI (Received Signal Strength Indicator)
+    // of the last received packet
+    Serial.print(F("[RF69] RSSI:\t\t"));
+    Serial.print(rf.getRSSI());
+    Serial.println(F(" dBm"));
+
   } else if (state == ERR_RX_TIMEOUT) {
     // timeout occurred while waiting for a packet
     Serial.println(F("timeout!"));

examples/RF69/RF69_Receive_Interrupt/RF69_Receive_Interrupt.ino

@@ -112,9 +112,15 @@ void loop() {
       Serial.println(F("[RF69] Received packet!"));
 
       // print data of the packet
-      Serial.print(F("[RF69] Data:\t\t\t"));
+      Serial.print(F("[RF69] Data:\t\t"));
       Serial.println(str);
 
+      // print RSSI (Received Signal Strength Indicator)
+      // of the last received packet
+      Serial.print(F("[RF69] RSSI:\t\t"));
+      Serial.print(rf.getRSSI());
+      Serial.println(F(" dBm"));
+
     } else if (state == ERR_CRC_MISMATCH) {
       // packet was received, but is malformed
       Serial.println(F("CRC error!"));

src/modules/RF69/RF69.cpp

@@ -147,7 +147,7 @@ int16_t RF69::receive(uint8_t* data, size_t len) {
   uint32_t start = micros();
   while(!digitalRead(_mod->getIrq())) {
     yield();
-    
+
     if(micros() - start > timeout) {
       standby();
       clearIRQFlags();
@@ -330,9 +330,6 @@ int16_t RF69::readData(uint8_t* data, size_t len) {
   // read packet data
   _mod->SPIreadRegisterBurst(RF69_REG_FIFO, length, data);
 
-  // update RSSI
-  lastPacketRSSI = -1.0 * (_mod->SPIgetRegValue(RF69_REG_RSSI_VALUE)/2.0);
-
   // clear internal flag so getPacketLength can return the new packet length
   _packetLengthQueried = false;
 
@@ -701,6 +698,10 @@ int16_t RF69::setEncoding(uint8_t encoding) {
   }
 }
 
+float RF69::getRSSI() {
+  return(-1.0 * (_mod->SPIgetRegValue(RF69_REG_RSSI_VALUE)/2.0));
+}
+
 int16_t RF69::config() {
   int16_t state = ERR_NONE;
 

src/modules/RF69/RF69.h

@@ -441,11 +441,6 @@ class RF69: public PhysicalLayer {
     */
     RF69(Module* module);
 
-    /*!
-      \brief RSSI value of the last received packet.
-    */
-    float lastPacketRSSI;
-
     // basic methods
 
     /*!
@@ -791,6 +786,13 @@ class RF69: public PhysicalLayer {
     */
     int16_t setEncoding(uint8_t encoding);
 
+    /*!
+      \brief Gets RSSI (Recorded Signal Strength Indicator) of the last received packet.
+
+      \returns Last packet RSSI in dBm.
+    */
+    float getRSSI();
+
 #ifndef RADIOLIB_GODMODE
   protected:
 #endif