Fix Arduino compile issues

src/fdrs_gateway_lora.h

@@ -84,6 +84,7 @@ RADIOLIB_MODULE radio = new Module(LORA_SS, LORA_DIO, LORA_RST, -1, LORA_SPI);
 RADIOLIB_MODULE radio = new Module(LORA_SS, LORA_DIO, LORA_RST, -1);
 #endif // CUSTOM_SPI
 
+bool pingFlag = false;
 bool transmitFlag = false;            // flag to indicate transmission or reception state
 volatile bool enableInterrupt = true; // disable interrupt when it's not needed
 volatile bool operationDone = false;  // flag to indicate that a packet was sent or received

src/fdrs_node.h

@@ -51,6 +51,7 @@ uint8_t ln;
 bool newData;
 uint8_t gatewayAddress[] = {MAC_PREFIX, GTWY_MAC};
 const uint16_t espnow_size = 250 / sizeof(DataReading);
+crcResult crcReturned = CRC_NULL;
 
 uint32_t gtwy_timeout = 0;
 uint8_t incMAC[6];
@@ -355,7 +356,7 @@ bool addFDRS(int timeout, void (*new_cb_ptr)(DataReading))
   return true;
 }
 
-uint32_t pingFDRS(uint32 timeout)
+uint32_t pingFDRS(uint32_t timeout)
 {
 #ifdef USE_ESPNOW
   uint32_t pingResponseMs = pingFDRSEspNow(gatewayAddress, timeout);

src/fdrs_node_espnow.h

@@ -10,9 +10,11 @@
 uint8_t broadcast_mac[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 crcResult esp_now_ack_flag;
 bool is_added = false;
-bool pingFlag = false;
+
 
 #ifdef USE_ESPNOW
+bool pingFlag = false;
+
 // Set ESP-NOW send and receive callbacks for either ESP8266 or ESP32
 #if defined(ESP8266)
 void OnDataSent(uint8_t *mac_addr, uint8_t sendStatus)
@@ -69,10 +71,10 @@ void OnDataRecv(const uint8_t *mac, const uint8_t *incomingData, int len)
 // FDRS node pings gateway and listens for a defined amount of time for a reply
 // Blocking function for timeout amount of time (up to timeout time waiting for reply)(IE no callback)
 // Returns the amount of time in ms that the ping takes or predefined value if ping fails within timeout
-uint32_t pingFDRSEspNow(uint16_t *address, uint32_t timeout) {
+uint32_t pingFDRSEspNow(uint8_t *address, uint32_t timeout) {
     SystemPacket sys_packet = {.cmd = cmd_ping, .param = 0};
     
-    esp_now_send(gatewayAddress, (uint8_t *)&sys_packet, sizeof(SystemPacket));
+    esp_now_send(address, (uint8_t *)&sys_packet, sizeof(SystemPacket));
     DBG(" ESP-NOW ping sent.");
     uint32_t ping_start = millis();
     pingFlag = false;

src/fdrs_node_lora.h

@@ -485,6 +485,7 @@ crcResult getLoRa()
 // Returns the amount of time in ms that the ping takes or predefined value if ping fails within timeout
 uint32_t pingFDRSLoRa(uint16_t *address, uint32_t timeout)
 {
+#ifdef USE_LORA
     SystemPacket sys_packet = {.cmd = cmd_ping, .param = 0};
 
     transmitLoRa(address, &sys_packet, 1);
@@ -504,6 +505,7 @@ uint32_t pingFDRSLoRa(uint16_t *address, uint32_t timeout)
     }
     DBG("No LoRa ping returned within " + String(timeout) + "ms.");
     return UINT32_MAX;
+#endif // USE_LORA
 }