Modified the structure for use as message standard, also added some more helper functions.

LINX_SOFTWARE-COMMENTED.ino

@@ -38,22 +38,31 @@ TinyGPSPlus gps;                     // TinyGPS++ object to process GPS data
 #define RF95_FREQ 915.0
 #define RF95_MAX_DB 23
 #define RF95_MIN_DB 5
+#define RF95_TIMEOUT 250
+#define RF95_BUF_SZ 32
 RH_RF95 rf95(RFM95_CS, RMF95_INT);  // Radio instance.
 
 
-typedef struct NodeId{
+typedef struct Msg{
     uint8_t id;
-    String name;
-}NodeId
+    double latitude;
+    double longitude;
+    uint8_t crc;
+}Msg;
 
 
 // Variables
 static int prevHeading = -1;         // Store previous heading to avoid frequent updates
 unsigned long lastUpdate = 0;        // Time tracking for updates
 const int updateInterval = 500;      // Update interval in milliseconds (500ms = 0.5s)
+NodeId node = {
+    id = 0;
+    name = "name";
+};
+uint8_t reciver_buffer[RF95_BUF_SZ];
 
 
-void radio_setup(void) {
+void Radio_setup(void) {
     pinMode(RFM95_RST, OUTPUT);
     digitalWrite(RFM95_RST, HIGH);
 
@@ -70,13 +79,59 @@ void radio_setup(void) {
     rf95.setTxPower(RF95_MIN_DB, false);
 }
 
-void radio_reset(void) {
+void Radio_reset(void) {
   digitalWrite(RFM95_RST, LOW);
   delay(10);
   digitalWrite(RFM95_RST, HIGH);
   delay(10);
 }
 
+
+int Radio_SendData() {
+    int8_t tx_power = RF95_MIN_DB;   
+    uint8_t received_id = 0;
+
+    //Set the radio output to lowest power.
+    rf95.setTxPower(tx_power, false);
+
+    //Set the radio into TX mode.
+    rf95.setModeTx();
+
+    //Try transmitting data
+    rf95.send(node.id, 1);
+    rf95.waitPacketSent();
+
+    //Wait for ACK or Radio Msg. (Timeout Should be included).
+    //On timeout increase the transmit power and re-attempt.
+    if(!rf95.waitAvailbleTimeout(RF95_TIMEOUT)) {
+        if(rf95.recv(reciver_buffer, RF95_BUF_SZ)) {
+        
+        }
+        else {
+            //Failed to receive the message.
+        }
+    }
+    else {
+        //No reply of any kind.
+    }
+
+    //Set the radio mode to idle.
+    rf95.setModeIdle();
+}
+
+int Radio_ReceiveData() {
+    //Set radio into RX mode.
+    rf95.setModeRx();
+
+    //Check if radio has traffic
+    if()
+
+
+    //Set the radio mode to idle.
+    rf95.setModeIdle();
+}
+
+
 void setup(void) {
   // Initialize Serial Communication for debugging
   Serial.begin(115200);
@@ -154,6 +209,9 @@ void updateLEDs(int heading) {
 
 // Placeholder for updating the TFT display with GPS data
 void updateDisplay() {
+    // Disable interrupts while using the dispaly.
+    cli();
+
   // Add logic to display the distance between devices on the screen
   // You can add code here to:
   // - Display the current distance between devices using the GPS data
@@ -164,6 +222,9 @@ void updateDisplay() {
   // tft.setTextSize(2);  // Set text size
   // tft.print("Distance: ");
   // tft.print(calculatedDistance);
+
+    //Re-Enable interrupts globally.
+    sei(); 
 }
 
 // Future function to handle LoRa transmission of GPS data - See adafruit LORA code examples