Reyax LoRa Communication

Arduino Uno + LoRa Reyax RYLR896 890 | Communication 2 Arduino board using Reyax Lora RYLR890 896

https://youtu.be/PdfhQa8psb4

#include <SoftwareSerial.h>

SoftwareSerial ReyaxLoRa(5, 4); //--> RX, TX

int data_length;

String data;

int Stat_LED = HIGH;

void setup() {

 Serial.begin(9600);

 ReyaxLoRa.begin(9600);

 delay(100);

 ReyaxLoRa.print("AT\r\n");

 Serial.print("AT\r\n");

}

void loop() {

 Stat_LED = !Stat_LED;

 data = String(Stat_LED);//this can be replaced with a sensor value

 data_length = data.length();

 String mymessage;

 mymessage = mymessage + "AT+SEND=0" + "," + data_length + "," + data + "\r\n";

 ReyaxLoRa.print(mymessage); //--> Send Data

 Serial.print("Send Data : ");

 Serial.print(mymessage);

 delay(2000);

}

//Reyax RYLR896 890 LoRa Receive Data

#include <SoftwareSerial.h>

SoftwareSerial ReyaxLoRa(5, 4); //--> RX, TX

String myString;

char data;

#define LED 3 //--> LED Pin

void setup() {

  Serial.begin(9600);

  ReyaxLoRa.begin(9600);

  pinMode(LED, OUTPUT);

  delay(100);

  ReyaxLoRa.print("AT\r\n");

 Serial.print("AT\r\n");

}

void loop() {

 if (ReyaxLoRa.available() > 0 ) {

   myString = ReyaxLoRa.readString();

   Serial.print("Receive Data : ");

   Serial.print(myString);

   Serial.println("Data Processing");

   String addr = getValue(myString, ',', 0);   //--> address

   String dtl = getValue(myString, ',', 1);    //--> data length

   String dt = getValue(myString, ',', 2);     //--> data

   String rssi = getValue(myString, ',', 3);   //--> RSSI

   String snr = getValue(myString, ',', 4);    //--> SNR

   Serial.print("Address : ");

   Serial.println(addr);

   Serial.print("Data length : ");

   Serial.println(dtl);

   Serial.print("Data : ");

   Serial.println(dt);  // dt can be a sensor value

   Serial.print("RSSI : ");

   Serial.println(rssi);

   Serial.print("SNR : ");

   Serial.println(snr);

   //----------------------------------------Conditions to turn on or turn off the LED

   if (dt == "1") digitalWrite(LED, HIGH);

   if (dt == "0") digitalWrite(LED, LOW);

 }

}

String getValue(String data, char separator, int index) {

   int found = 0;

   int strIndex[] = { 0, -1 };

   int maxIndex = data.length() - 1;

   for (int i = 0; i <= maxIndex && found <= index; i++) {

    if (data.charAt(i) == separator || i == maxIndex) {

     found++;

     strIndex[0] = strIndex[1] + 1;

     strIndex[1] = (i == maxIndex) ? i+1 : i;

   }

 }

 return found > index ? data.substring(strIndex[0], strIndex[1]) : "";

}

Void setup() {

 Serial.begin(115200); // Initialize serial communication with the Reyax module

 Serial.println("AT+ADDRESS=1"); // Set the module address to 1

 delay(100);

 Serial.println("AT+NETWORKID=5"); // Set the network ID to 5

 delay(100);

 Serial.println("AT+PARAMETER=12,7,1"); // Set the RF parameters

 delay(100);

}

void loop() {

 String message = "Hello, LoRa!";

 int address = 2; // Destination address

 int length = message.length();

  // Construct the command

 String command = "AT+SEND=" + String(address) + "," + String(length) + "," + message;

  // Send the command

 Serial.println(command);

 delay(5000); // Wait 5 seconds before sending the next message

}

void loop() {

 if (Serial.available() > 0) {

   String receivedData = Serial.readStringUntil('\n'); // Read the incoming message

   // Print the received data

   Serial.print("Received: ");

   Serial.println(receivedData);

   // You can add additional parsing logic here if needed

  }

}