Envi-Rover/controller.txt at main · Harish-Patill/Envi-Rover · GitHub

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// ---- Blynk IoT 2.0 template definitions MUST come first ----
#define BLYNK_TEMPLATE_ID   "TMPL3Zo49Nb9U"       // Replace with your Blynk IoT template ID
#define BLYNK_TEMPLATE_NAME "EnviRover"    // Replace with your Blynk IoT template name
#define BLYNK_AUTH_TOKEN    "Iwi_UKTzvawcSH6r7EgaVYBgrG-N55qe" // Replace with your device auth token

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <HardwareSerial.h>

// ---- LoRa ----
HardwareSerial LoRa(1);

// ---- WiFi credentials ----
char ssid[] = "Airtel_nare_7416";       // Replace with your WiFi SSID
char pass[] = "air20125";   // Replace with your WiFi password

void setup() {
  Serial.begin(115200);
  LoRa.begin(115200, SERIAL_8N1, 16, 17); // RX=16, TX=17
  Serial.println("🎮 LoRa Controller Ready");

  // ---- LoRa module setup ----
  LoRa.println("AT+RESET"); delay(1000);
  LoRa.println("AT+ADDRESS=2"); delay(200);
  LoRa.println("AT+NETWORKID=5"); delay(200);
  LoRa.println("AT+PARAMETER=12,7,1,4"); delay(200);
  LoRa.println("AT+BAND=868000000"); delay(200);

  Serial.println("✅ Ready to receive telemetry\n");

  // ---- Connect to Blynk IoT ----
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
}

void loop() {
  Blynk.run(); // Keep Blynk running

  // ---- Send control commands via Serial ----
  if (Serial.available()) {
    char cmd = Serial.read();
    String msg = String(cmd);
    String atCmd = "AT+SEND=1," + String(msg.length()) + "," + msg;
    LoRa.println(atCmd);
    Serial.print("➡ Command Sent: ");
    Serial.println(msg);
  }

  // ---- Receive telemetry from LoRa ----
  if (LoRa.available()) {
    String incoming = LoRa.readStringUntil('\n');
    if (incoming.startsWith("+RCV=")) {
      int secondComma = incoming.indexOf(',', incoming.indexOf(',') + 1);
      int thirdComma  = incoming.indexOf(',', secondComma + 1);
      if (secondComma != -1 && thirdComma != -1) {
        String payload = incoming.substring(secondComma + 1, thirdComma);
        payload.trim();

        Serial.println("📡 Raw Telemetry: " + payload);

        // ---- Parse sensors: T, H, L, G ----
        String temp = "", hum = "", light = "", gas = "";

        int tStart = payload.indexOf("T:") + 2;
        int tEnd = payload.indexOf("C");
        if (tStart > 1 && tEnd > tStart) temp = payload.substring(tStart, tEnd);

        int hStart = payload.indexOf("H:") + 2;
        int hEnd = payload.indexOf("%", hStart);
        if (hStart > 1 && hEnd > hStart) hum = payload.substring(hStart, hEnd);

        int lStart = payload.indexOf("L:") + 2;
        int lEnd = payload.indexOf("%", lStart);
        if (lStart > 1 && lEnd > lStart) light = payload.substring(lStart, lEnd);

        int gStart = payload.indexOf("G:") + 2;
        if (gStart > 1 && gStart < payload.length()) gas = payload.substring(gStart);

        // ---- Print telemetry to Serial ----
        Serial.println("🌡 Temp: " + temp + " °C");
        Serial.println("💧 Hum: " + hum + " %");
        Serial.println("💡 Light: " + light + " %");
        Serial.println("🟢 MQ2: " + gas + "\n");

        // ---- Send telemetry to Blynk ----
        if (temp.length() > 0)  Blynk.virtualWrite(V0, temp.toFloat());
        if (hum.length() > 0)   Blynk.virtualWrite(V1, hum.toFloat());
        if (gas.length() > 0)   Blynk.virtualWrite(V2, gas.toInt());
        if (light.length() > 0) Blynk.virtualWrite(V3, light.toFloat());
      }
    }
  }
}