Initial commit (secrets isolated)

.gitignore

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+secrets.h
+.pio/
+build/
+.vscode/
+.idea/
+*.bin
+*.elf
+*.hex

LoraMqtt_transmitter.ino

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+#include <HardwareSerial.h>
+
+#define LORA_UART Serial2
+#define LORA_TX_PIN 17  // GPIO17 for TX
+#define LORA_RX_PIN 16  // GPIO16 for RX
+
+#define RELAY_PIN 13  // GPIO pin to control the relay
+
+void setup() {
+  Serial.begin(115200);  // Main serial for debugging
+  LORA_UART.begin(9600, SERIAL_8N1, LORA_RX_PIN, LORA_TX_PIN);  // Initialize UART for LoRa
+  
+  pinMode(RELAY_PIN, OUTPUT);  // Set the relay pin as output
+  digitalWrite(RELAY_PIN, LOW);  // Ensure the relay is off at startup
+
+  if (LORA_UART) {
+    Serial.println("LoRa Receiver Initialized");
+  } else {
+    Serial.println("LoRa Receiver Initialization Failed");
+  }
+}
+ 
+void loop() {
+  // Check for incoming LoRa messages via UART
+  if (LORA_UART.available()) {
+    String incoming = "";
+    while (LORA_UART.available()) {
+      char receivedChar = (char)LORA_UART.read();
+      Serial.print(receivedChar);  // Print each received character
+      incoming += receivedChar;
+    }
+    Serial.println("\nReceived via LoRa: " + incoming);
+
+    // Handle relay commands
+    if (incoming == "turn_on_front_sprinkler") {
+      digitalWrite(RELAY_PIN, HIGH);  // Turn on the relay
+      Serial.println("Relay turned on");
+    } else if (incoming == "turn_off_front_sprinkler") {
+      digitalWrite(RELAY_PIN, LOW);  // Turn off the relay
+      Serial.println("Relay turned off");
+    }
+  }
+
+  // Check for Serial Monitor command
+  if (Serial.available()) {
+    String command = Serial.readStringUntil('\n');
+    command.trim();  // Remove any extra whitespace
+
+    if (command == "restart") {
+      Serial.println("Restarting Receiver...");
+      delay(1000);  // Give time for message to print
+      ESP.restart();
+    } else if (command == "test") {
+      LORA_UART.print("Test message from Receiver");
+      Serial.println("Sent test message via LoRa");
+    }
+  }
+
+  delay(1000);  // Add a delay to avoid watchdog timer reset
+}

secrets.h.example

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+#ifndef SECRETS_H
+#define SECRETS_H
+
+#define SECRET_WIFI_SSID "YOUR_WIFI_SSID"
+#define SECRET_WIFI_PASS "YOUR_WIFI_PASSWORD"
+#define SECRET_MQTT_USER "YOUR_MQTT_USERNAME"
+#define SECRET_MQTT_PASS "YOUR_MQTT_PASSWORD"
+
+#endif