// ESP32 Sender - Sends "hello" every 5 seconds and receives "ciao"
#include <Arduino.h>

// Define UART pins
#define RX_PIN 16  // GPIO16 for UART2 RX
#define TX_PIN 17  // GPIO17 for UART2 TX

 

void setup() {
  // Initialize Serial Monitor for debugging
  Serial.begin(115200);
   
  // Initialize UART2 for communication with the second ESP32
  Serial2.begin(115200, SERIAL_8N1, RX_PIN, TX_PIN);
}

void loop() {
    
 
  // Check if data is available from the other ESP32
  if (Serial.available()) {
    // Read the incoming message
    String message = Serial.readStringUntil('\n');
    message.trim();  // Remove any whitespace or newline characters
    
    // Print received message
     Serial.print(message);
     Serial2.print(message);
  }
}