#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);  // I2C address 0x27, 16x2 LCD

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();

  Serial1.begin(9600);  // Initialize Serial1 for communication

  lcd.setCursor(0, 0);
  lcd.print("Waiting for data");

  // Debug message to Serial1
  Serial1.println("Hello, Raspberry Pi Pico W!");
}

void loop() {
  // Check if there is data available on Serial1
  if (Serial1.available() > 0) {
    lcd.clear();  // Clear the display before showing new data
    String incomingData = "";

    // Read the incoming data
    while (Serial1.available() > 0) {
      char incomingChar = Serial1.read();
      incomingData += incomingChar;
    }

    Serial1.println(incomingData);  // Echo the received data back

    // Display the received data on the LCD
    lcd.setCursor(0, 0);
    lcd.print("Received Data:");

    // Clear the second line before printing new data
    lcd.setCursor(0, 1);
    lcd.print("                ");  // Clear previous message
    lcd.setCursor(0, 1);
    lcd.print(incomingData);  // Show the received data
  }

  delay(100);  // Add a slight delay to avoid overwhelming the LCD
}