#include <LiquidCrystal_I2C.h>

int ledPin = 0;
int buttonPin = 1;

int buttonState = 0;
int lastButtonState = 0;

int lcdSDAPin = 26;
int lcdSCL = 21;

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  // Initialize serial communication at 115200 bits per second
  Serial1.begin(115200);
  Serial1.println("Hello, Raspberry Pi Pico!");

  pinMode(ledPin, OUTPUT);
  // Set the button pin as input with an internal pull-up resistor
  pinMode(buttonPin, INPUT_PULLUP);


  // Init
  lcd.init();
  lcd.backlight();

  // Print something
  lcd.setCursor(0, 0);
  lcd.print("Hello, world!");

}

void loop() {
  turnOnLEDOnButtonPress();
}

void turnOnLEDOnButtonPress() {
  // Read the current state of the button
  buttonState = digitalRead(buttonPin);

  // If the button state has changed
  if (buttonState != lastButtonState) {
    // Print the new state
    if (buttonState == LOW) {
      Serial1.println("Button pressed");
      digitalWrite(ledPin, HIGH);
    } else {
      Serial1.println("Button released");
      digitalWrite(ledPin, LOW);
    }

    // Update the last button state
    lastButtonState = buttonState;

    // Small delay to debounce the button
    delay(50);
  }
}