#include <LiquidCrystal_I2C.h>

int button = PA6;
int led = PA5;
int sda = PA7;
int scl = PA9;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  lcd.Serial(sda, scl);
  Serial.begin(115200);
  Serial.println("Hello, STM32!");

  pinMode(button, INPUT);
  pinMode(led, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  int buttonState = digitalRead(button);
  
  if(buttonState == HIGH){
    digitalWrite(led, HIGH);
  } else {
    digitalWrite(led, LOW);
  }
}