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

/* LCD: address, columns, rows */
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Wire.begin();          // PB7 = SDA, PB6 = SCL
  lcd.init();
  lcd.backlight();

  lcd.setCursor(0, 0);
  lcd.print("STM32 LCD Test");

  lcd.setCursor(0, 1);
  lcd.print("Wokwi OK!");
}

void loop() {
  // nothing to do
}