#include <Wire.h>
#include <hd44780.h>
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header
hd44780_I2Cexp lcd;
const int nbCols = 20;
const int nbLignes = 4;

void setup() {

  Serial.begin(115200);

  int lcdAbsent = lcd.begin(nbCols, nbLignes);
  if (lcdAbsent) {
    Serial.print(" initialisation LCD - erreur ");
    Serial.println(lcdAbsent);
    hd44780::fatalError(lcdAbsent);
  }

  lcd.print("BONJOUR");

}

void loop() {}