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#define borneIN1        7       // On branche "IN1" du L298N à la pin D7 de l'arduino
#define borneIN2        8       // On branche "IN2" du L298N à la pin D8 de l'arduino
#define borneIN3        9       // On branche "IN3" du L298N à la pin D9 de l'arduino
#define borneIN4        10       // On branche "IN4" du L298N à la pin D10 de l'arduino


void setup() {

  // Déclaration des pins de l'Arduino en "sortie"
  pinMode(borneIN1, OUTPUT);
  pinMode(borneIN2, OUTPUT);
  pinMode(borneIN3, OUTPUT);
  pinMode(borneIN4, OUTPUT);
}

void loop() {
  MarcheAV();
  delay(5000);
  Arret();
  delay(2000);
  MarcheAR();
  delay(5000);
  Arret();
  delay(2000);
}

void MarcheAV() {
  // Configuration du L298N en "marche avant"
  digitalWrite(borneIN1, HIGH);
  digitalWrite(borneIN2, LOW);
  digitalWrite(borneIN3, HIGH);
  digitalWrite(borneIN4, LOW);
}

void MarcheAR() {
  // Configuration du L298N en "marche arrière"
  digitalWrite(borneIN1, LOW);
  digitalWrite(borneIN2, HIGH);
  digitalWrite(borneIN3, LOW);
  digitalWrite(borneIN4, HIGH);
}

void Arret() {
  // Configuration du L298N en "Arret"
  digitalWrite(borneIN1, LOW);
  digitalWrite(borneIN2, LOW);
  digitalWrite(borneIN3, LOW);
  digitalWrite(borneIN4, LOW);
}