const int DriverA_1 = 6;
const int DriverA_2 = 7;
const int DriverB_1 = 8;
const int DriverB_2 = 9;

void setup() {
  pinMode(DriverA_1, OUTPUT);
  pinMode(DriverA_2, OUTPUT);
  pinMode(DriverB_1, OUTPUT);
  pinMode(DriverB_2, OUTPUT);

}

void loop() {
  motor( HIGH,  LOW, 3000);
}

void motor(int a1, int a2, int d){
  digitalWrite(DriverA_1, a1);
  digitalWrite(DriverA_2, a2);
  digitalWrite(DriverB_1, a1);
  digitalWrite(DriverB_2, a2);
  delay(d);
   
}