void setup() {
 pinMode(P1_2, OUTPUT); // 1,2 EN
 pinMode(P2_1, OUTPUT); // Positive left Motor 1A
 pinMode(P2_2, OUTPUT); // Negative left Motor 2A
 pinMode(P1_6, OUTPUT); // 3,4 EN
 pinMode(P2_5, OUTPUT); // Positve Right Motor  4A
 pinMode(P2_4, OUTPUT); // Negative left Motor  3A

}
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(P1_2, HIGH);
  digitalWrite(P1_6, HIGH);
  //delay(1000); //delay 1 sec
  analogWrite(P2_1, 90);  // /./.
  analogWrite(P2_2, 0);
  analogWrite(P2_5, 0);
  analogWrite(P2_4, 90);
}