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#define L298N_ENABLE1 5
#define L298N_IN1 2
#define L298N_IN2 3
void setup() {
pinMode(L298N_IN1, OUTPUT);
pinMode(L298N_IN2, OUTPUT);
}
void loop() {
for ( int i = -100; i < 100; i++) {
motor_speed(i);
delay(20);
}
for ( int i = 100; i > -100; i--) {
motor_speed(i);
delay(20);
}
}
void motor_speed(int speed) {
if ( speed > 0 ) {
digitalWrite(L298N_IN1, HIGH);
digitalWrite(L298N_IN2, LOW);
analogWrite(L298N_ENABLE1, speed);
} else {
digitalWrite(L298N_IN1, LOW);
digitalWrite(L298N_IN2, HIGH);
analogWrite(L298N_ENABLE1, -speed);
}
}