L298N_ESP32.ino

#define IN1 23
#define IN2 22

void setPWM(int ch, int duty) {
  int new_duty = map(duty, 0, 100, 0, 1023);
  ledcWrite(ch, new_duty);
}

void setup() {
  // --- Setup PWM via LEDC
  ledcSetup(0, 500, 10);
  ledcSetup(1, 500, 10);
  ledcAttachPin(IN1, 0);
  ledcAttachPin(IN2, 1);
  // ------
}

void loop() {
  // --- Direction Left, Speed 25%
  setPWM(0, 0);
  setPWM(1, 25);
  // ------
  delay(1000);

  // --- Direction Left, Speed 50%
  setPWM(0, 0);
  setPWM(1, 50);
  // ------
  delay(1000);

  // --- Direction Left, Speed 100%
  setPWM(0, 0);
  setPWM(1, 100);
  // ------
  delay(1000);

  // --- Stop
  setPWM(0, 0);
  setPWM(1, 0);
  // ------
  delay(1000);

  // --- Direction Right, Speed 25%
  setPWM(0, 25);
  setPWM(1, 0);
  // ------
  delay(1000);

  // --- Direction Right, Speed 50%
  setPWM(0, 50);
  setPWM(1, 0);
  // ------
  delay(1000);

  // --- Direction Right, Speed 100%
  setPWM(0, 100);
  setPWM(1, 0);
  // ------
  delay(1000);

  // --- Stop
  setPWM(0, 0);
  setPWM(1, 0);
  // ------
  delay(1000);
}