Pololu G2 high-power motor driver

/*
The Pololu G2 High-Power Motor Driver is available in several variants, but the basic control logic is similar for all. Here's an example code to control a Pololu G2 High-Power Motor Driver (18v25, 24v13, 18v17, or 24v21) using an Arduino:

This code sets the motor direction to forward, ramps up the motor speed from 0 to maximum, and then ramps down the speed to 0. It then reverses the motor direction and repeats the same process.

Connect the Pololu G2 High-Power Motor Driver to the Arduino as follows:

PWM pin to digital pin 9 on the Arduino
DIR pin to digital pin 8 on the Arduino
Additionally, make the following connections:

Connect the motor driver's GND pin to the GND pin on the Arduino
Connect the motor driver's VIN and GND pins to an appropriate power supply for your motor
Connect the motor to the motor driver's OUTA and OUTB pins
Please note that you may need to adjust the pin numbers in the code depending on the specific pins you choose to use for connecting the motor driver to your Arduino.
*/

#include <Arduino.h>

const int pwmPin = 9;  // Connect this pin to the PWM pin of the motor driver
const int dirPin = 8;  // Connect this pin to the DIR pin of the motor driver

void setup() {
  pinMode(pwmPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
}

void loop() {
  // Set motor direction to forward
  digitalWrite(dirPin, HIGH);

  // Ramp up the motor speed
  for (int speed = 0; speed <= 255; speed++) {
    analogWrite(pwmPin, speed);
    delay(10);
  }

  // Ramp down the motor speed
  for (int speed = 255; speed >= 0; speed--) {
    analogWrite(pwmPin, speed);
    delay(10);
  }

  // Set motor direction to reverse
  digitalWrite(dirPin, LOW);

  // Ramp up the motor speed
  for (int speed = 0; speed <= 255; speed++) {
    analogWrite(pwmPin, speed);
    delay(10);
  }

  // Ramp down the motor speed
  for (int speed = 255; speed >= 0; speed--) {
    analogWrite(pwmPin, speed);
    delay(10);
  }
}