# motors.py
from machine import Pin, PWM

class Motor:
    def __init__(self, pin1=13, pin2=14, freq=20000):
        # Two PWM objects, one per pin
        self._pwm1 = PWM(Pin(pin1), freq=freq, duty=0)
        self._pwm2 = PWM(Pin(pin2), freq=freq, duty=0)

    def move(self, value):
        # Clamp input
        if value > 1023:
            value = 1023
        elif value < -1023:
            value = -1023

        if value == 0:
            # Stop: both low
            self._pwm1.duty(0)
            self._pwm2.duty(0)
        elif value > 0:
            # Forward: pin1 PWM, pin2 low
            self._pwm1.duty(value)
            self._pwm2.duty(0)
        else:
            # Backward: pin2 PWM, pin1 low
            self._pwm1.duty(0)
            self._pwm2.duty(-value)