39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Daniel Thompson
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"""Generic PWM capable vibration motor driver
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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"""
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import time
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from machine import PWM
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class Vibrator(object):
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"""Vibration motor driver.
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.. automethod:: __init__
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"""
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def __init__(self, pin, active_low=False):
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"""Specify the pin and configuration used to operate the motor.
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:param machine.Pin pin: The PWM-capable pin used to driver the
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vibration motor.
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:param bool active_low: Invert the resting state of the motor.
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"""
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pin.value(active_low)
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self.pin = pin
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self.freq = PWM.FREQ_16MHZ
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self.period = 16000
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self.active_low = active_low
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def pulse(self, duty=25, ms=40):
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"""Briefly pulse the motor.
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:param int duty: Duty cycle, in percent.
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:param int ms: Duration, in milliseconds.
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"""
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pwm = PWM(0, self.pin, freq=self.freq, duty=duty, period=self.period)
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pwm.init()
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time.sleep_ms(ms)
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pwm.deinit()
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self.pin.value(self.active_low)
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