circuitpython/ports/nrf/examples/nrf52_servo.py

# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2017 Glenn Ruben Bakke
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE

import time
from machine import PWM, Pin


class Servo:
    def __init__(self, pin_name=""):
        if pin_name:
            self.pin = Pin(pin_name, mode=Pin.OUT, pull=Pin.PULL_DOWN)
        else:
            self.pin = Pin("P22", mode=Pin.OUT, pull=Pin.PULL_DOWN)

    def left(self):
        p = PWM(
            0, self.pin, freq=PWM.FREQ_125KHZ, pulse_width=105, period=2500, mode=PWM.MODE_HIGH_LOW
        )
        p.init()
        time.sleep_ms(200)
        p.deinit()

    def center(self):
        p = PWM(
            0, self.pin, freq=PWM.FREQ_125KHZ, pulse_width=188, period=2500, mode=PWM.MODE_HIGH_LOW
        )
        p.init()
        time.sleep_ms(200)
        p.deinit()

    def right(self):
        p = PWM(
            0, self.pin, freq=PWM.FREQ_125KHZ, pulse_width=275, period=2500, mode=PWM.MODE_HIGH_LOW
        )
        p.init()
        time.sleep_ms(200)
        p.deinit()