-# pylint: disable=invalid-name
# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
#
# SPDX-License-Identifier: MIT
-# pylint: enable=invalid-name
+
""" PWMOut Class for lgpio lg library tx_pwm library """
import lgpio
-import board # need board to get access to the CHIP object in the pin module
+from adafruit_blinka.microcontroller.bcm283x.pin import CHIP
-# pylint: disable=unnecessary-pass
class PWMError(IOError):
"""Base class for PWM errors."""
- pass
-
-
-# pylint: enable=unnecessary-pass
-
-class PWMOut: # pylint: disable=invalid-name
+class PWMOut:
"""Pulse Width Modulation Output Class"""
def __init__(self, pin, *, frequency=500, duty_cycle=0, variable_frequency=False):
if variable_frequency:
print("Variable Frequency is not supported, ignoring...")
self._pin = pin
- result = lgpio.gpio_claim_output(
- board.pin.CHIP, self._pin.id, lFlags=lgpio.SET_PULL_NONE
- )
+ result = lgpio.gpio_claim_output(CHIP, self._pin.id, lFlags=lgpio.SET_PULL_NONE)
if result < 0:
raise RuntimeError(lgpio.error_text(result))
self._enabled = False
def __enter__(self):
return self
- def __exit__(self, exc_type, exc_val, exc_tb):
+ def __exit__(self, _exc_type, _exc_val, _exc_tb):
self.deinit()
def deinit(self):
frequency = self._frequency if value else 0
duty_cycle = round(self._duty_cycle * 100)
self._enabled = value
- result = lgpio.tx_pwm(board.pin.CHIP, self._pin.id, frequency, duty_cycle)
+ result = lgpio.tx_pwm(CHIP, self._pin.id, frequency, duty_cycle)
if result < 0:
raise RuntimeError(lgpio.error_text(result))
return result