""" 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
+import board # need board to get access to the CHIP object in the pin module
+
# pylint: disable=unnecessary-pass
class PWMError(IOError):
# pylint: enable=unnecessary-pass
-class PWMOut: # pylint: disable=invalid-name
+class PWMOut: # pylint: disable=invalid-name
"""Pulse Width Modulation Output Class"""
- def __init__(self, pin, *, frequency=500, duty_cycle=0,
- variable_frequency=False):
+ 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(
+ board.pin.CHIP, self._pin.id, lFlags=lgpio.SET_PULL_NONE
+ )
if result < 0:
raise RuntimeError(lgpio.error_text(result))
self._enabled = False
"""Deinit the PWM."""
if not self._deinited:
if self.enabled:
- self._enabled = False # turn off the pwm
+ self._enabled = False # turn off the pwm
self._deinited = True
-
def _is_deinited(self):
- """ raise Value error if the object has been de-inited """
+ """raise Value error if the object has been de-inited"""
if self._deinited:
raise ValueError(
"Object has been deinitialize and can no longer "
raise TypeError("Invalid duty cycle type, should be int or float.")
if not 0 <= duty_cycle <= 65535:
- raise ValueError(
- "Invalid duty cycle value, should be between 0 and 65535")
+ raise ValueError("Invalid duty cycle value, should be between 0 and 65535")
# convert from 16-bit
duty_cycle /= 65535.0
self._duty_cycle = duty_cycle
if self._enabled:
- self.enabled = True # turn on with new values
+ self.enabled = True # turn on with new values
@property
def frequency(self):
self._frequency = frequency
if self.enabled:
- self.enabled = True # turn on with new values
+ self.enabled = True # turn on with new values
@property
def enabled(self):
raise RuntimeError(lgpio.error_text(result))
return result
-
# String representation
def __str__(self):
- return (f"pin {self._pin} (freq={self.frequency:f} Hz, duty_cycle="
- f"{self.duty_cycle}({round(self.duty_cycle / 655.35)}%)")
+ return (
+ f"pin {self._pin} (freq={self.frequency:f} Hz, duty_cycle="
+ f"{self.duty_cycle}({round(self.duty_cycle / 655.35)}%)"
+ )