# vim: set fileencoding=utf-8:
#
# GPIO Zero: a library for controlling the Raspberry Pi's GPIO pins
#
# Copyright (c) 2016-2021 Dave Jones <dave@waveform.org.uk>
# Copyright (c) 2019-2020 Ben Nuttall <ben@bennuttall.com>
# Copyright (c) 2019 Kosovan Sofiia <sofiia.kosovan@gmail.com>
# Copyright (c) 2016 Andrew Scheller <github@loowis.durge.org>
#
# SPDX-License-Identifier: BSD-3-Clause
from __future__ import (
unicode_literals,
print_function,
absolute_import,
division,
)
str = type('')
[docs]class GPIOZeroError(Exception):
"Base class for all exceptions in GPIO Zero"
[docs]class DeviceClosed(GPIOZeroError):
"Error raised when an operation is attempted on a closed device"
[docs]class BadEventHandler(GPIOZeroError, ValueError):
"Error raised when an event handler with an incompatible prototype is specified"
[docs]class BadWaitTime(GPIOZeroError, ValueError):
"Error raised when an invalid wait time is specified"
[docs]class BadQueueLen(GPIOZeroError, ValueError):
"Error raised when non-positive queue length is specified"
[docs]class BadPinFactory(GPIOZeroError, ImportError):
"Error raised when an unknown pin factory name is specified"
[docs]class ZombieThread(GPIOZeroError, RuntimeError):
"Error raised when a thread fails to die within a given timeout"
[docs]class CompositeDeviceError(GPIOZeroError):
"Base class for errors specific to the CompositeDevice hierarchy"
[docs]class CompositeDeviceBadName(CompositeDeviceError, ValueError):
"Error raised when a composite device is constructed with a reserved name"
[docs]class CompositeDeviceBadOrder(CompositeDeviceError, ValueError):
"Error raised when a composite device is constructed with an incomplete order"
[docs]class CompositeDeviceBadDevice(CompositeDeviceError, ValueError):
"Error raised when a composite device is constructed with an object that doesn't inherit from :class:`Device`"
[docs]class EnergenieSocketMissing(CompositeDeviceError, ValueError):
"Error raised when socket number is not specified"
[docs]class EnergenieBadSocket(CompositeDeviceError, ValueError):
"Error raised when an invalid socket number is passed to :class:`Energenie`"
[docs]class SPIError(GPIOZeroError):
"Base class for errors related to the SPI implementation"
[docs]class SPIBadArgs(SPIError, ValueError):
"Error raised when invalid arguments are given while constructing :class:`SPIDevice`"
[docs]class SPIBadChannel(SPIError, ValueError):
"Error raised when an invalid channel is given to an :class:`AnalogInputDevice`"
[docs]class SPIFixedClockMode(SPIError, AttributeError):
"Error raised when the SPI clock mode cannot be changed"
[docs]class SPIInvalidClockMode(SPIError, ValueError):
"Error raised when an invalid clock mode is given to an SPI implementation"
[docs]class SPIFixedBitOrder(SPIError, AttributeError):
"Error raised when the SPI bit-endianness cannot be changed"
[docs]class SPIFixedSelect(SPIError, AttributeError):
"Error raised when the SPI select polarity cannot be changed"
[docs]class SPIFixedWordSize(SPIError, AttributeError):
"Error raised when the number of bits per word cannot be changed"
class SPIFixedRate(SPIError, AttributeError):
"Error raised when the baud-rate of the interface cannot be changed"
[docs]class SPIInvalidWordSize(SPIError, ValueError):
"Error raised when an invalid (out of range) number of bits per word is specified"
[docs]class GPIODeviceError(GPIOZeroError):
"Base class for errors specific to the GPIODevice hierarchy"
[docs]class GPIODeviceClosed(GPIODeviceError, DeviceClosed):
"Deprecated descendent of :exc:`DeviceClosed`"
[docs]class GPIOPinInUse(GPIODeviceError):
"Error raised when attempting to use a pin already in use by another device"
[docs]class GPIOPinMissing(GPIODeviceError, ValueError):
"Error raised when a pin specification is not given"
[docs]class OutputDeviceError(GPIODeviceError):
"Base class for errors specified to the OutputDevice hierarchy"
[docs]class OutputDeviceBadValue(OutputDeviceError, ValueError):
"Error raised when ``value`` is set to an invalid value"
[docs]class PinError(GPIOZeroError):
"Base class for errors related to pin implementations"
[docs]class PinInvalidFunction(PinError, ValueError):
"Error raised when attempting to change the function of a pin to an invalid value"
[docs]class PinInvalidState(PinError, ValueError):
"Error raised when attempting to assign an invalid state to a pin"
[docs]class PinInvalidPull(PinError, ValueError):
"Error raised when attempting to assign an invalid pull-up to a pin"
[docs]class PinInvalidEdges(PinError, ValueError):
"Error raised when attempting to assign an invalid edge detection to a pin"
[docs]class PinInvalidBounce(PinError, ValueError):
"Error raised when attempting to assign an invalid bounce time to a pin"
[docs]class PinFixedPull(PinError, AttributeError):
"Error raised when attempting to set the pull of a pin with fixed pull-up"
[docs]class PinEdgeDetectUnsupported(PinError, AttributeError):
"Error raised when attempting to use edge detection on unsupported pins"
[docs]class PinUnsupported(PinError, NotImplementedError):
"Error raised when attempting to obtain a pin interface on unsupported pins"
[docs]class PinSPIUnsupported(PinError, NotImplementedError):
"Error raised when attempting to obtain an SPI interface on unsupported pins"
[docs]class PinPWMError(PinError):
"Base class for errors related to PWM implementations"
[docs]class PinPWMUnsupported(PinPWMError, AttributeError):
"Error raised when attempting to activate PWM on unsupported pins"
[docs]class PinPWMFixedValue(PinPWMError, AttributeError):
"Error raised when attempting to initialize PWM on an input pin"
[docs]class PinUnknownPi(PinError, RuntimeError):
"Error raised when gpiozero doesn't recognize a revision of the Pi"
[docs]class PinMultiplePins(PinError, RuntimeError):
"Error raised when multiple pins support the requested function"
[docs]class PinNoPins(PinError, RuntimeError):
"Error raised when no pins support the requested function"
[docs]class PinInvalidPin(PinError, ValueError):
"Error raised when an invalid pin specification is provided"
[docs]class GPIOZeroWarning(Warning):
"Base class for all warnings in GPIO Zero"
[docs]class DistanceSensorNoEcho(GPIOZeroWarning):
"Warning raised when the distance sensor sees no echo at all"
[docs]class SPIWarning(GPIOZeroWarning):
"Base class for warnings related to the SPI implementation"
[docs]class SPISoftwareFallback(SPIWarning):
"Warning raised when falling back to the SPI software implementation"
class PWMWarning(GPIOZeroWarning):
"Base class for PWM warnings"
class PWMSoftwareFallback(PWMWarning):
"Warning raised when falling back to the PWM software implementation"
[docs]class PinWarning(GPIOZeroWarning):
"Base class for warnings related to pin implementations"
[docs]class PinFactoryFallback(PinWarning):
"Warning raised when a default pin factory fails to load and a fallback is tried"
class NativePinFactoryFallback(PinWarning):
"Warning raised when all other default pin factories fail to load and NativeFactory is used"
[docs]class PinNonPhysical(PinWarning):
"Warning raised when a non-physical pin is specified in a constructor"
[docs]class ThresholdOutOfRange(GPIOZeroWarning):
"Warning raised when a threshold is out of range specified by min and max values"
[docs]class CallbackSetToNone(GPIOZeroWarning):
"Warning raised when a callback is set to None when its previous value was None"
class AmbiguousTone(GPIOZeroWarning):
"Warning raised when a Tone is constructed with an ambiguous number"