# The MIT License (MIT)
#
# Copyright (c) 2017 Dean Miller for Adafruit Industries
#
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# 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
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# THE SOFTWARE.
# pylint: disable=missing-docstring,invalid-name,too-many-public-methods
"""
`adafruit_seesaw.digitalio`
====================================================
"""
import digitalio
__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_seesaw.git"
[docs]class DigitalIO:
"""CircuitPython-compatible class for digital I/O pins
This class is intended to be a compatible subset of `digitalio.DigitalInOut`.
Due to technical limitations, PULL_DOWNs are not supported.
:param ~adafruit_seesaw.seesaw.Seesaw seesaw: The device
:param int pin: The pin number on the device
"""
def __init__(self, seesaw, pin):
self._seesaw = seesaw
self._pin = pin
self._drive_mode = digitalio.DriveMode.PUSH_PULL
self._direction = digitalio.Direction.INPUT
self._pull = None
self._value = False
def deinit(self):
pass
[docs] def switch_to_output(self, value=False, drive_mode=digitalio.DriveMode.PUSH_PULL):
"""Switch the pin to output mode"""
self._seesaw.pin_mode(self._pin, self._seesaw.OUTPUT)
self._seesaw.digital_write(self._pin, value)
self._drive_mode = drive_mode
self._pull = None
@property
def direction(self):
"""Retrieve or set the direction of the pin"""
return self._direction
@direction.setter
def direction(self, value):
if value == digitalio.Direction.OUTPUT:
self.switch_to_output()
elif value == digitalio.Direction.INPUT:
self.switch_to_input()
else:
raise ValueError("Out of range")
self._direction = value
@property
def value(self):
"""Retrieve or set the value of the pin"""
if self._direction == digitalio.Direction.OUTPUT:
return self._value
return self._seesaw.digital_read(self._pin)
@value.setter
def value(self, val):
if not 0 <= val <= 1:
raise ValueError("Out of range")
self._seesaw.digital_write(self._pin, val)
self._value = val
@property
def drive_mode(self):
"""Retrieve or set the drive mode of an output pin"""
return self._drive_mode
@drive_mode.setter
def drive_mode(self, mode):
pass
@property
def pull(self):
"""Retrieve or set the pull mode of an input pin"""
return self._pull
@pull.setter
def pull(self, mode):
if self._direction == digitalio.Direction.OUTPUT:
raise AttributeError("cannot set pull on an output pin")
if mode == digitalio.Pull.DOWN:
self._seesaw.pin_mode(self._pin, self._seesaw.INPUT_PULLDOWN)
elif mode == digitalio.Pull.UP:
self._seesaw.pin_mode(self._pin, self._seesaw.INPUT_PULLUP)
elif mode is None:
self._seesaw.pin_mode(self._pin, self._seesaw.INPUT)
else:
raise ValueError("Out of range")