# The MIT License (MIT)
#
# Copyright (c) 2015 Frederic Jacob
#
# 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
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
#
# Simple proxy class for access of the GPIO bus on the Raspberry Pi.
#

import RPi.GPIO as GPIO

IN = GPIO.IN
OUT = GPIO.OUT

class gpio:
    count = 0

    def __init__(self, pin, direction):
        gpio.count = gpio.count + 1
        self.pin = pin
        GPIO.setmode(GPIO.BCM)
        GPIO.setup(pin, direction)

    def __del__(self):
        gpio.count = gpio.count - 1
        if gpio.count == 0:
            GPIO.cleanup()

    def input(self):
        return GPIO.input(self.pin)

    def output(self, value):
        GPIO.output(self.pin, value)

    def on(self):
        GPIO.output(self.pin, 1)

    def off(self):
        GPIO.output(self.pin, 0)

Add the GPIO proxy class for the Raspberry Pi
Add the GPIO proxy class for the Raspberry Pi
