Add rpi_gpio platform to switch

.coveragerc

@@ -7,6 +7,8 @@ omit =
     homeassistant/external/*
 
     # omit pieces of code that rely on external devices being present
+    homeassistant/components/switch/rpi_gpio.py
+
     homeassistant/components/arduino.py
     homeassistant/components/*/arduino.py
 

homeassistant/components/switch/rpi_gpio.py

@@ -0,0 +1,124 @@
+"""
+homeassistant.components.switch.rpi_gpio
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Allows to control a swith using Raspberry GPIO.
+Support for switching Raspberry GPIO pins on and off.
+
+Configuration:
+
+switch:
+  platform: rpi_gpio
+  ports:
+    11: Fan Office
+    12: Light Desk
+
+Variables:
+
+ports
+*Required
+An array specifying the GPIO ports to use and the name usd in the fronted.
+
+"""
+import logging
+try:
+    import RPi.GPIO as GPIO
+except ImportError:
+    GPIO = None
+from homeassistant.helpers.entity import ToggleEntity
+from homeassistant.const import (DEVICE_DEFAULT_NAME,
+                                 EVENT_HOMEASSISTANT_START,
+                                 EVENT_HOMEASSISTANT_STOP)
+
+_LOGGER = logging.getLogger(__name__)
+DEMO = True
+
+
+# pylint: disable=unused-argument
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """ Sets up the Raspberry PI GPIO switches. """
+    if not DEMO and GPIO is None:
+        _LOGGER.error('RPi.GPIO not available. rpi_gpio switches ignored.')
+        return
+
+    switches = []
+    ports = config.get('ports')
+    for port_num, port_name in ports.items():
+        switches.append(RPiGPIOSwitch(port_name, port_num))
+    add_devices(switches)
+
+    def cleanup_gpio(event):
+        """ Stop the Arduino service. """
+        GPIO.cleanup()
+
+    def prepare_gpio(event):
+        """ Start the Arduino service. """
+        hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, cleanup_gpio)
+
+    hass.bus.listen_once(EVENT_HOMEASSISTANT_START, prepare_gpio)
+
+
+class RPiGPIOSwitch(ToggleEntity):
+
+    '''
+    Represents a switch that can be toggled using Raspberry Pi GPIO.
+    '''
+
+    def __init__(self, name, gpio):
+        self._name = name or DEVICE_DEFAULT_NAME
+        self._state = False
+        self._gpio = gpio
+        if not DEMO:
+            GPIO.setup(gpio, GPIO.OUT)
+
+    @property
+    def name(self):
+        """ The name of the port """
+        return self._name
+
+    @property
+    def should_poll(self):
+        """ No polling needed """
+        return False
+
+    @property
+    def is_on(self):
+        """ True if device is on. """
+        return self._state
+
+    def turn_on(self, **kwargs):
+        """ Turn the device on. """
+        if self._switch(True):
+            self._state = True
+        self.update_ha_state()
+
+    def turn_off(self, **kwargs):
+        """ Turn the device off. """
+        if self._switch(False):
+            self._state = False
+        self.update_ha_state()
+
+    def _switch(self, new_state):
+        """ Execute the actual commands """
+        _LOGGER.info('Setting GPIO %s to %s', self._gpio, new_state)
+        try:
+            if not DEMO:
+                GPIO.output(self._gpio, 1 if new_state else 0)
+        except:
+            _LOGGER.error('GPIO "%s" output failed', self._gpio)
+            return False
+        return True
+
+    @property
+    def device_state_attributes(self):
+        """ Returns device specific state attributes. """
+        return None
+
+    @property
+    def state_attributes(self):
+        """ Returns optional state attributes. """
+        data = {}
+        device_attr = self.device_state_attributes
+        if device_attr is not None:
+            data.update(device_attr)
+        return data

requirements.txt

@@ -100,3 +100,6 @@ https://github.com/rkabadi/temper-python/archive/master.zip
 
 # PyEdimax
 https://github.com/rkabadi/pyedimax/archive/master.zip
+
+# RPI-GPIO platform
+RPi.GPIO>=0.5.11