Continued refactoring

events.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# Created by br@re-web.eu, 2015
+
+try:
+    import RPi.GPIO as GPIO
+    gpio_enabled = True
+except ImportError:
+    gpio_enabled = False
+
+
+class Event:
+    def __init__(self, type, value):
+        """type  0: quit
+                 1: keystroke 
+                 2: mouseclick
+                 3: gpio
+        """
+        self.type = type
+        self.value = value
+
+class Rpi_GPIO:
+    def __init__(self, handle_function, input_channels = [], output_channels = []):
+        if gpio_enabled:
+            # Display initial information
+            print("Your Raspberry Pi is board revision " + str(GPIO.RPI_INFO['P1_REVISION']))
+            print("RPi.GPIO version is " + str(GPIO.VERSION))
+
+            # Choose BCM numbering system
+            GPIO.setmode(GPIO.BCM)
+
+            # Setup the input channels
+            for input_channel in input_channels:
+                GPIO.setup(input_channel, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+                GPIO.add_event_detect(input_channel, GPIO.RISING, callback=handle_function, bouncetime=200)
+
+            # Setup the output channels
+            for output_channel in output_channels:
+                GPIO.setup(output_channel, GPIO.OUT)
+                GPIO.output(output_channel, GPIO.LOW)
+        else:
+            print("Warning: RPi.GPIO could not be loaded. GPIO disabled.")
+
+    def teardown(self):
+        if gpio_enabled:
+            GPIO.cleanup()
+
+    def set_output(self, channel, value=0):
+        if gpio_enabled:
+            GPIO.output(channel, GPIO.HIGH if value==1 else GPIO.LOW)