Add basic version of code

gpio_components/input_devices.py

@@ -0,0 +1,18 @@
+from RPi import GPIO
+
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+
+class InputDevice(object):
+    def __init__(self, pin):
+        self.pin = pin
+        GPIO.setup(pin, GPIO.IN, GPIO.PUD_UP)
+
+    def is_pressed(self):
+        return GPIO.input(self.pin) == 0
+
+
+class Button(InputDevice):
+    pass