- http://makezine.com/projects/tutorial-raspberry-pi-gpio-pins-and-python/ (1)
- https://pypi.python.org/pypi/RPi.GPIO (2)
#set up GPIO using BCM numbering :
# This will enable a pull-down resistor on pin 23, and a pull-up resistor on pin 24.
# Now, let’s check to see if we can read them. The Pi is looking for a high voltage on Pin 23 and a low voltage on Pin 24.
GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) GPIO.setup(24, GPIO.IN, pull_up_down=GPIO.PUD_UP)
# A rising-edge is defined by the time the pin changes from low to high, but it only detects the change.
# Similarly, the falling-edge is the moment the pin changes from high to low.
GPIO.wait_for_edge(23, GPIO.RISING) GPIO.wait_for_edge(24, GPIO.FALLING)
A callback function. This is a function that is attached to a specific GPIO pin and run whenever that edge is detected.
The callback function is in a separate thread.
GPIO.add_event_detect(23, GPIO.RISING, callback=printFunction, bouncetime=300)
Events let you remove them from a pin just as easily as you can add them :
Aussi… À documenter [de (2)]:
if GPIO.RPI_REVISION == 0: revision = 'Compute Module' elif GPIO.RPI_REVISION == 1: revision = 'revision 1' elif GPIO.RPI_REVISION == 2: revision = 'revision 2' elif GPIO.RPI_REVISION == 3: revision = 'Model B+' else: revision = '**undetected**'
Autres options :
GPIO.setup(LOOP_IN, GPIO.IN) GPIO.setup(LOOP_OUT, GPIO.OUT)
Cette doc doit exister !