GitHub update

I’ve just pushed a couple of things up to the GitHub repository:

  • the LibreOffice presentation I gave at yesterday’s CamJam
  • the RPi.GPIO python library with enhanced hardware interrupt performance.

To install the RPi.GPIO changes type

cd ~
tar xvf GPIO.tgz
sudo python INSTALL

Then to use the improved performance, instead of calling GPIO.wait_for_edge(), call

  • GPIO.edge_detect_init(pin, edge) once at startup
  • GPIO.edge_detect_wait(pin) whenever you want to wait for a GPIO pin event
  • GPIO.edge_detect_term(pin)

GPIO.wait_for_edge() still exists as a wrapper for these 3 functions.  pin and edge are identical parameters as for the standard GPIO.wait_for_edge() call.

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