Tutorials:openAALGPIO

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Usage for the GPIO ports in openAAL.

ahead

In the project ahead the GPIO a used as follows:

header name wiringPI openAAL
17 3V3 - -
19 SDA0 12 feeler
21 SCL0 13 LED
23 GPIO7 14 not connected
25 0V0 - -

Feeler

  • press three seconds or longer - pi will shut-down your
  • press less then three seconds - not allocated at the moment

LED

  • off - pi is switched off
  • on - pi is switched on and openAAL is running without errors
  • fast flashing - pi is powering down
  • slow flashing - not allocated at the moment
  • error flashing codes (L = long; S = short)
    • L-S-L - pi is going to explode
    • ...