matthiasbock edited this page Sep 22, 2014 · 3 revisions

Code by Tyler Nichols from

Required for

Implements

Raspberry Pi pins:

Raspberry Pi pin layout:

Ideally we would use the hardware SPI slave, however it seems, it is not broken out on the Raspberry Pi rev. 2 board:

  • datasheet section BSC/SPI slave
  • 4x GPIO: 18 to 21

Using wiringPi it takes dozens of microseconds, until an interrupt service routine is actually invoked after an edge falls. It needs to be accomplished within not more than 5us.

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