Mocks GPIO pins of a Raspberry PI.
It uses two directories:
/tmp/gpio/in //pins that are exported as inputs
/tmp/gpio/out //pins written by the app
and a JSON file with the current config:
/tmp/gpio/meta.json
Files use names gpio<pin#>, i.e., gpio3, and contain 1 or 0.
An external app can just write files in /tmp/gpio/in to trigger poll
actions.
- Source: