gpioconfig
This project is a small Python library that allows to check whether a pair of GPIO pins on the Raspberry Pi are shorted.
It can be used in combination with jumpers to change the configuration of the Pi on boot.
I use it because I use my Pi in different locations that require different network configurations, for instance sometimes I want it to act as a WiFi access point, and sometimes as a client, sometimes I want it to connect to my VPN and redirect all traffic through it, sometimes not, and so on. This library allows me to control this behaviour simply by putting a few jumpers on the GPIO pins, without having to log into the Pi (which requires a serial cable if it has no network connection...)
Usage
This module requires the RPi.GPIOmodule to be installed (it is present by default in
Raspbian). As all programs interacting with GPIO pins, python must be run as root when
using this module.
Then use the get_status function to get the state of a pair:
import gpioconfig as gc
shorted = gc.get_status(pair_number)pair_number must be one of the following:
1for pins number (39, 40) (the closest to the USB ports)2for pins number (37, 38)3for pins number (35, 36)4for pins number (33, 34)5for pins number (31, 32)6for pins number (29, 30)
You can have a look at the example.py script, that runs a command if a given pair is
connected, and a different one otherwise. Example run:
$ sudo python example.py 1 'echo "Pair 1 is connected!"' 'echo "Pair 1 is not connected"'
Pair 1 is connected!