easy-gpio
Easy, remote GPIO control via sysfs using Flask Web API
Setup
Add execute privilege
chmod 711 gpio.py
Run as superuser
sudo python gpio.py
You can also redirect stderr to a file and run server in the background
sudo python gpio.py 2> gpio.log &
Usage
Export GPIO to userspace
device-ip/gpioX/export
Set direction (in or out)
device-ip/gpioX/direction/out
Set value (0 or 1)
device-ip/gpioX/value/1
Check value
device-ip/gpioX/value
Unexport GPIO
device-ip/gpioX/unexport
Concrete example
Raspberry Pi 3 will serve as an example device. 192.168.0.100 is the IP address assigned to the device.
Find pair of GPIOs using official pinout.
I have chosen GPIO2 and GPIO3 and connected them using jumper cable. GPIO2 will be set as an output, and GPIO3 as an input - this way, I will be able to change GPIO3 value using GPIO2.
Export GPIO2 and GPIO3
192.168.0.100/gpio2/export192.168.0.100/gpio3/export
Set GPIO2 as output, GPIO3 as input
192.168.0.100/gpio2/direction/out192.168.0.100/gpio3/direction/in
Set GPIO2 value to 1, then check GPIO3 value (1 if connected properly)
192.168.0.100/gpio2/value/1192.168.0.100/gpio3/value
Set GPIO2 value to 0, notice that GPIO3 value has changed too
192.168.0.100/gpio2/value/0192.168.0.100/gpio3/value
You can use these GPIOs to turn on/off and control devices, blink LEDs etc.