Elevate your permissions to root user to allow IO access

sudo -i
Setup to control pin as output

Substitute 23 in the following commands for your GPIO number (GPIO, not pin number)


echo "23" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio23/direction
Control Output State

echo "1" > /sys/class/gpio/gpio23/value
echo "0" > /sys/class/gpio/gpio23/value
Setup to read pin as an input

Substitute 23 in the following commands for your GPIO number (GPIO, not pin number)


echo "23" > /sys/class/gpio/export
echo "in" > /sys/class/gpio/gpio23/direction
Read its state

cat /sys/class/gpio/gpio23/value

To Release A Pin Afterwards


echo "23" > /sys/class/gpio/unexport

 

USEFUL?
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Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.