Hardware Reference
In-Depth Information
bone#
cd /sys/class/gpio/
bone#
echo 50 > export
bone#
ls
gpio50 gpiochip0 gpiochip32 gpiochip64 gpiochip96
bone#
cd gpio50
bone#
ls
active_low direction edge power subsystem uevent value
bone#
cat direction
in
By default,
P9_14
is set as an input. Switch it to an output and turn it on:
bone#
echo out > direction
bone#
echo 1 > value
bone#
echo 0 > value
The LED turns on when a
1
is written to
value
and turns off when a
0
is written.
