AXIOMTEK NA150, User Manual, Page: 32 / 34

NA150 Series Network Appliance U
ser’s Manual
28 Software User Guide
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Disconnect WiFi connection
$ wpa_cli -i wlan0 terminate
3.8 How to use GPIO to control status LED and push
buttons
NA150 has 2 push buttons and 1 status led can be controlled via GPIO pins
Led control
# echo 64 > /sys/class/gpio/export
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enable gpio pin
# echo out > /sys/class/gpio/gpio64/direction
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change direction to out
# echo 0 > / sys/class/gpio/gpio64/value
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trun on the led
# echo 1 > / sys/class/gpio/gpio64/value
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trun off the led
Get push button status(SW1 is gpio pin 32, SW2 is gpio pin 38)
# echo 32 > /sys/class/gpio/export

enable gpio pin
# cat /sys/class/gpio/gpio32/value
If button is held, the value is 1
If button is released, the value is 0