Advantech ROM-7510, Руководство пользователя

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ROM-7510 User Manual 32
You can use “ls” to list all GPIO devices, and you should also see GPIO ports in the
above table.
Example of a GPIO test procedure A:
Connect GPIO0 with GPIO4. Set GPIO0 GPO (out)
Set GPIO0 GPO value “1”
procedure B:
Set GPIO4 GPI (in)
in
Get GPIO4 GPI value
As you can see in the above procedure A and B tests, we set gpio0 as GPO and
GPIO4 as GPI. Once we send data out from GPIO0, it should be able to receive the
same data from GPIO4.
GPIO5 gpio68 in
GPIO6 gpio101 in
GPIO7 gpio69 in
# cd /sys/class/gpio
# echo 97 > export
# echo 218 > export
# echo 98 > export
# echo 219 > export
# echo 100 > export
# echo 68 > export
# echo 101 > export
# echo 69 > export
# echo out > ./gpio97/direction
# cat ./gpio97/direction
out
# echo 1 > ./gpio97/value
# echo in > ./gpio100/direction
# cat ./gpio100/direction
# cat ./gpio100/value
1