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Problem GPIO on Orange PI 3G-IOT A

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Post time 2019-5-6 03:46:45 | Show all posts |Read mode
Hello,
The GPIO pin does not work when I execute the command:
# echo "-wdir 141 1"> / sys / devices / virtual / misc / mtgpio / pin
# echo "-wout 141 1"> / sys / devices / virtual / misc / mtgpio / pin
theses commands are executed successfully without error.

The result of status change
# cat / sys / devices / virtual / misc / mtgpio / pin | grep 141
but the pine does not come out of 3.3V voltage. My test LED does not light up.

I tested all GPIO pins unsuccessfully.

Can you help me please?

Thank you.


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