Yet another newbie question.
I have got latest debian image on my beagle bone black.
uname - r output: 4.9.45-ti-r57
and I noticed various gpio directory in /sys/class/gpio
when I tried
echo 69 > unexport
it gave me permission denied.
so I changed the permission of unexport file to be 666
and now when I try to use the same command it gives me an error:
-bash: echo: write error: Invalid argument
Can anyone please help...
Ultimately I want to develop a C++ project to toggle LED which is connected
to one of the pins...
Any help regarding this matter is deeply appreciated.
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