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I have 2 different intel UpBoards. Both have 40 pins. I have tried to access pins using:

 echo 26 > /sys/class/gpio/export
 echo out > /sys/class/gpio/gpio26/direction
 echo 1 > /sys/class/gpio/gpio26/value

These commands let us to configure physical pin 37(Linux GPIO number 26) from this link

My first upboard is working with these commands very well. And when I run the command:

 ls /sys/class/gpio/

the output:

 gpiochip0 gpiochip267 gpiochip310 gpiochip357 gpiochip434 export unexport

But when I run the same command in other upboard the output is:

 export gpiochip225 gpiochip228 gpiochip314 gpiochip341 gpiochip414 unexport

As we see from the output the second one doesn't have gpiochip0. And I think this occurs the problem why pins are not accesable. Because the other gpiochip files are not for 40 pins upboard. How can I fix this problem. The same problem is also mentioned here but no solution. same problem

Yunus Temurlenk
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1 Answers1

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The problem was about that I didnt add the repository. I just installed Ubuntu and I didn't do the next step which is in here The necessary steps are:

sudo add-apt-repository ppa:ubilinux/up
sudo apt update
sudo apt-get autoremove --purge 'linux-.*generic'
sudo apt-get install linux-image-generic-hwe-16.04-upboard
sudo reboot
Yunus Temurlenk
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