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I want to manipulate my gpios on Beaglebone black... Example:

GPIO.setup("P8_11", GPIO.IN)

it gives back the error mentioned in the title: 

ValueError: Set gpio mode failed, missing file or invalid permissions.

Thanks for help

Ben Jo
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1 Answers1

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This seems to be a problem with u-boot on the BBB. The following hack worked for me:

sudo dd if=/dev/zero of=/dev/mmcblk1 bs=1M count=100

Run that on the BBB, then do a hard reset. This solution came from this GitHub issue.

srlm
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    You're gonna ruin your system that way. If you want to erase u-boot, you should write zeros only in the first 1...4Mb (depending on BBB release/batch) ― just before the first partition. So, even if you envision this as the only solution (which is false), you should warn people about the sub sequences. – SergeyM Dec 31 '20 at 19:01
  • Fair enough. Like I said, it worked for me but as always it's do at your own risk. – srlm Jan 18 '21 at 02:47