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Questions tagged [sysfs]

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EasyDriver stepper motor through sysfs not moving

I'm trying to activate a stepper motor using easydriver from here using sysfs and C, but it doesn't move. I connected my ...
Cris's user avatar
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sysfs blocks gpio pins after one minute from restart

I am using Raspberry pi 4b with Linux raspberrypi 5.10.63-v7l+. I am writing simple userspace program for control one GPIO by ioctl() (in my case GPIO 13 for example). However program responses: ...
Aro Math's user avatar
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Ubuntu 19.10 64-bit on Raspberry PI 4: How to unlock 100 MGz as min cpu frequency?

Is there way to unlock min cpu frequency for Ubuntu 19.10 64-bit for raspberry pi? First, this linux does't have /boot/config.txt similar to raspbian or ubuntu 18.04 from berryboot Next, the ...
Professor Pro's user avatar