Questions tagged [sysfs]

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GPIO callbacks in any language

I know the linux kernel has a language agnostic GPIO interface through /sys/class/gpio which can be manipulated with echo, cat, etc. How can this be used to create event driven callbacks ...
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Overclocking - CPU Frequency Measurement Accuracy: vcgencmd vs cpuinfo_cur_freq

As a follow-up to this question: Raspberry Pi B+ Overclocking: Force Turbo not working I had trouble getting force turbo to work. I was using the command: sudo vcgencmd measure_clock arm to get the ...
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