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Thomas Pfeiffer

NanoPi NEO Air: Timing issue in w1-gpio and w1-gpio-board when reading a DS18B20?

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First sorry for starting a similar thread here and in [1]. I try to read a DS18B20, which does not work with Armbian, DietPi, and Friendlyarm's Ubuntu.

 

This morning, my idea was to slow down the CPU - and it worked. In detail: By running some useless cpu consuming python scripts, reading the DS18B20 works fine. As soon as i stop them, reading the sensor immediately fails. So there might be some timing issues in the implementations of w1-gpio and w1-gpio-board. Are there any hints how i can get these issues fixed?

 

Thanks!

Thomas

 

[1] http://www.friendlyarm.com/Forum/viewtopic.php?f=47&t=393

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