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Default CSN/CE pins initialised if not used #576

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tekka007 opened this issue Aug 30, 2016 · 1 comment

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tekka007 commented Aug 30, 2016

Issue reported:

https://forum.mysensors.org/topic/4671/arduino-d10-initialized-with-nrf-even-when-not-used-version-2-0-0-stable

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Contributor

tbowmo commented Sep 2, 2016

It's a hardware limitation in the implementation of the SPI interface on atmega328p.

If SS is defined as input, and it goes low, then a master will automatically switch to slave mode.
(ref. atmega328 datasheet section 19.3.2)

tbowmo closed this as completed

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