[riot-devel] Implementation of a real low power timer for sleep/stop mode (idle thread)

Bernhard Nägele bernhard at naegele-privat.de
Mon Feb 15 12:36:53 CET 2016

Hello everyone,
the STM32L053 has a low power timer which could be configured to be 
clocked by an internal 37kHz oscillator.
For real low power applications it would be a good idea to use this 
timer during sleep/stop mode (for the idle tread).
As far as I know the context switching is performed by the xtimer which 
needs a 1MHz clock in its configuration.
Would it be possible to use such a slow clock for this purpose?

Best regards,

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