[riot-devel] GNRC with sleepy nodes

Daniel Evans photonthunder at gmail.com
Tue Nov 21 00:47:53 CET 2017

Issues #7743 and #7332 both discuss the problem.


> On Nov 20, 2017, at 12:13 PM, Robert Hartung <hartung at ibr.cs.tu-bs.de> wrote:
> Xtimer is not guaranteed to be based on timers that keep running in low power modes. Therefore sleeping is not supported on most devices.
> Am 20.11.2017 um 21:05 schrieb Francisco Molina:
>> >Hi,
>> >
>> >since the timers you mentioned are dependent on xtimer and since xtimer has
>> >some known issues with power management (what those are directly I can't
>> >say due to my own lack of knowledge there, some hardware person on this
>> >list might give you more detailed information on that) in the default
>> >configuration, sleeping is not currently possible with GNRC on
>> >ATSAMR21G18A-based
>> >platforms (at least, as I understand it in the default configuration).
>> >Cheers,
>> >Martine
>> What are the xtimer know issues with power management? I did a quick search at opened issues and coudln't find any directly realted to power management and xtimer. Could anyone expand on this? Thank you. Cheers!
>> Francisco
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