[riot-notifications] [RIOT-OS/RIOT] drivers/periph_common: dac: add dac_play() (#13908)

chrysn notifications at github.com
Mon Nov 30 13:48:22 CET 2020

> If dac_dds_is_playing() returns false when it's our turn to fill the buffer, we know an underrun occurred.

That'd still be hard to query atomically. How about `dac_dds_play` return the previous status of is_playing?

Agreed on the periph part and the "avoid making [it] more complex 'just in case'".

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