[riot-notifications] [RIOT-OS/RIOT] CPU SAML21: fix timers frequency when using slow clocks (#16446)

Antonio Galea notifications at github.com
Wed May 5 15:13:43 CEST 2021


@ant9000 commented on this pull request.



> +    _gclk_setup(SAM0_GCLK_TIMER, GCLK_GENCTRL_GENEN | GCLK_GENCTRL_SRC_OSC16M
+                | GCLK_GENCTRL_DIV(CLOCK_CORECLOCK/sam0_gclk_freq(SAM0_GCLK_TIMER)));

I've measured power usage, the gain from this last solution is quite negligible, at about 0.1mA (2.52mA with timer clock fed from OSC16, 2.42mA with timer fed from DFLL48M).

Looks cleaner to me, though.

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