[riot-notifications] [RIOT-OS/RIOT] cpu/sam0: add support for SAMD5x/SAME5x (#11305)

Dylan Laduranty notifications at github.com
Wed May 29 11:33:23 CEST 2019


> If I source the GCLK5 from e.g. FDPLL1 configured to tun at at 16MHz with prescaler 16, all test run fine and the offset in xtimer_usleep is ~33µs, but this is at the expense of a higher power consumption of around 2 mA.

Enabling an second PLL may not be the best solution especially for the power consumption.

> Offset: ~5µs with GCLK_GENCTRL_DIV(4) & TC_CTRLA_PRESCALER_DIV16 but with burst of 4600µs - and the clock is wrong

Could you elaborate which clock and what is wrong there ? I also tried this conf but I don't have a burst of 4600us.

> Offset: ~5000µs with GCLK_GENCTRL_DIV(120) & TC_CTRLA_PRESCALER_DIV1

I don't get why we have a so much offset with this config...

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