[riot-notifications] [RIOT-OS/RIOT] sam0: Implement watchdog driver (#11520)

benpicco notifications at github.com
Mon May 13 23:24:15 CEST 2019


I decided to use GCLK2 exactly because RTT and RTC also configure it to run at 1024 Hz, so if those modules are used no change in configuration is required.

I agree that the GCLK situation is quite a mess. We could require that certain GCLKs can always be expected to run at a certain frequency (looks like we need 48MHz for USB, 1kHz for RTC & RTT, maybe 1 MHz for timer).

Something in the likes of https://github.com/zephyrproject-rtos/zephyr/pull/15585 would certainly be nice to have.

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