[riot-notifications] [RIOT-OS/RIOT] cpu/nrf5x: implement wdt peripheral driver (#11556)
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Wed Sep 11 16:26:45 CEST 2019
I tested with my [`tests/periph_wdt`](https://github.com/RIOT-OS/RIOT/blob/4d98bf39d143c13e7c717680d64689ca832ee73c/tests/periph_wdt/main.c) and basic watchdog operation is working well.
I had to disable the window mode test as the assert would fail. (Maybe we should introduce `FEATURES_PROVIDED += periph_wdt_window` too)
> On nrf, it's not possible to stop the watchdog once it's started so when setting up a timeout callback, the CPU is reset in all the case after 2 cycles of 32768kHz clock.
I thought this would still be enough to call `wdt_kick()`, but this doesn't seem to be the case. Even when putting `NRF_WDT->RR = WDT_RR_RR_Reload;` directly into `isr_wdt()` tha board would reset.
So I wonder what the callback can be used for.
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