5 Commits

Author	SHA1	Message	Date
Benjamin Valentin	3a7aa5d09a	cpu/sam0_common: RTC: add timeout to spurious tamper event ... Errate 2.17.4 says: > Upon enabling the RTC tamper detection feature, a false tamper > detection *can* be reported by the RTC. It turns out that this spurious event is not always generated. If RTC alarm is used and the CPU was previously woken from hibernate by RTC, it *can* happen that the false tamper event is *not* generated. In this case, we will block indefinitely on the mutex. To solve this, add a timeout to the event. Also poll the event instead of using a mutex, as we have already set `PM->SLEEPCFG.bit.SLEEPMODE` at this point.	2021-01-12 17:36:40 +01:00
Benjamin Valentin	0499d016ad	cpu/sam0_common: implement RTC tamper detection	2020-09-17 18:45:50 +02:00
Benjamin Valentin	e32b0783c4	cpu/samd21: define CPU_COMMON_SAMD21 symbol and use it	2020-08-24 16:13:18 +02:00
Benjamin Valentin	d02aa4a6b5	cpu/sam0_common: RTC: use RIOT_EPOCH	2020-08-07 13:24:10 +02:00
Benjamin Valentin	83a56ae666	cpu/sam0_common: merge RTC & RTT implementation ... The RTC and RTT share the same peripheral, so they can also share the same code. This is needed to integrate the Tamper Detection into common RTC/RTT code.	2020-07-31 22:00:09 +02:00