Kenji Arai
In the past, you need modify rtc_api.c in mbed-dev source code. From this revision, you can just use RTC function all of conditions (Normal, Reset, Stand-by, Power OFF).
Note
From now on, you do NOT need any modification for mbed-dev library because STM team updates rtc_api.c source code and support RTC function under reset & standby condition includes power off condition (You need additional VBAT back-up hardware).
Please refer following NOTE information.
/users/kenjiArai/notebook/nucleo-series-rtc-control-under-power-onoff-and-re/
Revisions of mbed_app.json
| Revision | Date | Message | Actions |
|---|---|---|---|
| 10:806cfec92eb6 | 2020-07-18 | run on mbed-os6.2.0 (mbed_version.h = os5.15.4) | File Diff Annotate |