Fix RTC backup register indexing, add target-specific register and boot command#42

Merged

devanlai merged 2 commits intodevanlai:masterfrom

twelho:fix-rtc-bkp-register-indexing

Sep 11, 2021

Commits on Sep 6, 2021

Fix RTC backup register indexing, add target-specific register and boot command
twelho
committed

Commits on Sep 10, 2021

Use only one backup register for CMD_BOOT for stm32f103 based targets
twelho
committed