Check if power source is already configured on STM32H7

[opkaizen]

If the power source is already configured, writing on the register can cause a deadlock if the configuration does not match, which can be tricky to fix. This is the check that is done in the STM32 HAL library to avoid this.

I got this issue because the STM32H757 demo board and the STM32H745XI discovery board use the SMPS, and even though the power on reset configuration is LDO|SMPS, writing on LDO deadlocked my boards.

[danielinux]

Hi @opkaizen, thanks for spotting this. Could you please get in touch with [email protected] to set up a contributor agreement?

[danielinux]

hi @opkaizen did you get in touch with us yet regarding the CA?

[opkaizen]

Hi, not yet, I will soon :)

[danielinux]

The CA process did not go through. See zd17861.