Meet Some problems in load the firmware to STM32H747

[Ashen.11]

Hi,I use SWD to load the firmware to STM32H747,First was good,But when I want to load the firmware second time,I could not load it by st-link V2,I should Short the Boot0 to 3v3,and clear the firmware,Removed the short,and load the firmware again,This is very troublesome,My question is why can't we load the firmware second time.I am very sure I had open the SWD in firmware...Is there any way to fix this?

[Bouraoui Chemli]

Hi @Ashen.1​ 

Try to connect under reset, for more details you can refer to application note AN5286 "STM32H7x5/x7 dual-core microcontroller debugging"

Bouraoui

[Tesla DeLorean]

It likely fails in this way because you screw up the LDO/SMPS or VOS settings. Get those right it will work repeatedly