FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Can't connect to STM32H755 after changing boot option byte

mt7883
Visitor

‎2025-03-17 12:20 PM

Hello,

after changing one of the BCM4/7 boot option bytes of my Nucleo STM32H755 board with STM32CubeProgrammer, I can't connect to the MCU any more. When trying to connect with STM32CubeProgrammer, I get

Error: Unable to read device id from ROM table

Error: ST-LINK error (DEV_CONNECT_ERR)

 

Is this related to the change in option bytes or did the board get damaged somehow?

Thanks and regards,

Martin

Labels:
0 Kudos
1 REPLY 1
TDK
Guru

‎2025-03-17 1:24 PM

Try connecting using access port 3 instead of access port 0.

If you feel a post has answered your question, please click "Accept as Solution".
0 Kudos
Top