On board ST-LINK/v2 debugging on Nucleo-144 board (STM32H743) - upper flash banks show 0xFF, not real values.

[KBern]

- Keil MDK5 v5.31

- STM32H743

- Nucleo-144 board

- STlink Firmware: STM32 Debug+Mass storage+VCP V2.J35.M26

Bank 0 Sector 0 and 1 I can view in the memory windows

Bank 0 Sectors 2 through 7, as well as all as Bank 1, show up as 0xFF, i.e. I can't view their contents while debugging.

Went through section 3.5 FLASH protection mechanisms in the DM00314099.pdf

every thing looks like the default settings and OK.

The RDP 0 values do not appear to be set?

Question:

Is there some other setting that will let me look at the flash bank values? Or is this just a design limitation?

[Tesla DeLorean]

Not aware of a reason it shouldn't work normally.

You could try looking via STM32 Cube Programmer

The code you have running could also dump data to a console, USART / SWV or whatever, to see what the processor can see from its view point.

The internal FLASH is mapped at two addresses, which are you using?

[TDK]

Are you sure those banks aren't just erased?

Can you view those banks in STM32CubeProgrammer or when not debugging?