Not able to detect STM32H743 in MATLAB simulink

[DJ_IND]

Hi,

I am using Nucleo-144 boards in my project where I have changed the clock source for STLINK IC to external crystal using STLINK firmware upgrade tool. Before it was HSI/2 =8MHz. Now I am trying to revert the configuration back to 8MHz but I am not able to detect the Nucleo board now with 8 MHz. Is this known issue?

I tried configuring it back to 5MHz using tool below and it works fine , detects all the time in MATLAB. But not with 8MHz (HSI/2). 

How to revert back the configuration and make the board detectable?

[mƎALLEm · Accepted solution]

Hello,

Do you mean that you are not able to revert back to HSI/2 =8MHz?

If you are able to see this value after reverting back the settings: 

this is not a board issue but may be to your MATLAB Simulink config: clock config for example? forget to revert back the clock to 8MHz in Matlab simulink?

For Matlab/simulink questions please ask them in their forum: https://www.mathworks.com/matlabcentral/content/communities.html

[DJ_IND]

Yes. I probes the R5 resistor on Nucleo-144, I am getting 8MHz clock. But I am not able to connect with STM32 using MATLAB simulink. 

[mƎALLEm]

In that case it's not a board issue nor the STLINK module but it's a Matlab/simulink environement issue that we don't support. As I said please ask the question in their forums.

[DJ_IND]

But it was working fine with 8MHz prior change to 5MHz (HSE/5). 

[mƎALLEm]

As it was reverted back to "HSI/2= 8MHz" with STLINK firmware upgrade tool and you are measuring 8MHz so this is not a board issue. Check your clock config in the Matlab/Simulink.

And again, for Simulink questions please ask them in the Matlab/Simulink forum.