Problem with capture for STM32F1

Embedded Security ChipWhisperer Software
1

Hello,

I am trying to capture traces on the CW308T UFO board with an STM32F1 target.

I already tried with an XMEGA and an STM32F3 targets on this board and everything worked well.

Concerning the STM32F1, the programming succeeds but when I try to capture with the CWCapture software, I get the following error :

WARNING:Response length from target shorter than expected (0<34): “”.
WARNING:Timeout in OpenADC capture(), trigger FORCED

As said here https://wiki.newae.com/CW308T-STM32F, I adjusted the clock frequency to 8MHz.

As suggested on some related topics, I tried producing the binary with different versions of the arm-none-eabi-gcc compiler but it didn’t resolve the problem.

Here is the configuration of my board.

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image02016×1512 1020 KB

Can anyone help ? Thanks for reading.

2

Hi,

Can you try uploading the .elf file from the F1 build? That should help me narrow down whether this is a compiler issue or not.

Thanks,

Alex

3

Hi Alex,

I am not allowed to add attachments as a new user. Here is a link for the .elf on google drive.

4

Hi,

Sorry I haven’t had much of a chance to look at this. I did take a look at the binary and it doesn’t appear to have the issue that changing compilers will solve. I’ll take a look at the code for the F1 and make sure everything’s up to date and correct.

Alex

5

Hi,

Did you set the clock frequency back to 7.37MHz after programming?

Alex

6

Hi Alex,

Thanks for your reply. No I didn’t, the page I linked before says we must put on 8MHz. Do you suggest to try the 7.37 frequency ?

Ines

7

Hi Ines,

Sorry again for the late reply. You’ll need to change back to 7.37MHz after programming the device. I’ve updated the wiki since this wasn’t clear before.

Alex