Chipwhisperer Pro Software Error

Embedded Security ChipWhisperer Software
1

Hi All,

I just bought the Chipwhisperer Pro and encountered the following error while trying to connect to it via connect_cwlite_simpleserial.py:

Screenshot%20from%202019-06-10%2009-00-52
Screenshot%20from%202019-06-10%2009-00-521249×273 53 KB

Any idea if this error is critical or can I just ignore it?
Thanks.

Regards,
Melvin.

2

Hi Melvin,

It might be ok, see this thread. Are you able to run the tutorials?

Jean-Pierre

1 Like
3

Hi Jean,

Thanks for the reply.
I’m not sure if I’m doing the tutorials correctly because I’m kinda stuck at VCC glitching.
I’ll follow up on the thread you pointed me to.
Thanks.

Regards,
Melvin.

4

Hi Melvin,

I should be able to give a bit more information about this error popping up. The baud value for one of the CWPro only features is uninitialized when the system first starts up. The software side of ChipWhisperer reads all of the hardware’s values on startup, then sets them to default values. Since this read is done before the software has a chance to initialize this value, it throws an error. The write initializing this value is still done, just not before the software has a chance to read it and report an error.

Basically, the system is reporting an error that’s immediately fixed after it’s reported.

EDIT: A fix should be in the develop branch now as well.

Alex