Traces Format

Embedded Security ChipWhisperer Software
1

Hi,

I have a ChipWhisperer since few days and I’m able to compile/ load / run my programs.
I’m also able to get the traces from the openADC through some Python scripting.
I get traces in double format from -1.0 and 1.0. But I’d like to get the raw data from the openADC which must be a signed byte (8 bit or maybe 16 bits ?). But I can’t figure out how to do that.
Is it possible to get this raw data?

Thanks, regards.

2

Hi CharlesG,

The data format is automatically converted to floating point pretty early on… it’s a 10-bit ADC value however. The easiest method of converting back would be to use this formula:

round(dataPoint * 1024 + 512)

This will give you the original ADC reading.

Regards,

  • Colin