Chipwhisperer-Husky FIFO is empty

Embedded Security ChipWhisperer Hardware
1

Hello.

I’m trying to collect waveforms using a chipwhisperer Husky and a chipshiserer cw308 UFO board(STM32F303)

chipwhisperer-husky
chipwhisperer-husky1050×1400 203 KB

, but I’m getting the ‘FiFO is empty’ issue.

I referred to GitHub - newaetech/tracewhisperer and,

If using SWO, three pins must be connected:

  • SWDIO/TMS to D0 pin
  • SWCLK/TCLK to D1 pin
  • SWO/TDO to D2 pin

and uploaded the HEX file targeting AES, and executed the code below.

When sending 16byte plain text to target.simpleserial_write(‘p’, text) and getting the value with r = target.simpleserial_read(‘r’, 16),

we see that it outputs the value without any problem, but when we use

raw = scope.trace.read_capture_data()

we see that

assert self.fifo_empty() == False, ‘FIFO is empty’
AssertionError: FIFO is empty

occurs.

I wonder if there is a problem with the pin connections and how to fix it.

2

Which notebook are you running? Are there any errors or warnings prior to this one? More context is needed to diagnose the problem.
The SWO ↔ Dx jumpers are only needed if using TraceWhisperer.