Crowbar voltage level on breakout board

Embedded Security ChipWhisperer Hardware
1

Using Husky plus, I have connected the Crowbar and POS from the tool to the CW313 breakout board. Post setting up the tutorial commands, I see the voltage level on the breakout board shows 1.2V instead of 3.3V. Is this expected?

Thanks,
Trinath

2

Assuming your target is our SAM4S- its core voltage is 1.2V (see here), so this is normal.

3

Thanks for confirming that. Yes, it was indeed SAM45 target. In order to inject voltage glitches, does the HDR1 SHUNTL and SHUNTH needs to be shorted?
I had the CROWBAR and POS connected. My end goal was to induce voltage glitches, but don’t see any glitch happening monitoring with an Analog Oscilloscope.

4

No, that’s not necessary.

I suggest you go through our fault101 notebooks to learn how to glitch.