open-source-silicon.dev

does anyone know how to make Caravel halt? I want to measure the power used by a chip and I don't want it running for the measurement.

Maybe using nop instruction in a while loop would make it stable during the measurement ?

<@U0172QZ342D>:  Use the `caravel_hkdebug.py` to access the housekeeping SPI, and set register `0x0b` to value `1` (reset).  Set it back to value `0` to start running again.

Note that the "reset" option in caravel_hkdebug toggles the reset register, but does not leave it in the reset state.

You also should be able to measure just `vddd1`  and not the other 1.8V rails and that should just be your design I thinl.

ah, yes. I forgot it was another power rail

We might have joined them all together on tt demo boards thou