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TEK00002.PNG

Anyone else seeing 400ns long decay times for signals going from high to low?

<@U0172QZ342D> Is this at caravel SPI Interface or at Caravel Flash I/F?

this is the GPIO trying to create a 200ns square wave

as you can see, when it drives low, it's not really driving. Tim thinks it might be operating in open drain mode, and needs a pull down.

<@U0172QZ342D> Where I can find the Nucleo HAT Rev-B Schematics PDF file

<https://github.com/efabless/caravel_board/tree/main/hardware|https://github.com/efabless/caravel_board/tree/main/hardware>

Is this one <https://raw.githubusercontent.com/efabless/caravel_board/main/hardware/caravel_Nucleo/caravel_Nucleo.pdf>