Can I ask what caravel_daughter board and caravel_breakout we will get? what the model of them. I can’t find the right information about daughter board, because what i got from github, is not same as the image in channel

The white+blue board underneath is I believe for most people the Nucleo F746ZG https://www.st.com/resource/en/user_manual/um1974-stm32-nucleo144-boards-mb1137-stmicroelectronics.pdf, the black board on middle is a custom design from efabless, referred as the "Caravel Nucleo Hat" in the getting started guide https://github.com/efabless/caravel_board/tree/main/firmware_vex/nucleo#readme, you can find documentation and design files here https://github.com/efabless/caravel_board/tree/main/hardware/caravel_Nucleo, the smaller yellow breakout on top (which should be white for most people) is referred as the "Caravel breakout" and simply break out all the I/O from the caravel chip.

@proppy thanks for you reply, I am trying to design the test method of this whole thing. and i want to ask, should I test these 3 boards as a whole item, or i should test them each? also, I only know I should test the GPIO and flash, what else should I to test?