Hi,
As an introduction to the RISCV, I would like to use NuttX on my M5stamp
C3U, which I can get for 8 dollars at a local store.
https://docs.m5stack.com/en/core/stamp_c3u
The module does not use a usb serial chip but direct USB connection
(there is a schematic in the bottom of the page).
I wonder how it works: Is serial on USB supported by an internal
bootloader or does this require firmware support that will disappear
after I flash this board for the first time?
I ask this dumb question here because I know there are ESP32 people on
this list.
Thanks for the help,
Sebastien
