In the menuconfig system I looked for a way to get an NSH prompt on UART2,but
didn't find it. Is there a way to do that? If so, how?
The standard NSH output goes to /dev/console. For serial devices that
is controlled by the setting:
CONFIG_SERIAL_UARTn_CONSOLE=y
this is in the drivers/serial configuration menu. In that schematic, I
see that the connection to the CDC/ACM VCOM is vis DBGU_UXTD1_PD3 and
DBGU_URXD1_PD2. So 'n' must be one in the above.
I also notice that the default BAUD is 57600 which is unusual. That
means you will also need:
CONFIG_SERIAL_UART_BAUD=57600
Or can I put an NSH prompt on a USB interface?
Yes, but that is a lot more complex.
Greg