With RECV command you can receive one or more ASCII characters from external UART of Carberry.
UART RECV [<LEN>]
RECV accepts an optional parameter indicating the maximum number of characters to read from UART.
RECV command returns one (or more) line(s) containing the characters read from UART, followed by a line containing OK.
If there are no characters waiting for reading, the command returns only OK line.
Receiving some characters:
UART RECV Hello World! OK
UART RECV
OK
Receiving a maximum of eight characters at a time:
UART RECV 8 Hello Wo OK UART RECV 8 rld! OK
UART RECV 8 OK