With RX command you can receive one or more bytes in HEX notation from external UART of Carberry.
UART RX [<LEN>]
RX accepts an optional parameter indicating the maximum number of data bytes to read from UART.
RX command returns one (or more) bytes in HEX notation read from UART, followed by a line containing OK.
If there are no bytes waiting for reading, the command returns only OK line.
Receiving some data bytes:
UART RX 00112233445566778899AABBCCDDEEFF OK UART RX OK
Receiving a maximum of eight characters at a time:
UART RX 8 0011223344556677 OK UART RX 8 8899AABBCCDDEEFF OK UART RX 8 OK