Get Current Communication-Port

\i I ? C

Returns the current communication-port in use.

Response:

[ACK] port_id [ACK]

port_id	Description
01	serial port 0
02	serial port 1
03	USB port
04	I²C port
05	SPI port
06	ethernet port

Response Example

[ACK][03][ACK]

The current communication-port is the USB port.

Set Baud Rate
Controlling Options