Query the Protocol of the COM Port

#Firmware/v310

prot, baud, parity, dbits, sbits = cpo:prot()

Query the current protocol.
Since the COM ports can perform automatic baud rate and protocol detection, this can show either what's been set, or what's been detected.

e.g.

'19200N8;', 19200, 'N', 8, 1.5