3.8.3.22 -sercfg: specify serial port configuration

This option specifies the configuration parameters for the serial port (baud rate, stop bits etc). Its argument is interpreted as a comma-separated list of configuration options, which can be as follows:

• Any single digit from 5 to 9 sets the number of data bits.
• ‘1’, ‘1.5’ or ‘2’ sets the number of stop bits.
• Any other numeric string is interpreted as a baud rate.
• A single lower-case letter specifies the parity: ‘n’ for none, ‘o’ for odd, ‘e’ for even, ‘m’ for mark and ‘s’ for space.
• A single upper-case letter specifies the flow control: ‘N’ for none, ‘X’ for XON/XOFF, ‘R’ for RTS/CTS and ‘D’ for DSR/DTR.

For example, ‘-sercfg 19200,8,n,1,N’ denotes a baud rate of 19200, 8 data bits, no parity, 1 stop bit and no flow control.