minicom

/# minicom -s
In [configuration] menu, > "Serial port setup"
A - Serial Device : /dev/ttyS0
E - Bps/Par/Bits : 57600 8N1
F - Hardware Flow Control : No
G - Software Flow Control : No

In [configuration] menu, > "Serial setup as dfl"
> "Exit" or "Exit from Minicom"

then press CTRL - "A" then "X" to exit.