On Mon, Mar 13, 2023 at 8:18 AM Huang Qi wrote: > I see some implementation of cu (like BSD) will disable the echo and CR/LF > convertion and let remote machine to handle them. > > I prefer to follow the BSD way, is there any side effect for you? Or do you > have any suggetions?
I prefer this approach too, thanks Qi :-) Driver should be as simple as possible, provide raw data, and perform no "silent" transformation of data. The rest is up to the application and/or explicit driver configuration :-) On FreeBSD there is a `stty` utility [1] to display and change terminal driver setup (i.e. parity, bits, speed, rtscts and rtsdtr flow, etc), so you can setup your local terminal to a client needs (i.e. setup usb-uart port to use / do not use rtscts flow used by some esp32 boards to select bootloader mode), and/or setup the terminal to a known state that client needs to adhere (most terminal clients can do this easily). Also I see stty man page relates to termios man page [2]. Cu [3] is the most common utility for serial console, but I also use Minicom with curses interface and lots of useful functions on a client machine :-) [1] https://man.freebsd.org/cgi/man.cgi?query=stty&sektion=1&format=html [2] https://man.freebsd.org/cgi/man.cgi?query=termios&sektion=4&apropos=0&manpath=FreeBSD+13.1-RELEASE [3] https://man.freebsd.org/cgi/man.cgi?query=cu&apropos=0&sektion=0&manpath=FreeBSD+13.1-RELEASE&arch=default&format=html Best regads :-) Tomek -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
