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Date: Sun, 18 Feb 1996 21:24:42 -0300 (EST)
From: "Lenzi, Sergio" <lenzi@cwbone.bsi.com.br>
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To: "Brian J. McGovern" <mcgovern@spoon.beta.com>
cc: questions@freebsd.org
Subject: Re: tc* questions...
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On Sun, 18 Feb 1996, Brian J. McGovern wrote:

> 
> I have been playing with tcgetattr and tcsetattr with some reasonable
> success. However, I'm now curious how to do it the "right" way.
> 
> What flags should I set to put a terminal in such a mode so that 
> characters aren't echo'ed, and characters typed are returned
> immediately? I've played with ECHO, CLOCAL, and ICANON to some success. 

use the c_lflags &= (~ECHO | ~ICANON)
        c_cc[VMIN]=1;
	c_cc[V_TIME]=1;
after...
	tcsetattr(file_handler,TCSANOW,&termios)

I prefer:

	if (fork() == 0) {
		execlp("stty","stty","-echo",
			"-icanon",
			"time","1",
			"min","1",
			"clocal",NULL);
	}
	wait(NULL);
	...
	...



> 
> What flags should I set for a modem for a "normal dialout"? 
> ie - port doesn't echo (the device will echo the characters)
>    - characters should be read() immediately (again, no waiting for CR)
> 
-echo, -icanon,min 1, time 1.

> Any changes for inbound calls?

I use the ttydx device with a direct rs232 cable and a modem initialized 
with:
at&c1&d2s0=1&w 


> 
> Lastly, is there any way to directly look at some of the line signals (CD,DTR,
> etc)? 
> 
there is an ioctl in the termios.h....