From mboxrd@z Thu Jan  1 00:00:00 1970
From: Glynn Clements <glynn@gclements.plus.com>
Subject: RE: Serial Port (RS-232)
Date: Wed, 28 Jan 2009 17:19:29 +0000
Message-ID: <18816.37793.803089.202815@cerise.gclements.plus.com>
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To: Jaime Garcia <jgarcia@vali.com.mx>
Cc: linux-c-programming@vger.kernel.org


Jaime Garcia wrote:

> What I want to do is to read from another device that transmit a string of
> chars through serial connector, what do you recommend? I would like to know
> your approach for this. Thank you in advance for your help.

First, open() the device.

Then configure the line settings with e.g.:

	struct termios t;
	tcgetattr(fd, &t);
	t.c_lflag &= ~ICANON;
	tcsetattr(fd, TCSANOW, &t);

The ICANON flag controls the use of "canonical mode" (line buffering,
processing of control codes, etc). For a device other than a terminal,
you would normally disable this flag. Exactly how the line is
configured depends upon the device; see the termios(3) manpage for a
list of settings.

Finally, just read() data.

-- 
Glynn Clements <glynn@gclements.plus.com>