Setup and use console driver??

[Andrew Sinclair]

You could use termios. There is plenty of info in the man files in unix / 
linux on how to use it. Below is pretty close to what I use to init termios 
for binary data at 115200bps, 8 data bits, no parity, 1 stop bit, 100msec 
read timeout, on a pc386 platform. (I took the liberty of removing stuff of 
no interest ;) ) From there you use the file read and write functions to 
send data.

#include <stdio.h>
#include <termios.h>

int serial_init()
{
	struct termios options;

	RadioState=RS_RX_IDLE;
	fp = fopen ("/dev/ttyS1", "r+b"); // B9600|CS0 termios default
	fd = fileno(fp);
	tcgetattr(fd, &options);
	/* set raw input, 1 second timeout */
	options.c_cflag |= (CLOCAL | CREAD);  /* Enable the receiver and set local 
mode...*/
	options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);	 /*input is 
unprocessed.*/
	options.c_oflag &= ~OPOST;	/*Postprocess output (not set = raw output)*/
	options.c_cc[VMIN] = 0;
	options.c_cc[VTIME] = 1;  /*delay specified in 10ths of seconds - wait 
forever*/
	/*No parity (8N1):*/
	options.c_cflag &= ~PARENB;
	options.c_cflag &= ~CSTOPB;
	options.c_cflag &= ~CSIZE; /* Mask the character size bits */
	options.c_cflag &= ~CRTSCTS;
	options.c_cflag |= CS8; /* Select 8 data bits */
	options.c_iflag &= ~(IGNBRK | BRKINT | INLCR | ICRNL | IXON | IXOFF | 
IXANY); /*disable flow control, disable CR->LF*/
	/* set the options */
	cfsetispeed(&options, B115200);
	cfsetospeed(&options, B115200);
/*	options.c_cflag |= CNEW_RTSCTS; hardware flow control*/
   /*	fcntl(fd, F_SETFL, 0);*/
	tcsetattr(fd, TCSANOW, &options);
	if (!fd)
	{
		printf ("Unable to open /dev/ttyS1");
		return(FALSE);
		
	}
	else
		return TRUE;
}


-----Original Message-----
From:	Carl-Johan Hansson [SMTP:cjhansson at hotmail.com]
Sent:	Tuesday, 23 March 2004 2:12 AM
To:	rtems-users at rtems.com
Subject:	Setup and use console driver??

I'm developing application for an ERC32 processor and now I reached the
point where I want to use the serial port for sending and receiving data. 
If
I just open the port and start using it, I end up in some kind of console
application mode. I just want to send and receive binary data in various
speeds, how hard can it be??
Anyone got hints or software that shows how to do it?

/CJ

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