This is what I use in my hcsd program (9600 baud). I also use read and
write. To get the entire source take a look at the following link:

http://home.comcast.net/~ncherry/common/hcs.tar.gz

The files you are interested in are hcsd_setup.c (the partial source
is below) and hcsd_io.c (there the xread and xwrite are). The code
below has most of it's comments removed (the comments are important
so read them).

   if((device=open(line, O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0) {
     syslog(LOG_ERR, "%s: %m", line);
     exit(errno);
   }


   /*
   ** This works for heyu (NJC)
   */


   i = tcgetattr(device, &oldsb);


   if (i < 0) {
     syslog(LOG_CRIT, strerror(errno));
     exit(errno);
   }


   newsb = oldsb;


   newsb.c_iflag = IGNBRK | IGNPAR;
   newsb.c_oflag = 0;
   newsb.c_lflag = ISIG;
   newsb.c_cflag = (CLOCAL | B9600 | CS8 | CREAD);


   for (i = 0; i < NCC; i++)
     newsb.c_cc[i] = 0;


   newsb.c_cc[VMIN]   = 126;
   newsb.c_cc[VTIME]  = 0;


   newsb.c_cc[VQUIT]  = 0;
   newsb.c_cc[VSTART] = 0;
   newsb.c_cc[VSTOP]  = 0;
   newsb.c_cc[VSUSP]  = 0;


   tcsetattr(device, TCSADRAIN, &newsb);




--
Linux Home Automation         Neil Cherry        ncherry@comcast.net
http://home.comcast.net/~ncherry/               (Text only)
http://linuxha.sourceforge.net/                 (SourceForge)
http://hcs.sourceforge.net/                     (HCS II)

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