[ILUG] Urgent help needed

[Ronan Cunniffe]

Shane wrote:

> Hi, If anyone can provide me with g++ code to configure a serial 
> port...buad, bits etc..no handshaking required, and how I can switch 
> echo on and off.  Simple code please..no buffers, or streams need to 
> be handled    purely capture and autoecho a single byte.

I just happen to be doing this kind of stuff....

#include <termios.h>

/*********************************************************
 * config_9600_8N1
 *
 */

int config_serial(unsigned fd)
{
        struct termios ns;

        tcgetattr(fd,&ns);
        cfsetispeed(&ns,B9600);
        cfsetospeed(&ns,B9600);
        cfmakeraw(&ns);       //implies 8N1
        ns.c_lflag&=ECHO;   //autoreply to incoming characters

        return tcsetattr(fd,TCSANOW,&ns);
}

The ECHO assumes you want to reply with the same byte that came in.  
Otherwise, remove that and do it manually with 
read/write/select/poll/whatever.

> Cash reward for quick response

Bah.  Buy someone an unexpected beer.

Ronan