[NTLUG:Discuss] Help with serial I/O.

[Bug Hunter]

  go get the source for minicom from ftp.redhat.com, or some other site.
briefly:

	SerialFD = open(  "/dev/cua2", O_RDWR);

	then fprintf(SerialFD,""...);

	Look for Richard W. Stevens, he has several books on Unix
Programming.


bug

On Sun, 3 Oct 1999, Kipton Moravec wrote:

> Programming in Linux.
> 
> I have been programming a long time, but have programmed for DOS,
> Vax/Vms, Windows 3.1, but never UNIX.
> 
> I have a very simple question.  How do I open a serial port, and read
> and write binary information to it? 
> 
> What is the C command to open say COM3:  
> 
> Then does printf work?
> 
> The program is very simple to talk to an external device, and dump the
> formatted results to a file, but I am not sure where to start.
> 
> Is there a good general book on programming Linux in C that would
> explain this?
> 
> Also I want to poll this device every 120 Seconds.  Is there a sleep
> command that lets my program become inactive for a while?  Or is it
> better to have it rescheduled to execute two minutes later?
> 
> Kip
> 
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