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[ts-7000] Re: RS232 Questions/Problems

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Subject: [ts-7000] Re: RS232 Questions/Problems
From: "charliem_1216" <>
Date: Fri, 04 Jan 2008 19:19:54 -0000
--- In  "JD" <> wrote:
>
> 
> An interesting thing I just saw on the linux box is that if (in a
> simple case) have hyperterm connected and press keys, it works ok
> until I disconnect and reconnect hyperterm (without restarting the
> test app)
> 
> On the hyperterm restart, nothing I type into hyperterm registers as
> being seen on the linux end.
> 
> Is it a frame error or some other signal occuring that is stopping
> everything?
> And if so, how do you detect and clear (or just plain old ignore)
> errors coming in.
>  
> Windoze has a ClearCommError which gets and clears any errors - is
> there a similar function I should use for linux?
>  

Did you try the CLOCAL change I wrote in my first reply?

I've seen two different things documented as to what happens when both
VTIME and VMIN are zero.  Maybe there is a difference between ARM and
i386 serial port handling of this case.  You could try VMIN = 1, perhaps.

There are some quite detailed howtos on linux serial port programming.
 You may find asnychronous I/O better suited for what you want than
non-canonical.

Regards, ........Charlie



 
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