Re: WriteFile problems (help me!)

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#16481

From: Ed Mulroy [TeamB]
Date: Wed, 14 May 2003 15:30

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Check the device at the other end of the serial cable.  It has probably
dropped a signal, possible one of CTS, DCD or DTR.

If you changed to an asynchronous write then it would return after the call
and you would have an opportunity to insert code to help determine the
source of the problem.

.  Ed

> MWP wrote in message
> news:3ec25f43$1@newsgroups.borland.com...
>
> Im am doing the following simple line that is running about 40
> times a second: WriteFile(ComHandle, Block, Length,
> &BytesWritten, NULL);
>
> ComHandle is pointing to a COM port opened at 19200.
> Length is never more than 20 (verified).
>
> It will work for a random amount of time then, WriteFile gets
> called but doesnt return... ever.
>
> Anyone know what the problem could be?

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Subject: Re: WriteFile problems (help me!)
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