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Leif Holmgren
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 Posted: Wed Jan 11, 2006 9:36 pm Post subject: Re: Delay or suspend Application waiting for thread to compl |
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Paul E. Schoen wrote:
| Quote: | I am writing an application (and also a DLL) which uses a serial port with
specialized hardware. I need to try each of the available COM ports, open
it, send one or more control characters,
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Not that it's any help with your problem but I hope that this is a scan
that the user has to initiate manually and that you provide a proper
warning before startint the scan. Other attached things may not like
what they receive.
I have had equipment lock up so bad I had to take it apart and remove
the internal battery just because a idiotic software for something
different scanned the serial ports each time it was started. This was
| Quote: | 10 years ago so I don't remember what it was but that software went
out the window as soon as I realized what had happened.. |
/Leif
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Paul E. Schoen
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| Posted: Thu Jan 12, 2006 2:57 am Post subject: Re: Delay or suspend Application waiting for thread to compl |
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I appreciate the suggestion, and I think I will add a warning when this is
about to occur. Normally, the software will attempt to open a COM port that
has been predetermined in a setup file. It sends a single Ctrl-T which will
initiate a reply of a specific sequence of 240 characters. If it does not
find the proper information in the buffer after a timeout of about 500 mSec,
it closes the port. If it is searching, it will try all available ports.
Otherwise, it will enter a Demo mode. You may download the software (updated
often) and more information on my website www.Ortmaster.com. I would
appreciate suggestions and comments from Delphi professionals. This will be
used on a rather specialized piece of hardware, and I would not expect much
else to be connected to serial ports, but it is an important consideration.
Now that I have figured out a way to implement the Delay(mSec) function I
will also write a DelayMsg(mSec) function, and possibly offer it to the
Delphi community on Torry's pages or elsewhere (after more testing and
discussion). I wish I had such a function when I was starting this project.
Thanks.
Paul
"Leif Holmgren" <nobody (AT) nowhere (DOT) com> wrote
| Quote: | Paul E. Schoen wrote:
I am writing an application (and also a DLL) which uses a serial port
with
specialized hardware. I need to try each of the available COM ports,
open
it, send one or more control characters,
Not that it's any help with your problem but I hope that this is a scan
that the user has to initiate manually and that you provide a proper
warning before startint the scan. Other attached things may not like
what they receive.
I have had equipment lock up so bad I had to take it apart and remove
the internal battery just because a idiotic software for something
different scanned the serial ports each time it was started. This was
10 years ago so I don't remember what it was but that software went
out the window as soon as I realized what had happened..
/Leif
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