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Com Port

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Join Date: Oct 2008
Posts: 1
#1: Oct 25 '08
When I try to use any of my com ports I get a message that the port is in use by another program or device. How can I tell what is locking up my serial ports?
Windows XP pro.

Thanks, dick
joedeene's Avatar
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Join Date: Jul 2008
Location: US of A
Posts: 587
#2: Oct 26 '08

re: Com Port

How are you trying to use the port, are you using a programming language and getting that error? Or, are you plugging a device in and getting that error?

joedeene
NeoPa's Avatar
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Join Date: Oct 2006
Location: London - UK
Posts: 15,711
#3: Oct 27 '08

re: Com Port

If you're trying to program the port directly (sending values to its port addresses) then it won't work as it's already under the control of the OS.
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