Re: Serial Port Application

Tech-Archive recommends: Fix windows errors by optimizing your registry

From: John Flynn (anonymous_at_discussions.microsoft.com)
Date: 05/28/04 

Date: Fri, 28 May 2004 02:56:03 -0700

Paul,

How can I view the Drivers/Active list as I am using a locally booted image. Can the registry be viewed from a Windows CE image?

Thanks,
J
     
     ----- Paul G. Tobey [eMVP] wrote: -----
     
     Nor will you. Drivers/Active is the list, generated at run-time, of the
     (surprise), drivers which are actually active.
     
     So, no, it would not be enough to compare static reg files...
     
     Paul T.
     
     "John Flynn" <anonymous@discussions.microsoft.com> wrote in message
     news:B8473390-C105-491B-BE7B-9A2647F7A91A@microsoft.com...
> I do not see any mention of Drivers/Active in either platform.reg,
     project.reg or common.reg.
>> Although the serial com port I use is defined under.
>> [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial]
>> Would it be enough to compare each reg file (i.e. platform.reg,
     project.reg or common.reg) and find the differences.
>> Thanks,
> J
>> ----- Paul G. Tobey [eMVP] wrote: -----
>> I'd look at the registry of a running device of each type and look at
> HKLM/Drivers/Active. At a guess, you might be seeing an ordering
     problem
> with the port names. That is, on his system, maybe the USB part of
     the
> registry is first, causing COM1 to be the USB port and COM2 (or
     whatever),
> to be the serial port. If the reverse is true on your device, you
     might not
> pick up on the fact that they are swapped (or numbered differently in
     some
> other way, maybe because of a driver included in one build and not
     the
> other). The Active keys should be identical, if the builds are
     intended to
> be the same.
>> Paul T.
>> "John Flynn" <anonymous@discussions.microsoft.com> wrote in message
> news:530766B7-958C-4849-B7B8-DAF47D5A588C@microsoft.com...
>> Paul,
>>> Thanks for your reply - sorry for the delay in getting back to
     you.
>>> I have not modified the registry at all and I always us a debug
     build.
>>> A colleage has completely rebuilt both nk.bin and application
     using his
> configuration and this fails with an "Error 55".
>>> I have re-built my configuration and all works well. I do note on
     my built
> that the USB devices fail to work but serial devices work fine.
     Whereas my
> colleage has USB work but not serial. I don't know if this is a
     coinsidence
> or not.
>>> I am at a loss how to go about debugging this one, can anyone
     suggest a
> strategy?
>>> Thanks,
>> J
>>> ----- Paul G. Tobey [eMVP] wrote: -----
>>> Maybe the names of the available serial ports are different.
     A
> simple
>> registry difference is all that would be required to cause
     this. If
> one
>> image is a debug image, the port might be in use as the serial
     debug
> port,
>> making the port unavailable to the API...
>>> Paul T.
>>> "John Flynn" <anonymous@discussions.microsoft.com> wrote in
     message
>> news:964B8420-2FD1-48C8-BB5C-E9A8A73185DA@microsoft.com...
>>> I have a serial port test program that I am having trouble with.
>>>> I have a Windows CE image that boots fine. This is an image that
     I
>>> created some time ago. I have created a new serial test program
> from
>>> within Platform Builder and then copied this executable onto the
> hard
>>> disk where the WinCE image is. When I try to run this serial test
>>> program I get an "Error 55" when I try to open the serial port.
>>>> I then copied the new nk.bin image to the hard disk (the one that
> was
>>> build at the same time as the serial test program) and this
>>> combination worked fine.
>>>> So I know the the serial test program works fine but not witht
     the
> old
>>> WinCE inmage.
>>>> Does anyone know what his problem might be. There seems to be
     some
>>> dependency but I don't know what it is.
>>>> Any help would be appreciated.
>>>> Thanks
>>> J
>>>

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