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Type: Posts; User: PeterBritton

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  1. Replies
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    Re: Windows boot and driver loading..

    Hello,

    Congratulations on getting it to work!

    Peter
  2. Replies
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    1,477

    Re: problem with my audio device driver.

    Hello,

    Wow! It sounds like a neat program and setup you've got there!

    In the other posting, towards the end it mentions "ridiculously low ByteCount such as 16" but the system needs at least...
  3. Replies
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    Re: Windows boot and driver loading..

    Hello,

    Thats great that its setting up symbolic links - but it doesnt answer why it isnt being seen in the list of available smartcard devices

    Make sure that the smart card service is started...
  4. Replies
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    Re: IOCTL codes

    Hello,

    Is there any documentation for this chip ? or maybe there are clues as to what the IOCTLs are within the manufacturer's example code or headers - if not, they might have an email address...
  5. Replies
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    Re: Problem with CreateFile()

    Hello,

    There is a section of the msdn documentation that talks about using CreateFile and direct access to physical disks, which is very relevant.

    Find the section - "Physical Disks and...
  6. Replies
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    Re: Windows boot and driver loading..

    Hello again,

    Does the driver get to see any incoming operational commands - such as IRP requests?

    Peter
  7. Replies
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    5,260

    Re: Windows boot and driver loading..

    Hello,

    sorry it doesnt appear to be working yet - writing drivers is an interesting challenge at times!
    Sometimes you need to go through step by step making sure that everything is how it should...
  8. Replies
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    5,260

    Re: Windows boot and driver loading..

    Hello,

    There is a useful looking smartcard wdk example that can be found at the following location of the wdk tree:

    src\smartcrd\pscr

    "pscrnt.c" contains example code for a lot of the IRP...
  9. Replies
    28
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    5,260

    Re: Windows boot and driver loading..

    Hello,

    What are the debug messages that it prints?

    Peter
  10. Replies
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    5,260

    Re: Windows boot and driver loading..

    Hello Coslma,

    The first thing to check is that the SmartCard Service has been started - this is required to make sure that the reader device appears in the list of available smartcards - its not...
  11. Replies
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    1,495

    Re: USB Audio Device: Mac or PC first??

    Hello

    Yes thats correct - kmdf is needed for isochronous transfer

    A WDK sample that might be suitable is

    "\src\kmdf\usbsamp\sys"

    Peter
  12. Replies
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    1,495

    Re: USB Audio Device: Mac or PC first??

    Hello,

    It depends on what the driver needs to do as to whether it requires a kernel or user mode driver - UMDF is designed for USB devices and is much easier to use and debug than the kernel-mode...
  13. Re: How to get USB Device Path From VID and PID

    Hello

    The SetupDI**** API calls can be used to acquire information about devices. The devicepath can be found using " SetupDiGetDeviceInterfaceDetail "
    ...
  14. Replies
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    Re: Looking to program for USB 2.0

    Hello,

    If it's a Windows usb driver, then the WDK is a goodplace to begin - its also a very good idea to read as much as possible (books, internet) about the coding and design of drivers.
    ...
  15. Re: Registering coinstallers failed. Error 5: Access is denied.. Why..???

    Hello,

    A URL link to the webpage that gave details of the registry permissions, might be useful.

    Peter
  16. Replies
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    3,355

    Re: Problem with CreateFile()

    Hello,

    Is this working yet?
    If not, it needs to be checked as to whether it is possible for a user mode program to open a file using the device identifier via CreateFile.

    Peter
  17. Replies
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    3,355

    Re: Problem with CreateFile()

    Hello

    The solution to this is connected with L"F:\\test.txt" - why have two \\?

    The reason is that in C and C++ and a lot of other languages the "\" symbol within a string has a specially...
  18. Replies
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    Re: fltuser.h will not compile

    Hello

    Is the very latest version of the WDK being used?

    Peter
  19. Replies
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    Re: Problem with CreateFile()

    Hello

    The Filename to CreateFile needs to be in wide character format - just casting it using (LPCTSTR) isnt going to work as the underlying data will stay the same.

    it needs to be:



    ...
  20. Replies
    9
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    Re: Problem with CreateFile()

    Hello

    Try using "D:\\text_file.txt" as the filename parameter for CreateFile - assuming that D: is a valid writable drive or usb storage device on your system

    Using a debugger (such as the one...
  21. Replies
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    Re: sc start/stop servicename issue

    Hello,

    Great ! so is it all working now?

    Peter
  22. Replies
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    Re: sc start/stop servicename issue

    Hello,

    Does the driverentry get called in the 2nd attempt? - using a debugging print at the very start of DriverEntry should show whether this happens.

    Peter
  23. Re: How to find out the printer has finished?

    Hello,

    There's also a "GetJob" API call:

    http://msdn.microsoft.com/en-us/library/dd144894(VS.85).aspx

    To use it though, you need to have a JobId number that is for your document being...
  24. Re: How to find out the printer has finished?

    Hello,

    If .net technologies are being used then a "PrintSystemJobInfo" object contains an "IsCompleted" member that returns a boolean value.

    There is also an "EndPrint" event - part of the...
  25. Re: Registering coinstallers failed. Error 5: Access is denied.. Why..???

    Hello,

    If the driver installs okay on most machines and not on a few, it would seem to indicate that there is some sort of permissions related issue that is different on those few machines.

    A...
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