Driver problem

[Mathan]

Dear all,

             Am using Labview 8.5.

In my application am using some USB device connected to the system. I have created a driver for my device using NI VISA Driver Development Wizard and the driver gets enumerated in the device manager normally without any problems. I have to test my USB Device. I am using some utility to test that named USBCV.

The problem am facing is when i launched that USBCV utility that utility driver will get enumerated in the device manager and the driver that i created for my device was not displayed in the device manager. how can i proceed further.

Provide your valuable suggestions as early as possible.

Regards,

Mathan

[Can_W]

Hey Mathan,
I would say that this is expected behaviour. For any device you have, you can only have one driver associated with it, this is because the hardware needs to know what software to use. Since the USBCV uses one set of drivers, and National Instruments software uses another set, there will be a conflict in Device Manager.
From my opinion the best way to get around this would to be implement some LV code to test your device, since that is all that the USBCV seems to be doing for you. I'm not familiar with these devices or the utility, but the manual should give you more details on what operations it's performing and from that you can mimic it in LV, CVI or some other programming language, your choice

Hope this helps
Can W

[Mathan]

Hey can,

[Mathan]

Hey can,

              Thanks for the

[Mathan]

Hey can,

              Thanks for the support

[Mathan]

Hey can,

              Thanks for the support. But actually i have developed the same using parallel port and used some FET's for mouse action generation (Coding done in VB - used inpout32.dll) for running the USBCV test. Now i thought of removing all the hardware things (FET, parallel port connections and even VB application) and thought of testing in Labview itself. Based on ur comments it seems i can't follow up with my idea. Anyway, thanks a lot for ur post.

Regards,

Mathan P

[Can_W]

Hey Mathan,
Sorry, but I'm a bit confused. From what your last post stated, you wanted to do your testing in LV, and this is what I recommended as your work around in regards to the driver issue. I just simply meant that you will not be able to have 2 drivers present for the one device. If you can communicate with your device via parallel port, than you won't need the VISA driver developlment wizard. You can then use both the USBCV and LV, just communicate using the parallel port.

Hope it helps
Can W

[Mathan]

Hey Can,

               That's ok. No problem. What i tried to implement was already done(With help of VB + hardware) and i tried to do it in my ownway(Only USB control). That's all.

Thanks for ur continuous support.

Regards,

Mathan P