PIC 18F4550 USB on Windows 2008 Server

Prefekt · Joined: 21 Oct 2010 Posts: 85

Hello,

I have tried to connect a PIC 18F4550 with USB to an Windows 2008 server. The system can't find the PIC!
On my Windows7 Pc, it's working fine. Any Ideas? There a special drivers?
I thougt Win7 and 2008 Server has the same kernel, driver and so on!

thanks
Volker

Ttelmah · Joined: 11 Mar 2010 Posts: 19552

Has run OK on W2008 server for me.

Possible things:
Some USB3 implementations give reverse compatibility problems. What chipset?.
Does anything happen?. Even without a driver, the device should be listed in device manager, with a ?.
Security is the most likely problem. On servers it is common to lockdown the machine so a 'user' can't install any hardware. Anything third party attached is a potential security breach. You can set the group policy settings to prevent drivers from being installed.

I'd suspect the last is the most likely. I set up server installs like this out of the box, so _only_ the administrator can add hardware.

Best Wishes

Prefekt · Joined: 21 Oct 2010 Posts: 85

Thanks for the answer.

The device is listed in the device manger as unknown Device '?'.
Do you have a link to the correct driver?

thanks Volker

Ttelmah · Joined: 11 Mar 2010 Posts: 19552

Comes with the compiler.

'Drivers' directory of the complier, 'NT,2000,XP,VISTA,7' subdirectory.

cdc_NTXPvista.inf

In device manager, select the device, say 'update driver', and point it at this file.

Best Wishes

Prefekt · Joined: 21 Oct 2010 Posts: 85

Hello,
it seems to be a general problem...

I have the PIC in a PC desktop the USB is connected and the power is connected to a power supply output.

Sometimes the PIC will not be identified from windows after a boot.
The problem seem, that the power is coming up, before the USB on board is ready.
Any Idea what I can do?

Ttelmah · Joined: 11 Mar 2010 Posts: 19552

Shouldn't matter at all.
Provided the device is correctly using the connection sense pin, you can have it powered before or after the PC, and it'll connect fine. I have both devices that are switched on/off while the PC is running, and PC's that are switched on/off while the PIC is running, without problems.
If a device has it's own power, the USB 'spec', _requires_ that connection sense is used. It is (unfortunately) a common error, to not use this.

Best Wishes

Prefekt · Joined: 21 Oct 2010 Posts: 85

Hello,

I have deinstall all USB driver from the pc and the plug the pic on. So I could install the new driver and I works now.

Thanks