CDC driver problem with Vista

rblode · Joined: 05 Mar 2010 Posts: 2

Hello ,

I have problem using the CDC class with CDC code sample and the pic18f2550 on Vista. This all works great on XP...and after taking two weeks to get it working reliably on XP, now it fails on Vista. I tried the CCS supplied inf file for the CDC class, and I tried the Microchip supplied (digitally signed) inf file but I have always get this error:
"This device cannot start. (Code 10)"

Thank you.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This is in the forum archives. You can find it with the forum's search engine:
http://www.ccsinfo.com/forum/viewtopic.php?t=38092

Guest · Posted: Sat Mar 06, 2010 3:07 am

Thank you but there is no solution in this topic

Ttelmah · Guest

There are a lot of different possible 'reasons'.

On the thread, have you taken the advice at the end, and got the newer CDC driver?.
Then, have you tried the actual _unit_ onto an XP machine?. Not just the a 'duplicate', but the actual unit involved. It is surprisingly common to have a unit with problems without realising it....
Next, has the actual hardware of the Vista machine been tried with XP?. There are known problems/oddities with some chipsets. Try installing the motherboard manufacturers drivers, rather than the ones that come with Vista. Unfortunately, MS has some major driver faults (particularly cmmon with Intel chipsets....).
Have you tied both with and without a hub?.
Have you tried different cables?.
If this is a desktop/tower PC, try the USB sockets closest to the keyboard connector.

A lot then depends on how technical you are. I'd install a USB sniffer, and record the packets involved when the device is attached.

The CDC driver, does work.

Best Wishes

rblode · Joined: 05 Mar 2010 Posts: 2

Thank you for the reply.
I tried to test every possibility that you asked me to do, but its still not working.

Here the .inf file that I use: