USB Driver on Windows 7

[cdswift]

Hi,

My Preenfm2 connects OK via USB and is recognised as a DFU device when started in DFU mode.  When started in normal mode it is recognised as PreenFM mk2 (Interface 0) but is classified as a USB Device rather than as a Sound, Video & Game controller device.  As a result it does not appear as a midi device in any of my midi player applications (although my M-Audio UNO does).  The OS is Windows 7 32 bit.  I have connected the module to a Windows 8 machine & it is recognised fine as a midi interface.

Any ideas how to force my PC to recognise PreenFM2 as an audio/midi device?

[cdswift]

This gets more curious.  I connected the PreeFM2 to another box with Windows 7 and it was correctly identified as aSound, Video & Game controller device.  I have deleted all references to PreeFM in the registry and as soon as I connect it, it is identified as the wrong type of device.

[Xavier]

Hi,

Weird... never heard of this problem.
Can you try to go in the device property (right click + properties + drivers), and to try to chose another driver...
Don't know exactly but you can try to update and select a different one if i remember correctly...

Xavier

[cdswift]

Hi Xavier,
This is clearly not a problem with the preenfm2, but with the notebook that I am using.  For the time being. I will connect using my usb to midi converter which works fine.

I've tried all sorts of tricks to get it to use a different driver, but it keeps reverting to what I think is a mass storage driver.  I have tried copying the driver files from the working machine but it makes no difference.  I suspect if I rebuilt the OS, it would work fine.

Out of interest, is the midi client code yours or standard ST Microelectronics?

Chris

I will keep searching for a solution in the background & let you know if I find one.

[cdswift]

Hi Xavier,

An update for you.  I built an Arduino based usb - midi interface that uses standard Windows Class drivers.  When I connected it to my laptop, it wouldn't load the correct driver either - so its definitely my laptop that is the problem.  Well, I decided to buy a new laptop with Windows 8.1 and both devices work perfectly.  I will just rebuild my other laptop at some point.

[Xavier]

Thanks for the update.