Re: USB Multiple Device Problem

It *might* be that the OHCI2 run out of reserved memory. You can set
the physical page size to a bigger value than the default (64kb?) by
changing a registry setting. Find the registry entry in platform.reg
for ohci and add:
"PhysicalPageSize"=dword:80000

Henrik Viklund
http://www.addlogic.se


Keaven Pineau wrote:
On my setup I am using a usb hub which I connect a keyboard, webcam and a
printer. The keyboard and printer are using the built-in CE drivers but the
webcam is using webcam.dll open source code done by Doug Boling. One thing
to know is that my printer has as also a mass storage device in it.

The problem I have is that when I am connecting the printer in last it won't
work properly. The call to USBDeviceAttach in LoadRegisteredDriver() (in
usbd.c) failed for the mass storage device and then pop the dialog box to
enter the dll name for the driver.

Now, if I disconnect the camera and connect the printer with only the
keyboard. The printer do the same registring process but this time it
doesn't failed on LoadRegisteredDriver(). Moreover, If I connect the camera
after, absolutely no usb device is recognized and the HCD driver isn't
called for an attach.

Is there a maximum number of devices I could connect to a hub?

Anyone has any ideas that could do this behavior?

I am developping for a pxa270 with plateform builder 5.0. I have all the
QFEs up to august 2006.
The webcam used is a logitech quickcam PRO5000 , the same used to develop
the driver.

Thanks,
Keaven

.

Relevant Pages

  • Re: USB Multiple Device Problem
    ... thing to know is that my printer has as also a mass storage device in it. ... then pop the dialog box to enter the dll name for the driver. ... if I disconnect the camera and connect the printer with only the ... doesn't failed on LoadRegisteredDriver(). ...
    (microsoft.public.windowsce.platbuilder)
  • Re: USB Multiple Device Problem
    ... Find the registry entry in platform.reg ... to know is that my printer has as also a mass storage device in it. ... enter the dll name for the driver. ... if I disconnect the camera and connect the printer with only the ...
    (microsoft.public.windowsce.platbuilder)
  • Re: USB Multiple Device Problem
    ... Are you using a bus-powered hub or a self-powered hub? ... The camera drains a lot of power, so it may not have enough power to drive anything else but the camera alone. ... The call to USBDeviceAttach in LoadRegisteredDriver() failed for the mass storage device and then pop the dialog box to enter the dll name for the driver. ...
    (microsoft.public.windowsce.platbuilder)
  • Re: Logitech ClickSmart 510 wont mount
    ... On Sun, 2005-02-13 at 10:54 -0500, Gene Heskett wrote: ... I need to know how to mount this camera as a mass storage device. ... already have it working as a webcam via the spca5xx driver. ...
    (Fedora)
  • IRC Packets being generated. Dont know where from...
    ... *Registry value not found* ... Autorun entries from Registry: ... Enumerating ICQ Agent Autostart apps: ... RAS Asynchronous Media Driver: System32\DRIVERS\asyncmac.sys (manual ...
    (microsoft.public.security.virus)