Re: USB Multiple Device Problem

I went a bit further in the code and found the problem is in the function
SetUsbInterface() of the file usbmsc.c
the call to lpOpenPipe failed, I put the line of code where it occurs
between "***". From there I don't really know what to do.

Thanks again,

BOOL SetUsbInterface(PUSBMSC_DEVICE pUsbDevice)
{
.....
else if (USB_ENDPOINT_DIRECTION_IN(
pEndpoint->Descriptor.bEndpointAddress ) )
{
RETAILMSG(1, (TEXT("USB Endpoint IN Address:
%d\r\n"),pEndpoint->Descriptor.bEndpointAddress));
if ( NULL == pUsbDevice->BulkIn.hPipe &&
(pEndpoint->Descriptor.bmAttributes &
USB_ENDPOINT_TYPE_MASK) == USB_ENDPOINT_TYPE_BULK)
{
//
// create the Bulk IN pipe
//

***
pUsbDevice->BulkIn.hPipe = pUsbDevice->UsbFuncs->lpOpenPipe(
pUsbDevice->hUsbDevice,
&pEndpoint->Descriptor );
***

if ( !pUsbDevice->BulkIn.hPipe )
{
DEBUGMSG( ZONE_ERR, (TEXT("OpenPipe error: %d\n"), GetLastError() ));
RETAILMSG(1, (TEXT("2- OpenPipe error: %d\n"), GetLastError() ));
bRc = FALSE;
TEST_TRAP();
break;
}
.....
return (bRc);
}

"Keaven Pineau" <keavenpineau@xxxxxxxxxx> wrote in message
news:Ow9uMYB3GHA.4024@xxxxxxxxxxxxxxxxxxxxxxx
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
    ... 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)
  • Re: Need Help: CE5.0 flash is not shown as USB mass storage device
    ... Bruce.Eitman AT EuroTech DOT com ... driver usbmsfn.dll as the default client driver, ... only usb serial function driver is getting loaded. ... I am trying to expose my flash folders as a USB mass storage device. ...
    (microsoft.public.windowsce.platbuilder)
  • Re: USB Multiple Device Problem
    ... Keaven Pineau wrote: ... PBuilder help. ... to know is that my printer has as also a mass storage device in it. ... enter the dll name for the driver. ...
    (microsoft.public.windowsce.platbuilder)
  • Re: Need Help: CE5.0 flash is not shown as USB mass storage device
    ... Bruce.Eitman AT EuroTech DOT com ... driver usbmsfn.dll as the default client driver, ... only usb serial function driver is getting loaded. ... I am trying to expose my flash folders as a USB mass storage device. ...
    (microsoft.public.windowsce.platbuilder)
Loading