Hello Gumstix Users,

I'm working with an Overo FireStorm, Turtlecore and Linaro 12.11.

I'm trying to configure two USB webcams on the TurtleCore USB HUB.



rdixey@Undroma:~$ lsusb
Bus 001 Device 002: ID 0424:2513 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 001 Device 004: ID 1871:0341 Aveo Technology Corp. (Driver is Altair USB2.0 Camera (location: usb-ehci-omap.0-2.1.2))

Bus 001 Device 005: ID 2123:1010 
Bus 001 Device 006: ID 0ac8:3450 Z-Star Microelectronics Corp. (driver is USB2.0 Camera (location: usb-ehci-omap.0-2.2))

Using GUVCView, I can display video from each webcam one at a time.

Problem is that GUVCView will not display a second occurrance while the first is already running. Ex:

First webcam is /dev/video7 running via GUVCView and already displaying video.

Running the second webcam produces the error message that there is no space left on the device:

Looks Like Both Webcams want to allocate 480us of bandwidht out of 800us total available bandwidth on the HUB.