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OMAP3530 USB OTG issue (USB composite device).

Subbarao PNV
Prodigy 60 points

Processor: OMAP 3530

BSP version: TI_EVM_3530 - 6.14.00

Platform: EVM.

We have developed UVC client driver with isochronous transfer type and with 3 transactions per micro frame. In USB PDD driver, DMA is enabled and double buffering is enabled. Currently Frame rate achieved is 28 frames per second.

We have integrated our UVC client driver and WINCE default Mass storage client driver with WINCE default composite client driver. In this case enumeration of both the devices is successful on the host PC. If I access Mass storage alone, Mass storage operations are successful and if we run the UVC preview alone it is working fine. but while UVC preview is running on the host PC, if we open “My computer”, USB reset is happening on device side and enumeration of the device. So we are unable to access the Mass storage device and UVC simultaneously.

Can any body help on this?

Thanks,

Subbarao.