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OMAP-L138: USB times out in Windows

David Masdon
Prodigy 20 points

Background

  • Our code is based on OMAP StarterWare 1.10.04.01 example usb_serial_dev.c

  • The embedded software driver will behave like a USB to UART convertor

  • For Win10 side, the Stellaris driver is used (we found the Win10 usbser driver behaves the same way)

  • There were no problems with Windows 7 (only Stellaris was used)

 

Problem 1

  • When system boots from flash, win10 recognizes the device as a serial device.

  • We can connect to the embedded device and small messages go through with success

  • Large data buffers (sent 64 bytes at a time) overrun something in the driver and the function times out

 

Problem 2

  • When in debug mode on the embedded device (OMAP), windows 10 does not recognize the device.

 

Help Needed

  • Is there a stellaris driver update that we are missing?

  • Is there a change in the embedded that ought to be implemented?