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Tiva EK-TM4C1294XL USB + Ethernet -- how to?

Other Parts Discussed in Thread: EK-TM4C1294XL

Hello all,

I'm having a EK-TM4C1294XL launchpad. i'm trying to host a simple webserver which will read webpages from USB drive and send it over ethernet using lwip stack.

For that i took the code of enet_io example which ships with the Tivaware for EK-TM4C1294XL and tried inserting the USB drive access codes from usb_host_msc example.
 I moved entire http server related code from main file to a different module and now http server works fine. It serves the pages from its internal flash memory.

I then tried adding the USB MSC code to the main file first. But now I'm stuck. although http server is working, USB pendrive is not being detected. When I tried debugging, I found that MSCCallback function is never being hit. I tried inserting and removing my USB drive.

Anybody have any idea why this is happening? Please help!

Thanks ahead,

vish