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Question about implement USB MSC on STM32F207

Question asked by on Sep 25, 2014
Latest reply on Oct 1, 2014 by
Hi all:
     It's my first time working with MCU and got problem to implement USB MSC. I'm using the STM32F207 core and test with USB-Host-Device_Lib_V2.0.0, msc sample code.

     After download the driver to my board, plug the USB cable. I got the "usb device not recognized" message from windows OS. I trace back the code, the usb interrupt is work and do reset and enumerate. But I don't capture the descriptor send from my board. I guess that's why the OS can't recognized my msc device.

      I'm confused that should I write my own code for descriptor and send it out, or there is something I miss to set with the sample code. Please give me a hint.