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Troubleshooting required with STM32f4 USB Microphone device

Question asked by mukati.umair.001 on Nov 15, 2013
Latest reply on Apr 1, 2014 by m.denis
Dear all,
I think I am almost done with the this program, but when I plug after pprogramming my STM32F4 Discovery board. It gives an exclamation mark, (Code 10) generally. "The I/O request was canceled." is written as well in the device status. I am attaching the programming made on KEIL uVision please help me out with this program.
Umair Mukati.