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Cannot get my board to start USB bootloader

Question asked by belomutskiy.andrey on May 27, 2014
We've designed a simple test board for stm32f407 but I am failing to figure out how to activate USB bootloader.

I have boot0 pulled high and I have boot1/PB2 pulled down as Pattern1 in AN2606 tells me to do. The diagram http://i.imgur.com/RyCuRoV.png also has a 'USB cable detected check' - this one I am not sure how it is implemented, but I have VBUS/PA9 pulled to 5v. I know that USB does work - my firmware uses USB and it works just fine.

What am I missing?

Here is the board: http://rusefi.com/images/forum_posts/brain_board.jpg
Schematics: https://svn.code.sf.net/p/rusefi/code/trunk/hardware/brain_board/Schematic.pdf

From my experience with discovery board I am expecting Windows to see the board as 'ST DFU mode something' device.

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