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HID device doesn't enumerate on power on

Posted on August 19, 2015 at 04:47

I have a design on STM32F427, which includes a HID device (FS).

As an example I use demo firmware for STM32F4 discovery board.

I ported it to STM32_USB-Host-Device_Lib_V2.1.0 and stripped it from all extra staff, leaving only HID Mouse part.

Now, device enumerates fine after loading firmware to the flash, but doesn't enumerate if I cycle power. I can't figure out what could be a reason for this.

Please advice.

Gennady
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