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CubeMX USB STM32F1xx

Question asked by francois.meunier on Apr 3, 2015

i'm giving a try to CubeMX. a simple test prog in stm32f4vl_disco (HID interface) works like a charm. the same prog for a STM32F103RBT6 (stm32-mini from china) starts ok, stays alive, but no usb at all.noting visible on the computer.
the board is ok and works well on an old project using STM32_USB-FS-Device_Driver-3.4.0.
i also tried the example provided with nucleo f103 in STM32Cube_FW_F1_V1.0.0 (adapted to the HW of my board). same thing: all is working but USB doesn't even enumerate.
does someone has an idea of what could be missing? what i could have missed?
thx for your attention