HID Device Example not detected on PC

Dear All

I designed my own HW with STM32F103VBT6 MCU and at first step,testing two blinky/(RTX) examples that was fine (little problems solved in programming).

Recently I tried the USB HID Device programming, Step by step as example in Keil MDK5_getting_Started manual. but unfortunately it was failed,(when connecting to PC nothing happened and no device detected).

As I don't have any USB experience,(but reading documents about USB), I can't recognize the problems. I am sure about my HW which i test it cold frequently.

does anyone knows the point I missed the right way?

best regards.

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  • Dear All

    I am sorry for mistake on my language.

    Anyway, I test with success the blinky samples of NUCLEO-F103RB (Rev.C) board on my HW with some adaptation, but this board does not have any USB samples.

    So I test USB example of manual that I mentioned before and nothing happened, then I try Blinking(RTX) example of that manual and nothing happened again, I think maybe the examples does not match my HW, or so many changes should be apply.

    My HW is Simple,USB pins (PA.11,PA.12) connected to USB ports via R 22ohm , PA.8 tied to D+ via R 1.5Kohm, PC.0~PC.3 and PC.9 connected to LEDs all via R 270ohm (PC.9 for USB LED).

    There is other purpose complicated HW that is not important at this time.

    As I mentioned, I have no experience on USB and need help to begin USB design.
    could anyone let me know how to overcome this steps?

    best Regards

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