[SOLVED] USB UNSPECIFIED

Generic boards that are not Maple or Maple mini clones, and don't contain the additional USB reset hardware
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LEONARDOMS
Posts: 12
Joined: Mon Jul 10, 2017 2:20 pm

[SOLVED] USB UNSPECIFIED

Post by LEONARDOMS » Mon Jul 10, 2017 3:12 pm

Hello to all. I bought this generic board with the stm32- f103c8 controller. I´ve installed all the drivers (https://github.com/rogerclarkmelbourne/Arduino_STM32), soldered firstly a 1.8K resistor between a12 and 3.3V pins. Then a 1.5 K resistor and nothing. The board simply isn´t recognized. In device manager it appears as Unspecified -Unknown Device. When a plug in the usb cable,the board just keeps blinking the LED on PC13 pin.

Any suggestions?

Thank you.

fredbox
Posts: 95
Joined: Tue Jul 07, 2015 4:44 pm

Re: USB UNSPECIFIED

Post by fredbox » Mon Jul 10, 2017 7:48 pm

Did you install the bootloader? Your board won't be recognized until you program the bootloader into the board.
http://wiki.stm32duino.com/index.php?ti ... bootloader

LEONARDOMS
Posts: 12
Joined: Mon Jul 10, 2017 2:20 pm

Re: USB UNSPECIFIED

Post by LEONARDOMS » Sat Jul 15, 2017 11:23 am

Fredbox, thank you for you reply. This problem was solved. I was making a few mistakes.

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