USB Device Not Recognized - Error Code 43

[Ferzender Varli]

Posted on May 07, 2018 at 03:30

Hi

I've been using STM32F407VG for a long time. Today i got an error when i plug in my laptop and i can not solve this problem over 8 hours. When i connected the STM to PC, the error message was USB Device Not Recognized - Error Code 43. We tried a lot of ways to fix the error such as STM, enter device manager uninstalled and reinstalled. While i pressed the reset button, i tried to load the code on Keil v5, but the two error messages were no ST-LINK detected (Debugger - Cortex-M error) and flash download failed target dll has been cancelled.  I have tried to do it on the board some SWD pins, i tried to do cirtcuit close with jumpers

#st-link-detected-administrator #usb

[Amel NASRI]

Posted on May 08, 2018 at 16:32

Hi

fvarlii

‌,

Use

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/stsw-linkhtml

or

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/stm32cubeprog.html

and try to make a Firmware upgrade of the STLink, then gain after that.

-Amel

[Ferzender Varli]

Posted on May 09, 2018 at 18:00

Hi,

The issue not about software, it's about hardware. I measured between +5V - GND. The value of voltage was 2.5V  

I realised that i had short circuit between +5V and GND. So D1 diode has been broken down. Then i removed D1 and replaced by Diode D2. Then I measured between +5V - GND again. The value of voltage betweeen +5V - GND is now 5V. So STM32F4 works properly.

[Ferzender Varli]

Posted on May 09, 2018 at 18:00

Thank you for attention