USB is not detected in the STM32L433RBT6 64-LQFP

[P_satyanarayana]

We are using STM32L433RBT6 64-LQFP in one of the projects. When we trying to communicate to PC through USB port, USB is not detected in PC, it shows error in device manager (error image is attached for your reference).

Also find the USB schematics images for your reference. Pls suggest if anything we missed.

[Imen.D]

Hello @P_satyanarayana ,

Try using a different USB cable to rule out any issues with the cable.

Ensure that the USB D+ (DP) and D- (DM) lines are correctly connected and not swapped.

[P_satyanarayana]

Hi Imen.D,

    1) We tested with different cables, also D+, D- are connected correctly.

     2) Please validate the attached USB schematics and conform anything we missed.

     

 

 

[Tesla DeLorean]

You've got any firmware supporting an USB Device? Or just blank?

What happens if you strap BOOT0 High?

Does your clock start?

[P_satyanarayana]

Q) You've got any firmware supporting an USB Device? Or just blank?

Ans: We are using STM USB drivers generated from Cube MX

Q) What happens if you strap BOOT0 High?

A) We are using Boot0 pin is Low. 

  Strap Boot0 pin is high condition. i will test and update to you as soon as possible.

Q) Does your clock start?

A) we are using the internal oscillator.

Q) Did you verify USB circuit connections in the attached schematics?