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STM32F072-EVAL CDC won't work

Question asked by Vincent Doyon on Feb 23, 2018
Latest reply on Mar 2, 2018 by Vincent Doyon



      I tried to run the example on STM32F072-EVAL found in  STMicroelectronics\STM32Cube_FW_F0_V1.9.0\Projects\STM32072B_EVAL\Applications\USB_Device\CDC_Standalone.


When I plug CN4 USB connector to my PC, I see a STMicroelectronics Virtual COM Port (COM3) appear but with an exclamation mark. I have the error code "This device cannot start. (Code 10))


My PC has Windows 10.


1) I tried to reinstall the drivers (even if it is not necessary for Windows 10)

2) I tried to increase the stack and the heap

3) I tried to change my bDeviceClass and bDeviceSubClass to 2


Unfortunately, I had no success with those modifications. Can somebody help me with that problem ?