stm32cube problem with USB

Posted on May 13, 2014 at 20:55

I make a project and USB device CDC .(stm32f4discovery)

compile and run.

when i connect usb , my computer knows Stm32 CDC . but not work,

exclamation in device manager on com16.

i install driver and test by stm32f103 example and it was work.

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Associate II

Posted on May 13, 2014 at 22:21

salam nima jan,

If you made the project with cubemx and you are using fullspeed interface, then you have to change the

USB_OTG_HS_MAX_PACKET_SIZE from 512 to 64

in this file:

STM32f4xx_ll_usb.h

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