stm32cube problem with USB

[askari.nima]

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.

[arsalan_elec]

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