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Keil and stm32CubeMX generated USB CDC project

Question asked by mcwiggin.patrick on Feb 13, 2015
Latest reply on Jul 7, 2015 by bhagoji.mahesh.001
I generated a USB CDC driver using Cube MX for the STM32L0538 DISCO. This compiled and linked and connected to a PC.

I tried to send some bytes using CDC_Transmit() but I then get USB NOT RECOGNIZED.Seems to be a hardfault in the call to USBD_CDC_SetTxBuffer()

Any ideas ?

Can anyone offer any guidance on how to use these function or an example to crib ?