Keil and stm32CubeMX generated USB CDC project

Stm32User · ‎2015-02-13

Posted on February 13, 2015 at 17:40

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 ?

mihnea95rusu · ‎2015-02-26

Posted on February 27, 2015 at 04:40

Hey,

I have the same problem, just on an STM32F072 Discovery board instead. Have you found a fix yet? I've contacted ST support about this, I'll post on here as soon as they respond.

mihnea95rusu · ‎2015-03-02

Posted on March 02, 2015 at 15:24

ST responded. They directed me to

http://www.emcu.it/STM32Cube/STM32Cube.html

. I still can't figure out how to do it... If anyone has implemented the CDC class on an STM32F0, please tell us how you did it!

edward · ‎2015-03-27

Posted on March 27, 2015 at 09:11

Did you figure out what the problem was? I'm on a STM32L053C8 Discovery board and I have exactly the same problem - usb code generated by CubeMX doesn't work, albeit the example applications from the Cube package do.

Amel NASRI · ‎2015-03-30

Posted on March 30, 2015 at 10:46

Did you increased the stack size (Ex: 0x2000)?

-Mayla-

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stm32cube-t · ‎2015-07-01

Posted on July 01, 2015 at 11:45

Fixed in MX 4.7

The issue was PB0,PB1, PA2,PA3,PA6,PA7 not configured properly.

mahesh · ‎2015-07-06

Posted on July 07, 2015 at 07:15

Hi all,

I have created code using CUBEMX for stm32 L0.I am able to send and receive data only one time but multiple time receive and sending is not happening . what may be the issue ..