STM32 USB data transmission (BULK, ISOCHRONOUS)

sangjin97 · ‎2010-03-21

Posted on March 22, 2010 at 06:29

Tomas DRESLER · ‎2011-05-17

Posted on May 17, 2011 at 13:44

Hello Hyun,

I give you only one advice: learn USB a lot, it's not that simple.

Start with an online book ''USB in a nutshell'', then add the USB specification and profile/class specifications from usb.org.

For the audiospeaker, did you prepare correct descriptors for the IN data transfer? Does your audio class description support recording? Do you describe, which sampling frequencies, data widths, codecs are offered y your soundcard?

Concerning the bulk transfer, which class do you want to use? You'll need specific driver, please check e.g. Jungo driver suite, it may help you in getting the transfers done.

But don't expect easy answers, they don't exist...

sangjin97 · ‎2011-05-17

Posted on May 17, 2011 at 13:44

Hi edison?

I really appreciate your help.

Your answer is helpful for me

Thank you. 🙂

aherson2 · ‎2011-05-17

Posted on May 17, 2011 at 13:44

Hi all,

I was wondering if you have had any more success with the interrupts for your audio example? I am also having trouble generating interrupts from the Custom HID example in IAR. In a Keil version, I was able to accomplish the task but the IAR doesn't work. I think the problem is during the configuration stage of the USB enumeration, but I'm not sure. Any suggestions?

Thanks