USB Audio Device - Speaker

[lkolaszewski9]

Posted on January 30, 2009 at 09:02

USB Audio Device - Speaker

[lkolaszewski9]

Posted on May 17, 2011 at 13:01

Hi,

Does anybody has expirience with USB Audio Demo from ST USBLib? I'm trying to make STM32 based, USB speaker. With configuration stereo/16bit/44100kHz. I'm starting with this Demo, but it works only with default configuration mono/8bit/22000kHz. I don't know where is the problem, maybe descriptor. Any suggestion? Lucas [ This message was edited by: l.kolaszewski on 29-01-2009 17:24 ]

[lkolaszewski9]

Posted on May 17, 2011 at 13:01

Problem solved, reason was pointers bug. There is only 512 bytes of dedicated USB memory, and this size can't be overdraw. Otherwise it causes in USB system malfunction.

Lucas [ This message was edited by: l.kolaszewski on 31-01-2009 14:29 ]

[maggie]

Posted on July 30, 2014 at 04:41

Hi Lucas - what specific STM32 part no. are you using? Is your board an eval board? Is your flow chart something like this?

[PC] --USB--> [MCU] --I2S--> [CODEC] --> HEADPHONESI'm having issues on above so I was asking. Thanks!

[Tesla DeLorean]

Posted on July 30, 2014 at 05:20

These are posts from 5+ years ago, you'd have a better chance tracking down an email/contact details with Google.

Assume it's an STM32F10x part.