Pend on a request from the playback's task queue.

usbd_audio_os.h / usbd_audio_os.c

void  *USBD_Audio_OS_PlaybackReqPend (USBD_ERR  *p_err);

p_err

Pointer to variable that will receive the return error code from this function.

USBD_ERR_NONE

USBD_ERR_OS_TIMEOUT

USBD_ERR_OS_ABORT

USBD_ERR_OS_FAIL

Pointer to playback request, if NO error(s).

Null pointer, otherwise.

Audio Class.

Typical implementation will consist in pending on a queue.

p_err argument should be assigned as described in following table.

Table - Error Code Assignment for Pending on a Playback Request

Operation result	Error code to assign
No error	`USBD_ERR_NONE`
Pend timeout	`USBD_ERR_OS_TIMEOUT`
Pend aborted	`USBD_ERR_OS_ABORT`
Pend failed for any other reason	`USBD_ERR_OS_FAIL`

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