Description
Wait for an AudioStreaming interface to become available and acquire its lock.
Files
usbd_audio_os.h / usbd_audio_os.c
Prototype
Arguments
as_if_nbr
AudioStreaming interface index.
timeout_ms
Lock wait timeout in milliseconds.
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
Returned Value
None.
Callers
Audio Class.
Implementation Guidelines
Typical implementation will consist in pending on a mutex or binary semaphore.
p_err argument should be assigned as described in following table.