Description
Transmits data to host asynchronously through an interrupt IN endpoint.
Files
usbd_hid.h/usbd_hid.c
Prototype
Arguments
class_nbr
Class instance number.
p_buf
Pointer to transmit buffer.
buf_len
Transmit buffer length, in octets.
async_fnct
Transmit callback.
p_async_arg
Additional argument provided by application for transmit callback.
p_err
Pointer to variable that will receive the return error code from this function.
USBD_ERR_NONE
USBD_ERR_NULL_PTR
USBD_ERR_INVALID_ARG
USBD_ERR_INVALID_CLASS_STATE
USBD_ERR_FAIL
USBD_ERR_DEV_INVALID_NBR
USBD_ERR_EP_INVALID_NBR
USBD_ERR_DEV_INVALID_STATE
USBD_ERR_EP_INVALID_TYPE
USBD_ERR_EP_INVALID_STATE
Returned Value
None.
Callers
Application.
Notes / Warnings
This function is non-blocking and returns immediately after transfer preparation. Upon transfer completion, the callback provided is called to notify the application.