Description
Sends data on interrupt IN endpoint asynchronously.
Files
usbd_core.h/usbd_core.c
Prototype
Arguments
dev_nbr
Device number.
ep_addr
Endpoint address.
p_buf
Pointer to buffer of data that will be transmitted
buf_len
Number of octets to transmit.
async_fnct
Function that will be invoked upon completion of transmit operation.
p_async_arg
Pointer to argument that will be passed as parameter of async_fnct. (see Note #2)
end
End-of-transfer flag (see Note #1).
p_err
Pointer to variable that will receive the return error code from this function.
USBD_ERR_NONE
USBD_ERR_DEV_INVALID_NBR
USBD_ERR_DEV_INVALID_STATE
USBD_ERR_EP_INVALID_ADDR
USBD_ERR_EP_INVALID_STATE
USBD_ERR_EP_INVALID_TYPE
USBD_ERR_OS_TIMEOUT
USBD_ERR_OS_ABORT
USBD_ERR_OS_FAIL
Returned Value
None.
Callers
Classes.
Notes / Warnings
- If end-of-transfer is set and transfer length is multiple of maximum packet size, a zero-length packet is transferred to indicate a short transfer to the host.
- The callback specified by
async_fncthas the following prototype.
Argument(s)
dev_nbr
Device number.
ep_addr
Endpoint address.
p_buf
Pointer to buffer of data that will be transmitted.
buf_len
Buffer length.
xfer_len
Number of byte transmitted.
p_arg
Pointer to function argument.
err
Error status.
USBD_ERR_NONE
USBD_ERR_EP_ABORT