USBD_Vendor_IntrWr

Description

Send data to host through Interrupt IN endpoint. This function is blocking.

Files

usbd_vendor.h / usbd_vendor.c

Prototype

CPU_INT32U  USBD_Vendor_IntrWr (CPU_INT08U    class_nbr,
                                void         *p_buf,
                                CPU_INT32U    buf_len,
                                CPU_INT16U    timeout,
                                CPU_BOOLEAN   end,
                                USBD_ERR     *p_err);

Arguments

class_nbr

Class instance number.

p_buf

Pointer to transmit buffer.

buf_len

Transmit buffer length in octets.

timeout

Timeout in milliseconds.

end

End-of-transfer flag.

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_DEV_INVALID_NBR

USBD_ERR_EP_INVALID_NBR

USBD_ERR_DEV_INVALID_STATE

USBD_ERR_EP_INVALID_TYPE

Returned Value

Number of octets sent, if NO error(s).

0, otherwise.

Callers

Application.

Notes / Warnings

If end-of-transfer flag is set and transfer length is multiple of maximum packet size, a zero-length packet is transferred to indicate the end of transfer to the host.