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USBD_HID_Wr

USBD_HID_Wr

Dec 03, 2020

Description

Transmits data to the host through an interrupt IN endpoint.

Files

usbd_hid.h/usbd_hid.c

Prototype

CPU_INT32U  USBD_HID_Wr (CPU_INT08U   class_nbr,
                         void        *p_buf,
                         CPU_INT32U   buf_len,
                         CPU_INT16U   timeout,
                         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.

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 transmitted, if NO error(s).

0, otherwise.

Callers

Application.

Notes / Warnings

None.