usb_common.h

来自「freescale atk source code」· C头文件 代码 · 共 65 行

/*==================================================================================================

====================================================================================================

    Module Name:  usb_common.h

    General Description: This file contains the variables common to all usb 
    layers.
====================================================================================================
    Copyright (C) 2006, Freescale Semiconductor, Inc. All Rights Reserved
    THIS SOURCE CODE IS CONFIDENTIAL AND PROPRIETARY AND MAY NOT
    BE USED OR DISTRIBUTED WITHOUT THE WRITTEN PERMISSION OF
    Freescale Semiconductor, Inc.

Revision History:
                            Modification     Tracking
Author                      Date (mm/dd/yy)   Number     Description of Changes
-------------------------   ------------    ----------   -------------------------------------------
Bharat Bhushan               05/10/2006     TLSbo68884   Initial Version ( USB Layer Architecture).
====================================================================================================
                                        INCLUDE FILES
==================================================================================================*/

#ifndef USB_COMMON_H
#define USB_COMMON_H

#ifdef __cplusplus
extern "C" {
#endif

#include <suapi.h>

/* USB Device State which are handled by DCD */
typedef enum
{
    USB_DEV_DUMMY_STATE,
    USB_DEV_DEFAULT_STATE,
    USB_DEV_ADDRESSED_STATE,
    USB_DEV_CONFIGURED_STATE
}usb_state_t;


/* Buffer descriptor used for data transfer on USB */
typedef struct {
    void * buffer ;	/* Address of the buffer to/from data is to be transmitted */
    U32 size ;          /*  size of the buffer to  be transmitted/recieved */
    U32 bytes_transfered; /* actual number of bytes transfered */
}usb_buffer_descriptor_t;

/* Status of all transaction on USB */
typedef enum
{
    USB_SUCCESS,
    USB_FAILURE,
    USB_INVALID = -1 /* Always Keep this entry in last */
}usb_status_t;

#ifdef __cplusplus
} /* extern C++ */
#endif

#endif  /* USB_COMMON_H */