descriptors.h

freemodbus-v019.zip 是v0.19版本的代码

/************************************************************************************
 * Copyright @ 1995-2005 metrowerks inc. All rights reserved.                       *
 *                                                                                  *
 *                                                                                  *
 *    $RCSfile: descriptors.h,v $                                                            *
 *    $Revision: 1.1 $                                                              *
 *    $Date: 2006/05/14 21:59:16 $                                                  *
 *                                                                                  *
 * DESCRIPTION                                                                      *
 *   USB Descriptors definitions.                                                   *
 *                                                                                  *
 *                                                                                  *
 *                                                                                  *
 * NOTE                                                                             *
 *                                                                                  *
 *                                                                                  *
 *                                                                                  *
 * HISTORY                                                                          *
 *                                                                                  *	
 ************************************************************************************/


#ifndef DESCRIPTOR_H
#define DESCRIPTOR_H

/********************************************************************/

/* USB descriptor types */
#define DEVICE					1
#define CONFIGURATION			2
#define STRING					3
#define INTERFACE				4
#define ENDPOINT				5

/* USB Standard Request Types - bRequestType */
#define IN						0x80
#define OUT						0x00
#define STANDARD				0x00
#define CLASS					0x20
#define VENDOR					0x40
#define RQ_DEVICE				0x00
#define RQ_INTERFACE			0x01
#define RQ_ENDPOINT			0x02

/* USB Standard Request Codes - bRequest */
#define GET_STATUS			0
#define CLEAR_FEATURE		1
#define SET_FEATURE			3
#define SET_ADDRESS			5
#define GET_DESCRIPTOR		6
#define SET_DESCRIPTOR		7
#define GET_CONFIGURATION	8
#define SET_CONFIGURATION	9
#define GET_INTERFACE		10
#define SET_INTERFACE		11
#define SYNCH_FRAME			12

/* Configuration bmAttributes fields */
#define BUS_POWERED			0x80
#define SELF_POWERED			0xC0
#define REMOTE_WAKEUP		0xA0

/* Endpoint bmAttributes fields */
#define CONTROL				0x00
#define ISOCHRONOUS			0x01
#define BULK					0x02
#define INTERRUPT				0x03
#define DISABLED				0xFF

/* Standard Feature Selectors */
#define DEVICE_REMOTE_WAKEUP	1
#define ENDPOINT_HALT			0

/* Structure for USB Device Descriptors */
typedef struct
{
    uint8           bLength;
    uint8           bDescriptorType;
    uint8           bcdUSBL;
    uint8           bcdUSBH;
    uint8           bDeviceClass;
    uint8           bDeviceSubClass;
    uint8           bDeviceProtocol;
    uint8           bMaxPacketSize0;
    uint8           idVendorL;
    uint8           idVendorH;
    uint8           idProductL;
    uint8           idProductH;
    uint8           bcdDeviceL;
    uint8           bcdDeviceH;
    uint8           iManufacturer;
    uint8           iProduct;
    uint8           iSerialNumber;
    uint8           bNumConfigurations;
} USB_DEVICE_DESC;

/* Structure for USB Configuration Descriptors */
typedef struct
{
    uint8           bLength;
    uint8           bDescriptorType;
    uint8           wTotalLengthL;
    uint8           wTotalLengthH;
    uint8           bNumInterfaces;
    uint8           bConfigurationValue;
    uint8           iConfiguration;
    uint8           bmAttributes;
    uint8           maxPower;
} USB_CONFIG_DESC;

/* Structure for USB Interface Descriptors */
typedef struct
{
    uint8           bLength;
    uint8           bDescriptorType;
    uint8           bInterfaceNumber;
    uint8           bAlternateSetting;
    uint8           bNumEndpoints;
    uint8           bInterfaceClass;
    uint8           bInterfaceSubClass;
    uint8           bInterfaceProtocol;
    uint8           iInterface;
} USB_INTERFACE_DESC;

/* Structure for USB Endpoint Descriptors */
typedef struct
{
    uint8           bLength;
    uint8           bDescriptorType;
    uint8           bEndpointAddress;
    uint8           bmAttributes;
    uint8           wMaxPacketSizeL;
    uint8           wMaxPacketSizeH;
    uint8           bInterval;
} USB_ENDPOINT_DESC;

/* Structure for USB String Descriptors */
typedef struct
{
    uint8           bLength;
    uint8           bDescriptorType;
    uint8          *bString;
} USB_STRING_DESC;

/********************************************************************/

#endif /* DESCRIPTOR_H */