【温故而知新】类似文章浅析USB HID ReportDesc (HID报告描述符)
现在将en.stm32cubef1\STM32Cube_FW_F1_V1.4.0\Middlewares\ST\STM32_USB_Host_Library\Core\Inc\usbh_def.H
/**
******************************************************************************
* @file usbh_def.h
* @author MCD Application Team
* @version V3.2.2
* @date 07-July-2015
* @brief Definitions used in the USB host library
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/ /* Define to prevent recursive ----------------------------------------------*/
#ifndef USBH_DEF_H
#define USBH_DEF_H #ifdef __cplusplus
extern "C" {
#endif /* Includes ------------------------------------------------------------------*/
#include "usbh_conf.h" /** @addtogroup USBH_LIB
* @{
*/ /** @addtogroup USBH_LIB_CORE
* @{
*/ /** @defgroup USBH_DEF
* @brief This file is includes USB descriptors
* @{
*/ #ifndef NULL
#define NULL 0
#endif #ifndef FALSE
#define FALSE 0
#endif #ifndef TRUE
#define TRUE 1
#endif #define ValBit(VAR,POS) (VAR & (1 << POS))
#define SetBit(VAR,POS) (VAR |= (1 << POS))
#define ClrBit(VAR,POS) (VAR &= ((1 << POS)^255)) #define LE16(addr) (((uint16_t)(*((uint8_t *)(addr))))\
+ (((uint16_t)(*(((uint8_t *)(addr)) + ))) << )) #define LE16S(addr) (uint16_t)(LE16((addr))) #define LE32(addr) ((((uint32_t)(*(((uint8_t *)(addr)) + 0))) + \
(((uint32_t)(*(((uint8_t *)(addr)) + ))) << ) + \
(((uint32_t)(*(((uint8_t *)(addr)) + ))) << ) + \
(((uint32_t)(*(((uint8_t *)(addr)) + ))) << ))) #define LE64(addr) ((((uint64_t)(*(((uint8_t *)(addr)) + 0))) + \
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ) +\
(((uint64_t)(*(((uint8_t *)(addr)) + ))) << ))) #define LE24(addr) ((((uint32_t)(*(((uint8_t *)(addr)) + 0))) + \
(((uint32_t)(*(((uint8_t *)(addr)) + ))) << ) + \
(((uint32_t)(*(((uint8_t *)(addr)) + ))) << ))) #define LE32S(addr) (int32_t)(LE32((addr))) #define USB_LEN_DESC_HDR 0x02
#define USB_LEN_DEV_DESC 0x12
#define USB_LEN_CFG_DESC 0x09
#define USB_LEN_IF_DESC 0x09
#define USB_LEN_EP_DESC 0x07
#define USB_LEN_OTG_DESC 0x03
#define USB_LEN_SETUP_PKT 0x08 /* bmRequestType :D7 Data Phase Transfer Direction */
#define USB_REQ_DIR_MASK 0x80
#define USB_H2D 0x00
#define USB_D2H 0x80 /* bmRequestType D6..5 Type */
#define USB_REQ_TYPE_STANDARD 0x00
#define USB_REQ_TYPE_CLASS 0x20
#define USB_REQ_TYPE_VENDOR 0x40
#define USB_REQ_TYPE_RESERVED 0x60 /* bmRequestType D4..0 Recipient */
#define USB_REQ_RECIPIENT_DEVICE 0x00
#define USB_REQ_RECIPIENT_INTERFACE 0x01
#define USB_REQ_RECIPIENT_ENDPOINT 0x02
#define USB_REQ_RECIPIENT_OTHER 0x03 /* Table 9-4. Standard Request Codes */
/* bRequest , Value */
#define USB_REQ_GET_STATUS 0x00
#define USB_REQ_CLEAR_FEATURE 0x01
#define USB_REQ_SET_FEATURE 0x03
#define USB_REQ_SET_ADDRESS 0x05
#define USB_REQ_GET_DESCRIPTOR 0x06
#define USB_REQ_SET_DESCRIPTOR 0x07
#define USB_REQ_GET_CONFIGURATION 0x08
#define USB_REQ_SET_CONFIGURATION 0x09
#define USB_REQ_GET_INTERFACE 0x0A
#define USB_REQ_SET_INTERFACE 0x0B
#define USB_REQ_SYNCH_FRAME 0x0C /* Table 9-5. Descriptor Types of USB Specifications */
#define USB_DESC_TYPE_DEVICE 1
#define USB_DESC_TYPE_CONFIGURATION 2
#define USB_DESC_TYPE_STRING 3
#define USB_DESC_TYPE_INTERFACE 4
#define USB_DESC_TYPE_ENDPOINT 5
#define USB_DESC_TYPE_DEVICE_QUALIFIER 6
#define USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION 7
#define USB_DESC_TYPE_INTERFACE_POWER 8
#define USB_DESC_TYPE_HID 0x21
#define USB_DESC_TYPE_HID_REPORT 0x22 #define USB_DEVICE_DESC_SIZE 18
#define USB_CONFIGURATION_DESC_SIZE 9
#define USB_HID_DESC_SIZE 9
#define USB_INTERFACE_DESC_SIZE 9
#define USB_ENDPOINT_DESC_SIZE 7 /* Descriptor Type and Descriptor Index */
/* Use the following values when calling the function USBH_GetDescriptor */
#define USB_DESC_DEVICE ((USB_DESC_TYPE_DEVICE << 8) & 0xFF00)
#define USB_DESC_CONFIGURATION ((USB_DESC_TYPE_CONFIGURATION << 8) & 0xFF00)
#define USB_DESC_STRING ((USB_DESC_TYPE_STRING << 8) & 0xFF00)
#define USB_DESC_INTERFACE ((USB_DESC_TYPE_INTERFACE << 8) & 0xFF00)
#define USB_DESC_ENDPOINT ((USB_DESC_TYPE_INTERFACE << 8) & 0xFF00)
#define USB_DESC_DEVICE_QUALIFIER ((USB_DESC_TYPE_DEVICE_QUALIFIER << 8) & 0xFF00)
#define USB_DESC_OTHER_SPEED_CONFIGURATION ((USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION << 8) & 0xFF00)
#define USB_DESC_INTERFACE_POWER ((USB_DESC_TYPE_INTERFACE_POWER << 8) & 0xFF00)
#define USB_DESC_HID_REPORT ((USB_DESC_TYPE_HID_REPORT << 8) & 0xFF00)
#define USB_DESC_HID ((USB_DESC_TYPE_HID << 8) & 0xFF00) #define USB_EP_TYPE_CTRL 0x00
#define USB_EP_TYPE_ISOC 0x01
#define USB_EP_TYPE_BULK 0x02
#define USB_EP_TYPE_INTR 0x03 #define USB_EP_DIR_OUT 0x00
#define USB_EP_DIR_IN 0x80
#define USB_EP_DIR_MSK 0x80 #ifndef USBH_MAX_PIPES_NBR
#define USBH_MAX_PIPES_NBR 15
#endif /* USBH_MAX_PIPES_NBR */ #define USBH_DEVICE_ADDRESS_DEFAULT 0
#define USBH_MAX_ERROR_COUNT 2
#define USBH_DEVICE_ADDRESS 1 /**
* @}
*/ #define USBH_CONFIGURATION_DESCRIPTOR_SIZE (USB_CONFIGURATION_DESC_SIZE \
+ USB_INTERFACE_DESC_SIZE\
+ (USBH_MAX_NUM_ENDPOINTS * USB_ENDPOINT_DESC_SIZE)) #define CONFIG_DESC_wTOTAL_LENGTH (ConfigurationDescriptorData.ConfigDescfield.\
ConfigurationDescriptor.wTotalLength) typedef union
{
uint16_t w;
struct BW
{
uint8_t msb;
uint8_t lsb;
}
bw;
}
uint16_t_uint8_t; typedef union _USB_Setup
{
uint32_t d8[]; struct _SetupPkt_Struc
{
uint8_t bmRequestType;
uint8_t bRequest;
uint16_t_uint8_t wValue;
uint16_t_uint8_t wIndex;
uint16_t_uint8_t wLength;
} b;
}
USB_Setup_TypeDef; typedef struct _DescHeader
{
uint8_t bLength;
uint8_t bDescriptorType;
}
USBH_DescHeader_t; typedef struct _DeviceDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint16_t bcdUSB; /* USB Specification Number which device complies too */
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
/* If equal to Zero, each interface specifies its own class
code if equal to 0xFF, the class code is vendor specified.
Otherwise field is valid Class Code.*/
uint8_t bMaxPacketSize;
uint16_t idVendor; /* Vendor ID (Assigned by USB Org) */
uint16_t idProduct; /* Product ID (Assigned by Manufacturer) */
uint16_t bcdDevice; /* Device Release Number */
uint8_t iManufacturer; /* Index of Manufacturer String Descriptor */
uint8_t iProduct; /* Index of Product String Descriptor */
uint8_t iSerialNumber; /* Index of Serial Number String Descriptor */
uint8_t bNumConfigurations; /* Number of Possible Configurations */
}
USBH_DevDescTypeDef; typedef struct _EndpointDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bEndpointAddress; /* indicates what endpoint this descriptor is describing */
uint8_t bmAttributes; /* specifies the transfer type. */
uint16_t wMaxPacketSize; /* Maximum Packet Size this endpoint is capable of sending or receiving */
uint8_t bInterval; /* is used to specify the polling interval of certain transfers. */
}
USBH_EpDescTypeDef; typedef struct _InterfaceDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bInterfaceNumber;
uint8_t bAlternateSetting; /* Value used to select alternative setting */
uint8_t bNumEndpoints; /* Number of Endpoints used for this interface */
uint8_t bInterfaceClass; /* Class Code (Assigned by USB Org) */
uint8_t bInterfaceSubClass; /* Subclass Code (Assigned by USB Org) */
uint8_t bInterfaceProtocol; /* Protocol Code */
uint8_t iInterface; /* Index of String Descriptor Describing this interface */
USBH_EpDescTypeDef Ep_Desc[USBH_MAX_NUM_ENDPOINTS];
}
USBH_InterfaceDescTypeDef; typedef struct _ConfigurationDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint16_t wTotalLength; /* Total Length of Data Returned */
uint8_t bNumInterfaces; /* Number of Interfaces */
uint8_t bConfigurationValue; /* Value to use as an argument to select this configuration*/
uint8_t iConfiguration; /*Index of String Descriptor Describing this configuration */
uint8_t bmAttributes; /* D7 Bus Powered , D6 Self Powered, D5 Remote Wakeup , D4..0 Reserved (0)*/
uint8_t bMaxPower; /*Maximum Power Consumption */
USBH_InterfaceDescTypeDef Itf_Desc[USBH_MAX_NUM_INTERFACES];
}
USBH_CfgDescTypeDef; /* Following USB Host status */
typedef enum
{
USBH_OK = ,
USBH_BUSY,
USBH_FAIL,
USBH_NOT_SUPPORTED,
USBH_UNRECOVERED_ERROR,
USBH_ERROR_SPEED_UNKNOWN,
}USBH_StatusTypeDef; /** @defgroup USBH_CORE_Exported_Types
* @{
*/ typedef enum
{
USBH_SPEED_HIGH = ,
USBH_SPEED_FULL = ,
USBH_SPEED_LOW = , }USBH_SpeedTypeDef; /* Following states are used for gState */
typedef enum
{
HOST_IDLE =,
HOST_DEV_WAIT_FOR_ATTACHMENT,
HOST_DEV_ATTACHED,
HOST_DEV_DISCONNECTED,
HOST_DETECT_DEVICE_SPEED,
HOST_ENUMERATION,
HOST_CLASS_REQUEST,
HOST_INPUT,
HOST_SET_CONFIGURATION,
HOST_CHECK_CLASS,
HOST_CLASS,
HOST_SUSPENDED,
HOST_ABORT_STATE,
}HOST_StateTypeDef; /* Following states are used for EnumerationState */
typedef enum
{
ENUM_IDLE = ,
ENUM_GET_FULL_DEV_DESC,
ENUM_SET_ADDR,
ENUM_GET_CFG_DESC,
ENUM_GET_FULL_CFG_DESC,
ENUM_GET_MFC_STRING_DESC,
ENUM_GET_PRODUCT_STRING_DESC,
ENUM_GET_SERIALNUM_STRING_DESC,
} ENUM_StateTypeDef; /* Following states are used for CtrlXferStateMachine */
typedef enum
{
CTRL_IDLE =,
CTRL_SETUP,
CTRL_SETUP_WAIT,
CTRL_DATA_IN,
CTRL_DATA_IN_WAIT,
CTRL_DATA_OUT,
CTRL_DATA_OUT_WAIT,
CTRL_STATUS_IN,
CTRL_STATUS_IN_WAIT,
CTRL_STATUS_OUT,
CTRL_STATUS_OUT_WAIT,
CTRL_ERROR,
CTRL_STALLED,
CTRL_COMPLETE
}CTRL_StateTypeDef; /* Following states are used for RequestState */
typedef enum
{
CMD_IDLE =,
CMD_SEND,
CMD_WAIT
} CMD_StateTypeDef; typedef enum {
USBH_URB_IDLE = ,
USBH_URB_DONE,
USBH_URB_NOTREADY,
USBH_URB_NYET,
USBH_URB_ERROR,
USBH_URB_STALL
}USBH_URBStateTypeDef; typedef enum
{
USBH_PORT_EVENT = ,
USBH_URB_EVENT,
USBH_CONTROL_EVENT,
USBH_CLASS_EVENT,
USBH_STATE_CHANGED_EVENT,
}
USBH_OSEventTypeDef; /* Control request structure */
typedef struct
{
uint8_t pipe_in;
uint8_t pipe_out;
uint8_t pipe_size;
uint8_t *buff;
uint16_t length;
uint16_t timer;
USB_Setup_TypeDef setup;
CTRL_StateTypeDef state;
uint8_t errorcount; } USBH_CtrlTypeDef; /* Attached device structure */
typedef struct
{
#if (USBH_KEEP_CFG_DESCRIPTOR == 1)
uint8_t CfgDesc_Raw[USBH_MAX_SIZE_CONFIGURATION];
#endif
uint8_t Data[USBH_MAX_DATA_BUFFER];
uint8_t address;
uint8_t speed;
__IO uint8_t is_connected;
uint8_t current_interface;
USBH_DevDescTypeDef DevDesc;
USBH_CfgDescTypeDef CfgDesc; }USBH_DeviceTypeDef; struct _USBH_HandleTypeDef; /* USB Host Class structure */
typedef struct
{
const char *Name;
uint8_t ClassCode;
USBH_StatusTypeDef (*Init) (struct _USBH_HandleTypeDef *phost);
USBH_StatusTypeDef (*DeInit) (struct _USBH_HandleTypeDef *phost);
USBH_StatusTypeDef (*Requests) (struct _USBH_HandleTypeDef *phost);
USBH_StatusTypeDef (*BgndProcess) (struct _USBH_HandleTypeDef *phost);
USBH_StatusTypeDef (*SOFProcess) (struct _USBH_HandleTypeDef *phost);
void* pData;
} USBH_ClassTypeDef; /* USB Host handle structure */
typedef struct _USBH_HandleTypeDef
{
__IO HOST_StateTypeDef gState; /* Host State Machine Value */
ENUM_StateTypeDef EnumState; /* Enumeration state Machine */
CMD_StateTypeDef RequestState;
USBH_CtrlTypeDef Control;
USBH_DeviceTypeDef device;
USBH_ClassTypeDef* pClass[USBH_MAX_NUM_SUPPORTED_CLASS];
USBH_ClassTypeDef* pActiveClass;
uint32_t ClassNumber;
uint32_t Pipes[];
__IO uint32_t Timer;
uint8_t id;
void* pData;
void (* pUser )(struct _USBH_HandleTypeDef *pHandle, uint8_t id); #if (USBH_USE_OS == 1)
osMessageQId os_event;
osThreadId thread;
#endif } USBH_HandleTypeDef; #if defined ( __GNUC__ )
#ifndef __weak
#define __weak __attribute__((weak))
#endif /* __weak */
#ifndef __packed
#define __packed __attribute__((__packed__))
#endif /* __packed */
#endif /* __GNUC__ */ #ifdef __cplusplus
}
#endif #endif /* USBH_DEF_H */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
现在我们先看看 USBH_DevDescTypeDef结构体
/* Attached device structure */
typedef struct
{
#if (USBH_KEEP_CFG_DESCRIPTOR == 1)
uint8_t CfgDesc_Raw[USBH_MAX_SIZE_CONFIGURATION];
#endif
uint8_t Data[USBH_MAX_DATA_BUFFER];
uint8_t address;
uint8_t speed;
__IO uint8_t is_connected;
uint8_t current_interface;
USBH_DevDescTypeDef DevDesc;
USBH_CfgDescTypeDef CfgDesc; }USBH_DeviceTypeDef;
在看 USBH_DevDescTypeDef DevDesc之前我们先看 Universal Serial Bus Specification Revision 2.0 的
Table 9-8. Standard Device Descriptor
会发现USBH_DevDescTypeDef DevDesc就是上面的表格
typedef struct _DeviceDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint16_t bcdUSB; /* USB Specification Number which device complies too */
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
/* If equal to Zero, each interface specifies its own class
code if equal to 0xFF, the class code is vendor specified.
Otherwise field is valid Class Code.*/
uint8_t bMaxPacketSize;
uint16_t idVendor; /* Vendor ID (Assigned by USB Org) */
uint16_t idProduct; /* Product ID (Assigned by Manufacturer) */
uint16_t bcdDevice; /* Device Release Number */
uint8_t iManufacturer; /* Index of Manufacturer String Descriptor */
uint8_t iProduct; /* Index of Product String Descriptor */
uint8_t iSerialNumber; /* Index of Serial Number String Descriptor */
uint8_t bNumConfigurations; /* Number of Possible Configurations */
}
USBH_DevDescTypeDef;
在看 USBH_CfgDescTypeDef CfgDesc;之前我们看看
Table 9-10. Standard Configuration Descriptor
但是我们USBH_CfgDescTypeDef CfgDesc中多了USBH_InterfaceDescTypeDef Itf_Desc[USBH_MAX_NUM_INTERFACES]
typedef struct _ConfigurationDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint16_t wTotalLength; /* Total Length of Data Returned */
uint8_t bNumInterfaces; /* Number of Interfaces */
uint8_t bConfigurationValue; /* Value to use as an argument to select this configuration*/
uint8_t iConfiguration; /*Index of String Descriptor Describing this configuration */
uint8_t bmAttributes; /* D7 Bus Powered , D6 Self Powered, D5 Remote Wakeup , D4..0 Reserved (0)*/
uint8_t bMaxPower; /*Maximum Power Consumption */
USBH_InterfaceDescTypeDef Itf_Desc[USBH_MAX_NUM_INTERFACES];
}
USBH_CfgDescTypeDef;
我们继续翻书
Table 9-12. Standard Interface Descriptor
我们会发现USBH_InterfaceDescTypeDef中有多了 USBH_EpDescTypeDef Ep_Desc[USBH_MAX_NUM_ENDPOINTS];
typedef struct _InterfaceDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bInterfaceNumber;
uint8_t bAlternateSetting; /* Value used to select alternative setting */
uint8_t bNumEndpoints; /* Number of Endpoints used for this interface */
uint8_t bInterfaceClass; /* Class Code (Assigned by USB Org) */
uint8_t bInterfaceSubClass; /* Subclass Code (Assigned by USB Org) */
uint8_t bInterfaceProtocol; /* Protocol Code */
uint8_t iInterface; /* Index of String Descriptor Describing this interface */
USBH_EpDescTypeDef Ep_Desc[USBH_MAX_NUM_ENDPOINTS];
}
USBH_InterfaceDescTypeDef;
还是老规则先翻书
Table 9-13. Standard Endpoint Descriptor
typedef struct _EndpointDescriptor
{
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bEndpointAddress; /* indicates what endpoint this descriptor is describing */
uint8_t bmAttributes; /* specifies the transfer type. */
uint16_t wMaxPacketSize; /* Maximum Packet Size this endpoint is capable of sending or receiving */
uint8_t bInterval; /* is used to specify the polling interval of certain transfers. */
}
USBH_EpDescTypeDef;
其实上面的描述符
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