📄 usb.h
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/******************************************************************************
* VAULT INFORMATION SERVICES *
* TEXAS INSTRUMENTS, INC. *
* *
* USB Header File *
* *
*----------------------------------------------------------------------------*
* Programmed by: Lobo Tai (lobotai@ti.com) *
* Develop Date: 30/Sep/2000 *
*----------------------------------------------------------------------------*
* Description: This header file defines constants that relate to the *
* USB standard, such as request values, descriptor types, etc. Constants *
* that are specific to the TUSB2136 architecture are contained in *
* tusb2136.h. *
******************************************************************************/
#ifndef _USB_H_
#define _USB_H_
#ifdef __cplusplus
extern "C"
{
#endif
// DEVICE_REQUEST Structure
typedef struct _tDEVICE_REQUEST
{
BYTE bmRequestType; // See bit definitions below
BYTE bRequest; // See value definitions below
BYTE bValueL; // Meaning varies with request type
BYTE bValueH; // Meaning varies with request type
BYTE bIndexL; // Meaning varies with request type
BYTE bIndexH; // Meaning varies with request type
BYTE bLengthL; // Number of bytes of data to transfer (LSByte)
BYTE bLengthH; // Number of bytes of data to transfer (MSByte)
} tDEVICE_REQUEST, *ptDEVICE_REQUEST;
// device descriptor structure
typedef struct _tDEVICE_DESCRIPTOR
{
BYTE bLength; // Length of this descriptor (12h bytes)
BYTE bDescriptorType; // Type code of this descriptor (01h)
WORD bcdUsb; // Release of USB spec (0210h = rev 2.10)
BYTE bDeviceClass; // Device's base class code
BYTE bDeviceSubClass; // Device's sub class code
BYTE bDeviceProtocol; // Device's protocol type code
BYTE bMaxPacketSize0; // End point 0's max packet size (8/16/32/64)
WORD wIdVendor; // Vendor ID for device
WORD wIdProduct; // Product ID for device
WORD wBcdDevice; // Revision level of device
BYTE wManufacturer; // Index of manufacturer name string desc
BYTE wProduct; // Index of product name string desc
BYTE wSerialNumber; // Index of serial number string desc
BYTE bNumConfigurations; // Number of configurations supported
} tDEVICE_DESCRIPTOR, *ptDEVICE_DESCRIPTOR;
// configuration descriptor structure
typedef struct _tCONFIG_DESCRIPTOR
{
BYTE bLength; // Length of this descriptor (9h bytes)
BYTE bDescriptorType; // Type code of this descriptor (02h)
WORD wTotalLength; // Size of this config desc plus all interface,
// endpoint, class, and vendor descriptors
BYTE bNumInterfaces; // Number of interfaces in this config
BYTE bConfigurationValue; // Value to use in SetConfiguration command
BYTE bConfiguration; // Index of string desc describing this config
BYTE bAttributes; // See CFG_DESC_ATTR_xxx values below
BYTE bMaxPower; // Power used by this config in 2mA units
} tCONFIG_DESCRIPTOR, *ptCONFIG_DESCRIPTOR;
// interface descriptor structure
typedef struct _tINTERFACE_DESCRIPTOR
{
BYTE bLength; // Length of this descriptor (9h bytes)
BYTE bDescriptorType; // Type code of this descriptor (04h)
BYTE bInterfaceNumber; // Zero based index of interface in the configuration
BYTE bAlternateSetting; // Alternate setting number of this interface
BYTE bNumEndpoints; // Number of endpoints in this interface
BYTE bInterfaceClass; // Interface's base class code
BYTE bInterfaceSubClass; // Interface's sub class code
BYTE bInterfaceProtocol; // Interface's protocol type code
BYTE bInterface; // Index of string desc describing this interface
} tINTERFACE_DESCRIPTOR, *ptINTERFACE_DESCRIPTOR;
// endpoint descriptor structure
typedef struct _tENDPOINT_DESCRIPTOR
{
BYTE bLength; // Length of this descriptor (7h bytes)
BYTE bDescriptorType; // Type code of this descriptor (05h)
BYTE bEndpointAddress; // See EP_DESC_ADDR_xxx values below
BYTE bAttributes; // See EP_DESC_ATTR_xxx value below
WORD wMaxPacketSize; // Max packet size of endpoint
BYTE bInterval; // Polling interval of endpoint in milliseconds
} tENDPOINT_DESCRIPTOR, *tpENDPOINT_DESCRIPTOR;
/*----------------------------------------------------------------------------+
| Constant Definition |
+----------------------------------------------------------------------------*/
#define USB_SPEC_REV_BCD 0x0101 /*BCD coded rev level of USB spec*/
#define SIZEOF_DEVICE_REQUEST 0x08
// Bit definitions for DEVICE_REQUEST.bmRequestType
// Bit 7: Data direction
#define USB_REQ_TYPE_OUTPUT 0x00 // 0 = Host sending data to device
#define USB_REQ_TYPE_INPUT 0x80 // 1 = Device sending data to host
// Bit 6-5: Type
#define USB_REQ_TYPE_MASK 0x60 // Mask value for bits 6-5
#define USB_REQ_TYPE_STANDARD 0x00 // 00 = Standard USB request
#define USB_REQ_TYPE_CLASS 0x20 // 01 = Class specific
#define USB_REQ_TYPE_VENDOR 0x40 // 10 = Vendor specific
// Bit 4-0: Recipient
#define USB_REQ_TYPE_RECIP_MASK 0x1F // Mask value for bits 4-0
#define USB_REQ_TYPE_DEVICE 0x00 // 00000 = Device
#define USB_REQ_TYPE_INTERFACE 0x01 // 00001 = Interface
#define USB_REQ_TYPE_ENDPOINT 0x02 // 00010 = Endpoint
#define USB_REQ_TYPE_OTHER 0x03 // 00011 = Other
// Values for DEVICE_REQUEST.bRequest
// Standard Device Requests
#define USB_REQ_GET_STATUS 0
#define USB_REQ_CLEAR_FEATURE 1
#define USB_REQ_SET_FEATURE 3
#define USB_REQ_SET_ADDRESS 5
#define USB_REQ_GET_DESCRIPTOR 6
#define USB_REQ_SET_DESCRIPTOR 7
#define USB_REQ_GET_CONFIGURATION 8
#define USB_REQ_SET_CONFIGURATION 9
#define USB_REQ_GET_INTERFACE 10
#define USB_REQ_SET_INTERFACE 11
#define USB_REQ_SYNCH_FRAME 12
// HID CLASS Requests
#define USB_REQ_GET_REPORT 0x01
#define USB_REQ_GET_IDLE 0x02
#define USB_REQ_SET_REPORT 0x09
#define USB_REQ_SET_IDLE 0x0A
#define USB_REQ_SET_PROTOCOL 0x0B
#define USB_REQ_GET_PROTOCOL 0x03
// Descriptor Type Values
#define DESC_TYPE_DEVICE 1 // Device Descriptor (Type 1)
#define DESC_TYPE_CONFIG 2 // Configuration Descriptor (Type 2)
#define DESC_TYPE_STRING 3 // String Descriptor (Type 3)
#define DESC_TYPE_INTERFACE 4 // Interface Descriptor (Type 4)
#define DESC_TYPE_ENDPOINT 5 // Endpoint Descriptor (Type 5)
#define DESC_TYPE_HID 0x21 // HID Descriptor (Type 0x21)
#define DESC_TYPE_REPORT 0x22 // Report Descriptor (Type 0x22)
#define DESC_TYPE_PHYSICAL 0x23 // Physical Descriptor (Type 0x23)
#define DESC_TYPE_HUB 0x29 // Hub Descriptor (Type 6)
// Feature Selector Values
#define FEATURE_REMOTE_WAKEUP 1 // Remote wakeup (Type 1)
#define FEATURE_ENDPOINT_STALL 0 // Endpoint stall (Type 0)
// Device Status Values
#define DEVICE_STATUS_REMOTE_WAKEUP 0x02
#define DEVICE_STATUS_SELF_POWER 0x01
// DEVICE_DESCRIPTOR structure
#define SIZEOF_DEVICE_DESCRIPTOR 0x12
#define OFFSET_DEVICE_DESCRIPTOR_VID_L 0x08
#define OFFSET_DEVICE_DESCRIPTOR_VID_H 0x09
#define OFFSET_DEVICE_DESCRIPTOR_PID_L 0x0A
#define OFFSET_DEVICE_DESCRIPTOR_PID_H 0x0B
#define OFFSET_DEVICE_DESCRIPTOR_VER_L 0x0C
#define OFFSET_DEVICE_DESCRIPTOR_VER_H 0x0D
#define OFFSET_CONFIG_DESCRIPTOR_POWER 0x07
#define OFFSET_CONFIG_DESCRIPTOR_CURT 0x08
#define OFFSET_DEVICE_DESCRIPTOR_IMFG 0x0E
#define OFFSET_DEVICE_DESCRIPTOR_IPROD 0x0F
#define OFFSET_DEVICE_DESCRIPTOR_ISN 0x10
// CONFIG_DESCRIPTOR structure
#define SIZEOF_CONFIG_DESCRIPTOR 0x09
// Bit definitions for CONFIG_DESCRIPTOR.bmAttributes
#define CFG_DESC_ATTR_SELF_POWERED 0x40 // Bit 6: If set, device is self powered
#define CFG_DESC_ATTR_BUS_POWERED 0x80 // Bit 7: If set, device is bus powered
#define CFG_DESC_ATTR_REMOTE_WAKE 0x20 // Bit 5: If set, device supports remote wakeup
// INTERFACE_DESCRIPTOR structure
#define SIZEOF_INTERFACE_DESCRIPTOR 0x09
// KEYBOARD HID DESCRIPTOR structure
#define SIZEOF_KEYBD_HID_DESCRIPTOR 0x09
// ENDPOINT_DESCRIPTOR structure
#define SIZEOF_ENDPOINT_DESCRIPTOR 0x07
#define SIZEOF_REPORT_DESCRIPTOR 0x3F
// Bit definitions for EndpointDescriptor.EndpointAddr
#define EP_DESC_ADDR_EP_NUM 0x0F // Bit 3-0: Endpoint number
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