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Diffstat (limited to 'LUFA/Drivers/USB/Core/StdDescriptors.h')
-rw-r--r-- | LUFA/Drivers/USB/Core/StdDescriptors.h | 669 |
1 files changed, 669 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/StdDescriptors.h b/LUFA/Drivers/USB/Core/StdDescriptors.h new file mode 100644 index 000000000..ed4ecf91e --- /dev/null +++ b/LUFA/Drivers/USB/Core/StdDescriptors.h @@ -0,0 +1,669 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * \brief USB standard descriptor definitions. + * + * This file contains structures and macros for the easy creation of standard USB descriptors in USB device projects. + * + * \note This file should not be included directly. It is automatically included as needed by the USB driver + * dispatch header located in LUFA/Drivers/USB/USB.h. + */ + +/** \ingroup Group_USB + * \defgroup Group_Descriptors USB Descriptors + * + * Standard USB device descriptor defines and retrieval routines, for USB devices. This module contains + * structures and macros for the easy creation of standard USB descriptors in USB device projects. + * + * @{ + */ + +#ifndef __USBDESCRIPTORS_H__ +#define __USBDESCRIPTORS_H__ + + /* Includes: */ + #include "../../../Common/Common.h" + #include "USBMode.h" + #include "Events.h" + + #if defined(USB_CAN_BE_DEVICE) + #include "Device.h" + #endif + + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Preprocessor Checks: */ + #if !defined(__INCLUDE_FROM_USB_DRIVER) + #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead. + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** Indicates that a given descriptor does not exist in the device. This can be used inside descriptors + * for string descriptor indexes, or may be use as a return value for GetDescriptor when the specified + * descriptor does not exist. + */ + #define NO_DESCRIPTOR 0 + + /** Macro to calculate the power value for the configuration descriptor, from a given number of milliamperes. */ + #define USB_CONFIG_POWER_MA(mA) ((mA) >> 1) + + /** Macro to calculate the Unicode length of a string with a given number of Unicode characters. + * Should be used in string descriptor's headers for giving the string descriptor's byte length. + */ + #define USB_STRING_LEN(str) (sizeof(USB_Descriptor_Header_t) + ((str) << 1)) + + /** Macro to encode a given four digit floating point version number (e.g. 01.23) into Binary Coded + * Decimal format for descriptor fields requiring BCD encoding, such as the USB version number in the + * standard device descriptor. + */ + #define VERSION_BCD(x) ((((VERSION_TENS(x) << 4) | VERSION_ONES(x)) << 8) | \ + ((VERSION_TENTHS(x) << 4) | VERSION_HUNDREDTHS(x))) + + /** String language ID for the English language. Should be used in \ref USB_Descriptor_String_t descriptors + * to indicate that the English language is supported by the device in its string descriptors. + */ + #define LANGUAGE_ID_ENG 0x0409 + + /** \name Endpoint Address Direction Masks */ + //@{ + /** Can be masked with an endpoint address for a \ref USB_Descriptor_Endpoint_t endpoint descriptor's + * EndpointAddress value to indicate to the host that the endpoint is of the IN direction (i.e, from + * device to host). + */ + #define ENDPOINT_DESCRIPTOR_DIR_IN 0x80 + + /** Can be masked with an endpoint address for a \ref USB_Descriptor_Endpoint_t endpoint descriptor's + * EndpointAddress value to indicate to the host that the endpoint is of the OUT direction (i.e, from + * host to device). + */ + #define ENDPOINT_DESCRIPTOR_DIR_OUT 0x00 + //@} + + /** \name USB Configuration Descriptor Attribute Masks */ + //@{ + /** Can be masked with other configuration descriptor attributes for a \ref USB_Descriptor_Configuration_Header_t + * descriptor's ConfigAttributes value to indicate that the specified configuration can draw its power + * from the host's VBUS line. + */ + #define USB_CONFIG_ATTR_BUSPOWERED 0x80 + + /** Can be masked with other configuration descriptor attributes for a \ref USB_Descriptor_Configuration_Header_t + * descriptor's ConfigAttributes value to indicate that the specified configuration can draw its power + * from the device's own power source. + */ + #define USB_CONFIG_ATTR_SELFPOWERED 0x40 + + /** Can be masked with other configuration descriptor attributes for a \ref USB_Descriptor_Configuration_Header_t + * descriptor's ConfigAttributes value to indicate that the specified configuration supports the + * remote wakeup feature of the USB standard, allowing a suspended USB device to wake up the host upon + * request. + */ + #define USB_CONFIG_ATTR_REMOTEWAKEUP 0x20 + //@} + + /** \name Endpoint Descriptor Attribute Masks */ + //@{ + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is not synchronized. + * + * \see The USB specification for more details on the possible Endpoint attributes. + */ + #define ENDPOINT_ATTR_NO_SYNC (0 << 2) + + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is asynchronous. + * + * \see The USB specification for more details on the possible Endpoint attributes. + */ + #define ENDPOINT_ATTR_ASYNC (1 << 2) + + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is adaptive. + * + * \see The USB specification for more details on the possible Endpoint attributes. + */ + #define ENDPOINT_ATTR_ADAPTIVE (2 << 2) + + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is synchronized. + * + * \see The USB specification for more details on the possible Endpoint attributes. + */ + #define ENDPOINT_ATTR_SYNC (3 << 2) + //@} + + /** \name Endpoint Descriptor Usage Masks */ + //@{ + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is used for data transfers. + * + * \see The USB specification for more details on the possible Endpoint usage attributes. + */ + #define ENDPOINT_USAGE_DATA (0 << 4) + + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is used for feedback. + * + * \see The USB specification for more details on the possible Endpoint usage attributes. + */ + #define ENDPOINT_USAGE_FEEDBACK (1 << 4) + + /** Can be masked with other endpoint descriptor attributes for a \ref USB_Descriptor_Endpoint_t descriptor's + * Attributes value to indicate that the specified endpoint is used for implicit feedback. + * + * \see The USB specification for more details on the possible Endpoint usage attributes. + */ + #define ENDPOINT_USAGE_IMPLICIT_FEEDBACK (2 << 4) + //@} + + /* Enums: */ + /** Enum for the possible standard descriptor types, as given in each descriptor's header. */ + enum USB_DescriptorTypes_t + { + DTYPE_Device = 0x01, /**< Indicates that the descriptor is a device descriptor. */ + DTYPE_Configuration = 0x02, /**< Indicates that the descriptor is a configuration descriptor. */ + DTYPE_String = 0x03, /**< Indicates that the descriptor is a string descriptor. */ + DTYPE_Interface = 0x04, /**< Indicates that the descriptor is an interface descriptor. */ + DTYPE_Endpoint = 0x05, /**< Indicates that the descriptor is an endpoint descriptor. */ + DTYPE_DeviceQualifier = 0x06, /**< Indicates that the descriptor is a device qualifier descriptor. */ + DTYPE_Other = 0x07, /**< Indicates that the descriptor is of other type. */ + DTYPE_InterfacePower = 0x08, /**< Indicates that the descriptor is an interface power descriptor. */ + DTYPE_InterfaceAssociation = 0x0B, /**< Indicates that the descriptor is an interface association descriptor. */ + DTYPE_CSInterface = 0x24, /**< Indicates that the descriptor is a class specific interface descriptor. */ + DTYPE_CSEndpoint = 0x25, /**< Indicates that the descriptor is a class specific endpoint descriptor. */ + }; + + /** Enum for possible Class, Subclass and Protocol values of device and interface descriptors. */ + enum USB_Descriptor_ClassSubclassProtocol_t + { + USB_CSCP_NoDeviceClass = 0x00, /**< Descriptor Class value indicating that the device does not belong + * to a particular class at the device level. + */ + USB_CSCP_NoDeviceSubclass = 0x00, /**< Descriptor Subclass value indicating that the device does not belong + * to a particular subclass at the device level. + */ + USB_CSCP_NoDeviceProtocol = 0x00, /**< Descriptor Protocol value indicating that the device does not belong + * to a particular protocol at the device level. + */ + USB_CSCP_VendorSpecificClass = 0xFF, /**< Descriptor Class value indicating that the device/interface belongs + * to a vendor specific class. + */ + USB_CSCP_VendorSpecificSubclass = 0xFF, /**< Descriptor Subclass value indicating that the device/interface belongs + * to a vendor specific subclass. + */ + USB_CSCP_VendorSpecificProtocol = 0xFF, /**< Descriptor Protocol value indicating that the device/interface belongs + * to a vendor specific protocol. + */ + USB_CSCP_IADDeviceClass = 0xEF, /**< Descriptor Class value indicating that the device belongs to the + * Interface Association Descriptor class. + */ + USB_CSCP_IADDeviceSubclass = 0x02, /**< Descriptor Subclass value indicating that the device belongs to the + * Interface Association Descriptor subclass. + */ + USB_CSCP_IADDeviceProtocol = 0x01, /**< Descriptor Protocol value indicating that the device belongs to the + * Interface Association Descriptor protocol. + */ + }; + + /* Type Defines: */ + /** \brief Standard USB Descriptor Header (LUFA naming conventions). + * + * Type define for all descriptors' standard header, indicating the descriptor's length and type. This structure + * uses LUFA-specific element names to make each element's purpose clearer. + * + * \see \ref USB_StdDescriptor_Header_t for the version of this type with standard element names. + */ + typedef struct + { + uint8_t Size; /**< Size of the descriptor, in bytes. */ + uint8_t Type; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + } USB_Descriptor_Header_t; + + /** \brief Standard USB Descriptor Header (USB-IF naming conventions). + * + * Type define for all descriptors' standard header, indicating the descriptor's length and type. This structure + * uses the relevant standard's given element names to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_Header_t for the version of this type with non-standard LUFA specific element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + } USB_StdDescriptor_Header_t; + + /** \brief Standard USB Device Descriptor (LUFA naming conventions). + * + * Type define for a standard Device Descriptor. This structure uses LUFA-specific element names to make each + * element's purpose clearer. + * + * \see \ref USB_StdDescriptor_Device_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + uint16_t USBSpecification; /**< BCD of the supported USB specification. */ + uint8_t Class; /**< USB device class. */ + uint8_t SubClass; /**< USB device subclass. */ + uint8_t Protocol; /**< USB device protocol. */ + + uint8_t Endpoint0Size; /**< Size of the control (address 0) endpoint's bank in bytes. */ + + uint16_t VendorID; /**< Vendor ID for the USB product. */ + uint16_t ProductID; /**< Unique product ID for the USB product. */ + uint16_t ReleaseNumber; /**< Product release (version) number. */ + + uint8_t ManufacturerStrIndex; /**< String index for the manufacturer's name. The + * host will request this string via a separate + * control request for the string descriptor. + * + * \note If no string supplied, use \ref NO_DESCRIPTOR. + */ + uint8_t ProductStrIndex; /**< String index for the product name/details. + * + * \see ManufacturerStrIndex structure entry. + */ + uint8_t SerialNumStrIndex; /**< String index for the product's globally unique hexadecimal + * serial number, in uppercase Unicode ASCII. + * + * \note On some AVR models, there is an embedded serial number + * in the chip which can be used for the device serial number. + * To use this serial number, set this to USE_INTERNAL_SERIAL. + * On unsupported devices, this will evaluate to 0 and will cause + * the host to generate a pseudo-unique value for the device upon + * insertion. + * + * \see ManufacturerStrIndex structure entry. + */ + uint8_t NumberOfConfigurations; /**< Total number of configurations supported by + * the device. + */ + } USB_Descriptor_Device_t; + + /** \brief Standard USB Device Descriptor (USB-IF naming conventions). + * + * Type define for a standard Device Descriptor. This structure uses the relevant standard's given element names + * to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_Device_t for the version of this type with non-standard LUFA specific element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + uint16_t bcdUSB; /**< BCD of the supported USB specification. */ + uint8_t bDeviceClass; /**< USB device class. */ + uint8_t bDeviceSubClass; /**< USB device subclass. */ + uint8_t bDeviceProtocol; /**< USB device protocol. */ + uint8_t bMaxPacketSize0; /**< Size of the control (address 0) endpoint's bank in bytes. */ + uint16_t idVendor; /**< Vendor ID for the USB product. */ + uint16_t idProduct; /**< Unique product ID for the USB product. */ + uint16_t bcdDevice; /**< Product release (version) number. */ + uint8_t iManufacturer; /**< String index for the manufacturer's name. The + * host will request this string via a separate + * control request for the string descriptor. + * + * \note If no string supplied, use \ref NO_DESCRIPTOR. + */ + uint8_t iProduct; /**< String index for the product name/details. + * + * \see ManufacturerStrIndex structure entry. + */ + uint8_t iSerialNumber; /**< String index for the product's globally unique hexadecimal + * serial number, in uppercase Unicode ASCII. + * + * \note On some AVR models, there is an embedded serial number + * in the chip which can be used for the device serial number. + * To use this serial number, set this to USE_INTERNAL_SERIAL. + * On unsupported devices, this will evaluate to 0 and will cause + * the host to generate a pseudo-unique value for the device upon + * insertion. + * + * \see ManufacturerStrIndex structure entry. + */ + uint8_t bNumConfigurations; /**< Total number of configurations supported by + * the device. + */ + } USB_StdDescriptor_Device_t; + + /** \brief Standard USB Configuration Descriptor (LUFA naming conventions). + * + * Type define for a standard Configuration Descriptor header. This structure uses LUFA-specific element names + * to make each element's purpose clearer. + * + * \see \ref USB_StdDescriptor_Configuration_Header_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + uint16_t TotalConfigurationSize; /**< Size of the configuration descriptor header, + * and all sub descriptors inside the configuration. + */ + uint8_t TotalInterfaces; /**< Total number of interfaces in the configuration. */ + + uint8_t ConfigurationNumber; /**< Configuration index of the current configuration. */ + uint8_t ConfigurationStrIndex; /**< Index of a string descriptor describing the configuration. */ + + uint8_t ConfigAttributes; /**< Configuration attributes, comprised of a mask of zero or + * more USB_CONFIG_ATTR_* masks. + */ + + uint8_t MaxPowerConsumption; /**< Maximum power consumption of the device while in the + * current configuration, calculated by the \ref USB_CONFIG_POWER_MA() + * macro. + */ + } USB_Descriptor_Configuration_Header_t; + + /** \brief Standard USB Configuration Descriptor (USB-IF naming conventions). + * + * Type define for a standard Configuration Descriptor header. This structure uses the relevant standard's given element names + * to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_Device_t for the version of this type with non-standard LUFA specific element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + uint16_t wTotalLength; /**< Size of the configuration descriptor header, + * and all sub descriptors inside the configuration. + */ + uint8_t bNumInterfaces; /**< Total number of interfaces in the configuration. */ + uint8_t bConfigurationValue; /**< Configuration index of the current configuration. */ + uint8_t iConfiguration; /**< Index of a string descriptor describing the configuration. */ + uint8_t bmAttributes; /**< Configuration attributes, comprised of a mask of zero or + * more USB_CONFIG_ATTR_* masks. + */ + uint8_t bMaxPower; /**< Maximum power consumption of the device while in the + * current configuration, calculated by the \ref USB_CONFIG_POWER_MA() + * macro. + */ + } USB_StdDescriptor_Configuration_Header_t; + + /** \brief Standard USB Interface Descriptor (LUFA naming conventions). + * + * Type define for a standard Interface Descriptor. This structure uses LUFA-specific element names + * to make each element's purpose clearer. + * + * \see \ref USB_StdDescriptor_Interface_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + uint8_t InterfaceNumber; /**< Index of the interface in the current configuration. */ + uint8_t AlternateSetting; /**< Alternate setting for the interface number. The same + * interface number can have multiple alternate settings + * with different endpoint configurations, which can be + * selected by the host. + */ + uint8_t TotalEndpoints; /**< Total number of endpoints in the interface. */ + + uint8_t Class; /**< Interface class ID. */ + uint8_t SubClass; /**< Interface subclass ID. */ + uint8_t Protocol; /**< Interface protocol ID. */ + + uint8_t InterfaceStrIndex; /**< Index of the string descriptor describing the interface. */ + } USB_Descriptor_Interface_t; + + /** \brief Standard USB Interface Descriptor (USB-IF naming conventions). + * + * Type define for a standard Interface Descriptor. This structure uses the relevant standard's given element names + * to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_Interface_t for the version of this type with non-standard LUFA specific element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + uint8_t bInterfaceNumber; /**< Index of the interface in the current configuration. */ + uint8_t bAlternateSetting; /**< Alternate setting for the interface number. The same + * interface number can have multiple alternate settings + * with different endpoint configurations, which can be + * selected by the host. + */ + uint8_t bNumEndpoints; /**< Total number of endpoints in the interface. */ + uint8_t bInterfaceClass; /**< Interface class ID. */ + uint8_t bInterfaceSubClass; /**< Interface subclass ID. */ + uint8_t bInterfaceProtocol; /**< Interface protocol ID. */ + uint8_t iInterface; /**< Index of the string descriptor describing the + * interface. + */ + } USB_StdDescriptor_Interface_t; + + /** \brief Standard USB Interface Association Descriptor (LUFA naming conventions). + * + * Type define for a standard Interface Association Descriptor. This structure uses LUFA-specific element names + * to make each element's purpose clearer. + * + * This descriptor has been added as a supplement to the USB2.0 standard, in the ECN located at + * <a>http://www.usb.org/developers/docs/InterfaceAssociationDescriptor_ecn.pdf</a>. It allows composite + * devices with multiple interfaces related to the same function to have the multiple interfaces bound + * together at the point of enumeration, loading one generic driver for all the interfaces in the single + * function. Read the ECN for more information. + * + * \see \ref USB_StdDescriptor_Interface_Association_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + uint8_t FirstInterfaceIndex; /**< Index of the first associated interface. */ + uint8_t TotalInterfaces; /**< Total number of associated interfaces. */ + + uint8_t Class; /**< Interface class ID. */ + uint8_t SubClass; /**< Interface subclass ID. */ + uint8_t Protocol; /**< Interface protocol ID. */ + + uint8_t IADStrIndex; /**< Index of the string descriptor describing the + * interface association. + */ + } USB_Descriptor_Interface_Association_t; + + /** \brief Standard USB Interface Association Descriptor (USB-IF naming conventions). + * + * Type define for a standard Interface Association Descriptor. This structure uses the relevant standard's given + * element names to ensure compatibility with the standard. + * + * This descriptor has been added as a supplement to the USB2.0 standard, in the ECN located at + * <a>http://www.usb.org/developers/docs/InterfaceAssociationDescriptor_ecn.pdf</a>. It allows composite + * devices with multiple interfaces related to the same function to have the multiple interfaces bound + * together at the point of enumeration, loading one generic driver for all the interfaces in the single + * function. Read the ECN for more information. + * + * \see \ref USB_Descriptor_Interface_Association_t for the version of this type with non-standard LUFA specific + * element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value + * given by the specific class. + */ + uint8_t bFirstInterface; /**< Index of the first associated interface. */ + uint8_t bInterfaceCount; /**< Total number of associated interfaces. */ + uint8_t bFunctionClass; /**< Interface class ID. */ + uint8_t bFunctionSubClass; /**< Interface subclass ID. */ + uint8_t bFunctionProtocol; /**< Interface protocol ID. */ + uint8_t iFunction; /**< Index of the string descriptor describing the + * interface association. + */ + } USB_StdDescriptor_Interface_Association_t; + + /** \brief Standard USB Endpoint Descriptor (LUFA naming conventions). + * + * Type define for a standard Endpoint Descriptor. This structure uses LUFA-specific element names + * to make each element's purpose clearer. + * + * \see \ref USB_StdDescriptor_Endpoint_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + uint8_t EndpointAddress; /**< Logical address of the endpoint within the device for the current + * configuration, including direction mask. + */ + uint8_t Attributes; /**< Endpoint attributes, comprised of a mask of the endpoint type (EP_TYPE_*) + * and attributes (ENDPOINT_ATTR_*) masks. + */ + uint16_t EndpointSize; /**< Size of the endpoint bank, in bytes. This indicates the maximum packet + * size that the endpoint can receive at a time. + */ + uint8_t PollingIntervalMS; /**< Polling interval in milliseconds for the endpoint if it is an INTERRUPT + * or ISOCHRONOUS type. + */ + } USB_Descriptor_Endpoint_t; + + /** \brief Standard USB Endpoint Descriptor (USB-IF naming conventions). + * + * Type define for a standard Endpoint Descriptor. This structure uses the relevant standard's given + * element names to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_Endpoint_t for the version of this type with non-standard LUFA specific + * element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a + * value given by the specific class. + */ + uint8_t bEndpointAddress; /**< Logical address of the endpoint within the device for the current + * configuration, including direction mask. + */ + uint8_t bmAttributes; /**< Endpoint attributes, comprised of a mask of the endpoint type (EP_TYPE_*) + * and attributes (ENDPOINT_ATTR_*) masks. + */ + uint16_t wMaxPacketSize; /**< Size of the endpoint bank, in bytes. This indicates the maximum packet size + * that the endpoint can receive at a time. + */ + uint8_t bInterval; /**< Polling interval in milliseconds for the endpoint if it is an INTERRUPT or + * ISOCHRONOUS type. + */ + } USB_StdDescriptor_Endpoint_t; + + /** \brief Standard USB String Descriptor (LUFA naming conventions). + * + * Type define for a standard string descriptor. Unlike other standard descriptors, the length + * of the descriptor for placement in the descriptor header must be determined by the \ref USB_STRING_LEN() + * macro rather than by the size of the descriptor structure, as the length is not fixed. + * + * This structure should also be used for string index 0, which contains the supported language IDs for + * the device as an array. + * + * This structure uses LUFA-specific element names to make each element's purpose clearer. + * + * \see \ref USB_StdDescriptor_String_t for the version of this type with standard element names. + */ + typedef struct + { + USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */ + + wchar_t UnicodeString[]; /**< String data, as unicode characters (alternatively, + * string language IDs). If normal ASCII characters are + * to be used, they must be added as an array of characters + * rather than a normal C string so that they are widened to + * Unicode size. + * + * Under GCC, strings prefixed with the "L" character (before + * the opening string quotation mark) are considered to be + * Unicode strings, and may be used instead of an explicit + * array of ASCII characters. + */ + } USB_Descriptor_String_t; + + /** \brief Standard USB String Descriptor (USB-IF naming conventions). + * + * Type define for a standard string descriptor. Unlike other standard descriptors, the length + * of the descriptor for placement in the descriptor header must be determined by the \ref USB_STRING_LEN() + * macro rather than by the size of the descriptor structure, as the length is not fixed. + * + * This structure should also be used for string index 0, which contains the supported language IDs for + * the device as an array. + * + * This structure uses the relevant standard's given element names to ensure compatibility with the standard. + * + * \see \ref USB_Descriptor_String_t for the version of this type with with non-standard LUFA specific + * element names. + */ + typedef struct + { + uint8_t bLength; /**< Size of the descriptor, in bytes. */ + uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t + * or a value given by the specific class. + */ + int16_t bString[]; /**< String data, as unicode characters (alternatively, string language IDs). + * If normal ASCII characters are to be used, they must be added as an array + * of characters rather than a normal C string so that they are widened to + * Unicode size. + * + * Under GCC, strings prefixed with the "L" character (before the opening string + * quotation mark) are considered to be Unicode strings, and may be used instead + * of an explicit array of ASCII characters. + */ + } USB_StdDescriptor_String_t; + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* Macros: */ + #define VERSION_TENS(x) (int)((x) / 10) + #define VERSION_ONES(x) (int)((x) - (10 * VERSION_TENS(x))) + #define VERSION_TENTHS(x) (int)(((x) - (int)(x)) * 10) + #define VERSION_HUNDREDTHS(x) (int)((((x) - (int)(x)) * 100) - (10 * VERSION_TENTHS(x))) + #endif + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + |