From 1daa5e16f9a395fb2943906a715adb35b8106988 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sat, 19 Feb 2011 22:59:27 +0000 Subject: Initial restructuring of the core USB driver module to support multiple architectures in the future. --- LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h | 287 -------------------------- 1 file changed, 287 deletions(-) delete mode 100644 LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h (limited to 'LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h') diff --git a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h b/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h deleted file mode 100644 index d51eb3d93..000000000 --- a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h +++ /dev/null @@ -1,287 +0,0 @@ -/* - 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 Configuration descriptor parser API. - * - * This section of the library gives a friendly API which can be used in host applications to easily - * parse an attached device's configuration descriptor so that endpoint, interface and other descriptor - * data can be extracted and used as needed. - * - * \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_Descriptors - * \defgroup Group_ConfigDescriptorParser Configuration Descriptor Parser - * - * Functions, macros, variables, enums and types related to the parsing of Configuration Descriptors. - * - * @{ - */ - -#ifndef __CONFIGDESCRIPTOR_H__ -#define __CONFIGDESCRIPTOR_H__ - - /* Includes: */ - #include - - #include "../../../Common/Common.h" - #include "HostStandardReq.h" - #include "USBMode.h" - #include "StdDescriptors.h" - - /* 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: */ - /** Mask for determining the type of an endpoint from an endpoint descriptor. This should then be compared - * with the \c EP_TYPE_* masks to determine the exact type of the endpoint. - */ - #define EP_TYPE_MASK 0x03 - - /** Casts a pointer to a descriptor inside the configuration descriptor into a pointer to the given - * descriptor type. - * - * Usage Example: - * \code - * uint8_t* CurrDescriptor = &ConfigDescriptor[0]; // Pointing to the configuration header - * USB_Descriptor_Configuration_Header_t* ConfigHeaderPtr = DESCRIPTOR_PCAST(CurrDescriptor, - * USB_Descriptor_Configuration_Header_t); - * - * // Can now access elements of the configuration header struct using the -> indirection operator - * \endcode - */ - #define DESCRIPTOR_PCAST(DescriptorPtr, Type) ((Type*)(DescriptorPtr)) - - /** Casts a pointer to a descriptor inside the configuration descriptor into the given descriptor - * type (as an actual struct instance rather than a pointer to a struct). - * - * Usage Example: - * \code - * uint8_t* CurrDescriptor = &ConfigDescriptor[0]; // Pointing to the configuration header - * USB_Descriptor_Configuration_Header_t ConfigHeader = DESCRIPTOR_CAST(CurrDescriptor, - * USB_Descriptor_Configuration_Header_t); - * - * // Can now access elements of the configuration header struct using the . operator - * \endcode - */ - #define DESCRIPTOR_CAST(DescriptorPtr, Type) (*DESCRIPTOR_PCAST(DescriptorPtr, Type)) - - /** Returns the descriptor's type, expressed as the 8-bit type value in the header of the descriptor. - * This value's meaning depends on the descriptor's placement in the descriptor, but standard type - * values can be accessed in the \ref USB_DescriptorTypes_t enum. - */ - #define DESCRIPTOR_TYPE(DescriptorPtr) DESCRIPTOR_PCAST(DescriptorPtr, USB_Descriptor_Header_t)->Type - - /** Returns the descriptor's size, expressed as the 8-bit value indicating the number of bytes. */ - #define DESCRIPTOR_SIZE(DescriptorPtr) DESCRIPTOR_PCAST(DescriptorPtr, USB_Descriptor_Header_t)->Size - - /* Type Defines: */ - /** Type define for a Configuration Descriptor comparator function (function taking a pointer to an array - * of type void, returning a uint8_t value). - * - * \see \ref USB_GetNextDescriptorComp function for more details. - */ - typedef uint8_t (* ConfigComparatorPtr_t)(void*); - - /* Enums: */ - /** Enum for the possible return codes of the \ref USB_Host_GetDeviceConfigDescriptor() function. */ - enum USB_Host_GetConfigDescriptor_ErrorCodes_t - { - HOST_GETCONFIG_Successful = 0, /**< No error occurred while retrieving the configuration descriptor. */ - HOST_GETCONFIG_DeviceDisconnect = 1, /**< The attached device was disconnected while retrieving the configuration - * descriptor. - */ - HOST_GETCONFIG_PipeError = 2, /**< An error occurred in the pipe while sending the request. */ - HOST_GETCONFIG_SetupStalled = 3, /**< The attached device stalled the request to retrieve the configuration - * descriptor. - */ - HOST_GETCONFIG_SoftwareTimeOut = 4, /**< The request or data transfer timed out. */ - HOST_GETCONFIG_BuffOverflow = 5, /**< The device's configuration descriptor is too large to fit into the allocated - * buffer. - */ - HOST_GETCONFIG_InvalidData = 6, /**< The device returned invalid configuration descriptor data. */ - }; - - /** Enum for return values of a descriptor comparator function. */ - enum DSearch_Return_ErrorCodes_t - { - DESCRIPTOR_SEARCH_Found = 0, /**< Current descriptor matches comparator criteria. */ - DESCRIPTOR_SEARCH_Fail = 1, /**< No further descriptor could possibly match criteria, fail the search. */ - DESCRIPTOR_SEARCH_NotFound = 2, /**< Current descriptor does not match comparator criteria. */ - }; - - /** Enum for return values of \ref USB_GetNextDescriptorComp(). */ - enum DSearch_Comp_Return_ErrorCodes_t - { - DESCRIPTOR_SEARCH_COMP_Found = 0, /**< Configuration descriptor now points to descriptor which matches - * search criteria of the given comparator function. */ - DESCRIPTOR_SEARCH_COMP_Fail = 1, /**< Comparator function returned \ref DESCRIPTOR_SEARCH_Fail. */ - DESCRIPTOR_SEARCH_COMP_EndOfDescriptor = 2, /**< End of configuration descriptor reached before match found. */ - }; - - /* Function Prototypes: */ - /** Retrieves the configuration descriptor data from an attached device via a standard request into a buffer, - * including validity and size checking to prevent a buffer overflow. - * - * \param[in] ConfigNumber Device configuration descriptor number to fetch from the device (usually set to 1 for - * single configuration devices). - * \param[in,out] ConfigSizePtr Pointer to a location for storing the retrieved configuration descriptor size. - * \param[out] BufferPtr Pointer to the buffer for storing the configuration descriptor data. - * \param[out] BufferSize Size of the allocated buffer where the configuration descriptor is to be stored. - * - * \return A value from the \ref USB_Host_GetConfigDescriptor_ErrorCodes_t enum. - */ - uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr, void* BufferPtr, - uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3); - - /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value. - * The bytes remaining value is automatically decremented. - * - * \param[in,out] BytesRem Pointer to the number of bytes remaining of the configuration descriptor. - * \param[in,out] CurrConfigLoc Pointer to the current descriptor inside the configuration descriptor. - * \param[in] Type Descriptor type value to search for. - */ - void USB_GetNextDescriptorOfType(uint16_t* const BytesRem, - void** const CurrConfigLoc, - const uint8_t Type) - ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); - - /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value, - * which must come before a descriptor of the second given type value. If the BeforeType type - * descriptor is reached first, the number of bytes remaining to process is set to zero and the - * function exits. The bytes remaining value is automatically decremented. - * - * \param[in,out] BytesRem Pointer to the number of bytes remaining of the configuration descriptor. - * \param[in,out] CurrConfigLoc Pointer to the current descriptor inside the configuration descriptor. - * \param[in] Type Descriptor type value to search for. - * \param[in] BeforeType Descriptor type value which must not be reached before the given Type descriptor. - */ - void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem, - void** const CurrConfigLoc, - const uint8_t Type, - const uint8_t BeforeType) - ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); - - /** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value, - * which must come after a descriptor of the second given type value. The bytes remaining value is - * automatically decremented. - * - * \param[in,out] BytesRem Pointer to the number of bytes remaining of the configuration descriptor. - * \param[in,out] CurrConfigLoc Pointer to the current descriptor inside the configuration descriptor. - * \param[in] Type Descriptor type value to search for. - * \param[in] AfterType Descriptor type value which must be reached before the given Type descriptor. - */ - void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem, - void** const CurrConfigLoc, - const uint8_t Type, - const uint8_t AfterType) - ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); - - /** Searches for the next descriptor in the given configuration descriptor using a pre-made comparator - * function. The routine updates the position and remaining configuration descriptor bytes values - * automatically. If a comparator routine fails a search, the descriptor pointer is retreated back - * so that the next descriptor search invocation will start from the descriptor which first caused the - * original search to fail. This behaviour allows for one comparator to be used immediately after another - * has failed, starting the second search from the descriptor which failed the first. - * - * Comparator functions should be standard functions which accept a pointer to the header of the current - * descriptor inside the configuration descriptor which is being compared, and should return a value from - * the \ref DSearch_Return_ErrorCodes_t enum as a uint8_t value. - * - * \note This function is available in USB Host mode only. - * - * \param[in,out] BytesRem Pointer to an int storing the remaining bytes in the configuration descriptor. - * \param[in,out] CurrConfigLoc Pointer to the current position in the configuration descriptor. - * \param[in] ComparatorRoutine Name of the comparator search function to use on the configuration descriptor. - * - * \return Value of one of the members of the \ref DSearch_Comp_Return_ErrorCodes_t enum. - * - * Usage Example: - * \code - * uint8_t EndpointSearcher(void* CurrentDescriptor); // Comparator Prototype - * - * uint8_t EndpointSearcher(void* CurrentDescriptor) - * { - * if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint) - * return DESCRIPTOR_SEARCH_Found; - * else - * return DESCRIPTOR_SEARCH_NotFound; - * } - * - * //... - * // After retrieving configuration descriptor: - * if (USB_Host_GetNextDescriptorComp(&BytesRemaining, &CurrentConfigLoc, EndpointSearcher) == - * Descriptor_Search_Comp_Found) - * { - * // Do something with the endpoint descriptor - * } - * \endcode - */ - uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem, - void** const CurrConfigLoc, - ConfigComparatorPtr_t const ComparatorRoutine); - - /* Inline Functions: */ - /** Skips over the current sub-descriptor inside the configuration descriptor, so that the pointer then - points to the next sub-descriptor. The bytes remaining value is automatically decremented. - * - * \param[in,out] BytesRem Pointer to the number of bytes remaining of the configuration descriptor. - * \param[in,out] CurrConfigLoc Pointer to the current descriptor inside the configuration descriptor. - */ - static inline void USB_GetNextDescriptor(uint16_t* const BytesRem, - void** CurrConfigLoc) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); - static inline void USB_GetNextDescriptor(uint16_t* const BytesRem, - void** CurrConfigLoc) - { - uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).Size; - - *CurrConfigLoc = ((uint8_t*)*CurrConfigLoc) + CurrDescriptorSize; - *BytesRem -= CurrDescriptorSize; - } - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */ - -- cgit v1.2.3