-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-#include "ConfigDescriptor.h"\r
-\r
-#if defined(USB_CAN_BE_HOST)\r
-uint8_t USB_GetDeviceConfigDescriptor(uint16_t* const ConfigSizePtr, void* BufferPtr)\r
-{\r
- uint8_t ErrorCode;\r
-\r
- USB_ControlRequest = (USB_Request_Header_t)\r
- {\r
- .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),\r
- .bRequest = REQ_GetDescriptor,\r
- .wValue = (DTYPE_Configuration << 8),\r
- .wIndex = 0,\r
- .wLength = sizeof(USB_Descriptor_Configuration_Header_t),\r
- };\r
- \r
- Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
-\r
- if (BufferPtr == NULL)\r
- {\r
- uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)];\r
-\r
- ErrorCode = USB_Host_SendControlRequest(ConfigHeader);\r
-\r
- #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)\r
- *ConfigSizePtr = DESCRIPTOR_CAST(ConfigHeader, USB_Descriptor_Configuration_Header_t).TotalConfigurationSize;\r
- #else\r
- *ConfigSizePtr = DESCRIPTOR_CAST(ConfigHeader, USB_Descriptor_Configuration_Header_t).wTotalLength; \r
- #endif\r
- }\r
- else\r
- {\r
- USB_ControlRequest.wLength = *ConfigSizePtr;\r
- \r
- ErrorCode = USB_Host_SendControlRequest(BufferPtr); \r
- }\r
-\r
- return ErrorCode;\r
-}\r
-#endif\r
-\r
-void USB_GetNextDescriptorOfType(uint16_t* const BytesRem,\r
- uint8_t** const CurrConfigLoc,\r
- const uint8_t Type)\r
-{\r
- while (*BytesRem)\r
- {\r
- USB_GetNextDescriptor(BytesRem, CurrConfigLoc); \r
-\r
- if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)\r
- return;\r
- }\r
-}\r
-\r
-void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem,\r
- uint8_t** const CurrConfigLoc,\r
- const uint8_t Type,\r
- const uint8_t BeforeType)\r
-{\r
- while (*BytesRem)\r
- {\r
- USB_GetNextDescriptor(BytesRem, CurrConfigLoc);\r
-\r
- if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type)\r
- {\r
- return;\r
- }\r
- else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType)\r
- {\r
- *BytesRem = 0;\r
- return;\r
- }\r
- }\r
-}\r
-\r
-void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,\r
- uint8_t** const CurrConfigLoc,\r
- const uint8_t Type,\r
- const uint8_t AfterType)\r
-{\r
- USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, AfterType);\r
- \r
- if (*BytesRem)\r
- USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type);\r
-}\r
- \r
-uint8_t USB_GetNextDescriptorComp(uint16_t* BytesRem, uint8_t** CurrConfigLoc, ConfigComparatorPtr_t ComparatorRoutine)\r
-{\r
- uint8_t ErrorCode;\r
- \r
- while (*BytesRem)\r
- {\r
- uint8_t* PrevDescLoc = *CurrConfigLoc;\r
- uint16_t PrevBytesRem = *BytesRem;\r
-\r
- USB_GetNextDescriptor(BytesRem, CurrConfigLoc);\r
-\r
- if ((ErrorCode = ComparatorRoutine(*CurrConfigLoc)) != DESCRIPTOR_SEARCH_NotFound)\r
- {\r
- if (ErrorCode == DESCRIPTOR_SEARCH_Fail)\r
- {\r
- *CurrConfigLoc = PrevDescLoc;\r
- *BytesRem = PrevBytesRem;\r
- }\r
- \r
- return ErrorCode;\r
- }\r
- }\r
- \r
- return DESCRIPTOR_SEARCH_COMP_EndOfDescriptor;\r
-}\r