/* LUFA Library Copyright (C) Dean Camera, 2009. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ /* Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, 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. */ #include "ConfigDescriptor.h" uint8_t USB_Host_GetDeviceConfigDescriptor(uint16_t* const ConfigSizePtr, void* BufferPtr) { uint8_t ErrorCode; USB_HostRequest = (USB_Host_Request_Header_t) { bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE), bRequest: REQ_GetDescriptor, wValue: (DTYPE_Configuration << 8), wIndex: 0, wLength: sizeof(USB_Descriptor_Configuration_Header_t), }; if (BufferPtr == NULL) { uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)]; ErrorCode = USB_Host_SendControlRequest(ConfigHeader); #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES) *ConfigSizePtr = DESCRIPTOR_CAST(ConfigHeader, USB_Descriptor_Configuration_Header_t).TotalConfigurationSize; #else *ConfigSizePtr = DESCRIPTOR_CAST(ConfigHeader, USB_Descriptor_Configuration_Header_t).wTotalLength; #endif } else { USB_HostRequest.wLength = *ConfigSizePtr; ErrorCode = USB_Host_SendControlRequest(BufferPtr); } return ErrorCode; } void USB_Host_GetNextDescriptorOfType(uint16_t* const BytesRem, uint8_t** const CurrConfigLoc, const uint8_t Type) { while (*BytesRem) { USB_Host_GetNextDescriptor(BytesRem, CurrConfigLoc); if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type) return; } } void USB_Host_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem, uint8_t** const CurrConfigLoc, const uint8_t Type, const uint8_t BeforeType) { while (*BytesRem) { USB_Host_GetNextDescriptor(BytesRem, CurrConfigLoc); if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type) { return; } else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType) { *BytesRem = 0; return; } } } void USB_Host_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem, uint8_t** const CurrConfigLoc, const uint8_t Type, const uint8_t AfterType) { USB_Host_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, AfterType); if (*BytesRem) USB_Host_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type); } uint8_t USB_Host_GetNextDescriptorComp_P(uint16_t* BytesRem, uint8_t** CurrConfigLoc, uint8_t (* const ComparatorRoutine)(void*)) { uint8_t ErrorCode; while (*BytesRem) { uint8_t** PrevDescLoc = CurrConfigLoc; uint16_t PrevBytesRem = *BytesRem; USB_Host_GetNextDescriptor(BytesRem, CurrConfigLoc); if ((ErrorCode = ComparatorRoutine(*CurrConfigLoc)) != Descriptor_Search_NotFound) { CurrConfigLoc = PrevDescLoc; *BytesRem = PrevBytesRem; return ErrorCode; } } return Descriptor_Search_Comp_EndOfDescriptor; }