From 0c0436f47c296513dace43d3ba20e3cc36f8f527 Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 25 Mar 2012 17:46:26 +0200 Subject: Board, rev A. --- firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c | 361 +++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c (limited to 'firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c') diff --git a/firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c b/firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c new file mode 100644 index 0000000..f0e7db8 --- /dev/null +++ b/firmware/LUFA/Drivers/USB/Class/Host/HIDParser.c @@ -0,0 +1,361 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2010 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. +*/ + +#define __INCLUDE_FROM_USB_DRIVER +#include "../../HighLevel/USBMode.h" +#if defined(USB_CAN_BE_HOST) + +#define __INCLUDE_FROM_HID_DRIVER +#include "HIDParser.h" + +uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, + uint16_t ReportSize, + HID_ReportInfo_t* const ParserData) +{ + HID_StateTable_t StateTable[HID_STATETABLE_STACK_DEPTH]; + HID_StateTable_t* CurrStateTable = &StateTable[0]; + HID_CollectionPath_t* CurrCollectionPath = NULL; + HID_ReportSizeInfo_t* CurrReportIDInfo = &ParserData->ReportIDSizes[0]; + uint16_t UsageList[HID_USAGE_STACK_DEPTH]; + uint8_t UsageListSize = 0; + HID_MinMax_t UsageMinMax = {0, 0}; + + memset(ParserData, 0x00, sizeof(HID_ReportInfo_t)); + memset(CurrStateTable, 0x00, sizeof(HID_StateTable_t)); + memset(CurrReportIDInfo, 0x00, sizeof(HID_ReportSizeInfo_t)); + + ParserData->TotalDeviceReports = 1; + + while (ReportSize) + { + uint8_t HIDReportItem = *ReportData; + uint32_t ReportItemData = 0; + + ReportData++; + ReportSize--; + + switch (HIDReportItem & DATA_SIZE_MASK) + { + case DATA_SIZE_4: + ReportItemData = *((uint32_t*)ReportData); + ReportSize -= 4; + ReportData += 4; + break; + case DATA_SIZE_2: + ReportItemData = *((uint16_t*)ReportData); + ReportSize -= 2; + ReportData += 2; + break; + case DATA_SIZE_1: + ReportItemData = *((uint8_t*)ReportData); + ReportSize -= 1; + ReportData += 1; + break; + } + + switch (HIDReportItem & (TYPE_MASK | TAG_MASK)) + { + case (TYPE_GLOBAL | TAG_GLOBAL_PUSH): + if (CurrStateTable == &StateTable[HID_STATETABLE_STACK_DEPTH - 1]) + return HID_PARSE_HIDStackOverflow; + + memcpy((CurrStateTable + 1), + CurrStateTable, + sizeof(HID_ReportItem_t)); + + CurrStateTable++; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_POP): + if (CurrStateTable == &StateTable[0]) + return HID_PARSE_HIDStackUnderflow; + + CurrStateTable--; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_USAGEPAGE): + CurrStateTable->Attributes.Usage.Page = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_LOGICALMIN): + CurrStateTable->Attributes.Logical.Minimum = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_LOGICALMAX): + CurrStateTable->Attributes.Logical.Maximum = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_PHYSMIN): + CurrStateTable->Attributes.Physical.Minimum = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_PHYSMAX): + CurrStateTable->Attributes.Physical.Maximum = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_UNITEXP): + CurrStateTable->Attributes.Unit.Exponent = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_UNIT): + CurrStateTable->Attributes.Unit.Type = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_REPORTSIZE): + CurrStateTable->Attributes.BitSize = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_REPORTCOUNT): + CurrStateTable->ReportCount = ReportItemData; + break; + case (TYPE_GLOBAL | TAG_GLOBAL_REPORTID): + CurrStateTable->ReportID = ReportItemData; + + if (ParserData->UsingReportIDs) + { + CurrReportIDInfo = NULL; + + for (uint8_t i = 0; i < ParserData->TotalDeviceReports; i++) + { + if (ParserData->ReportIDSizes[i].ReportID == CurrStateTable->ReportID) + { + CurrReportIDInfo = &ParserData->ReportIDSizes[i]; + break; + } + } + + if (CurrReportIDInfo == NULL) + { + if (ParserData->TotalDeviceReports == HID_MAX_REPORT_IDS) + return HID_PARSE_InsufficientReportIDItems; + + CurrReportIDInfo = &ParserData->ReportIDSizes[ParserData->TotalDeviceReports++]; + memset(CurrReportIDInfo, 0x00, sizeof(HID_ReportSizeInfo_t)); + } + } + + ParserData->UsingReportIDs = true; + + CurrReportIDInfo->ReportID = CurrStateTable->ReportID; + break; + case (TYPE_LOCAL | TAG_LOCAL_USAGE): + if (UsageListSize == HID_USAGE_STACK_DEPTH) + return HID_PARSE_UsageListOverflow; + + UsageList[UsageListSize++] = ReportItemData; + break; + case (TYPE_LOCAL | TAG_LOCAL_USAGEMIN): + UsageMinMax.Minimum = ReportItemData; + break; + case (TYPE_LOCAL | TAG_LOCAL_USAGEMAX): + UsageMinMax.Maximum = ReportItemData; + break; + case (TYPE_MAIN | TAG_MAIN_COLLECTION): + if (CurrCollectionPath == NULL) + { + CurrCollectionPath = &ParserData->CollectionPaths[0]; + } + else + { + HID_CollectionPath_t* ParentCollectionPath = CurrCollectionPath; + + CurrCollectionPath = &ParserData->CollectionPaths[1]; + + while (CurrCollectionPath->Parent != NULL) + { + if (CurrCollectionPath == &ParserData->CollectionPaths[HID_MAX_COLLECTIONS - 1]) + return HID_PARSE_InsufficientCollectionPaths; + + CurrCollectionPath++; + } + + CurrCollectionPath->Parent = ParentCollectionPath; + } + + CurrCollectionPath->Type = ReportItemData; + CurrCollectionPath->Usage.Page = CurrStateTable->Attributes.Usage.Page; + + if (UsageListSize) + { + CurrCollectionPath->Usage.Usage = UsageList[0]; + + for (uint8_t i = 0; i < UsageListSize; i++) + UsageList[i] = UsageList[i + 1]; + + UsageListSize--; + } + else if (UsageMinMax.Minimum <= UsageMinMax.Maximum) + { + CurrCollectionPath->Usage.Usage = UsageMinMax.Minimum++; + } + + break; + case (TYPE_MAIN | TAG_MAIN_ENDCOLLECTION): + if (CurrCollectionPath == NULL) + return HID_PARSE_UnexpectedEndCollection; + + CurrCollectionPath = CurrCollectionPath->Parent; + break; + case (TYPE_MAIN | TAG_MAIN_INPUT): + case (TYPE_MAIN | TAG_MAIN_OUTPUT): + case (TYPE_MAIN | TAG_MAIN_FEATURE): + for (uint8_t ReportItemNum = 0; ReportItemNum < CurrStateTable->ReportCount; ReportItemNum++) + { + HID_ReportItem_t NewReportItem; + + memcpy(&NewReportItem.Attributes, + &CurrStateTable->Attributes, + sizeof(HID_ReportItem_Attributes_t)); + + NewReportItem.ItemFlags = ReportItemData; + NewReportItem.CollectionPath = CurrCollectionPath; + NewReportItem.ReportID = CurrStateTable->ReportID; + + if (UsageListSize) + { + NewReportItem.Attributes.Usage.Usage = UsageList[0]; + + for (uint8_t i = 0; i < UsageListSize; i++) + UsageList[i] = UsageList[i + 1]; + + UsageListSize--; + } + else if (UsageMinMax.Minimum <= UsageMinMax.Maximum) + { + NewReportItem.Attributes.Usage.Usage = UsageMinMax.Minimum++; + } + + uint8_t ItemTag = (HIDReportItem & TAG_MASK); + + if (ItemTag == TAG_MAIN_INPUT) + NewReportItem.ItemType = HID_REPORT_ITEM_In; + else if (ItemTag == TAG_MAIN_OUTPUT) + NewReportItem.ItemType = HID_REPORT_ITEM_Out; + else + NewReportItem.ItemType = HID_REPORT_ITEM_Feature; + + NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType]; + + CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType] += CurrStateTable->Attributes.BitSize; + + if (ParserData->LargestReportSizeBits < NewReportItem.BitOffset) + ParserData->LargestReportSizeBits = NewReportItem.BitOffset; + + if (!(ReportItemData & IOF_CONSTANT) && CALLBACK_HIDParser_FilterHIDReportItem(&NewReportItem)) + { + if (ParserData->TotalReportItems == HID_MAX_REPORTITEMS) + return HID_PARSE_InsufficientReportItems; + + memcpy(&ParserData->ReportItems[ParserData->TotalReportItems], + &NewReportItem, sizeof(HID_ReportItem_t)); + + ParserData->TotalReportItems++; + } + } + + break; + } + + if ((HIDReportItem & TYPE_MASK) == TYPE_MAIN) + { + UsageMinMax.Minimum = 0; + UsageMinMax.Maximum = 0; + UsageListSize = 0; + } + } + + if (!(ParserData->TotalReportItems)) + return HID_PARSE_NoUnfilteredReportItems; + + return HID_PARSE_Successful; +} + +bool USB_GetHIDReportItemInfo(const uint8_t* ReportData, + HID_ReportItem_t* const ReportItem) +{ + uint16_t DataBitsRem = ReportItem->Attributes.BitSize; + uint16_t CurrentBit = ReportItem->BitOffset; + uint32_t BitMask = (1 << 0); + + if (ReportItem->ReportID) + { + if (ReportItem->ReportID != ReportData[0]) + return false; + + ReportData++; + } + + ReportItem->PreviousValue = ReportItem->Value; + ReportItem->Value = 0; + + while (DataBitsRem--) + { + if (ReportData[CurrentBit / 8] & (1 << (CurrentBit % 8))) + ReportItem->Value |= BitMask; + + CurrentBit++; + BitMask <<= 1; + } + + return true; +} + +void USB_SetHIDReportItemInfo(uint8_t* ReportData, + HID_ReportItem_t* const ReportItem) +{ + uint16_t DataBitsRem = ReportItem->Attributes.BitSize; + uint16_t CurrentBit = ReportItem->BitOffset; + uint32_t BitMask = (1 << 0); + + if (ReportItem->ReportID) + { + ReportData[0] = ReportItem->ReportID; + ReportData++; + } + + ReportItem->PreviousValue = ReportItem->Value; + + while (DataBitsRem--) + { + if (ReportItem->Value & (1 << (CurrentBit % 8))) + ReportData[CurrentBit / 8] |= BitMask; + + CurrentBit++; + BitMask <<= 1; + } +} + +uint16_t USB_GetHIDReportSize(HID_ReportInfo_t* const ParserData, + const uint8_t ReportID, + const uint8_t ReportType) +{ + for (uint8_t i = 0; i < HID_MAX_REPORT_IDS; i++) + { + uint16_t ReportSizeBits = ParserData->ReportIDSizes[i].ReportSizeBits[ReportType]; + + if (ParserData->ReportIDSizes[i].ReportID == ReportID) + return ((ReportSizeBits >> 3) + ((ReportSizeBits & 0x07) ? 1 : 0)); + } + + return 0; +} + +#endif + -- cgit v1.2.3