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Fixed HID report parser collection paths invalid due to misplaced semicolon in the free path item search loop. Increased the default number of collection paths allowable by the parser.

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This commit is contained in:
Dean Camera 2009-11-04 07:14:38 +00:00
parent ba8ffa4cb7
commit 4670b39070
4 changed files with 11 additions and 35 deletions
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42
LUFA/Drivers/USB/Class/Host/HIDParser.c
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@ -42,16 +42,12 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
uint16_t UsageStack[HID_USAGE_STACK_DEPTH];
uint8_t UsageStackSize = 0;
ParserData->TotalReportItems = 0;
ParserData->TotalDeviceReports = 1;
ParserData->UsingReportIDs = false;
for (uint8_t CurrCollection = 0; CurrCollection < HID_MAX_COLLECTIONS; CurrCollection++)
ParserData->CollectionPaths[CurrCollection].Parent = NULL;
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;
@ -177,7 +173,7 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
CurrCollectionPath = &ParserData->CollectionPaths[1];
while (CurrCollectionPath->Parent != NULL);
while (CurrCollectionPath->Parent != NULL)
{
if (CurrCollectionPath == &ParserData->CollectionPaths[HID_MAX_COLLECTIONS - 1])
return HID_PARSE_InsufficientCollectionPaths;
@ -200,10 +196,6 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
UsageStackSize--;
}
else
{
CurrCollectionPath->Usage.Usage = 0;
}
break;
case (TYPE_MAIN | TAG_MAIN_ENDCOLLECTION):
@ -211,7 +203,6 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
return HID_PARSE_UnexpectedEndCollection;
CurrCollectionPath = CurrCollectionPath->Parent;
break;
case (TYPE_MAIN | TAG_MAIN_INPUT):
case (TYPE_MAIN | TAG_MAIN_OUTPUT):
@ -237,39 +228,26 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
UsageStackSize--;
}
else
{
NewReportItem.Attributes.Usage.Usage = 0;
}
uint8_t ReportSizeIndex = 0;
switch (HIDReportItem & TAG_MASK)
{
case TAG_MAIN_INPUT:
NewReportItem.ItemType = REPORT_ITEM_TYPE_In;
NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_In];
ReportSizeIndex = REPORT_ITEM_TYPE_In;
break;
case TAG_MAIN_OUTPUT:
NewReportItem.ItemType = REPORT_ITEM_TYPE_Out;
NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Out];
ReportSizeIndex = REPORT_ITEM_TYPE_Out;
break;
case TAG_MAIN_FEATURE:
NewReportItem.ItemType = REPORT_ITEM_TYPE_Feature;
NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Feature];
ReportSizeIndex = REPORT_ITEM_TYPE_Feature;
break;
}
CurrReportIDInfo->ReportSizeBits[ReportSizeIndex] += CurrStateTable->Attributes.BitSize;
NewReportItem.BitOffset = CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType];
if (ParserData->LargestReportSizeBits < CurrReportIDInfo->ReportSizeBits[ReportSizeIndex])
ParserData->LargestReportSizeBits = CurrReportIDInfo->ReportSizeBits[ReportSizeIndex];
CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType] += CurrStateTable->Attributes.BitSize;
if (ParserData->LargestReportSizeBits < NewReportItem.BitOffset)
ParserData->LargestReportSizeBits = NewReportItem.BitOffset;
if (!(ReportItemData & IOF_CONSTANT) && CALLBACK_HIDParser_FilterHIDReportItem(&NewReportItem))
{
@ -283,8 +261,6 @@ uint8_t USB_ProcessHIDReport(const uint8_t* ReportData, uint16_t ReportSize, HID
}
}
UsageStackSize = 0;
break;
}