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 & HID_RI_DATA_SIZE_MASK)
{
case HID_RI_DATA_BITS_32:
ReportItemData = le32_to_cpu(*((uint32_t*)ReportData));
ReportSize -= 4;
ReportData += 4;
break;
case HID_RI_DATA_BITS_16:
ReportItemData = le16_to_cpu(*((uint16_t*)ReportData));
ReportSize -= 2;
ReportData += 2;
break;
case HID_RI_DATA_BITS_8:
ReportItemData = *((uint8_t*)ReportData);
ReportSize -= 1;
ReportData += 1;
break;
}
switch (HIDReportItem & (HID_RI_TYPE_MASK | HID_RI_TAG_MASK))
{
case HID_RI_PUSH(0):
if (CurrStateTable == &StateTable[HID_STATETABLE_STACK_DEPTH - 1])
return HID_PARSE_HIDStackOverflow;
memcpy((CurrStateTable + 1),
CurrStateTable,
sizeof(HID_ReportItem_t));
CurrStateTable++;
break;
case HID_RI_POP(0):
if (CurrStateTable == &StateTable[0])
return HID_PARSE_HIDStackUnderflow;
CurrStateTable--;
break;
case HID_RI_USAGE_PAGE(0):
if ((HIDReportItem & HID_RI_DATA_SIZE_MASK) == HID_RI_DATA_BITS_32)
CurrStateTable->Attributes.Usage.Page = (ReportItemData >> 16);
CurrStateTable->Attributes.Usage.Page = ReportItemData;
break;
case HID_RI_LOGICAL_MINIMUM(0):
CurrStateTable->Attributes.Logical.Minimum = ReportItemData;
break;
case HID_RI_LOGICAL_MAXIMUM(0):
CurrStateTable->Attributes.Logical.Maximum = ReportItemData;
break;
case HID_RI_PHYSICAL_MINIMUM(0):
CurrStateTable->Attributes.Physical.Minimum = ReportItemData;
break;
case HID_RI_PHYSICAL_MAXIMUM(0):
CurrStateTable->Attributes.Physical.Maximum = ReportItemData;
break;
case HID_RI_UNIT_EXPONENT(0):
CurrStateTable->Attributes.Unit.Exponent = ReportItemData;
break;
case HID_RI_UNIT(0):
CurrStateTable->Attributes.Unit.Type = ReportItemData;
break;
case HID_RI_REPORT_SIZE(0):
CurrStateTable->Attributes.BitSize = ReportItemData;
break;
case HID_RI_REPORT_COUNT(0):
CurrStateTable->ReportCount = ReportItemData;
break;
case HID_RI_REPORT_ID(0):
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 HID_RI_USAGE(0):
if (UsageListSize == HID_USAGE_STACK_DEPTH)
return HID_PARSE_UsageListOverflow;
UsageList[UsageListSize++] = ReportItemData;
break;
case HID_RI_USAGE_MINIMUM(0):
UsageMinMax.Minimum = ReportItemData;
break;
case HID_RI_USAGE_MAXIMUM(0):
UsageMinMax.Maximum = ReportItemData;
break;
case HID_RI_COLLECTION(0):
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 HID_RI_END_COLLECTION(0):
if (CurrCollectionPath == NULL)
return HID_PARSE_UnexpectedEndCollection;
CurrCollectionPath = CurrCollectionPath->Parent;
break;
case HID_RI_INPUT(0):
case HID_RI_OUTPUT(0):
case HID_RI_FEATURE(0):
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 ItemTypeTag = (HIDReportItem & (HID_RI_TYPE_MASK | HID_RI_TAG_MASK));
if (ItemTypeTag == HID_RI_INPUT(0))
NewReportItem.ItemType = HID_REPORT_ITEM_In;
else if (ItemTypeTag == HID_RI_OUTPUT(0))
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;
ParserData->LargestReportSizeBits = MAX(ParserData->LargestReportSizeBits, CurrReportIDInfo->ReportSizeBits[NewReportItem.ItemType]);
if (ParserData->TotalReportItems == HID_MAX_REPORTITEMS)
return HID_PARSE_InsufficientReportItems;
memcpy(&ParserData->ReportItems[ParserData->TotalReportItems],
&NewReportItem, sizeof(HID_ReportItem_t));
if (!(ReportItemData & HID_IOF_CONSTANT) && CALLBACK_HIDParser_FilterHIDReportItem(&NewReportItem))
ParserData->TotalReportItems++;
}
break;
}
if ((HIDReportItem & HID_RI_TYPE_MASK) == HID_RI_TYPE_MAIN)
{
UsageMinMax.Minimum = 0;
UsageMinMax.Maximum = 0;
UsageListSize = 0;
}
}
if (!(ParserData->TotalReportItems))
return HID_PARSE_NoUnfilteredReportItems;
return HID_PARSE_Successful;
}
};
#define GENERIC_REPORT_SIZE 16
#define GENERIC_IN_EPADDR (ENDPOINT_DIR_IN | 1)
#define GENERIC_EPSIZE 8
const USB_Descriptor_HIDReport_Datatype_t PROGMEM GenericReport[] = {
HID_RI_USAGE_PAGE(16, 0xFF00), /* Vendor Page 0 */
HID_RI_USAGE(8, 0x01), /* Vendor Usage 1 */
HID_RI_COLLECTION(8, 0x01), /* Vendor Usage 1 */
HID_RI_USAGE(8, 0x00), /* Undefined */
HID_RI_LOGICAL_MINIMUM(8, 0x00),
HID_RI_LOGICAL_MAXIMUM(8, 0xFF),
HID_RI_REPORT_SIZE(8, 0x08),
HID_RI_REPORT_COUNT(8, GENERIC_REPORT_SIZE),
HID_RI_FEATURE(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_RI_END_COLLECTION(0),
};
const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor = {
.Config =
{
.Header = {
.Size = sizeof(USB_Descriptor_Configuration_Header_t),
.Type = DTYPE_Configuration
},
.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
.TotalInterfaces = 1,
.ConfigurationNumber = 1,