Refactor and improve HID report item parsing

USG_1.0
Robert Fisk 8 years ago
parent 0e42cf71dd
commit 42d6030e7b

@ -32,7 +32,7 @@
//Stuff for parsing HID descriptors:
#define HID_ITEM_LONG 0xFE
#define HID_ITEM_LONG 0xFC
#define HID_ITEM_MASK 0xFC
#define HID_ITEM_LENGTH_MASK 0x03

@ -93,7 +93,7 @@ static HAL_StatusTypeDef Downstream_HID_Mouse_ParseReportDescriptor(void)
(ReportYBitLength == 0) ||
(ReportWheelBitLength == 0)))
{
switch (ItemHeader & HID_ITEM_MASK)
switch (ItemHeader)
{
case HID_ITEM_USAGE_PAGE:
currentUsagePage = ItemData;
@ -239,8 +239,14 @@ static HAL_StatusTypeDef Downstream_HID_GetNextReportItem(void)
return HAL_ERROR;
}
ItemHeader = *ReportDataPointer++;
itemLength = ItemHeader & HID_ITEM_LENGTH_MASK;
ItemHeader = *ReportDataPointer & HID_ITEM_MASK;
itemLength = *ReportDataPointer & HID_ITEM_LENGTH_MASK;
ReportDataPointer++;
if (itemLength == 3)
{
itemLength = 4; //Length = 3 actually means 4 bytes
}
if (ItemHeader == HID_ITEM_LONG)
{

Loading…
Cancel
Save