void SetEndPoints()
{
if (_configs == 0) return;
if (_interfaces == 0) return;
EndPoints = USBCfgs[_cfgNum].Interfaces[_intfcIndex].EndPoints;
int eptCount = EndPointCount;
IsocInEndPt = null;
IsocOutEndPt = null;
BulkInEndPt = null;
BulkOutEndPt = null;
InterruptInEndPt = null;
InterruptOutEndPt = null;
for (int i = 1; i < eptCount; i++)
{
bool bIn = (EndPoints[i].Address & 0x80) > 0;
byte attrib = EndPoints[i].Attributes;
if (EndPoints[i] != null) EndPoints[i].XferMode = XMODE.DIRECT;
if ((IsocInEndPt == null) && (attrib == 1) && bIn) IsocInEndPt = EndPoints[i] as CyIsocEndPoint;
if ((BulkInEndPt == null) && (attrib == 2) && bIn) BulkInEndPt = EndPoints[i] as CyBulkEndPoint;
if ((InterruptInEndPt == null) && (attrib == 3) && bIn) InterruptInEndPt = EndPoints[i] as CyInterruptEndPoint;
if ((IsocOutEndPt == null) && (attrib == 1) && !bIn) IsocOutEndPt = EndPoints[i] as CyIsocEndPoint;
if ((BulkOutEndPt == null) && (attrib == 2) && !bIn) BulkOutEndPt = EndPoints[i] as CyBulkEndPoint;
if ((InterruptOutEndPt == null) && (attrib == 3) && !bIn) InterruptOutEndPt = EndPoints[i] as CyInterruptEndPoint;
}
}
ushort _wTotalLength; // Needed in case Intfc has additional (non-endpt) descriptors
#endregion Fields
#region Constructors
internal unsafe CyUSBInterface(IntPtr handle, byte* DescrData, CyControlEndPoint ctlEndPt)
{
USB_INTERFACE_DESCRIPTOR* pIntfcDescriptor = (USB_INTERFACE_DESCRIPTOR*)DescrData;
_bLength = pIntfcDescriptor->bLength;
_bDescriptorType = pIntfcDescriptor->bDescriptorType;
_bInterfaceNumber = pIntfcDescriptor->bInterfaceNumber;
_bAlternateSetting = pIntfcDescriptor->bAlternateSetting;
_bNumEndpoints = pIntfcDescriptor->bNumEndpoints;
_bInterfaceClass = pIntfcDescriptor->bInterfaceClass;
_bInterfaceSubClass = pIntfcDescriptor->bInterfaceSubClass;
_bInterfaceProtocol = pIntfcDescriptor->bInterfaceProtocol;
_iInterface = pIntfcDescriptor->iInterface;
_bAltSettings = 0;
_wTotalLength = bLength;
byte* desc = (byte*)(DescrData + pIntfcDescriptor->bLength);
int i;
int unexpected = 0;
EndPoints = new CyUSBEndPoint[bNumEndpoints + 1];
EndPoints[0] = ctlEndPt;
for (i = 1; i <= bNumEndpoints; i++)
{
USB_ENDPOINT_DESCRIPTOR* endPtDesc = (USB_ENDPOINT_DESCRIPTOR*)desc;
_wTotalLength += endPtDesc->bLength;
if (endPtDesc->bDescriptorType == CyConst.USB_ENDPOINT_DESCRIPTOR_TYPE)
{
switch (endPtDesc->bmAttributes)
{
case 0:
EndPoints[i] = ctlEndPt;
break;
case 1:
EndPoints[i] = new CyIsocEndPoint(handle, endPtDesc);
break;
case 2:
EndPoints[i] = new CyBulkEndPoint(handle, endPtDesc);
break;
case 3:
EndPoints[i] = new CyInterruptEndPoint(handle, endPtDesc);
break;
}
desc += endPtDesc->bLength;
}
else
{
unexpected++;
if (unexpected < 12)
{ // Sanity check - prevent infinite loop
// This may have been a class-specific descriptor (like HID). Skip it.
desc += endPtDesc->bLength;
// Stay in the loop, grabbing the next descriptor
i--;
}
}
}
}