internal unsafe CyUSBEndPoint(IntPtr h, USB_ENDPOINT_DESCRIPTOR *EndPtDescriptor, USB_SUPERSPEED_ENDPOINT_COMPANION_DESCRIPTOR *SSEndPtDescriptor)
{
_hDevice = h;
if (EndPtDescriptor != (USB_ENDPOINT_DESCRIPTOR *)0)
{
int pkts = (EndPtDescriptor->wMaxPacketSize & 0x1800) >> 11;
pkts++;
_dscLen = EndPtDescriptor->bLength;
_dscType = EndPtDescriptor->bDescriptorType;
_address = EndPtDescriptor->bEndpointAddress;
_attributes = EndPtDescriptor->bmAttributes;
_maxPktSize = (EndPtDescriptor->wMaxPacketSize & 0x7ff) * pkts;
_interval = EndPtDescriptor->bInterval;
_bIn = (Address & 0x80) > 0;
}
if (SSEndPtDescriptor != (USB_SUPERSPEED_ENDPOINT_COMPANION_DESCRIPTOR *)0)
{
_ssdscLen = SSEndPtDescriptor->bLength;
_ssdscType = SSEndPtDescriptor->bDescriptorType;
_ssmaxburst = SSEndPtDescriptor->bMaxBurst;
_maxPktSize *= (_ssmaxburst + 1); // Multiply the Maxpacket size with Max burst
_ssbmAttribute = SSEndPtDescriptor->bmAttributes;
if ((_attributes & 0x03) == 1) // MULT is valid for Isochronous transfer only
{
_maxPktSize *= ((SSEndPtDescriptor->bmAttributes & 0x03) + 1); // Adding the MULT fields.
}
_ssbytesperinterval = SSEndPtDescriptor->bBytesPerInterval;
}
}
unsafe internal CyIsocEndPoint(IntPtr h, USB_ENDPOINT_DESCRIPTOR *EndPtDescriptor, USB_SUPERSPEED_ENDPOINT_COMPANION_DESCRIPTOR *SSEndPtDescriptor) : base(h, EndPtDescriptor, SSEndPtDescriptor)
{
}
unsafe internal CyUSBInterface(IntPtr handle, byte *DescrData, CyControlEndPoint ctlEndPt, byte usb30dummy)
{
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++)
{
bool bSSDec = false;
USB_ENDPOINT_DESCRIPTOR *endPtDesc = (USB_ENDPOINT_DESCRIPTOR *)desc;
desc += endPtDesc->bLength;
USB_SUPERSPEED_ENDPOINT_COMPANION_DESCRIPTOR *ssendPtDesc = (USB_SUPERSPEED_ENDPOINT_COMPANION_DESCRIPTOR *)desc;
_wTotalLength += endPtDesc->bLength;
if (ssendPtDesc != null)
{
bSSDec = (ssendPtDesc->bDescriptorType == CyConst.USB_SUPERSPEED_ENDPOINT_COMPANION);
}
if ((endPtDesc->bDescriptorType == CyConst.USB_ENDPOINT_DESCRIPTOR_TYPE) && bSSDec)
{
switch (endPtDesc->bmAttributes)
{
case 0:
EndPoints[i] = ctlEndPt;
break;
case 1:
EndPoints[i] = new CyIsocEndPoint(handle, endPtDesc, ssendPtDesc);
break;
case 2:
EndPoints[i] = new CyBulkEndPoint(handle, endPtDesc, ssendPtDesc);
break;
case 3:
EndPoints[i] = new CyInterruptEndPoint(handle, endPtDesc, ssendPtDesc);
break;
}
_wTotalLength += ssendPtDesc->bLength;
desc += ssendPtDesc->bLength;
}
else 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;
}
}
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--;
}
}
}
}
