public unsafe bool PreReadAsysnchonous()
{
cBufs = new byte[CyConst.SINGLE_XFER_LEN + IsoPktBlockSize + ((InEndpoint.XferMode == XMODE.BUFFERED) ? BufSz : 0)];
xBufs = new byte[BufSz];
oLaps = new byte[20];
pktsInfo = new ISO_PKT_INFO[PPX];
fixed(byte *tL0 = oLaps, tc0 = cBufs, tb0 = xBufs)
{
OVERLAPPED *ovLapStatus = (OVERLAPPED *)tL0;
ovLapStatus->hEvent = (IntPtr)PInvoke.CreateEvent(0, 0, 0, 0);
// Pre-load the queue with a request
int len = BufSz;
if (InEndpoint.BeginDataXfer(ref cBufs, ref xBufs, ref len, ref oLaps) == false)
{
LogHelper.GetLogger <USB>().Debug("Begin data xfer failure");
}
if (!InEndpoint.WaitForXfer(ovLapStatus->hEvent, 500))
{
InEndpoint.Abort();
PInvoke.WaitForSingleObject(ovLapStatus->hEvent, 500);
}
}
return(true);
}
public void ReadAsysnchonous()
{
if (InEndpoint.Attributes == 1)
{
CyIsocEndPoint isoc = InEndpoint as CyIsocEndPoint;
// FinishDataXfer
if (isoc.FinishDataXfer(ref cBufs, ref xBufs, ref BufSz, ref oLaps, ref pktsInfo))
{
LogHelper.GetLogger <USB>().Debug("isoc finish data xfer: ");
}
else
{
if (InEndpoint.FinishDataXfer(ref cBufs, ref xBufs, ref BufSz, ref oLaps))
{
LogHelper.GetLogger <USB>().Debug("finish data xfer: ");
}
}
}
}
