private async void GetInputThreadFunction()
{
int count = 0;
double accXVal, accYVal, accZVal;
double velXVal = 0, velYVal = 0, velZVal = 0;
Vector x_shift = new Vector(-1, 0);
//int time = 0;
Action onReadTimeoutAction = OnReadTimeout; // Create a delegate to execute on a timeout.
var cts = new CancellationTokenSource(); // The CancellationTokenSource specifies the timeout value and the action to take on a timeout.
cts.Token.Register(onReadTimeoutAction); // Specify the function to call on a timeout.
PointCollection points = new PointCollection();
bool zcDetect = true;
int oldCount = 0;
int packetCounterVal;
int lostPacketCount = 0;
int prevPacketCounter = 0;
double lossPercentage = 0;
double prevLossPercentage = 0;;
while (true)
{
try
{
if (_deviceHandleObtained && (inputReportBuf != null))
{
cts.CancelAfter(60 * 1000); // Cancel the read if it hasn't completed after a timeout.
// Stops waiting when data is available or on timeout:
Int32 bytesRead = await _myHid.GetInputReportViaInterruptTransfer(_deviceData, inputReportBuf, cts);
if (bytesRead > 0)
{
ErrorBox.Dispatcher.Invoke(() => { ErrorBox.Text = "bytes read (includes report ID) = " + Convert.ToString(bytesRead); });
//for (int i = 0; i < inputReportBuffer.Length; i++)
// InfoBox.Text += inputReportBuffer[i].ToString() + " ";
packetCounterVal = inputReportBuf[1] + inputReportBuf[2] * 256;
if (0 != prevPacketCounter)
{
if (packetCounterVal != (prevPacketCounter + 1))
{
lostPacketCount += (packetCounterVal - (prevPacketCounter + 1));
}
}
prevPacketCounter = packetCounterVal;
//ValueTextBlock.Dispatcher.Invoke(() => { ValueTextBlock.Text = ((sbyte)inputReportBuf[3]).ToString(); });
//AccValProgressBar.Dispatcher.Invoke(() => { AccValProgressBar.Value = (double)((sbyte)inputReportBuf[3]); });
totalInputReports++;
accXVal = (double)((sbyte)inputReportBuf[3]);
accYVal = (double)((sbyte)inputReportBuf[4]);
accZVal = (double)((sbyte)(inputReportBuf[5] - 64));
velXVal += accXVal * 0.0327 * 15.31 / 2.0;
velYVal += accYVal * 0.0327 * 15.31 / 2.0;
velZVal += accZVal * 0.0327 * 15.31 / 2.0;
if (accXVal > accXMax)
{
accXMax = accXVal;
}
if (accXVal < accXMin)
{
accXMin = accXVal;
}
if (accXVal > 0)
{
zcDetect = true;
}
if ((accXVal < 0) && (zcDetect == true))
{
if ((oldCount > 0) && (inputReportFrequency > 0))
{
accXCount++;
accXFreq = (double)inputReportFrequency / (double)(totalInputReports - oldCount);
AccXFreqText.Dispatcher.Invoke(() =>
{
AccXFreqText.Text = string.Format("{0}", (int)(accXFreq * 60));
AccXCountText.Text = string.Format("{0}", accXCount);
});
}
oldCount = totalInputReports;
zcDetect = false;
}
count++;
AccXPolyline.Dispatcher.Invoke(() =>
{
if (count >= 200)
{
accXPoints.RemoveAt(0);
//velXPoints.RemoveAt(0);
accYPoints.RemoveAt(0);
//velYPoints.RemoveAt(0);
accZPoints.RemoveAt(0);
//velZPoints.RemoveAt(0);
for (int i = 0; i < accXPoints.Count; i++)
{
accXPoints[i] += x_shift;
// velXPoints[i] += x_shift;
accYPoints[i] += x_shift;
// velYPoints[i] += x_shift;
accZPoints[i] += x_shift;
// velZPoints[i] += x_shift;
}
accXPoints.Add(new Point(200, 150 + accXVal));
// velXPoints.Add(new Point(200, 150 + velXVal));
accYPoints.Add(new Point(200, 150 + accYVal));
// velYPoints.Add(new Point(200, 150 + velYVal));
accZPoints.Add(new Point(200, 150 + accZVal));
// velZPoints.Add(new Point(200, 150 + velZVal));
}
else
{
accXPoints.Add(new Point(count, 150 + accXVal));
// velXPoints.Add(new Point(count * 4, 150 + velXVal));
accYPoints.Add(new Point(count, 150 + accYVal));
// velYPoints.Add(new Point(count * 4, 150 + velYVal));
accZPoints.Add(new Point(count, 150 + accZVal));
// velZPoints.Add(new Point(count * 4, 150 + velZVal));
}
});
CountTextBlock.Dispatcher.Invoke(() =>
{
if (totalInputReports > 0)
{
lossPercentage = (double)(lostPacketCount) * 100 / totalInputReports;
}
CountTextBlock.Text = totalInputReports.ToString();
LossTextBlock.Text = string.Format("{0:0.0}%", lossPercentage);
LossTextBlock.Foreground = (lossPercentage > prevLossPercentage) ? Brushes.Red : Brushes.Green;
prevLossPercentage = lossPercentage;
});
}
}
}
catch (Exception ex)
{
DisplayException(Name, ex);
}
}
}