private void button1_Click(object sender, EventArgs e)
{
try
{
if (stopped)
{
if (driver == null)
{
driver = new DTControl(1000, new int[] { 0, 1 }, new DTControl.Logger(MessageLog), new DTControl.DoneSignalHandler(SignalsDone));
}
driver.AnalogStart();
button1.Text = "STOP";
stopped = false;
}
else
{
driver.AnalogStop();
//button1.Text = "Get";
stopped = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Communicate(int aConn, ref NetworkStream ns)
{
request = new BinaryReader(ns);
response = new BinaryWriter(ns);
m_hasConnection[aConn] = true;
try
{
while (!m_stopServer && m_hasConnection[aConn])
{
string cmd;
string msg = "";
while (!ns.DataAvailable)
{
if (m_stopServer)
{
return;
}
Thread.Sleep(100);
}
cmd = request.ReadString();
switch (cmd)
{
case "START":
{
Log("Acquisition started");
response.Write("+ACK");
m_signals = new double[BufferSize * 2];
byte[] bufferedSignal = new byte[BufferSize * sizeof(double)];
m_device.PutDoutValue(1);
signalWriter = new StreamWriter("real_signals.txt");
stopped = false;
try
{
m_device.AnalogStart();
//wait for it to start (maybe not necessary)
while (m_device.AnalogRunning() == false)
{
}
while (m_device.AnalogRunning() && !stopped)
{
Thread.Sleep(500);
}
if (!stopped)
{
m_hasConnection[aConn] = false;
}
msg = "+OK Signals filtered.";
}
catch (Exception ex)
{
Log("Signal filtering failed: " + ex.Message);
}
break;
}
case "STOP":
response.Write("+ACK");
m_device.PutDoutValue(3);
if (m_device.AnalogRunning())
{
m_device.AnalogStop();
}
response.Write("DONE");
break;
case "CLOSE":
msg = "Connection Closed.";
m_hasConnection[aConn] = false;
break;
case "COEF":
msg = "+ACK COEF";
response.Write(msg);
try
{
int length = request.ReadInt32();
byte[] buffer = request.ReadBytes(length);
BufferToDouble(buffer, m_coefficients);
}
catch (Exception ex)
{
msg = "-ERR Failed to receive coefficients. " + ex.Message;
Log(String.Format("({0}) {1}", aConn, msg));
}
msg = "+ACK coefficients received.";
response.Write(msg);
break;
case "TEST":
{
msg = "+ACK TEST command received. Filtering test signal.";
response.Write(msg);
//read test signals
StreamReader testReader = new StreamReader(@"..\..\signal.txt");
List <double> testSignals = new List <double>();
while (testReader.EndOfStream == false)
{
testSignals.Add(Double.Parse(testReader.ReadLine()));
}
Log("+OK Signals read successfully.");
byte[] bufferedSignals = new byte[BufferSize * sizeof(double)];
double[] filteredSignals;
double average, variance, min, max;
int bufferIndex = 0;
// this part is weird, because the test file is 6001 signals, but we want to send 100-length buffers
//
for (int signalIndex = 0; signalIndex < testSignals.Count; signalIndex += BufferSize) //simulate 100-length buffers
{
double[] buffer = new double[BufferSize];
// copy 100 values unless the buffer size is less than 100 (i.e. the last buffer only has 1 value)
testSignals.CopyTo(signalIndex, buffer, 0, ((testSignals.Count - signalIndex) < BufferSize) ? testSignals.Count - signalIndex : BufferSize);
if (!ProcessSignals(buffer, out filteredSignals, out average, out variance, out min, out max))
{
continue;
}
DoubleToBuffer(filteredSignals, bufferedSignals);
response.Write("BUF");
response.Write(bufferedSignals.Length);
response.Write(bufferedSignals);
DoubleToBuffer(buffer, bufferedSignals);
response.Write(bufferedSignals.Length);
response.Write(bufferedSignals);
response.Write(average);
response.Write(variance);
response.Write(min);
response.Write(max);
bufferIndex++;
}
response.Write("DONE");
msg = "+OK: Signals filtered.";
break;
}
case "INIT":
response.Write("+ACK");
if (m_device == null)
{
double frequency = request.ReadDouble();
m_device = new DTControl(frequency, new int[] { 0, 1 }, new DTControl.Logger(Log), new DTControl.DoneSignalHandler(GetBuffer));
m_device.PutDoutValue(0);
msg = "+OK DT9816 Initialized.";
}
else
{
msg = "+OK DT9816 Already initialized.";
}
break;
default:
msg = "-ERR: Command not recognized.";
response.Write(msg);
break;
}
response.Flush();
Log(String.Format("({0}) {1}", aConn, msg));
}
}
catch (Exception ex)
{
Log(String.Format("[{0} {1}] -ERR Connection {2} failed: {3}",
DateTime.Now.ToShortDateString(), DateTime.Now.ToLongTimeString(), aConn, ex.Message));
}
finally
{
ns.Close();
}
}
