public override void Start()
{
try {
serialPort.Open();
} catch {
hasError = true;
return;
}
byte[] buffer = new byte[EMGPacket.PACKET_SIZE];
while (running)
{
bool readOk = true;
EMGPacket packet = new EMGPacket();
for (int i = 0; i < buffer.Length && readOk; i++)
{
int val = serialPort.ReadByte();
if (val == -1)
{
running = false;
}
byte readByte = (byte)val;
if ((i == 0 && readByte != EMGPacket.SYNC0_BYTE) ||
(i == 1 && readByte != EMGPacket.SYNC1_BYTE) ||
(i == 2 && readByte != EMGPacket.VERSION_BYTE))
{
readOk = false;
}
buffer[i] = readByte;
}
if (readOk)
{
packet.Unpack(buffer);
packetQueue.Enqueue(packet);
while (packetQueue.Count > maxQueueSize)
{
EMGPacket temp;
packetQueue.TryDequeue(out temp);
}
}
}
serialPort.Close();
}
internal static List <TrainingValue> GetTrainingValues(List <EMGPacket> packets, bool enableSkip)
{
List <TrainingValue> values = new List <TrainingValue>(EMGProcessor.FFT_SAMPLE_SIZE);
int skipsRemaining = 0;
for (int i = 0; i < packets.Count / EMGProcessor.FFT_SAMPLE_SIZE; i++)
{
if (enableSkip && skipsRemaining > 0)
{
skipsRemaining--;
continue;
}
Complex[] data = new Complex[EMGProcessor.FFT_SAMPLE_SIZE];
int start = i * EMGProcessor.FFT_SAMPLE_SIZE;
int end = start + EMGProcessor.FFT_SAMPLE_SIZE;
MuscleState startMuscleState = packets[start].muscleStateHint;
for (int j = start; j < end; j++)
{
EMGPacket packet = packets[j];
if (packet.muscleStateHint != startMuscleState)
{
skipsRemaining += EMGProcessor.SKIPS_AFTER_TRANSITION;
break;
}
data[j - start] = new Complex(EMGProcessor.ValueFromPacket(packet), 0);
}
if (enableSkip && skipsRemaining > 0)
{
continue;
}
FourierTransform.FFT(data, FourierTransform.Direction.Forward);
List <Complex> fftResults = new List <Complex>(data);
TrainingValue trainingValue = new TrainingValue((int)packets[start].muscleStateHint, EMGProcessor.FEATURE_COUNT);
EMGProcessor.FillTrainingValue(ref trainingValue, fftResults);
values.Add(trainingValue);
}
return(values);
}
public override void Start()
{
byte[] buffer = new byte[EMGPacket.PACKET_SIZE_W_HINT];
while (running)
{
EMGPacket packet = new EMGPacket();
bool readOk = true;
for (int i = 0; i < buffer.Length; i++)
{
int val = GetNextByte();
if (val == -1)
{
running = false;
readOk = false;
}
byte readByte = (byte)val;
buffer[i] = readByte;
}
if (readOk)
{
if (emulateSerialDelay)
{
Thread.Sleep(2);
}
packet.Unpack(buffer);
packetQueue.Enqueue(packet);
}
while (maxQueueSize != -1 && packetQueue.Count > maxQueueSize)
{
EMGPacket temp;
packetQueue.TryDequeue(out temp);
}
}
fileStream.Close();
}
public static float ValueFromPacket(EMGPacket packet)
{
return(packet.channels[0]);
}