private void EmotivDataWorker(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
while (!worker.CancellationPending)
{
//will collect data
dataReader.DataCollect();
System.Threading.Thread.Sleep(600);
}
if (worker.CancellationPending)
{
e.Cancel = true;
}
}
private void DataTimer_Tick(object sender, EventArgs e)
{
//just in case needing to clear data buffer - discard data by not doing anything to it
if (!OPStart)
{
List <EmotivRawEEG> receivedData = dataReader.DataCollect();
}
if (OPStart)
{
List <EmotivRawEEG> receivedData = dataReader.DataCollect();
#region add received Data
if (receivedData != null)
{
/*add retreive EEG data to the general list*/
foreach (EmotivRawEEG data in receivedData)
{
EEGStorer.Add(data);
}
for (int i = 0; i < receivedData.Count; i++)
{
O1List.Add(receivedData[i].O1);
F3List.Add(receivedData[i].F3);
F4List.Add(receivedData[i].F4);
F7List.Add(receivedData[i].F7);
F8List.Add(receivedData[i].F8);
AF3List.Add(receivedData[i].AF3);
AF4List.Add(receivedData[i].AF4);
}
}
#endregion
#region declared temp variable
int maxFreqO1 = 0, maxFreqF3, maxFreqF4, maxFreqF7, maxFreqF8, maxFreqAF3, maxFreqAF4;
// double maxMag = 0;
double alphaPowerO1 = 0, betaPowerO1 = 0;
double alphaPowerF3 = 0, betaPowerF3 = 0;
double alphaPowerF4 = 0, betaPowerF4 = 0;
double alphaPowerF7 = 0, betaPowerF7 = 0;
double alphaPowerF8 = 0, betaPowerF8 = 0;
double alphaPowerAF3 = 0, betaPowerAF3 = 0;
double alphaPowerAF4 = 0, betaPowerAF4 = 0;
#endregion
int sampleSize = 128;
/*If one of the channel has sample size larger than the given value -
* all channel did. */
if (O1List.Count >= sampleSize)
{
#region compute Alpha beta power
ft.computePower(O1List, sampleSize, out maxFreqO1, out alphaPowerO1, out betaPowerO1);
ft.computePower(F3List, sampleSize, out maxFreqF3, out alphaPowerF3, out betaPowerF3);
ft.computePower(F4List, sampleSize, out maxFreqF4, out alphaPowerF4, out betaPowerF4);
ft.computePower(F7List, sampleSize, out maxFreqF7, out alphaPowerF7, out betaPowerF7);
ft.computePower(F8List, sampleSize, out maxFreqF8, out alphaPowerF8, out betaPowerF8);
ft.computePower(AF3List, sampleSize, out maxFreqAF3, out alphaPowerAF3, out betaPowerAF3);
ft.computePower(AF4List, sampleSize, out maxFreqAF4, out alphaPowerAF4, out betaPowerAF4);
#endregion
BandPower bp = new BandPower()
{
alpha_O1 = alphaPowerO1, beta_O1 = betaPowerO1, dominantFreq_O1 = maxFreqO1,
alpha_F3 = alphaPowerF3, beta_F3 = betaPowerF3, alpha_F4 = alphaPowerF4, beta_F4 = betaPowerF4,
alpha_F7 = alphaPowerF7, beta_F7 = betaPowerF7, alpha_F8 = alphaPowerF8, beta_F8 = betaPowerF8,
alpha_AF3 = alphaPowerAF3, beta_AF3 = betaPowerAF3, alpha_AF4 = alphaPowerAF4, beta_AF4 = betaPowerAF4
};
PowerStorer.Add(bp);
#region comments out
/*
*
* // Compute Eye Open Avg Alpha & Beta
*
* //Compute Percent difference betweeen the the avgAlphaOpen & current alpha power
* //if haven't detected Close eye
*
* if(closeEye ==false)
* {
* if(PowerStorer.Count == 1) {avgAlphaOpen=alphaPower; avgBetaOpen = betaPower;}
* else if (PowerStorer.Count >1)
* {
* if((avgAlphaOpen - alphaPower)/avgAlphaOpen <= 4) // anythreshold
* {
* for(int j=0; j< PowerStorer.Count;j++)
* {
* avgAlphaOpen += PowerStorer[j].alpha;
* }
* avgAlphaOpen = avgAlphaOpen / PowerStorer.Count;
* }
* else
* {
* closeEye = true;
*
* }
* }
* }
*/
#endregion
if (PowerStorer.Count >= 2)
{
double avgAlphaPDifference = 0;
avgAlphaPDifference = (alphaPowerO1 - PowerStorer[PowerStorer.Count - 2].alpha_O1) / PowerStorer[PowerStorer.Count - 2].alpha_O1;
textBox_AlphaDiff.Text = avgAlphaPDifference.ToString();
double avgBetaPDifference = (betaPowerO1 - PowerStorer[PowerStorer.Count - 2].beta_O1) / PowerStorer[PowerStorer.Count - 2].beta_O1;
textBox_BetaDiff.Text = avgBetaPDifference.ToString();
}
//Condition for Close / Open eyes trigger
//if close eye for 2 seconds frame already - reset CloseEye second
/*
* if (alphaPowerO1 >= 60 && alphaPowerO1 <= 100 && betaPowerO1 <= 30)
* {
* CloseEyeTrigger = true;
* }
* else
* {
* CloseEyeTrigger = false;
* }
*
*/
#region command classification
bool trigger = nb.classify(alphaPowerO1, betaPowerO1);
if (trigger)
{
label11.Text = "Trigger on";
listBox1.Items.Add("Trigger On");
triggerOnCount++;
}
else if (!trigger)
{
label11.Text = "Trigger off";
listBox1.Items.Add("Trigger off");
triggerOnCount = 0;
}
if (trigger && command == 1 && (triggerOnCount > 8 || triggerOnCount == 1))
{
command = 2;
listBox1.Items.Add("command: " + command.ToString());
}
else if (trigger && command == 2 && (triggerOnCount > 8 || triggerOnCount == 1))
{
command = 1;
listBox1.Items.Add("command: " + command.ToString());
}
#endregion
#region update TextBox
textBox_freq.Text = maxFreqO1.ToString();
textBox_alphaO1.Text = alphaPowerO1.ToString();
textBox_BetaO1.Text = betaPowerO1.ToString();
textBox_alphaF3.Text = alphaPowerF3.ToString();
textBox_BetaF3.Text = betaPowerF3.ToString();
textBox_alphaF4.Text = alphaPowerF4.ToString();
textBox_BetaF4.Text = betaPowerF4.ToString();
textBox_alphaF7.Text = alphaPowerF7.ToString();
textBox_BetaF7.Text = betaPowerF7.ToString();
textBox_alphaF8.Text = alphaPowerF8.ToString();
textBox_BetaF8.Text = betaPowerF8.ToString();
textBox_alphaAF3.Text = alphaPowerAF3.ToString();
textBox_BetaAF3.Text = betaPowerAF3.ToString();
textBox_alphaAF4.Text = alphaPowerAF4.ToString();
textBox_BetaAF4.Text = betaPowerAF4.ToString();
#endregion
#region update Listbox
//list box
listBox1.Items.Add("O1 Alpha: " + alphaPowerO1.ToString());
listBox1.Items.Add("O1 Beta:" + betaPowerO1.ToString());
listBox1.SelectedIndex = listBox1.Items.Count - 1;
//listBox1.Items.Add();
listBox1.SelectedIndex = -1;
#endregion
// O1List.RemoveRange(0, 64);
}
}
}