private void updatePlot()
{
if (zedGraphControl1.InvokeRequired)
{
var d = new CalldrawGraph(updatePlot);
Invoke(d);
}
else
{
//listA.Clear();
//listB.Clear();
teamAcurve.Clear();
teamBcurve.Clear();
//Thread.Sleep(10);
double[] a = teamA();
double[] b = teamB();
for (int i = 0; i < 100; i++)
{
listA.Add(i, a[i]);
listB.Add(i, b[i]);
}
//adding a single point
//double v = Math.Sin(2 * time * Math.PI / 90);
//listA.Add(new PointPair(time, v));
//double v2 = 2 * Math.Sin(2 * Math.PI * (time / 2) / 45);
//listB.Add(new PointPair(time / 2, v2));
mypane.AxisChange();
zedGraphControl1.Refresh();
}
}
private void updatePlot() //method that updates the plot after receiving new samples
{
if (zedGraphControl1.InvokeRequired || zedGraphControl2.InvokeRequired)
{
var d = new CalldrawGraph(updatePlot); //method used to have safe-cross thread call
Invoke(d);
}
else
{
teamAcurve.Clear();
teamBcurve.Clear();
teamCcurve.Clear();
double[] a = teamA();
double[] b = teamB();
double[] c = teamC();
float sampling_freq = float.Parse(max_sampling_freq.Text);
float freq = float.Parse(freq_box.Text);
int cycles = int.Parse(textBox1.Text);
int points_to_show = (int)(sampling_freq / freq * cycles);
if (points_to_show <= BUFFER_SIZE)
{
for (int i = 0; i < points_to_show; i++)
{
listA.Add((double)(i / sampling_freq), a[i]);
}
mypane_1.XAxis.Scale.Max = (float)(points_to_show / sampling_freq) - (float)(1 / sampling_freq);
}
else
{
for (int i = 0; i < BUFFER_SIZE; i++)
{
listA.Add(i, a[i]);
}
mypane_1.XAxis.Scale.Max = BUFFER_SIZE - 1;
}
if (linear_plot)
{
//adding imaginary part from DFT into respective list
mypane_2.YAxis.Title.Text = "Amplitude(V)";
for (int i = 0; i < BUFFER_SIZE / 2; i++)
{
listB.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), b[i]);
listC.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), c[i]);
}
//adding DC part from DFT into respective list
listB.Add(0, b[BUFFER_SIZE / 2]);
listC.Add(0, c[BUFFER_SIZE / 2]);
//adding real part from DFT into respective list
for (int i = BUFFER_SIZE / 2 + 1; i < BUFFER_SIZE; i++)
{
listB.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), b[i]);
listC.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), c[i]);
}
}
else// plot in DB form
{
double max_db_value = b.Max();
mypane_2.YAxis.Title.Text = "Amplitude(dB)";
//adding imaginary part from DFT into respective list
for (int i = 0; i < BUFFER_SIZE / 2; i++)
{
listB.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), 20 * Math.Log10(b[i] / max_db_value));
listC.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), c[i]);
}
//adding DC part from DFT into respective list
listB.Add(0, 20 * Math.Log10(b[BUFFER_SIZE / 2] / max_db_value));
listC.Add(0, c[BUFFER_SIZE / 2]);
//adding real part from DFT into respective list
for (int i = BUFFER_SIZE / 2 + 1; i < BUFFER_SIZE; i++)
{
listB.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), 20 * Math.Log10(b[i] / max_db_value));
listC.Add((i - BUFFER_SIZE / 2) * (sampling_freq / BUFFER_SIZE), c[i]);
}
}
mypane_2.XAxis.Scale.Max = sampling_freq / 2;
mypane_2.XAxis.Scale.Min = -sampling_freq / 2;
if (DFT_phase)
{
//turning on phase plot and turning off amplitude plot
teamBcurve.IsVisible = false;
teamCcurve.IsVisible = true;
mypane_2.YAxis.IsVisible = false;
mypane_2.Y2Axis.IsVisible = true;
}
else
{
//turning off phase plot and turning on amplitude plot
teamBcurve.IsVisible = true;
teamCcurve.IsVisible = false;
mypane_2.YAxis.IsVisible = true;
mypane_2.Y2Axis.IsVisible = false;
}
mypane_1.AxisChange();
mypane_2.AxisChange();
zedGraphControl1.Refresh();
zedGraphControl2.Refresh();
if (start_pressed && !single_pressed)
{
//sending PIC signal to send another set of data
char[] ch = new char[1];
ch[0] = '~';
_setting._serial.Write(ch, 0, 1); //sending start_sampling_signal
//sending PIC signal to send another max sampling freq data
ch[0] = '%';
_setting._serial.Write(ch, 0, 1); //sending start_sampling_signal
}
}
}
