private void BUT_run_Click(object sender, EventArgs e)
{
Utilities.FFT2 fft = new FFT2();
using (OpenFileDialog ofd = new OpenFileDialog())
{
ofd.Filter = "*.wav|*.wav";
ofd.ShowDialog();
if (!File.Exists(ofd.FileName))
return;
var st = File.OpenRead(ofd.FileName);
int bins = 10;
double[] buffer = new double[1 << bins];
int a = 0;
while (st.Position < st.Length)
{
byte[] temp = new byte[2];
var read = st.Read(temp, 0, temp.Length);
var val = (double)BitConverter.ToInt16(temp, 0);
buffer[a] = val;
a++;
if (a == (1 << bins))
{
var fftanswer = fft.rin(buffer, (uint)bins);
var freqt = fft.FreqTable(buffer.Length, 1000);
ZedGraph.PointPairList ppl = new ZedGraph.PointPairList();
for (int b = 0; b < fftanswer.Length; b++)
{
ppl.Add(freqt[b], fftanswer[b]);
}
double xMin, xMax, yMin, yMax;
var curve = new LineItem("FFT", ppl, Color.Red, SymbolType.Diamond);
curve.GetRange(out xMin, out xMax, out yMin, out yMax, true, false, zedGraphControl1.GraphPane);
zedGraphControl1.GraphPane.XAxis.Title.Text = "Freq Hz";
zedGraphControl1.GraphPane.YAxis.Title.Text = "Amplitude";
zedGraphControl1.GraphPane.Title.Text = "FFT";
zedGraphControl1.GraphPane.CurveList.Clear();
zedGraphControl1.GraphPane.CurveList.Add(curve);
zedGraphControl1.Invalidate();
zedGraphControl1.AxisChange();
zedGraphControl1.Refresh();
int width = Console.WindowWidth - 1;
int height = Console.WindowHeight - 1;
int r = 1;
foreach (var ff in fftanswer)
{
int col = (int)((r / (double)fftanswer.Length) * width);
int row = (int)((ff * 0.2) + 0.5);
//Console.SetCursorPosition(col, height - row);
Console.Write("*");
r++;
}
// 50% overlap
st.Seek(-(1 << bins) / 2, SeekOrigin.Current);
a = 0;
buffer = new double[buffer.Length];
//Console.Clear();
}
}
}
}
private void BUT_log2_Click(object sender, EventArgs e)
{
Utilities.FFT2 fft = new FFT2();
using (
OpenFileDialog ofd = new OpenFileDialog())
{
ofd.Filter = "*.log|*.log";
ofd.ShowDialog();
if (!File.Exists(ofd.FileName))
return;
var file = new StreamReader(File.OpenRead(ofd.FileName));
int bins = (int)NUM_bins.Value;
int N = 1 << bins;
Color[] color = new Color[] { Color.Red, Color.Green, Color.Blue, Color.Black, Color.Violet, Color.Orange };
ZedGraphControl[] ctls = new ZedGraphControl[] { zedGraphControl1, zedGraphControl2, zedGraphControl3, zedGraphControl4, zedGraphControl5, zedGraphControl6 };
// 3 imus * 2 sets of measurements(gyr/acc)
datastate[] alldata = new datastate[3 * 2];
for (int a = 0; a < alldata.Length; a++)
alldata[a] = new datastate();
Log.DFLog dflog = new Log.DFLog();
while (!file.EndOfStream)
{
var item = dflog.GetDFItemFromLine(file.ReadLine(), 0);
if (item.msgtype == null)
{
continue;
}
if (item.msgtype.StartsWith("ACC"))
{
int sensorno = int.Parse(item.msgtype.Substring(3)) - 1 + 3;
alldata[sensorno].type = item.msgtype;
int offsetAX = dflog.FindMessageOffset(item.msgtype, "AccX");
int offsetAY = dflog.FindMessageOffset(item.msgtype, "AccY");
int offsetAZ = dflog.FindMessageOffset(item.msgtype, "AccZ");
int offsetTime = dflog.FindMessageOffset(item.msgtype, "TimeUS");
double time = double.Parse(item.items[offsetTime]) / 1000.0;
if (time != alldata[sensorno].lasttime)
alldata[sensorno].timedelta = alldata[sensorno].timedelta * 0.99 + (time - alldata[sensorno].lasttime) * 0.01;
alldata[sensorno].lasttime = time;
alldata[sensorno].datax.Add(double.Parse(item.items[offsetAX]));
alldata[sensorno].datay.Add(double.Parse(item.items[offsetAY]));
alldata[sensorno].dataz.Add(double.Parse(item.items[offsetAZ]));
}
else if (item.msgtype.StartsWith("GYR"))
{
int sensorno = int.Parse(item.msgtype.Substring(3)) - 1;
alldata[sensorno].type = item.msgtype;
int offsetGX = dflog.FindMessageOffset(item.msgtype, "GyrX");
int offsetGY = dflog.FindMessageOffset(item.msgtype, "GyrY");
int offsetGZ = dflog.FindMessageOffset(item.msgtype, "GyrZ");
int offsetTime = dflog.FindMessageOffset(item.msgtype, "TimeUS");
double time = double.Parse(item.items[offsetTime]) / 1000.0;
if (time != alldata[sensorno].lasttime)
alldata[sensorno].timedelta = alldata[sensorno].timedelta * 0.99 + (time - alldata[sensorno].lasttime) * 0.01;
alldata[sensorno].lasttime = time;
alldata[sensorno].datax.Add(double.Parse(item.items[offsetGX]));
alldata[sensorno].datay.Add(double.Parse(item.items[offsetGY]));
alldata[sensorno].dataz.Add(double.Parse(item.items[offsetGZ]));
}
}
int controlindex = 0;
foreach (var sensordata in alldata)
{
if (sensordata.datax.Count <= N)
continue;
double samplerate = 0;
samplerate = Math.Round(1000 / sensordata.timedelta, 1);
double[] freqt = fft.FreqTable(N, (int)samplerate);
double[] avgx = new double[N / 2];
double[] avgy = new double[N / 2];
double[] avgz = new double[N / 2];
int totalsamples = sensordata.datax.Count;
int count = totalsamples / N;
int done = 0;
while (count > 1) // skip last part
{
var fftanswerx = fft.rin(sensordata.datax.Skip(N * done).Take(N).ToArray(), (uint)bins);
var fftanswery = fft.rin(sensordata.datay.Skip(N * done).Take(N).ToArray(), (uint)bins);
var fftanswerz = fft.rin(sensordata.dataz.Skip(N * done).Take(N).ToArray(), (uint)bins);
for (int b = 0; b < N / 2; b++)
{
if (freqt[b] < (double)NUM_startfreq.Value)
continue;
avgx[b] += fftanswerx[b] / (N / 2);
avgy[b] += fftanswery[b] / (N / 2);
avgz[b] += fftanswerz[b] / (N / 2);
}
count--;
done++;
}
ZedGraph.PointPairList pplx = new ZedGraph.PointPairList(freqt, avgx);
ZedGraph.PointPairList pply = new ZedGraph.PointPairList(freqt, avgy);
ZedGraph.PointPairList pplz = new ZedGraph.PointPairList(freqt, avgz);
var curvex = new LineItem(sensordata.type + " x", pplx, color[0], SymbolType.None);
var curvey = new LineItem(sensordata.type + " y", pply, color[1], SymbolType.None);
var curvez = new LineItem(sensordata.type + " z", pplz, color[2], SymbolType.None);
ctls[controlindex].GraphPane.Legend.IsVisible = true;
ctls[controlindex].GraphPane.XAxis.Title.Text = "Freq Hz";
ctls[controlindex].GraphPane.YAxis.Title.Text = "Amplitude";
ctls[controlindex].GraphPane.Title.Text = "FFT " + sensordata.type + " - " + Path.GetFileName(ofd.FileName) + " - " + samplerate + "hz input";
ctls[controlindex].GraphPane.CurveList.Clear();
ctls[controlindex].GraphPane.CurveList.Add(curvex);
ctls[controlindex].GraphPane.CurveList.Add(curvey);
ctls[controlindex].GraphPane.CurveList.Add(curvez);
ctls[controlindex].Invalidate();
ctls[controlindex].AxisChange();
ctls[controlindex].GraphPane.XAxis.Scale.Max = samplerate / 2;
ctls[controlindex].Refresh();
controlindex++;
}
}
}
//FMT, 131, 43, IMU, IffffffIIf, TimeMS,GyrX,GyrY,GyrZ,AccX,AccY,AccZ,ErrG,ErrA,Temp
//FMT, 135, 43, IMU2, IffffffIIf, TimeMS,GyrX,GyrY,GyrZ,AccX,AccY,AccZ,ErrG,ErrA,Temp
//FMT, 149, 43, IMU3, IffffffIIf, TimeMS,GyrX,GyrY,GyrZ,AccX,AccY,AccZ,ErrG,ErrA,Temp
//FMT, 172, 23, ACC1, IIfff, TimeMS,TimeUS,AccX,AccY,AccZ
//FMT, 173, 23, ACC2, IIfff, TimeMS,TimeUS,AccX,AccY,AccZ
//FMT, 174, 23, ACC3, IIfff, TimeMS,TimeUS,AccX,AccY,AccZ
//FMT, 175, 23, GYR1, IIfff, TimeMS,TimeUS,GyrX,GyrY,GyrZ
//FMT, 176, 23, GYR2, IIfff, TimeMS,TimeUS,GyrX,GyrY,GyrZ
//FMT, 177, 23, GYR3, IIfff, TimeMS,TimeUS,GyrX,GyrY,GyrZ
private void myButton1_Click(object sender, EventArgs e)
{
Utilities.FFT2 fft = new FFT2();
using (OpenFileDialog ofd = new OpenFileDialog())
{
ofd.Filter = "*.log|*.log";
ofd.ShowDialog();
if (!File.Exists(ofd.FileName))
return;
var file = new StreamReader(File.OpenRead(ofd.FileName));
int bins = (int)NUM_bins.Value;
int N = 1 << bins;
double[] datainGX = new double[N];
double[] datainGY = new double[N];
double[] datainGZ = new double[N];
double[] datainAX = new double[N];
double[] datainAY = new double[N];
double[] datainAZ = new double[N];
List<double[]> avg = new List<double[]>();
// 6
avg.Add(new double[N / 2]);
avg.Add(new double[N / 2]);
avg.Add(new double[N / 2]);
avg.Add(new double[N / 2]);
avg.Add(new double[N / 2]);
avg.Add(new double[N / 2]);
object[] datas = new object[] { datainGX, datainGY, datainGZ, datainAX, datainAY, datainAZ };
string[] datashead = new string[] { "GYR1-GyrX", "GYR1-GyrY", "GYR1-GyrZ", "ACC1-AccX", "ACC1-AccY", "ACC1-AccZ" };
Color[] color = new Color[] { Color.Red, Color.Green, Color.Black, Color.Violet, Color.Blue, Color.Orange };
ZedGraphControl[] ctls = new ZedGraphControl[] { zedGraphControl1, zedGraphControl2, zedGraphControl3, zedGraphControl4, zedGraphControl5, zedGraphControl6 };
int samplecounta = 0;
int samplecountg = 0;
double lasttime = 0;
double timedelta = 0;
double[] freqt = null;
double samplerate = 0;
Log.DFLog dflog = new Log.DFLog();
while (!file.EndOfStream)
{
var item = dflog.GetDFItemFromLine(file.ReadLine(), 0);
if (item.msgtype == "ACC1")
{
int offsetAX = dflog.FindMessageOffset("ACC1", "AccX");
int offsetAY = dflog.FindMessageOffset("ACC1", "AccY");
int offsetAZ = dflog.FindMessageOffset("ACC1", "AccZ");
int offsetTime = dflog.FindMessageOffset("ACC1", "TimeUS");
double time = double.Parse(item.items[offsetTime]) / 1000.0;
timedelta = timedelta * 0.99 + (time - lasttime) * 0.01;
// we missed gyro data
if (samplecounta >= N)
continue;
datainAX[samplecounta] = double.Parse(item.items[offsetAX]);
datainAY[samplecounta] = double.Parse(item.items[offsetAY]);
datainAZ[samplecounta] = double.Parse(item.items[offsetAZ]);
samplecounta++;
lasttime = time;
}
else if (item.msgtype == "GYR1")
{
int offsetGX = dflog.FindMessageOffset("GYR1", "GyrX");
int offsetGY = dflog.FindMessageOffset("GYR1", "GyrY");
int offsetGZ = dflog.FindMessageOffset("GYR1", "GyrZ");
int offsetTime = dflog.FindMessageOffset("ACC1", "TimeUS");
double time = double.Parse(item.items[offsetTime]) / 1000.0;
// we missed accel data
if (samplecountg >= N)
continue;
datainGX[samplecountg] = double.Parse(item.items[offsetGX]);
datainGY[samplecountg] = double.Parse(item.items[offsetGY]);
datainGZ[samplecountg] = double.Parse(item.items[offsetGZ]);
samplecountg++;
}
if (samplecounta >= N && samplecountg >= N)
{
int inputdataindex = 0;
foreach (var itemlist in datas)
{
var fftanswer = fft.rin((double[])itemlist, (uint)bins);
for (int b = 0; b < N / 2; b++)
{
avg[inputdataindex][b] += fftanswer[b] * (1.0 / (N / 2.0));
}
samplecounta = 0;
samplecountg = 0;
inputdataindex++;
}
}
}
if (freqt == null)
{
samplerate = Math.Round(1000 / timedelta, 1);
freqt = fft.FreqTable(N, (int)samplerate);
}
// 0 out all data befor cutoff
for (int inputdataindex = 0; inputdataindex < 6; inputdataindex++)
{
for (int b = 0; b < N/2; b++)
{
if (freqt[b] < (double) NUM_startfreq.Value)
{
avg[inputdataindex][b] = 0;
continue;
}
break;
}
}
int controlindex = 0;
foreach (var item in avg)
{
ZedGraph.PointPairList ppl = new ZedGraph.PointPairList(freqt, item);
//double xMin, xMax, yMin, yMax;
var curve = new LineItem(datashead[controlindex], ppl, color[controlindex], SymbolType.None);
//curve.GetRange(out xMin, out xMax, out yMin, out yMax, true, false, ctls[c].GraphPane);
ctls[controlindex].GraphPane.Legend.IsVisible = false;
ctls[controlindex].GraphPane.XAxis.Title.Text = "Freq Hz";
ctls[controlindex].GraphPane.YAxis.Title.Text = "Amplitude";
ctls[controlindex].GraphPane.Title.Text = "FFT " + datashead[controlindex] + " - " + Path.GetFileName(ofd.FileName) + " - " + samplerate + "hz input";
ctls[controlindex].GraphPane.CurveList.Clear();
ctls[controlindex].GraphPane.CurveList.Add(curve);
ctls[controlindex].Invalidate();
ctls[controlindex].AxisChange();
ctls[controlindex].Refresh();
controlindex++;
}
}
}