override public void Draw(Graphics g, DataBlock db)
{
DrawSelection(g);
DrawHorizontalLines(g);
DrawVerticalLines(g);
float xx = 0;
int i = 0;
int i0 = (int)(db.GetChannelLength() * MinXD / db.GetTotalTime());
int i1 = (int)(db.GetChannelLength() * MaxXD / db.GetTotalTime());
try
{
float waveheight = m_Bounds.Height / 16;
int last_rv = 0;
for (i = i0; i <= i1; i++)
{
int rawvolt = db.GetVoltage(0, i);
float time = db.GetTime(i);
float x = ValueXToRect(time);
for (int ch = 0; ch < db.m_channels; ch++)
{
//skip unselected channels
if ((db.m_channelsBitField & (1 << ch)) == 0)
{
continue;
}
float y = ValueYToRect((ch + 1) * DivY);
if (((last_rv >> ch) & 1) != ((rawvolt >> ch) & 1))
{
g.DrawLine(Pens.Red, xx, y, xx, y - waveheight);
}
if (((rawvolt >> ch) & 1) > 0)
{
y -= waveheight;
}
g.DrawLine(Pens.Red, xx, y, x, y);
}
xx = x;
last_rv = rawvolt;
}
}
catch
{
Console.WriteLine("{0} {1} {2}", db, m_Bounds, i);
}
}
override public void Draw(Graphics g, DataBlock db)
{
DrawSelection(g);
DrawHorizontalLines(g);
DrawVerticalLines(g);
float xx = 0;
int i = 0;
int i0 = (int)(db.GetChannelLength() * MinXD / db.GetTotalTime());
int i1 = (int)(db.GetChannelLength() * MaxXD / db.GetTotalTime());
try
{
float waveheight = m_Bounds.Height / 16;
int last_rv = 0;
for (i = i0; i <= i1; i++)
{
int rawvolt = db.GetVoltage(0, i);
float time = db.GetTime(i);
float x = ValueXToRect( time);
for (int ch = 0; ch < db.m_channels; ch++)
{
//skip unselected channels
if ((db.m_channelsBitField & (1 << ch)) == 0)
continue;
float y = ValueYToRect( (ch +1) * DivY);
if ( ((last_rv >>ch)&1) != ((rawvolt>>ch)&1))
{
g.DrawLine(Pens.Red, xx, y, xx, y - waveheight);
}
if ( ((rawvolt >> ch)&1) >0)
{
y -= waveheight;
}
g.DrawLine(Pens.Red, xx, y, x, y);
}
xx = x;
last_rv = rawvolt;
}
}
catch
{
Console.WriteLine("{0} {1} {2}", db, m_Bounds, i);
}
}
override public void SetDataBlock(DataBlock db)
{
m_db = db;
int lastValue=0;
int run = 0;
int average = m_db.GetAverage( 0 );
textBox1.Text += string.Format("Average {0}\r\n", average);
textBox1.Text += string.Format("Sample Rate {0}\r\n", db.m_sampleRate);
textBox1.Text += string.Format("\r\nFreq from zeroes:\r\n", db.m_sampleRate);
for (int i = 0; i < db.GetChannelLength(); i++)
{
int value = db.GetVoltage(0, i);;
if (value > average && lastValue < average)
{
textBox1.Text += string.Format("{0} {1} {2}\r\n", i, run, 1.0/((float)run/(float)db.m_sampleRate) );
run = 0;
}
run++;
lastValue = value;
}
textBox1.Text += string.Format("\r\nFreq from self correlation:\r\n", db.m_sampleRate);
double old = 10;
for (int i = 0; i < db.GetChannelLength() / 2; i++)
{
double c = correlate(db, i);
if (c > old)
{
double waveLength = 2* (double)i / (double)db.m_sampleRate;
textBox1.Text += string.Format("{0}\r\n", 1 / waveLength);
break;
}
old = c;
}
}
override public void SetDataBlock(DataBlock db)
{
m_db = db;
int lastValue = 0;
int run = 0;
int average = m_db.GetAverage(0);
textBox1.Text += string.Format("Average {0}\r\n", average);
textBox1.Text += string.Format("Sample Rate {0}\r\n", db.m_sampleRate);
textBox1.Text += string.Format("\r\nFreq from zeroes:\r\n", db.m_sampleRate);
for (int i = 0; i < db.GetChannelLength(); i++)
{
int value = db.GetVoltage(0, i);;
if (value > average && lastValue < average)
{
textBox1.Text += string.Format("{0} {1} {2}\r\n", i, run, 1.0 / ((float)run / (float)db.m_sampleRate));
run = 0;
}
run++;
lastValue = value;
}
textBox1.Text += string.Format("\r\nFreq from self correlation:\r\n", db.m_sampleRate);
double old = 10;
for (int i = 0; i < db.GetChannelLength() / 2; i++)
{
double c = correlate(db, i);
if (c > old)
{
double waveLength = 2 * (double)i / (double)db.m_sampleRate;
textBox1.Text += string.Format("{0}\r\n", 1 / waveLength);
break;
}
old = c;
}
}
override public void SetDataBlock(DataBlock db)
{
m_db = new DataBlock();
m_db.Copy(db);
int time = 0;
bool oldBit = false;
for (int i = 0; i < m_db.GetChannelLength(); i++)
{
bool bit = m_db.GetVoltage(0, i) > 10;
if (oldBit == false && bit == true)
{
Process(false, time);
time = 0;
}
else if (oldBit == true && bit == false)
{
Process(true, time);
time = 0;
}
else
{
time++;
}
oldBit = bit;
}
textBox1.Text += "histo\r\n";
List <int> keys = new List <int>();
foreach (int i in m_histo.Keys)
{
keys.Add(i);
}
keys.Sort();
foreach (int i in keys)
{
int v = m_histo[i];
textBox1.Text += string.Format("{0:000} {1:000} ", i, v) + "\r\n";
}
}
override public void SetDataBlock(DataBlock db)
{
m_db = new DataBlock();
m_db.Copy(db);
int time = 0;
bool oldBit = false;
for (int i = 0; i < m_db.GetChannelLength(); i++)
{
bool bit = m_db.GetVoltage(0,i)>10;
if ( oldBit == false && bit == true )
{
Process(false, time);
time=0;
}
else if (oldBit == true && bit == false)
{
Process(true, time);
time = 0;
}
else
{
time++;
}
oldBit = bit;
}
textBox1.Text += "histo\r\n";
List<int> keys = new List<int>();
foreach (int i in m_histo.Keys)
{
keys.Add(i);
}
keys.Sort();
foreach (int i in keys)
{
int v = m_histo[i];
textBox1.Text += string.Format("{0:000} {1:000} ", i, v) + "\r\n";
}
}
double correlate(DataBlock db, int offset)
{
int length = db.GetChannelLength();
int res = 0;
int n1 = 0;
int n2 = 0;
for (int i = 0; i < length - offset; i++)
{
int v1 = db.GetVoltage(0, i);
int v2 = db.GetVoltage(0, i + offset);
n1 += v1 * v1;
n2 += v2 * v2;
res += v1 * v2;
}
return((double)res / (double)(Math.Sqrt(n1) * Math.Sqrt(n2)));
}
double correlate(DataBlock db, int offset)
{
int length = db.GetChannelLength();
int res = 0;
int n1 = 0;
int n2 = 0;
for (int i = 0; i < length - offset; i++)
{
int v1 = db.GetVoltage(0, i);
int v2 = db.GetVoltage(0, i + offset);
n1 += v1 * v1;
n2 += v2 * v2;
res += v1 * v2;
}
return (double)res / (double)(Math.Sqrt(n1) * Math.Sqrt(n2));
}
override public void SetDataBlock(DataBlock db)
{
dataBlock.Copy(db);
if (enabled)
{
filter.SetSampleRate(db.m_sampleRate);
//filter a few times the first value to initialize filter
for (int i = 0; i < 4; i++)
{
double volt = db.GetVoltage(0, 0);
filter.DoFilter(volt);
}
for (int i = 0; i < db.GetChannelLength(); i++)
{
double volt = db.GetVoltage(0, i);
dataBlock.SetVoltage(0, i, (int)filter.DoFilter(volt));
}
}
base.SetDataBlock(dataBlock);
}
override public void SetDataBlock(DataBlock db)
{
dataBlock.Copy(db);
if (enabled)
{
filter.SetSampleRate(db.m_sampleRate);
//filter a few times the first value to initialize filter
for (int i = 0; i < 4; i++)
{
double volt = db.GetVoltage(0, 0);
filter.DoFilter(volt);
}
for (int i = 0; i < db.GetChannelLength(); i++)
{
double volt = db.GetVoltage(0, i);
dataBlock.SetVoltage(0, i, (int)filter.DoFilter(volt));
}
}
base.SetDataBlock(dataBlock);
}
override public bool GetDataBlock(ref DataBlock db)
{
bool result = true;
lock (thisLock)
{
//assume it timed out
db.m_min = 0;
db.m_max = 5;
db.m_channels = GetNumberOfEnabledChannels();
db.m_channelsBitField = GetChannelBitField();
db.m_triggerVoltage = 0;
db.m_triggerPos = 0;
db.m_sampleRate = GetSampleRate();
db.m_samplesPerChannel = GetNumberOfSamplesPerChannel();
db.m_dataType = DataBlock.DATA_TYPE.ANALOG;
db.Alloc();
}
for (int i = 0; i < db.GetChannelLength(); i++)
{
/*
* byte header = GetStream().ReadByte();
* if (header < 128)
* {
* byte b1 = GetStream().ReadByte();
* byte b2 = GetStream().ReadByte();
*
* for (int c = 0; c < db.m_channels; c++)
* {
* UInt16 v = (UInt16)(GetStream().ReadByte() * 256 + GetStream().ReadByte());
* db.SetVoltage(c, i, v);
* }
* GetStream().ReadByte();
* }
* else
* {
* GetResponse(header);
*
* //if command received then abort
* for (; i < db.GetChannelLength(); i++)
* {
* for (int c = 0; c < db.m_channels; c++)
* {
* db.SetVoltage(c, i, 0);
* }
* }
*
* }
*/
byte[] header = new byte[1];
byte[] data = new byte[20];
Read(header, 1);
if (header[0] < 128)
{
Read(data, 3 + 2 * db.m_channels);
Console.WriteLine("{0} {1} {2} {3}", header[0], data[0], data[1], data[2]);
}
else
{
Read(data, 3);
Console.WriteLine("* {0} {1} {2} {3}", header[0], data[0], data[1], data[2]);
}
}
db.m_result = DataBlock.RESULT.OK;
return(result);
}
override public bool GetDataBlock(ref DataBlock db)
{
bool result;
//assume it timed out
db.m_result = DataBlock.RESULT.TIMEOUT;
if (GetNumberOfEnabledChannels() == 0)
{
return(false);
}
//-------------Get settings this needs a crytical section)
//
int numberOfSamples;
int numberOfEnabledChannels;
uint channelsBitField;
int sampleRate;
lock (thisLock)
{
numberOfSamples = GetNumberOfSamplesPerChannel();
numberOfEnabledChannels = GetNumberOfEnabledChannels();
channelsBitField = GetChannelBitField();
sampleRate = GetSampleRate();
}
//-------------Request data
byte[] configBuffer = new byte[10];
configBuffer[0] = (byte)COMMANDS.READ_ADC_TRACE;
configBuffer[1] = m_triggerValue;
configBuffer[2] = (byte)(numberOfSamples >> 8);
configBuffer[3] = (byte)(numberOfSamples & 0xff);
configBuffer[4] = (byte)numberOfEnabledChannels;
int index = 0;
for (byte i = 0; i < 4; i++)
{
if (((channelsBitField >> i) & 1) != 0)
{
configBuffer[5 + index] = i;
index++;
}
}
configBuffer[9] = (byte)127; //pwm
Write(configBuffer, configBuffer.Length);
//-------------Get data
Read(res, 1);
if (res[0] == 85)
{
db.m_min = 0;
db.m_max = 5;
db.m_channels = numberOfEnabledChannels;
db.m_channelsBitField = channelsBitField;
db.m_triggerVoltage = 0;
db.m_triggerPos = 0;
db.m_sampleRate = (db.m_channels > 0) ? (sampleRate / db.m_channels) : 0;
db.m_samplesPerChannel = numberOfSamples;
db.m_dataType = DataBlock.DATA_TYPE.ANALOG;
db.Alloc();
//read actual data
if (m_arduinoBuffer.Length != db.m_samplesPerChannel * db.m_channels)
{
m_arduinoBuffer = new byte[db.m_samplesPerChannel * db.m_channels];
}
result = Read(m_arduinoBuffer, m_arduinoBuffer.Length);
index = 0;
for (int ch = 0; ch < 2; ch++)
{
if (((db.m_channelsBitField >> ch) & 1) == 1)
{
for (int i = 0; i < db.GetChannelLength(); i++)
{
db.SetVoltage(index, i, m_arduinoBuffer[i * db.m_channels + index]);
}
index++;
}
}
db.m_result = DataBlock.RESULT.OK;
return(result);
}
return(false);
}
private void DrawGraph(Graphics g, Pen p, DataBlock db, int channel)
{
float yy = 0;
float xx = 0;
int i = 0;
int i0 = (int)Math.Floor( lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MinXD) );
int i1 = (int)Math.Ceiling( lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MaxXD) )+1;
if (i1 > db.GetChannelLength())
{
i1 = db.GetChannelLength();
}
if (db.m_Annotations != null)
{
for (int an = 0; an < db.m_Annotations.Length; an++)
{
float time = db.GetTime(db.m_Annotations[an]);
float x = ValueXToRect(time);
g.DrawLine(Pens.Green, x, 0, x, ValueYToRect(5));
}
}
try
{
for (i = i0; i < i1; i++)
{
int rawvolt = db.GetVoltage(channel, i);
float time = db.GetTime(i);
float x = ValueXToRect(time);
float y = ValueYToRect(rawvolt);
if (i > 0)
{
g.DrawLine(p, xx, yy, x, y);
if (showValueTicks)
{
g.DrawLine(p, x, y-2, x, y+2);
g.DrawLine(p, x - 2, y, x + 2, y);
}
}
yy = y;
xx = x;
}
}
catch
{
Console.WriteLine("{0} {1} {2}", db, m_Bounds, i);
}
//Cursor.Hide();
if (m_mouse != null)
{
DrawCross(g, Pens.Blue, m_mouse.X, m_mouse.Y);
}
{
float t = (db.m_triggerPos * db.GetTotalTime()) / (float)db.GetChannelLength();
float x = ValueXToRect(t);
g.DrawLine(Pens.Green, x, m_Bounds.Y, x, m_Bounds.Y + m_Bounds.Height);
}
Point pp = new Point();
pp.X = 0;
pp.Y = 32;
if (m_mouse != null)
{
float time = RectToValueX(m_mouse.X);
float voltage = RectToValueY(m_mouse.Y);
string info = string.Format("{0} ({1}, {2})", db.m_sample, ToEngineeringNotation(time), voltage);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
info = string.Format("({0}s/div, {1}Ks/s)", ToEngineeringNotation(DivX), db.m_sampleRate / 1000);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
if (Selected())
{
if ((m_selectT0 < db.GetTotalTime()) && (m_selectT1 < db.GetTotalTime()))
{
g.DrawString(string.Format("({0}, {1}) - ({2}, {3})", ToEngineeringNotation(m_selectT0), db.GetVoltage(0, m_selectT0), ToEngineeringNotation(m_selectT1), db.GetVoltage(0, m_selectT1)), parent.Font, Brushes.White, pp);
pp.Y += 16;
g.DrawString(string.Format("ΔVoltage = {0}", db.GetVoltage(0, m_selectT1) - db.GetVoltage(0, m_selectT0)), parent.Font, Brushes.White, pp);
pp.Y += 16;
}
string time = string.Format("ΔTime = {0}", ToEngineeringNotation(m_selectT1 - m_selectT0));
if (m_selectT1 - m_selectT0 > 0)
{
time += string.Format(", {0} Hz", (int)(1.0f / (m_selectT1 - m_selectT0)));
}
g.DrawString(time, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
}
override public void Draw(Graphics g, DataBlock db)
{
Rectangle r = new Rectangle();
r = m_Bounds;
if (f == null)
{
f = new fft(1024);
}
if (db.m_result != DataBlock.RESULT.OK)
{
pp.X = 0;
pp.Y = 0;
g.DrawString(string.Format("Waiting for a chunk of data to analyze"), parent.Font, Brushes.White, pp);
return;
}
if (db.GetChannelLength() < f.GetNumOfSamples())
{
pp.X = 0;
pp.Y = 0;
g.DrawString(string.Format("FFT needs at least 1024 samples to work, got only {0}, try increasing the measurement time",db.GetChannelLength()) , parent.Font, Brushes.White, pp);
return;
}
for (int i = 0; i < f.GetNumOfSamples(); i++)
{
f.x[i] = db.GetVoltage(0, i);
f.y[i] = 0;
}
f.FFT(0);
int maxFreq = db.m_sampleRate / 2;
int minFreq = 0;
//margin at the bottom
r.Height -= 20;
r.Width = 1024;
r.X -= (int)MinXD;
if (drawSlidingFFT)
{
DrawSlidingFFT(g, r, db);
r.Y -= 256;
DrawFFTBars(g, r);
r.Y += 256;
}
else
{
DrawFFTBars(g, r);
}
int freqStep;
for (freqStep = 500; freqStep < maxFreq; freqStep += 500)
{
int ft = lerp(0, f.GetNumOfSamples() / 2, minFreq, maxFreq, freqStep);
if (ft > 30)
break;
}
//draw legend
for (int i = 0; i < (int)maxFreq; i += freqStep)
{
int x = lerp(0, 512, minFreq, maxFreq, i);
pp.X = r.X + 2 * x;
pp.Y = r.Bottom;
g.DrawLine(Pens.Gray, pp.X, 0, pp.X, pp.Y);
g.DrawString(string.Format("{0}", i), parent.Font, Brushes.White, pp);
}
if (m_mouse != null)
{
DrawCross(g, Pens.Blue, m_mouse.X, m_mouse.Y);
pp.X = r.X ;
pp.Y = r.Y + 40;
g.DrawString(string.Format("Freq: {0} Hz", ((m_mouse.X / 2) * maxFreq) / f.GetNumOfSamples() / 2), parent.Font, Brushes.White, pp);
}
}
public static int LoopThoughWave()
{
for (int timeout = 0; timeout < 65535; timeout++)
{
int v;
if (adc_ptr >= m_db.GetChannelLength())
{
v = 0;
}
else
{
v = adcRead();
}
if (extreme == v)
{
fine++;
}
if (
((find_max == true) && (v > extreme)) ||
((find_max == false) && (v < extreme))
)
{
extreme = v;
extreme_time = delta_time;
fine = 0;
}
if (find_max == true)
{
if (v < (zero - threshold))
{
find_max = false;
extreme_time += (byte)(fine / 2);
delta_time -= extreme_time;
delta_time++;
return(extreme_time);
}
}
else
{
if (v > (zero + threshold))
{
find_max = true;
extreme_time += (byte)(fine / 2);
delta_time -= extreme_time;
delta_time++;
return(extreme_time);
}
}
delta_time++;
}
return(255);
}
override public bool GetDataBlock(ref DataBlock db)
{
bool result;
//assume it timed out
db.m_result = DataBlock.RESULT.TIMEOUT;
if (GetNumberOfEnabledChannels() == 0)
{
return false;
}
//-------------Get settings this needs a crytical section)
//
int numberOfSamples;
int numberOfEnabledChannels;
uint channelsBitField;
int sampleRate;
lock (thisLock)
{
numberOfSamples = GetNumberOfSamplesPerChannel();
numberOfEnabledChannels = GetNumberOfEnabledChannels();
channelsBitField = GetChannelBitField();
sampleRate = GetSampleRate();
}
//-------------Request data
byte[] configBuffer = new byte[10];
configBuffer[0] = (byte)COMMANDS.READ_ADC_TRACE;
configBuffer[1] = m_triggerValue;
configBuffer[2] = (byte)(numberOfSamples >> 8);
configBuffer[3] = (byte)(numberOfSamples & 0xff);
configBuffer[4] = (byte)numberOfEnabledChannels;
int index = 0;
for (byte i = 0; i < 4; i++)
{
if (((channelsBitField>>i)&1)!=0)
{
configBuffer[5 + index] = i;
index++;
}
}
configBuffer[9] = (byte)127; //pwm
Write(configBuffer, configBuffer.Length);
//-------------Get data
Read(res, 1);
if (res[0] == 85)
{
db.m_min = 0;
db.m_max = 5;
db.m_channels = numberOfEnabledChannels;
db.m_channelsBitField = channelsBitField;
db.m_triggerVoltage = 0;
db.m_triggerPos = 0;
db.m_sampleRate = (db.m_channels > 0) ? (sampleRate / db.m_channels) : 0;
db.m_samplesPerChannel = numberOfSamples;
db.m_dataType = DataBlock.DATA_TYPE.ANALOG;
db.Alloc();
//read actual data
if (m_arduinoBuffer.Length != db.m_samplesPerChannel * db.m_channels)
{
m_arduinoBuffer = new byte[db.m_samplesPerChannel * db.m_channels];
}
result = Read(m_arduinoBuffer, m_arduinoBuffer.Length);
index = 0;
for(int ch=0;ch<2;ch++)
{
if ( ((db.m_channelsBitField>>ch)&1) == 1)
{
for (int i = 0; i < db.GetChannelLength(); i++)
{
db.SetVoltage(index, i, m_arduinoBuffer[i * db.m_channels + index]);
}
index++;
}
}
db.m_result = DataBlock.RESULT.OK;
return result;
}
return false;
}
private void DrawGraph(Graphics g, Pen p, DataBlock db, int channel)
{
float yy = 0;
float xx = 0;
int i = 0;
int i0 = (int)Math.Floor(lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MinXD));
int i1 = (int)Math.Ceiling(lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MaxXD)) + 1;
if (i1 > db.GetChannelLength())
{
i1 = db.GetChannelLength();
}
if (db.m_Annotations != null)
{
for (int an = 0; an < db.m_Annotations.Length; an++)
{
float time = db.GetTime(db.m_Annotations[an]);
float x = ValueXToRect(time);
g.DrawLine(Pens.Green, x, 0, x, ValueYToRect(5));
}
}
try
{
for (i = i0; i < i1; i++)
{
int rawvolt = db.GetVoltage(channel, i);
float time = db.GetTime(i);
float x = ValueXToRect(time);
float y = ValueYToRect(rawvolt);
if (i > 0)
{
g.DrawLine(p, xx, yy, x, y);
if (showValueTicks)
{
g.DrawLine(p, x, y - 2, x, y + 2);
g.DrawLine(p, x - 2, y, x + 2, y);
}
}
yy = y;
xx = x;
}
}
catch
{
Console.WriteLine("{0} {1} {2}", db, m_Bounds, i);
}
//Cursor.Hide();
if (m_mouse != null)
{
DrawCross(g, Pens.Blue, m_mouse.X, m_mouse.Y);
}
{
float t = (db.m_triggerPos * db.GetTotalTime()) / (float)db.GetChannelLength();
float x = ValueXToRect(t);
g.DrawLine(Pens.Green, x, m_Bounds.Y, x, m_Bounds.Y + m_Bounds.Height);
}
Point pp = new Point();
pp.X = 0;
pp.Y = 32;
if (m_mouse != null)
{
float time = RectToValueX(m_mouse.X);
float voltage = RectToValueY(m_mouse.Y);
string info = string.Format("{0} ({1}, {2})", db.m_sample, ToEngineeringNotation(time), voltage);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
info = string.Format("({0}s/div, {1}Ks/s)", ToEngineeringNotation(DivX), db.m_sampleRate / 1000);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
if (Selected())
{
if ((m_selectT0 < db.GetTotalTime()) && (m_selectT1 < db.GetTotalTime()))
{
g.DrawString(string.Format("({0}, {1}) - ({2}, {3})", ToEngineeringNotation(m_selectT0), db.GetVoltage(0, m_selectT0), ToEngineeringNotation(m_selectT1), db.GetVoltage(0, m_selectT1)), parent.Font, Brushes.White, pp);
pp.Y += 16;
g.DrawString(string.Format("ΔVoltage = {0}", db.GetVoltage(0, m_selectT1) - db.GetVoltage(0, m_selectT0)), parent.Font, Brushes.White, pp);
pp.Y += 16;
}
string time = string.Format("ΔTime = {0}", ToEngineeringNotation(m_selectT1 - m_selectT0));
if (m_selectT1 - m_selectT0 > 0)
{
time += string.Format(", {0} Hz", (int)(1.0f / (m_selectT1 - m_selectT0)));
}
g.DrawString(time, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
}
override public void Draw(Graphics g, DataBlock db)
{
Rectangle r = new Rectangle();
r = m_Bounds;
if (f == null)
{
f = new fft(1024);
}
if (db.m_result != DataBlock.RESULT.OK)
{
pp.X = 0;
pp.Y = 0;
g.DrawString(string.Format("Waiting for a chunk of data to analyze"), parent.Font, Brushes.White, pp);
return;
}
if (db.GetChannelLength() < f.GetNumOfSamples())
{
pp.X = 0;
pp.Y = 0;
g.DrawString(string.Format("FFT needs at least 1024 samples to work, got only {0}, try increasing the measurement time", db.GetChannelLength()), parent.Font, Brushes.White, pp);
return;
}
for (int i = 0; i < f.GetNumOfSamples(); i++)
{
f.x[i] = db.GetVoltage(0, i);
f.y[i] = 0;
}
f.FFT(0);
int maxFreq = db.m_sampleRate / 2;
int minFreq = 0;
//margin at the bottom
r.Height -= 20;
r.Width = 1024;
r.X -= (int)MinXD;
if (drawSlidingFFT)
{
DrawSlidingFFT(g, r, db);
r.Y -= 256;
DrawFFTBars(g, r);
r.Y += 256;
}
else
{
DrawFFTBars(g, r);
}
int freqStep;
for (freqStep = 500; freqStep < maxFreq; freqStep += 500)
{
int ft = lerp(0, f.GetNumOfSamples() / 2, minFreq, maxFreq, freqStep);
if (ft > 30)
{
break;
}
}
//draw legend
for (int i = 0; i < (int)maxFreq; i += freqStep)
{
int x = lerp(0, 512, minFreq, maxFreq, i);
pp.X = r.X + 2 * x;
pp.Y = r.Bottom;
g.DrawLine(Pens.Gray, pp.X, 0, pp.X, pp.Y);
g.DrawString(string.Format("{0}", i), parent.Font, Brushes.White, pp);
}
if (m_mouse != null)
{
DrawCross(g, Pens.Blue, m_mouse.X, m_mouse.Y);
pp.X = r.X;
pp.Y = r.Y + 40;
g.DrawString(string.Format("Freq: {0} Hz", ((m_mouse.X / 2) * maxFreq) / f.GetNumOfSamples() / 2), parent.Font, Brushes.White, pp);
}
}
public override bool GetDataBlock(ref DataBlock db)
{
bool result = true;
lock (thisLock)
{
//assume it timed out
db.m_min = 0;
db.m_max = 5;
db.m_channels = GetNumberOfEnabledChannels();
db.m_channelsBitField = GetChannelBitField();
db.m_triggerVoltage = 0;
db.m_triggerPos = 0;
db.m_sampleRate = GetSampleRate();
db.m_samplesPerChannel = GetNumberOfSamplesPerChannel();
db.m_dataType = DataBlock.DATA_TYPE.ANALOG;
db.Alloc();
}
for (int i = 0; i < db.GetChannelLength(); i++)
{
/*
byte header = GetStream().ReadByte();
if (header < 128)
{
byte b1 = GetStream().ReadByte();
byte b2 = GetStream().ReadByte();
for (int c = 0; c < db.m_channels; c++)
{
UInt16 v = (UInt16)(GetStream().ReadByte() * 256 + GetStream().ReadByte());
db.SetVoltage(c, i, v);
}
GetStream().ReadByte();
}
else
{
GetResponse(header);
//if command received then abort
for (; i < db.GetChannelLength(); i++)
{
for (int c = 0; c < db.m_channels; c++)
{
db.SetVoltage(c, i, 0);
}
}
}
*/
byte[] header = new byte[1];
byte[] data = new byte[20];
Read(header, 1);
if (header[0] < 128)
{
Read(data, 3 + 2 * db.m_channels);
Console.WriteLine("{0} {1} {2} {3}", header[0], data[0], data[1], data[2]);
}
else
{
Read(data, 3);
Console.WriteLine("* {0} {1} {2} {3}",header[0],data[0],data[1],data[2]);
}
}
db.m_result = DataBlock.RESULT.OK;
return result;
}
