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Move eye diagram from tools to new graph type, enable zoom/pan on graphs

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This commit is contained in:
Jan Käberich 2022-10-21 16:50:04 +02:00
parent 329f4487ee
commit ee3c6274ad
23 changed files with 1997 additions and 1052 deletions
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13
Software/PC_Application/LibreVNA-GUI/CustomWidgets/tilewidget.cpp
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@ -5,6 +5,7 @@
#include "Traces/tracesmithchart.h" #include "Traces/tracesmithchart.h"
#include "Traces/tracewaterfall.h" #include "Traces/tracewaterfall.h"
#include "Traces/tracepolarchart.h" #include "Traces/tracepolarchart.h"
#include "Traces/eyediagramplot.h"
#include <QDebug> #include <QDebug>
@ -76,6 +77,9 @@ nlohmann::json TileWidget::toJSON()
case TracePlot::Type::PolarChart: case TracePlot::Type::PolarChart:
plotname = "PolarChart"; plotname = "PolarChart";
break; break;
case TracePlot::Type::EyeDiagram:
plotname = "EyeDiagram";
break;
} }
j["plot"] = plotname; j["plot"] = plotname;
j["plotsettings"] = content->toJSON(); j["plotsettings"] = content->toJSON();
@ -108,6 +112,8 @@ void TileWidget::fromJSON(nlohmann::json j)
content = new TraceWaterfall(model); content = new TraceWaterfall(model);
} else if (plotname == "PolarChart"){ } else if (plotname == "PolarChart"){
content = new TracePolarChart(model); content = new TracePolarChart(model);
} else if (plotname == "EyeDiagram"){
content = new EyeDiagramPlot(model);
} }
if(content) { if(content) {
setContent(content); setContent(content);
@ -337,3 +343,10 @@ void TileWidget::on_bPolarchart_clicked()
{ {
setContent(new TracePolarChart(model)); setContent(new TracePolarChart(model));
} }
void TileWidget::on_eyeDiagram_clicked()
{
auto plot = new EyeDiagramPlot(model);
setContent(plot);
plot->axisSetupDialog();
}

3
Software/PC_Application/LibreVNA-GUI/CustomWidgets/tilewidget.h
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@ -45,10 +45,11 @@ private slots:
void on_bXYplot_clicked(); void on_bXYplot_clicked();
void on_plotDoubleClicked(); void on_plotDoubleClicked();
void plotDeleted(); void plotDeleted();
void on_bWaterfall_clicked(); void on_bWaterfall_clicked();
void on_bPolarchart_clicked(); void on_bPolarchart_clicked();
void on_eyeDiagram_clicked();
private: private:
TileWidget(TraceModel &model, TileWidget &parent); TileWidget(TraceModel &model, TileWidget &parent);
void split(bool moveContentToSecondChild = false); void split(bool moveContentToSecondChild = false);

7
Software/PC_Application/LibreVNA-GUI/CustomWidgets/tilewidget.ui
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@ -99,6 +99,13 @@
</property> </property>
</widget> </widget>
</item> </item>
<item>
<widget class="QPushButton" name="eyeDiagram">
<property name="text">
<string>Eye Diagram</string>
</property>
</widget>
</item>
</layout> </layout>
</widget> </widget>
</item> </item>

6
Software/PC_Application/LibreVNA-GUI/LibreVNA-GUI.pro
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@ -33,7 +33,6 @@ HEADERS += \
SpectrumAnalyzer/spectrumanalyzer.h \ SpectrumAnalyzer/spectrumanalyzer.h \
SpectrumAnalyzer/tracewidgetsa.h \ SpectrumAnalyzer/tracewidgetsa.h \
Tools/eseries.h \ Tools/eseries.h \
Tools/eyediagramdialog.h \
Tools/impedancematchdialog.h \ Tools/impedancematchdialog.h \
Tools/parameters.h \ Tools/parameters.h \
Traces/Marker/marker.h \ Traces/Marker/marker.h \
@ -95,6 +94,7 @@ HEADERS += \
Traces/Math/timegate.h \ Traces/Math/timegate.h \
Traces/Math/tracemath.h \ Traces/Math/tracemath.h \
Traces/Math/windowfunction.h \ Traces/Math/windowfunction.h \
Traces/eyediagramplot.h \
Traces/fftcomplex.h \ Traces/fftcomplex.h \
Traces/sparamtraceselector.h \ Traces/sparamtraceselector.h \
Traces/trace.h \ Traces/trace.h \
@ -177,7 +177,6 @@ SOURCES += \
SpectrumAnalyzer/spectrumanalyzer.cpp \ SpectrumAnalyzer/spectrumanalyzer.cpp \
SpectrumAnalyzer/tracewidgetsa.cpp \ SpectrumAnalyzer/tracewidgetsa.cpp \
Tools/eseries.cpp \ Tools/eseries.cpp \
Tools/eyediagramdialog.cpp \
Tools/impedancematchdialog.cpp \ Tools/impedancematchdialog.cpp \
Tools/parameters.cpp \ Tools/parameters.cpp \
Traces/Marker/marker.cpp \ Traces/Marker/marker.cpp \
@ -228,6 +227,7 @@ SOURCES += \
Traces/Math/timegate.cpp \ Traces/Math/timegate.cpp \
Traces/Math/tracemath.cpp \ Traces/Math/tracemath.cpp \
Traces/Math/windowfunction.cpp \ Traces/Math/windowfunction.cpp \
Traces/eyediagramplot.cpp \
Traces/fftcomplex.cpp \ Traces/fftcomplex.cpp \
Traces/sparamtraceselector.cpp \ Traces/sparamtraceselector.cpp \
Traces/trace.cpp \ Traces/trace.cpp \
@ -305,7 +305,6 @@ FORMS += \
Device/firmwareupdatedialog.ui \ Device/firmwareupdatedialog.ui \
Device/manualcontroldialog.ui \ Device/manualcontroldialog.ui \
Generator/signalgenwidget.ui \ Generator/signalgenwidget.ui \
Tools/eyediagramdialog.ui \
Tools/impedancematchdialog.ui \ Tools/impedancematchdialog.ui \
Traces/Marker/markerwidget.ui \ Traces/Marker/markerwidget.ui \
Traces/Math/dftdialog.ui \ Traces/Math/dftdialog.ui \
@ -321,6 +320,7 @@ FORMS += \
Traces/Math/timegatedialog.ui \ Traces/Math/timegatedialog.ui \
Traces/Math/timegateexplanationwidget.ui \ Traces/Math/timegateexplanationwidget.ui \
Traces/XYPlotConstantLineEditDialog.ui \ Traces/XYPlotConstantLineEditDialog.ui \
Traces/eyediagrameditdialog.ui \
Traces/smithchartdialog.ui \ Traces/smithchartdialog.ui \
Traces/polarchartdialog.ui \ Traces/polarchartdialog.ui \
Traces/tracecsvexport.ui \ Traces/tracecsvexport.ui \

656
Software/PC_Application/LibreVNA-GUI/Tools/eyediagramdialog.cpp
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@ -1,656 +0,0 @@
#include "eyediagramdialog.h"
#include "ui_eyediagramdialog.h"
#include "Util/prbs.h"
#include "Traces/Math/tdr.h"
#include "Util/util.h"
#include "preferences.h"
#include "Traces/fftcomplex.h"
#include "Traces/traceaxis.h"
#include "unit.h"
#include <random>
#include <thread>
#include <chrono>
#include <QPainter>
using namespace std::chrono_literals;
EyeDiagramDialog::EyeDiagramDialog(TraceModel &model) :
QDialog(nullptr),
ui(new Ui::EyeDiagramDialog)
{
ui->setupUi(this);
setAttribute(Qt::WA_DeleteOnClose);
workingBuffer = &eyeBuffer[0];
finishedBuffer = &eyeBuffer[1];
updating = false;
firstUpdate = true;
trace = nullptr;
tdr = new Math::TDR();
ui->update->setEnabled(false);
ui->datarate->setUnit("bps");
ui->datarate->setPrefixes(" kMG");
ui->datarate->setPrecision(3);
ui->risetime->setUnit("s");
ui->risetime->setPrefixes("pnum ");
ui->risetime->setPrecision(3);
ui->falltime->setUnit("s");
ui->falltime->setPrefixes("pnum ");
ui->falltime->setPrecision(3);
ui->highLevel->setUnit("V");
ui->highLevel->setPrefixes("m ");
ui->highLevel->setPrecision(3);
ui->lowLevel->setUnit("V");
ui->lowLevel->setPrefixes("m ");
ui->lowLevel->setPrecision(3);
ui->noise->setUnit("V");
ui->noise->setPrefixes("um ");
ui->noise->setPrecision(3);
ui->jitter->setUnit("s");
ui->jitter->setPrefixes("pnum ");
ui->jitter->setPrecision(3);
ui->datarate->setValue(100000000);
ui->risetime->setValue(0.000000001);
ui->falltime->setValue(0.000000001);
ui->highLevel->setValue(1);
ui->lowLevel->setValue(0);
ui->noise->setValue(0.01);
ui->jitter->setValue(0.0000000001);
ui->displayedCycles->setValue(200);
ui->widget->setDialog(this);
connect(this, &EyeDiagramDialog::calculationStatus, ui->status, &QLabel::setText, Qt::QueuedConnection);
connect(ui->update, &QPushButton::clicked, this, &EyeDiagramDialog::triggerUpdate);
connect(this, &EyeDiagramDialog::updateDone, ui->widget, qOverload<>(&QWidget::update));
connect(ui->traceSelector, qOverload<int>(&QComboBox::currentIndexChanged), [=](){
trace = qvariant_cast<Trace*>(ui->traceSelector->itemData(ui->traceSelector->currentIndex()));
tdr->assignInput(trace);
ui->update->setEnabled(true);
});
connect(tdr, &Math::TDR::outputSamplesChanged, [=](){
if(ui->updateOnTraceChange->isChecked() || firstUpdate) {
triggerUpdate();
firstUpdate = false;
}
});
// find applicable traces
for(auto t : model.getTraces()) {
if(t->getDataType() != Trace::DataType::Frequency) {
// wrong domain
continue;
}
if(t->isReflection()) {
// can't work with reflection measurements
continue;
}
if(t->numSamples() < 100) {
// not enough samples
continue;
}
auto start = t->getSample(0).x;
auto stop = t->getSample(t->numSamples() - 1).x;
if(stop - start < start * 100) {
// span/start is not suitable for step response TDR
continue;
}
// can use this trace
ui->traceSelector->addItem(t->name(), QVariant::fromValue<Trace*>(t));
}
}
EyeDiagramDialog::~EyeDiagramDialog()
{
while(updating) {
std::this_thread::sleep_for(20ms);
}
delete tdr;
delete ui;
}
unsigned int EyeDiagramDialog::getCalculatedPixelsX()
{
return finishedBuffer->size();
}
unsigned int EyeDiagramDialog::getCalculatedPixelsY()
{
if(getCalculatedPixelsX() > 0) {
return (*finishedBuffer)[0].size();
} else {
return 0;
}
}
double EyeDiagramDialog::getIntensity(unsigned int x, unsigned int y)
{
if(finishedBuffer->size() > x) {
if((*finishedBuffer)[x].size() > y) {
return (*finishedBuffer)[x][y];
}
}
return std::numeric_limits<double>::quiet_NaN();
}
double EyeDiagramDialog::displayedTime()
{
return 2 * 1.0/ui->datarate->value();
}
double EyeDiagramDialog::minGraphVoltage()
{
auto highlevel = ui->highLevel->value();
auto lowlevel = ui->lowLevel->value();
auto eyeRange = highlevel - lowlevel;
return lowlevel - eyeRange * yOverrange;
}
double EyeDiagramDialog::maxGraphVoltage()
{
auto highlevel = ui->highLevel->value();
auto lowlevel = ui->lowLevel->value();
auto eyeRange = highlevel - lowlevel;
return highlevel + eyeRange * yOverrange;
}
bool EyeDiagramDialog::triggerUpdate()
{
update(ui->widget->eyeWidth(), ui->widget->eyeHeight());
}
bool EyeDiagramDialog::update(unsigned int width, unsigned int height)
{
if(updating) {
// already updating, can't start again
return false;
}
updating = true;
new std::thread(&EyeDiagramDialog::updateThread, this, width, height);
}
void EyeDiagramDialog::updateThread(unsigned int width, unsigned int height)
{
emit calculationStatus("Starting calculation...");
if(!trace) {
emit calculationStatus("No trace assigned");
updating = false;
return;
}
qDebug() << "Starting eye diagram calculation";
auto datarate = ui->datarate->value();
auto highlevel = ui->highLevel->value();
auto lowlevel = ui->lowLevel->value();
auto risetime = ui->risetime->value();
auto falltime = ui->falltime->value();
auto noise = ui->noise->value();
auto jitter = ui->jitter->value();
bool linearEdge = ui->fallrisetype->currentIndex() == 0;
unsigned int patternbits = ui->patternLength->currentIndex() + 2;
unsigned int cycles = ui->displayedCycles->value() + 1; // first cycle will not be displayed
// sanity check values
if(datarate >= trace->getSample(trace->numSamples() - 1).x) {
emit calculationStatus("Data rate too high");
updating = false;
return;
}
if(datarate <= 0) {
emit calculationStatus("Data rate too low");
updating = false;
return;
}
if(risetime > 0.3 * 1.0 / datarate) {
emit calculationStatus("Rise time too high");
updating = false;
return;
}
if(falltime > 0.3 * 1.0 / datarate) {
emit calculationStatus("Fall time too high");
updating = false;
return;
}
if(jitter > 0.3 * 1.0 / datarate) {
emit calculationStatus("Jitter too high");
updating = false;
return;
}
qDebug() << "Eye calculation: input values okay";
// resize working buffer
workingBuffer->clear();
workingBuffer->resize(width);
for(auto& y : *workingBuffer) {
y.resize(height, 0.0);
}
emit calculationStatus("Generating PRBS sequence...");
// calculate timestep
double timestep = displayedTime() / (width);
auto prbs = new PRBS(patternbits);
bool currentBit = prbs->next();
bool nextBit = prbs->next();
// initialize random generator
std::random_device rd1;
std::mt19937 mt_noise(rd1());
std::normal_distribution<> dist_noise(0, noise);
std::random_device rd2;
std::mt19937 mt_jitter(rd2());
std::normal_distribution<> dist_jitter(0, jitter);
// reserve vector for input data
std::vector<std::complex<double>> inVec(width * cycles, 0.0);
unsigned int bitcnt = 1;
double transitionTime = -10; // assume that we start with a settled input, last transition was "long" ago
for(unsigned int i=0;i<inVec.size();i++) {
double time = i*timestep;
double voltage;
if(time >= transitionTime) {
// currently within a bit transition
double edgeTime = 0;
double expTimeConstant;
if(!currentBit && nextBit) {
edgeTime = risetime;
} else if(currentBit && !nextBit) {
edgeTime = falltime;
}
if(linearEdge) {
// edge is modeled as linear rise/fall
// increase slightly to account for typical 10/90% fall/rise time
edgeTime *= 1.25;
} else {
// edge is modeled as exponential rise/fall. Adjust time constant to match
// selected rise/fall time (with 10-90% signal rise/fall within specified time)
expTimeConstant = edgeTime / 2.197224577;
edgeTime = 6 * expTimeConstant; // after six time constants, 99.7% of signal movement has happened
}
if(time >= transitionTime + edgeTime) {
// bit transition settled
voltage = nextBit ? highlevel : lowlevel;
// move on to the next bit
currentBit = nextBit;
nextBit = prbs->next();
transitionTime = bitcnt * 1.0 / datarate + dist_jitter(mt_jitter);
bitcnt++;
} else {
// still within rise or fall time
double timeSinceEdge = time - transitionTime;
double from = currentBit ? highlevel : lowlevel;
double to = nextBit ? highlevel : lowlevel;
if(linearEdge) {
double edgeRatio = timeSinceEdge / edgeTime;
voltage = from * (1.0 - edgeRatio) + to * edgeRatio;
} else {
voltage = from + (1.0 - exp(-timeSinceEdge/expTimeConstant)) * (to - from);
}
}
} else {
// still before the next edge
voltage = currentBit ? highlevel : lowlevel;
}
voltage += dist_noise(mt_noise);
inVec[i] = voltage;
}
// input voltage vector fully assembled
qDebug() << "Eye calculation: input data generated";
emit calculationStatus("Extracting impulse response...");
// calculate impulse response of trace
double eyeTimeShift = 0;
std::vector<std::complex<double>> impulseVec;
// determine how long the impulse response is
auto samples = tdr->numSamples();
if(samples == 0) {
// TDR calculation not yet done, unable to update
updating = false;
emit calculationStatus("No time-domain data from trace");
return;
}
auto length = tdr->getSample(samples - 1).x;
// determine average delay
auto total_step = tdr->getStepResponse(samples - 1);
for(unsigned int i=0;i<samples;i++) {
auto step = tdr->getStepResponse(i);
if(abs(total_step - step) <= abs(step)) {
// mid point reached
eyeTimeShift = tdr->getSample(i).x;
break;
}
}
unsigned long convolutedSize = length / timestep;
if(convolutedSize > inVec.size()) {
// impulse response is longer than what we display, truncate
convolutedSize = inVec.size();
}
impulseVec.resize(convolutedSize);
/*
* we can't use the impulse response directly because we most likely need samples inbetween
* the calculated values. Interpolation is available but if our sample spacing here is much
* wider than the impulse response data, we might miss peaks (or severely miscalculate their
* amplitude.
* Instead, the step response is interpolated and the impulse response determined by deriving
* it from the interpolated step response data. As the step response is the integrated imulse
* response data, we can't miss narrow peaks that way.
*/
double lastStepResponse = 0.0;
for(unsigned long i=0;i<convolutedSize;i++) {
auto x = i*timestep;
auto step = tdr->getInterpolatedStepResponse(x);
impulseVec[i] = step - lastStepResponse;
lastStepResponse = step;
}
eyeTimeShift += (risetime + falltime) * 1.25 / 4;
eyeTimeShift += 0.5 / datarate;
int eyeXshift = eyeTimeShift / timestep;
qDebug() << "Eye calculation: TDR calculation done";
emit calculationStatus("Performing convolution...");
unsigned int highestIntensity = 0;
qDebug() << "Convolve via FFT start";
std::vector<std::complex<double>> outVec;
impulseVec.resize(inVec.size(), 0.0);
outVec.resize(inVec.size());
Fft::convolve(inVec, impulseVec, outVec);
qDebug() << "Convolve via FFT stop";
auto addLine = [&](int x0, int y0, int x1, int y1, bool skipFirst = true) {
bool first = true;
auto putpixel = [&](int x, int y) {
if(skipFirst && first) {
first = false;
return;
}
if(x < 0 || x >= width || y < 0 || y >= height) {
return;
}
auto &bin = (*workingBuffer)[x][y];
bin++;
if(bin > highestIntensity) {
highestIntensity = bin;
}
};
int dx = abs (x1 - x0), sx = x0 < x1 ? 1 : -1;
int dy = -abs (y1 - y0), sy = y0 < y1 ? 1 : -1;
int err = dx + dy, e2; /* error value e_xy */
for (;;){ /* loop */
putpixel (x0,y0);
if (x0 == x1 && y0 == y1) break;
e2 = 2 * err;
if (e2 >= dy) { err += dy; x0 += sx; } /* e_xy+e_x > 0 */
if (e2 <= dx) { err += dx; y0 += sy; } /* e_xy+e_y < 0 */
}
};
emit calculationStatus("Creating intensity bitmap...");
// got the input data and the convolution data, calculate output
int lastyBin;
for(unsigned int i=width;i<inVec.size();i++) {
double voltage = outVec[i].real();
int yBin = Util::Scale<double>(voltage, minGraphVoltage(), maxGraphVoltage(), height-1, 0);
// increment pixel bin
if(yBin < 0) {
yBin = 0;
} else if(yBin >= height) {
yBin = height - 1;
}
auto xlast = (i-1-eyeXshift)%width;
auto xnow = (i-eyeXshift)%width;
if(xnow > xlast && i > width) {
addLine(xlast, lastyBin, xnow, yBin, xlast > 0);
}
lastyBin = yBin;
}
qDebug() << "Eye calculation: Convolution done";
// normalize intensity
for(auto &y : *workingBuffer) {
for(auto &v : y) {
v /= highestIntensity;
}
}
// switch buffers
auto buf = finishedBuffer;
finishedBuffer = workingBuffer;
workingBuffer = buf;
updating = false;
emit calculationStatus("Eye calculation complete");
emit updateDone();
}
EyeDiagramPlot::EyeDiagramPlot(QDialog *dialog)
{
Q_UNUSED(dialog)
}
void EyeDiagramPlot::setDialog(EyeDiagramDialog *dialog)
{
this->dialog = dialog;
}
unsigned int EyeDiagramPlot::eyeWidth()
{
return width() - leftSpace() - rightSpace();
}
unsigned int EyeDiagramPlot::eyeHeight()
{
return height() - topSpace() - bottomSpace();
}
unsigned int EyeDiagramPlot::leftSpace()
{
auto &pref = Preferences::getInstance();
return pref.Graphs.fontSizeAxis * 5.5;
}
unsigned int EyeDiagramPlot::bottomSpace()
{
auto &pref = Preferences::getInstance();
return pref.Graphs.fontSizeAxis * 3;
}
void EyeDiagramPlot::paintEvent(QPaintEvent *event)
{
if(!dialog) {
return;
}
auto &pref = Preferences::getInstance();
int plotAreaLeft = leftSpace();
int plotAreaWidth = width() - leftSpace() - rightSpace();
int plotAreaTop = topSpace();
int plotAreaHeight = height() - topSpace() - bottomSpace();
QPainter p(this);
p.setBackground(QBrush(pref.Graphs.Color.background));
p.fillRect(0, 0, width(), height(), QBrush(pref.Graphs.Color.background));
auto pen = QPen(pref.Graphs.Color.axis, 0);
pen.setCosmetic(true);
p.setPen(pen);
auto plotRect = QRect(plotAreaLeft, plotAreaTop, plotAreaWidth + 1, plotAreaHeight + 1);
p.drawRect(plotRect);
// Y axis
QString labelY = "Voltage";
auto font = p.font();
font.setPixelSize(pref.Graphs.fontSizeAxis);
p.setFont(font);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
p.save();
p.translate(0, height()-bottomSpace());
p.rotate(-90);
p.drawText(QRect(0, 0, height()-bottomSpace(), pref.Graphs.fontSizeAxis*1.5), Qt::AlignHCenter, labelY);
p.restore();
XAxis axis;
axis.set(XAxis::Type::Time, false, true, dialog->minGraphVoltage(), dialog->maxGraphVoltage(), 10);
// draw ticks
if(axis.getTicks().size() > 0) {
// this only works for evenly distributed ticks:
auto max = qMax(abs(axis.getTicks().front()), abs(axis.getTicks().back()));
double step;
if(axis.getTicks().size() >= 2) {
step = abs(axis.getTicks()[0] - axis.getTicks()[1]);
} else {
// only one tick, set arbitrary number of digits
step = max / 1000;
}
int significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
for(unsigned int j = 0; j < axis.getTicks().size(); j++) {
auto yCoord = axis.transform(axis.getTicks()[j], plotAreaTop + plotAreaHeight, plotAreaTop);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
// draw tickmark on axis
auto tickStart = plotAreaLeft;
auto tickLen = -2;
p.drawLine(tickStart, yCoord, tickStart + tickLen, yCoord);
QString unit = "";
QString prefix = " ";
if(pref.Graphs.showUnits) {
unit = "V";
prefix = "um ";
}
auto tickValue = Unit::ToString(axis.getTicks()[j], unit, prefix, significantDigits);
p.drawText(QRectF(0, yCoord - pref.Graphs.fontSizeAxis/2 - 2, tickStart + 2 * tickLen, pref.Graphs.fontSizeAxis), Qt::AlignRight, tickValue);
// tick lines
if(yCoord == plotAreaTop || yCoord == plotAreaTop + plotAreaHeight) {
// skip tick lines right on the plot borders
continue;
}
// only draw tick lines for primary axis
if (pref.Graphs.Color.Ticks.Background.enabled) {
if (j%2)
{
int yCoordTop = axis.transform(axis.getTicks()[j], plotAreaTop, plotAreaTop + plotAreaHeight);
int yCoordBot = axis.transform(axis.getTicks()[j-1], plotAreaTop, plotAreaTop + plotAreaHeight);
if(yCoordTop > yCoordBot) {
auto buf = yCoordBot;
yCoordBot = yCoordTop;
yCoordTop = buf;
}
p.setBrush(pref.Graphs.Color.Ticks.Background.background);
p.setPen(pref.Graphs.Color.Ticks.Background.background);
auto rect = QRect(plotAreaLeft+1, yCoordTop+1, plotAreaWidth-2, yCoordBot-yCoordTop-2);
p.drawRect(rect);
}
}
p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
p.drawLine(plotAreaLeft, yCoord, plotAreaLeft + plotAreaWidth, yCoord);
}
}
// use the XY-plot axes for tick calculation
axis.set(XAxis::Type::Time, false, true, 0, dialog->displayedTime(), 10);
// X axis name
p.drawText(QRect(plotAreaLeft, height()-pref.Graphs.fontSizeAxis*1.5, plotAreaWidth, pref.Graphs.fontSizeAxis*1.5), Qt::AlignHCenter, axis.TypeToName());
// draw X axis ticks
if(axis.getTicks().size() >= 1) {
// draw X ticks
int significantDigits;
// this only works for evenly distributed ticks:
auto max = qMax(abs(axis.getTicks().front()), abs(axis.getTicks().back()));
double step;
if(axis.getTicks().size() >= 2) {
step = abs(axis.getTicks()[0] - axis.getTicks()[1]);
} else {
// only one tick, set arbitrary number of digits
step = max / 1000;
}
significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
QString prefixes = "fpnum kMG";
QString unit = "";
if(pref.Graphs.showUnits) {
unit = axis.Unit();
}
QString commonPrefix = QString();
int lastTickLabelEnd = 0;
for(auto t : axis.getTicks()) {
auto xCoord = axis.transform(t, plotAreaLeft, plotAreaLeft + plotAreaWidth);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
p.drawLine(xCoord, plotAreaTop + plotAreaHeight, xCoord, plotAreaTop + plotAreaHeight + 2);
if(xCoord != plotAreaLeft && xCoord != plotAreaLeft + plotAreaWidth) {
p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
p.drawLine(xCoord, plotAreaTop, xCoord, plotAreaTop + plotAreaHeight);
}
if(xCoord - 40 <= lastTickLabelEnd) {
// would overlap previous tick label, skip
continue;
}
auto tickValue = Unit::ToString(t, unit, prefixes, significantDigits);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
QRect bounding;
p.drawText(QRect(xCoord - pref.Graphs.fontSizeAxis*2, plotAreaTop + plotAreaHeight + 5, pref.Graphs.fontSizeAxis*4,
pref.Graphs.fontSizeAxis), Qt::AlignHCenter, tickValue, &bounding);
lastTickLabelEnd = bounding.x() + bounding.width();
}
}
if(dialog->getCalculatedPixelsX() == 0 || dialog->getCalculatedPixelsY() == 0) {
// no eye data
return;
}
// eye data is normally calculated to match the displayed pixels in this widget.
// But the window size mighe have been adjusted since the last eye calculation.
// Use scale factors until the eye data is updated
double xScale = (double) plotAreaWidth / dialog->getCalculatedPixelsX();
double yScale = (double) plotAreaHeight / dialog->getCalculatedPixelsY();
for(unsigned int i=0;i<plotAreaWidth;i++) {
for(unsigned int j=0;j<plotAreaHeight;j++) {
auto value = dialog->getIntensity(i / xScale, j / yScale);
if(isnan(value) || value == 0) {
// do not paint, just leave the background shining through
continue;
}
auto pen = QPen(Util::getIntensityGradeColor(value));
pen.setCosmetic(true);
p.setPen(pen);
p.drawPoint(plotAreaLeft + i + 1, plotAreaTop + j + 1);
}
}
}

82
Software/PC_Application/LibreVNA-GUI/Tools/eyediagramdialog.h
View File

@ -1,82 +0,0 @@
#ifndef EYEDIAGRAMDIALOG_H
#define EYEDIAGRAMDIALOG_H
#include "Traces/tracemodel.h"
#include "Traces/Math/tdr.h"
#include <vector>
#include <QDialog>
namespace Ui {
class EyeDiagramDialog;
}
class EyeDiagramDialog;
class EyeDiagramPlot : public QWidget
{
Q_OBJECT
public:
EyeDiagramPlot(QDialog *dialog);
void setDialog(EyeDiagramDialog *dialog);
unsigned int eyeWidth();
unsigned int eyeHeight();
private:
unsigned int leftSpace();
unsigned int rightSpace() {return 10;}
unsigned int topSpace() {return 10;}
unsigned int bottomSpace();
void paintEvent(QPaintEvent *event) override;
EyeDiagramDialog *dialog;
};
class EyeDiagramDialog : public QDialog
{
Q_OBJECT
public:
explicit EyeDiagramDialog(TraceModel &model);
~EyeDiagramDialog();
unsigned int getCalculatedPixelsX();
unsigned int getCalculatedPixelsY();
double getIntensity(unsigned int x, unsigned int y);
double displayedTime();
double minGraphVoltage();
double maxGraphVoltage();
public slots:
bool triggerUpdate();
bool update(unsigned int width, unsigned int height);
signals:
void updateDone();
private:
signals:
void calculationStatus(QString s);
private:
static constexpr double yOverrange = 0.2;
void updateThread(unsigned int width, unsigned int height);
Ui::EyeDiagramDialog *ui;
Trace *trace;
std::vector<std::vector<double>> eyeBuffer[2];
std::vector<std::vector<double>> *workingBuffer;
std::vector<std::vector<double>> *finishedBuffer;
Math::TDR *tdr;
bool updating;
bool firstUpdate;
};
#endif // EYEDIAGRAMDIALOG_H

285
Software/PC_Application/LibreVNA-GUI/Tools/eyediagramdialog.ui
View File

@ -1,285 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>EyeDiagramDialog</class>
<widget class="QDialog" name="EyeDiagramDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>897</width>
<height>575</height>
</rect>
</property>
<property name="windowTitle">
<string>Eye Diagram</string>
</property>
<property name="modal">
<bool>true</bool>
</property>
<layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1">
<item>
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<widget class="QGroupBox" name="groupBox_3">
<property name="title">
<string>Trace Selection</string>
</property>
<layout class="QFormLayout" name="formLayout_3">
<item row="0" column="0">
<widget class="QLabel" name="label_11">
<property name="text">
<string>Transmission line trace:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QComboBox" name="traceSelector"/>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox">
<property name="title">
<string>Input Datastream Configuration</string>
</property>
<layout class="QFormLayout" name="formLayout">
<item row="0" column="0">
<widget class="QLabel" name="label">
<property name="text">
<string>Data rate:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="SIUnitEdit" name="datarate"/>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_2">
<property name="text">
<string>Rise time:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="SIUnitEdit" name="risetime"/>
</item>
<item row="2" column="0">
<widget class="QLabel" name="label_3">
<property name="text">
<string>Fall time:</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="SIUnitEdit" name="falltime"/>
</item>
<item row="4" column="0">
<widget class="QLabel" name="label_4">
<property name="text">
<string>High level:</string>
</property>
</widget>
</item>
<item row="4" column="1">
<widget class="SIUnitEdit" name="highLevel"/>
</item>
<item row="5" column="0">
<widget class="QLabel" name="label_5">
<property name="text">
<string>Low level:</string>
</property>
</widget>
</item>
<item row="5" column="1">
<widget class="SIUnitEdit" name="lowLevel"/>
</item>
<item row="6" column="0">
<widget class="QLabel" name="label_6">
<property name="text">
<string>Noise (RMS):</string>
</property>
</widget>
</item>
<item row="6" column="1">
<widget class="SIUnitEdit" name="noise"/>
</item>
<item row="7" column="0">
<widget class="QLabel" name="label_7">
<property name="text">
<string>Jitter (RMS):</string>
</property>
</widget>
</item>
<item row="7" column="1">
<widget class="SIUnitEdit" name="jitter"/>
</item>
<item row="8" column="0">
<widget class="QLabel" name="label_8">
<property name="text">
<string>Pattern length:</string>
</property>
</widget>
</item>
<item row="8" column="1">
<widget class="QComboBox" name="patternLength">
<property name="currentIndex">
<number>7</number>
</property>
<item>
<property name="text">
<string>3</string>
</property>
</item>
<item>
<property name="text">
<string>7</string>
</property>
</item>
<item>
<property name="text">
<string>15</string>
</property>
</item>
<item>
<property name="text">
<string>31</string>
</property>
</item>
<item>
<property name="text">
<string>63</string>
</property>
</item>
<item>
<property name="text">
<string>127</string>
</property>
</item>
<item>
<property name="text">
<string>255</string>
</property>
</item>
<item>
<property name="text">
<string>511</string>
</property>
</item>
<item>
<property name="text">
<string>1023</string>
</property>
</item>
<item>
<property name="text">
<string>2047</string>
</property>
</item>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="label_12">
<property name="text">
<string>Rise/Fall type:</string>
</property>
</widget>
</item>
<item row="3" column="1">
<widget class="QComboBox" name="fallrisetype">
<item>
<property name="text">
<string>Linear</string>
</property>
</item>
<item>
<property name="text">
<string>Exponential</string>
</property>
</item>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox_2">
<property name="title">
<string>Eye Calculation</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QFormLayout" name="formLayout_2">
<item row="0" column="0">
<widget class="QLabel" name="label_9">
<property name="text">
<string>Displayed cycles:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QSpinBox" name="displayedCycles">
<property name="minimum">
<number>1</number>
</property>
<property name="maximum">
<number>1000</number>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_10">
<property name="text">
<string>Update when trace changes:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QCheckBox" name="updateOnTraceChange">
<property name="text">
<string/>
</property>
</widget>
</item>
</layout>
</item>
<item>
<widget class="QPushButton" name="update">
<property name="text">
<string>Update</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="status">
<property name="text">
<string/>
</property>
</widget>
</item>
</layout>
</widget>
</item>
</layout>
</item>
<item>
<widget class="EyeDiagramPlot" name="widget" native="true"/>
</item>
</layout>
</widget>
<customwidgets>
<customwidget>
<class>SIUnitEdit</class>
<extends>QLineEdit</extends>
<header>CustomWidgets/siunitedit.h</header>
</customwidget>
<customwidget>
<class>EyeDiagramPlot</class>
<extends>QWidget</extends>
<header>Tools/eyediagramdialog.h</header>
<container>1</container>
</customwidget>
</customwidgets>
<resources/>
<connections/>
</ui>

2
Software/PC_Application/LibreVNA-GUI/Traces/Math/tracemath.cpp
View File

@ -121,7 +121,7 @@ double TraceMath::getInterpolatedStepResponse(double x)
auto it = lower_bound(data.begin(), data.end(), x, [](const Data &lhs, const double x) -> bool { auto it = lower_bound(data.begin(), data.end(), x, [](const Data &lhs, const double x) -> bool {
return lhs.x < x; return lhs.x < x;
}); });
if(it->x == x) { if(it->x == x || it == data.begin()) {
ret = stepResponse[it - data.begin()]; ret = stepResponse[it - data.begin()];
} else { } else {
// no exact match, needs to interpolate // no exact match, needs to interpolate

482
Software/PC_Application/LibreVNA-GUI/Traces/eyediagrameditdialog.ui Normal file
View File

@ -0,0 +1,482 @@
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>EyeDiagramEditDialog</class>
<widget class="QDialog" name="EyeDiagramEditDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>844</width>
<height>429</height>
</rect>
</property>
<property name="windowTitle">
<string>Eye Diagram Settings</string>
</property>
<property name="modal">
<bool>true</bool>
</property>
<layout class="QVBoxLayout" name="verticalLayout_5">
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<widget class="QGroupBox" name="groupBox_3">
<property name="title">
<string>Axes Configuration</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout_3">
<item>
<widget class="QGroupBox" name="groupBox_4">
<property name="title">
<string>X Axis</string>
</property>
<layout class="QFormLayout" name="formLayout_3">
<item row="0" column="0">
<widget class="QLabel" name="label_19">
<property name="text">
<string>Range:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QCheckBox" name="Xauto">
<property name="text">
<string>Auto</string>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_20">
<property name="text">
<string>Maximum:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="SIUnitEdit" name="Xmax"/>
</item>
<item row="2" column="0">
<widget class="QLabel" name="label_21">
<property name="text">
<string>Minimum:</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="SIUnitEdit" name="Xmin"/>
</item>
<item row="3" column="0">
<widget class="QLabel" name="label_22">
<property name="text">
<string>Divisions:</string>
</property>
</widget>
</item>
<item row="3" column="1">
<widget class="SIUnitEdit" name="Xdivs"/>
</item>
</layout>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox_5">
<property name="title">
<string>Y Axis</string>
</property>
<layout class="QFormLayout" name="formLayout_5">
<item row="0" column="0">
<widget class="QLabel" name="label_15">
<property name="text">
<string>Range:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QCheckBox" name="Yauto">
<property name="text">
<string>Auto</string>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_16">
<property name="text">
<string>Maximum:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="SIUnitEdit" name="Ymax"/>
</item>
<item row="2" column="0">
<widget class="QLabel" name="label_17">
<property name="text">
<string>Minimum:</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="SIUnitEdit" name="Ymin"/>
</item>
<item row="3" column="0">
<widget class="QLabel" name="label_18">
<property name="text">
<string>Divisions:</string>
</property>
</widget>
</item>
<item row="3" column="1">
<widget class="SIUnitEdit" name="Ydivs"/>
</item>
</layout>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<spacer name="verticalSpacer_3">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<widget class="QGroupBox" name="groupBox">
<property name="title">
<string>Input Datastream Configuration</string>
</property>
<layout class="QFormLayout" name="formLayout">
<item row="0" column="0">
<widget class="QLabel" name="label">
<property name="text">
<string>Data rate:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="SIUnitEdit" name="datarate"/>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_2">
<property name="text">
<string>Rise time:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="SIUnitEdit" name="risetime"/>
</item>
<item row="2" column="0">
<widget class="QLabel" name="label_3">
<property name="text">
<string>Fall time:</string>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="SIUnitEdit" name="falltime"/>
</item>
<item row="4" column="0">
<widget class="QLabel" name="label_4">
<property name="text">
<string>High level:</string>
</property>
</widget>
</item>
<item row="4" column="1">
<widget class="SIUnitEdit" name="highLevel"/>
</item>
<item row="5" column="0">
<widget class="QLabel" name="label_5">
<property name="text">
<string>Low level:</string>
</property>
</widget>
</item>
<item row="5" column="1">
<widget class="SIUnitEdit" name="lowLevel"/>
</item>
<item row="7" column="0">
<widget class="QLabel" name="label_6">
<property name="text">
<string>Noise (RMS):</string>
</property>
</widget>
</item>
<item row="7" column="1">
<widget class="SIUnitEdit" name="noise"/>
</item>
<item row="8" column="0">
<widget class="QLabel" name="label_7">
<property name="text">
<string>Jitter (RMS):</string>
</property>
</widget>
</item>
<item row="8" column="1">
<widget class="SIUnitEdit" name="jitter"/>
</item>
<item row="9" column="0">
<widget class="QLabel" name="label_8">
<property name="text">
<string>Pattern length:</string>
</property>
</widget>
</item>
<item row="9" column="1">
<widget class="QComboBox" name="patternLength">
<property name="currentIndex">
<number>7</number>
</property>
<item>
<property name="text">
<string>3</string>
</property>
</item>
<item>
<property name="text">
<string>7</string>
</property>
</item>
<item>
<property name="text">
<string>15</string>
</property>
</item>
<item>
<property name="text">
<string>31</string>
</property>
</item>
<item>
<property name="text">
<string>63</string>
</property>
</item>
<item>
<property name="text">
<string>127</string>
</property>
</item>
<item>
<property name="text">
<string>255</string>
</property>
</item>
<item>
<property name="text">
<string>511</string>
</property>
</item>
<item>
<property name="text">
<string>1023</string>
</property>
</item>
<item>
<property name="text">
<string>2047</string>
</property>
</item>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="label_12">
<property name="text">
<string>Rise/Fall type:</string>
</property>
</widget>
</item>
<item row="3" column="1">
<widget class="QComboBox" name="fallrisetype">
<item>
<property name="text">
<string>Linear</string>
</property>
</item>
<item>
<property name="text">
<string>Exponential</string>
</property>
</item>
</widget>
</item>
<item row="6" column="0">
<widget class="QLabel" name="label_11">
<property name="text">
<string>Signal levels:</string>
</property>
</widget>
</item>
<item row="6" column="1">
<widget class="QComboBox" name="signalLevels">
<item>
<property name="text">
<string>2</string>
</property>
</item>
<item>
<property name="text">
<string>4</string>
</property>
</item>
<item>
<property name="text">
<string>8</string>
</property>
</item>
<item>
<property name="text">
<string>16</string>
</property>
</item>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<spacer name="verticalSpacer_2">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<layout class="QVBoxLayout" name="verticalLayout_4">
<item>
<widget class="QGroupBox" name="groupBox_2">
<property name="title">
<string>Eye Calculation</string>
</property>
<layout class="QFormLayout" name="formLayout_2">
<item row="0" column="0">
<widget class="QLabel" name="label_9">
<property name="text">
<string>Displayed cycles:</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QSpinBox" name="displayedCycles">
<property name="minimum">
<number>1</number>
</property>
<property name="maximum">
<number>1000</number>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_13">
<property name="text">
<string>Points per cycle:</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QSpinBox" name="pointsPerCycle">
<property name="minimum">
<number>20</number>
</property>
<property name="maximum">
<number>1000</number>
</property>
</widget>
</item>
</layout>
</widget>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
</layout>
</item>
<item>
<widget class="QDialogButtonBox" name="buttonBox">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="standardButtons">
<set>QDialogButtonBox::Apply|QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</item>
</layout>
</widget>
<customwidgets>
<customwidget>
<class>SIUnitEdit</class>
<extends>QLineEdit</extends>
<header>CustomWidgets/siunitedit.h</header>
</customwidget>
</customwidgets>
<resources/>
<connections>
<connection>
<sender>buttonBox</sender>
<signal>accepted()</signal>
<receiver>EyeDiagramEditDialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel">
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>buttonBox</sender>
<signal>rejected()</signal>
<receiver>EyeDiagramEditDialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel">
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>

938
Software/PC_Application/LibreVNA-GUI/Traces/eyediagramplot.cpp Normal file
View File

@ -0,0 +1,938 @@
#include "eyediagramplot.h"
#include "ui_eyediagrameditdialog.h"
#include "unit.h"
#include "Util/prbs.h"
#include "Util/util.h"
#include "fftcomplex.h"
#include "preferences.h"
#include "appwindow.h"
#include <random>
#include <thread>
#include <chrono>
#include <QFileDialog>
#include <QPainter>
#include <QPushButton>
using namespace std::chrono_literals;
EyeDiagramPlot::EyeDiagramPlot(TraceModel &model, QWidget *parent)
: TracePlot(model, parent),
trace(nullptr),
updating(false),
updateScheduled(false),
xSamples(200),
datarate(100000000),
highlevel(1.0),
lowlevel(0.0),
bitsPerSymbol(1),
risetime(0.000000001),
falltime(0.000000001),
noise(0.01),
jitter(0.0000000001),
linearEdge(true),
patternbits(9),
cycles(200)
{
plotAreaTop = 0;
plotAreaLeft = 0;
plotAreaWidth = 0;
plotAreaBottom = 0;
tdr = new Math::TDR;
calcData = &data[0];
displayData = &data[1];
xAxis.set(XAxis::Type::Time, false, true, 0, 0.000001, 1);
yAxis.set(YAxis::Type::Real, false, true, -1, 1, 1);
initializeTraceInfo();
connect(tdr, &Math::TDR::outputSamplesChanged, this, &EyeDiagramPlot::triggerUpdate);
replot();
}
EyeDiagramPlot::~EyeDiagramPlot()
{
while(updating) {
std::this_thread::sleep_for(20ms);
}
delete tdr;
}
void EyeDiagramPlot::enableTrace(Trace *t, bool enabled)
{
if(enabled) {
// only one trace at a time is allowed, disable all others
for(auto t : traces) {
if(t.second) {
enableTrace(t.first, false);
break;
}
}
}
TracePlot::enableTrace(t, enabled);
if(enabled) {
trace = t;
tdr->assignInput(trace);
} else {
if(trace) {
tdr->removeInput();
while(updating) {
std::this_thread::sleep_for(20ms);
}
displayData->clear();
calcData->clear();
}
trace = nullptr;
}
}
void EyeDiagramPlot::replot()
{
if(xAxis.getAutorange()) {
xAxis.set(xAxis.getType(), false, true, 0, calculatedTime(), 8);
}
if(yAxis.getAutorange()) {
yAxis.set(yAxis.getType(), false, true, minDisplayVoltage(), maxDisplayVoltage(), 8);
}
TracePlot::replot();
}
void EyeDiagramPlot::move(const QPoint &vect)
{
if(!xAxis.getLog()) {
// can only move axis in linear mode
// calculate amount of movement
double distance = xAxis.inverseTransform(vect.x(), 0, plotAreaWidth) - xAxis.getRangeMin();
xAxis.set(xAxis.getType(), false, false, xAxis.getRangeMin() - distance, xAxis.getRangeMax() - distance, xAxis.getRangeDiv());
}
if(!yAxis.getLog()) {
// can only move axis in linear mode
// calculate amount of movement
double distance = yAxis.inverseTransform(vect.y(), 0, plotAreaTop - plotAreaBottom) - yAxis.getRangeMin();
yAxis.set(yAxis.getType(), false, false, yAxis.getRangeMin() - distance, yAxis.getRangeMax() - distance, yAxis.getRangeDiv());
}
replot();
}
void EyeDiagramPlot::zoom(const QPoint &center, double factor, bool horizontally, bool vertically)
{
if(horizontally && !xAxis.getLog()) {
// can only zoom axis in linear mode
// calculate center point
double cp = xAxis.inverseTransform(center.x(), plotAreaLeft, plotAreaLeft + plotAreaWidth);
double min = ((xAxis.getRangeMin() - cp) * factor) + cp;
double max = ((xAxis.getRangeMax() - cp) * factor) + cp;
xAxis.set(xAxis.getType(), false, false, min, max, xAxis.getRangeDiv() * factor);
}
if(vertically) {
// can only move axis in linear mode
// calculate center point
double cp = yAxis.inverseTransform(center.y(), plotAreaBottom, plotAreaTop);
double min = ((yAxis.getRangeMin() - cp) * factor) + cp;
double max = ((yAxis.getRangeMax() - cp) * factor) + cp;
yAxis.set(yAxis.getType(), false, false, min, max, yAxis.getRangeDiv() * factor);
}
replot();
}
void EyeDiagramPlot::setAuto(bool horizontally, bool vertically)
{
if(horizontally) {
xAxis.set(xAxis.getType(), xAxis.getLog(), true, xAxis.getRangeMin(), xAxis.getRangeMax(), xAxis.getRangeDiv());
}
if(vertically) {
yAxis.set(yAxis.getType(), yAxis.getLog(), true, yAxis.getRangeMin(), yAxis.getRangeMax(), yAxis.getRangeDiv());
}
replot();
}
void EyeDiagramPlot::fromJSON(nlohmann::json j)
{
auto jX = j["XAxis"];
bool xAuto = jX.value("autorange", xAxis.getAutorange());
double xMin = jX.value("min", xAxis.getRangeMin());
double xMax = jX.value("max", xAxis.getRangeMax());
double xDivs = jX.value("div", xAxis.getRangeDiv());
xAxis.set(xAxis.getType(), false, xAuto, xMin, xMax, xDivs);
auto jY = j["YAxis"];
bool yAuto = jY.value("autorange", yAxis.getAutorange());
double yMin = jY.value("min", yAxis.getRangeMin());
double yMax = jY.value("max", yAxis.getRangeMax());
double yDivs = jY.value("div", yAxis.getRangeDiv());
yAxis.set(yAxis.getType(), false, yAuto, yMin, yMax, yDivs);
datarate = j.value("datarate", datarate);
risetime = j.value("risetime", risetime);
falltime = j.value("falltime", falltime);
linearEdge = j.value("linearEdge", linearEdge);
highlevel = j.value("highlevel", highlevel);
lowlevel = j.value("lowlevel", lowlevel);
bitsPerSymbol = j.value("bitPerSymbol", bitsPerSymbol);
noise = j.value("noise", noise);
jitter = j.value("jitter", jitter);
patternbits = j.value("patternBits", patternbits);
cycles = j.value("cycles", cycles);
xSamples = j.value("xSamples", xSamples);
for(unsigned int hash : j["traces"]) {
// attempt to find the traces with this hash
bool found = false;
for(auto t : model.getTraces()) {
if(t->toHash() == hash) {
enableTrace(t, true);
found = true;
break;
}
}
if(!found) {
qWarning() << "Unable to find trace with hash" << hash;
}
}
}
nlohmann::json EyeDiagramPlot::toJSON()
{
nlohmann::json j;
nlohmann::json jX;
jX["autorange"] = yAxis.getAutorange();
jX["min"] = xAxis.getRangeMin();
jX["max"] = xAxis.getRangeMax();
jX["div"] = xAxis.getRangeDiv();
j["XAxis"] = jX;
nlohmann::json jY;
jY["autorange"] = yAxis.getAutorange();
jY["min"] = yAxis.getRangeMin();
jY["max"] = yAxis.getRangeMax();
jY["div"] = yAxis.getRangeDiv();
j["YAxis"] = jY;
nlohmann::json jtraces;
for(auto t : traces) {
if(t.second) {
jtraces.push_back(t.first->toHash());
}
}
j["traces"] = jtraces;
j["datarate"] = datarate;
j["risetime"] = risetime;
j["falltime"] = falltime;
j["linearEdge"] = linearEdge;
j["highlevel"] = highlevel;
j["lowlevel"] = lowlevel;
j["bitPerSymbol"] = bitsPerSymbol;
j["noise"] = noise;
j["jitter"] = jitter;
j["patternBits"] = patternbits;
j["cycles"] = cycles;
j["xSamples"] = xSamples;
return j;
}
void EyeDiagramPlot::axisSetupDialog()
{
auto d = new QDialog(this);
d->setAttribute(Qt::WA_DeleteOnClose);
auto ui = new Ui::EyeDiagramEditDialog;
ui->setupUi(d);
ui->datarate->setUnit("bps");
ui->datarate->setPrefixes(" kMG");
ui->datarate->setPrecision(3);
ui->risetime->setUnit("s");
ui->risetime->setPrefixes("pnum ");
ui->risetime->setPrecision(3);
ui->falltime->setUnit("s");
ui->falltime->setPrefixes("pnum ");
ui->falltime->setPrecision(3);
ui->highLevel->setUnit("V");
ui->highLevel->setPrefixes("m ");
ui->highLevel->setPrecision(3);
ui->lowLevel->setUnit("V");
ui->lowLevel->setPrefixes("m ");
ui->lowLevel->setPrecision(3);
ui->noise->setUnit("V");
ui->noise->setPrefixes("um ");
ui->noise->setPrecision(3);
ui->jitter->setUnit("s");
ui->jitter->setPrefixes("pnum ");
ui->jitter->setPrecision(3);
ui->Xmin->setUnit("s");
ui->Xmin->setPrefixes("pnum ");
ui->Xmin->setPrecision(5);
ui->Xmax->setUnit("s");
ui->Xmax->setPrefixes("pnum ");
ui->Xmax->setPrecision(5);
ui->Xdivs->setUnit("s");
ui->Xdivs->setPrefixes("pnum ");
ui->Xdivs->setPrecision(3);
ui->Ymin->setUnit("V");
ui->Ymin->setPrefixes("um ");
ui->Ymin->setPrecision(4);
ui->Ymax->setUnit("V");
ui->Ymax->setPrefixes("um ");
ui->Ymax->setPrecision(4);
ui->Ydivs->setUnit("V");
ui->Ydivs->setPrefixes("um ");
ui->Ydivs->setPrecision(3);
// set initial values
ui->datarate->setValue(datarate);
ui->risetime->setValue(risetime);
ui->falltime->setValue(falltime);
ui->highLevel->setValue(highlevel);
ui->lowLevel->setValue(lowlevel);
ui->noise->setValue(noise);
ui->jitter->setValue(jitter);
ui->signalLevels->setCurrentIndex(bitsPerSymbol - 1);
ui->patternLength->setCurrentIndex(patternbits - 2);
ui->fallrisetype->setCurrentIndex(linearEdge ? 0 : 1);
ui->displayedCycles->setValue(cycles);
ui->pointsPerCycle->setValue(xSamples);
connect(ui->Xauto, &QCheckBox::toggled, [=](bool checked) {
ui->Xmin->setEnabled(!checked);
ui->Xmax->setEnabled(!checked);
ui->Xdivs->setEnabled(!checked);
});
ui->Xauto->setChecked(xAxis.getAutorange());
ui->Xmin->setValue(xAxis.getRangeMin());
ui->Xmax->setValue(xAxis.getRangeMax());
ui->Xdivs->setValue(xAxis.getRangeDiv());
connect(ui->Yauto, &QCheckBox::toggled, [=](bool checked) {
ui->Ymin->setEnabled(!checked);
ui->Ymax->setEnabled(!checked);
ui->Ydivs->setEnabled(!checked);
});
ui->Yauto->setChecked(yAxis.getAutorange());
ui->Ymin->setValue(yAxis.getRangeMin());
ui->Ymax->setValue(yAxis.getRangeMax());
ui->Ydivs->setValue(yAxis.getRangeDiv());
auto updateValues = [=](){
std::lock_guard<std::mutex> guard(calcMutex);
datarate = ui->datarate->value();
risetime = ui->risetime->value();
falltime = ui->falltime->value();
highlevel = ui->highLevel->value();
lowlevel = ui->lowLevel->value();
noise = ui->noise->value();
jitter = ui->jitter->value();
bitsPerSymbol = ui->signalLevels->currentIndex() + 1;
patternbits = ui->patternLength->currentIndex() + 2;
linearEdge = ui->fallrisetype->currentIndex() == 0;
cycles = ui->displayedCycles->value();
xSamples = ui->pointsPerCycle->value();
xAxis.set(xAxis.getType(), false, ui->Xauto->isChecked(), ui->Xmin->value(), ui->Xmax->value(), ui->Xdivs->value());
yAxis.set(yAxis.getType(), false, ui->Yauto->isChecked(), ui->Ymin->value(), ui->Ymax->value(), ui->Ydivs->value());
};
connect(ui->buttonBox->button(QDialogButtonBox::Ok), &QPushButton::clicked, [=](){
updateValues();
});
connect(ui->buttonBox->button(QDialogButtonBox::Apply), &QPushButton::clicked, [=](){
updateValues();
});
if(AppWindow::showGUI()) {
d->show();
}
}
void EyeDiagramPlot::updateContextMenu()
{
contextmenu->clear();
auto setup = new QAction("Setup...", contextmenu);
connect(setup, &QAction::triggered, this, &EyeDiagramPlot::axisSetupDialog);
contextmenu->addAction(setup);
contextmenu->addSeparator();
auto image = new QAction("Save image...", contextmenu);
contextmenu->addAction(image);
connect(image, &QAction::triggered, [=]() {
auto filename = QFileDialog::getSaveFileName(nullptr, "Save plot image", "", "PNG image files (*.png)", nullptr, QFileDialog::DontUseNativeDialog);
if(filename.isEmpty()) {
// aborted selection
return;
}
if(filename.endsWith(".png")) {
filename.chop(4);
}
filename += ".png";
grab().save(filename);
});
contextmenu->addSection("Traces");
// Populate context menu
for(auto t : orderedTraces()) {
if(!supported(t)) {
continue;
}
auto action = new QAction(t->name(), contextmenu);
action->setCheckable(true);
if(traces[t]) {
action->setChecked(true);
}
connect(action, &QAction::toggled, [=](bool active) {
enableTrace(t, active);
});
contextmenu->addAction(action);
}
finishContextMenu();
}
bool EyeDiagramPlot::positionWithinGraphArea(const QPoint &p)
{
return p.x() >= plotAreaLeft && p.x() <= plotAreaLeft + plotAreaWidth
&& p.y() >= plotAreaTop && p.y() <= plotAreaBottom;
}
void EyeDiagramPlot::draw(QPainter &p)
{
auto &pref = Preferences::getInstance();
auto w = p.window();
auto yAxisSpace = pref.Graphs.fontSizeAxis * 5.5;
auto xAxisSpace = pref.Graphs.fontSizeAxis * 3;
plotAreaLeft = yAxisSpace;
plotAreaWidth = w.width() - plotAreaLeft - 10;
plotAreaTop = 10;
plotAreaBottom = w.height() - xAxisSpace;
p.setBackground(QBrush(pref.Graphs.Color.background));
p.fillRect(0, 0, width(), height(), QBrush(pref.Graphs.Color.background));
auto pen = QPen(pref.Graphs.Color.axis, 0);
pen.setCosmetic(true);
p.setPen(pen);
auto plotRect = QRect(plotAreaLeft, plotAreaTop, plotAreaWidth + 1, plotAreaBottom - plotAreaTop + 1);
p.drawRect(plotRect);
// Y axis
QString labelY = "Voltage";
auto font = p.font();
font.setPixelSize(pref.Graphs.fontSizeAxis);
p.setFont(font);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
p.save();
p.translate(0, w.height()-xAxisSpace);
p.rotate(-90);
p.drawText(QRect(0, 0, w.height()-xAxisSpace, pref.Graphs.fontSizeAxis*1.5), Qt::AlignHCenter, labelY);
p.restore();
// draw ticks
if(yAxis.getTicks().size() > 0) {
// this only works for evenly distributed ticks:
auto max = qMax(abs(yAxis.getTicks().front()), abs(yAxis.getTicks().back()));
double step;
if(yAxis.getTicks().size() >= 2) {
step = abs(yAxis.getTicks()[0] - yAxis.getTicks()[1]);
} else {
// only one tick, set arbitrary number of digits
step = max / 1000;
}
int significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
for(unsigned int j = 0; j < yAxis.getTicks().size(); j++) {
auto yCoord = yAxis.transform(yAxis.getTicks()[j], plotAreaBottom, plotAreaTop);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
// draw tickmark on axis
auto tickStart = plotAreaLeft;
auto tickLen = -2;
p.drawLine(tickStart, yCoord, tickStart + tickLen, yCoord);
QString unit = "";
QString prefix = " ";
if(pref.Graphs.showUnits) {
unit = "V";
prefix = "um ";
}
auto tickValue = Unit::ToString(yAxis.getTicks()[j], unit, prefix, significantDigits);
p.drawText(QRectF(0, yCoord - pref.Graphs.fontSizeAxis/2 - 2, tickStart + 2 * tickLen, pref.Graphs.fontSizeAxis), Qt::AlignRight, tickValue);
// tick lines
if(yCoord == plotAreaTop || yCoord == plotAreaBottom) {
// skip tick lines right on the plot borders
continue;
}
// only draw tick lines for primary axis
if (pref.Graphs.Color.Ticks.Background.enabled) {
if (j%2)
{
int yCoordTop = yAxis.transform(yAxis.getTicks()[j], plotAreaTop, plotAreaBottom);
int yCoordBot = yAxis.transform(yAxis.getTicks()[j-1], plotAreaTop, plotAreaBottom);
if(yCoordTop > yCoordBot) {
auto buf = yCoordBot;
yCoordBot = yCoordTop;
yCoordTop = buf;
}
p.setBrush(pref.Graphs.Color.Ticks.Background.background);
p.setPen(pref.Graphs.Color.Ticks.Background.background);
auto rect = QRect(plotAreaLeft+1, yCoordTop+1, plotAreaWidth-2, yCoordBot-yCoordTop-2);
p.drawRect(rect);
}
}
p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
p.drawLine(plotAreaLeft, yCoord, plotAreaLeft + plotAreaWidth, yCoord);
}
}
// X axis name
p.setPen(QPen(pref.Graphs.Color.axis, 1));
p.drawText(QRect(plotAreaLeft, w.height()-pref.Graphs.fontSizeAxis*1.5, plotAreaWidth, pref.Graphs.fontSizeAxis*1.5), Qt::AlignHCenter, "Time");
// draw X axis ticks
if(xAxis.getTicks().size() >= 1) {
// draw X ticks
int significantDigits;
// this only works for evenly distributed ticks:
auto max = qMax(abs(xAxis.getTicks().front()), abs(xAxis.getTicks().back()));
double step;
if(xAxis.getTicks().size() >= 2) {
step = abs(xAxis.getTicks()[0] - xAxis.getTicks()[1]);
} else {
// only one tick, set arbitrary number of digits
step = max / 1000;
}
significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
QString prefixes = "fpnum kMG";
QString unit = "";
if(pref.Graphs.showUnits) {
unit = xAxis.Unit();
}
int lastTickLabelEnd = 0;
for(auto t : xAxis.getTicks()) {
auto xCoord = xAxis.transform(t, plotAreaLeft, plotAreaLeft + plotAreaWidth);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
p.drawLine(xCoord, plotAreaBottom, xCoord, plotAreaBottom + 2);
if(xCoord != plotAreaLeft && xCoord != plotAreaLeft + plotAreaWidth) {
p.setPen(QPen(pref.Graphs.Color.Ticks.divisions, 0.5, Qt::DashLine));
p.drawLine(xCoord, plotAreaTop, xCoord, plotAreaBottom);
}
if(xCoord - 40 <= lastTickLabelEnd) {
// would overlap previous tick label, skip
continue;
}
auto tickValue = Unit::ToString(t, unit, prefixes, significantDigits);
p.setPen(QPen(pref.Graphs.Color.axis, 1));
QRect bounding;
p.drawText(QRect(xCoord - pref.Graphs.fontSizeAxis*2, plotAreaBottom + 5, pref.Graphs.fontSizeAxis*4,
pref.Graphs.fontSizeAxis), Qt::AlignHCenter, tickValue, &bounding);
lastTickLabelEnd = bounding.x() + bounding.width();
}
}
if(displayData->size() >= 2) {
std::lock_guard<std::mutex> guard(bufferSwitchMutex);
unsigned int pxWidth = plotAreaWidth;
unsigned int pxHeight = plotAreaBottom - plotAreaTop;
std::vector<std::vector<unsigned int>> bitmap;
bitmap.resize(pxWidth);
for(auto &y : bitmap) {
y.resize(pxHeight, 0);
}
unsigned int highestIntensity = 0;
unsigned int numTraces = (*displayData)[0].y.size();
auto addLine = [&](int x0, int y0, int x1, int y1, bool skipFirst = true) {
bool first = true;
auto putpixel = [&](int x, int y) {
if(skipFirst && first) {
first = false;
return;
}
if(x < 0 || x >= (int) pxWidth || y < 0 || y >= (int) pxHeight) {
return;
}
auto &bin = bitmap[x][y];
bin++;
if(bin > highestIntensity) {
highestIntensity = bin;
}
};
int dx = abs (x1 - x0), sx = x0 < x1 ? 1 : -1;
int dy = -abs (y1 - y0), sy = y0 < y1 ? 1 : -1;
int err = dx + dy, e2; /* error value e_xy */
for (;;){ /* loop */
putpixel (x0,y0);
if (x0 == x1 && y0 == y1) break;
e2 = 2 * err;
if (e2 >= dy) { err += dy; x0 += sx; } /* e_xy+e_x > 0 */
if (e2 <= dx) { err += dx; y0 += sy; } /* e_xy+e_y < 0 */
}
};
// Assemble the bitmap
for(unsigned int i=1;i<xSamples;i++) {
int x0 = xAxis.transform((*displayData)[i-1].x, 0, pxWidth);
int x1 = xAxis.transform((*displayData)[i].x, 0, pxWidth);
if((x0 < 0 && x1 < 0) || (x0 >= (int) pxWidth && x1 >= (int) pxWidth)) {
// completely out of the frame
continue;
}
for(unsigned int j=0;j<numTraces;j++) {
int y0 = yAxis.transform((*displayData)[i-1].y[j], pxHeight, 0);
int y1 = yAxis.transform((*displayData)[i].y[j], pxHeight, 0);
addLine(x0, y0, x1, y1, i > 1);
}
}
// draw the bitmap
pen = QPen();
pen.setCosmetic(true);
for(unsigned int i=1;i<pxWidth;i++) {
for(unsigned int j=0;j<pxHeight;j++) {
if(bitmap[i][j] > 0) {
double value = (double) bitmap[i][j] / highestIntensity;
pen.setColor(Util::getIntensityGradeColor(value));
p.setPen(pen);
p.drawPoint(plotAreaLeft + i + 1, plotAreaTop + j + 1);
}
}
}
}
if(dropPending) {
p.setOpacity(0.5);
p.setBrush(Qt::white);
p.setPen(Qt::white);
// show drop area over whole plot
p.drawRect(plotRect);
auto font = p.font();
font.setPixelSize(20);
p.setFont(font);
p.setOpacity(1.0);
p.setPen(Qt::white);
auto text = "Drop here to add\n" + dropTrace->name() + "\nto waterfall plot";
p.drawText(plotRect, Qt::AlignCenter, text);
}
}
bool EyeDiagramPlot::supported(Trace *t)
{
if(t->getDataType() != Trace::DataType::Frequency) {
// wrong domain
return false;
}
if(t->isReflection()) {
// can't work with reflection measurements
return false;
}
return true;
}
QString EyeDiagramPlot::mouseText(QPoint pos)
{
QString ret;
if(positionWithinGraphArea(pos)) {
// cursor within plot area
QPointF coords = pixelToPlotValue(pos);
int significantDigits = floor(log10(abs(xAxis.getRangeMax()))) - floor(log10((abs(xAxis.getRangeMax() - xAxis.getRangeMin())) / 1000.0)) + 1;
ret += Unit::ToString(coords.x(), xAxis.Unit(), "fpnum kMG", significantDigits) + "\n";
auto max = qMax(abs(yAxis.getRangeMax()), abs(yAxis.getRangeMin()));
auto step = abs(yAxis.getRangeMax() - yAxis.getRangeMin()) / 1000.0;
significantDigits = floor(log10(max)) - floor(log10(step)) + 1;
ret += Unit::ToString(coords.y(), "V", yAxis.Prefixes(), significantDigits) + "\n";
}
return ret;
}
QPoint EyeDiagramPlot::plotValueToPixel(QPointF plotValue)
{
QPoint p;
p.setX(xAxis.transform(plotValue.x(), plotAreaLeft, plotAreaLeft + plotAreaWidth));
p.setY(yAxis.transform(plotValue.y(), plotAreaBottom, plotAreaTop));
return p;
}
QPointF EyeDiagramPlot::pixelToPlotValue(QPoint pixel)
{
QPointF p;
p.setX(xAxis.inverseTransform(pixel.x(), plotAreaLeft, plotAreaLeft + plotAreaWidth));
p.setY(yAxis.inverseTransform(pixel.y(), plotAreaBottom, plotAreaTop));
return p;
}
void EyeDiagramPlot::updateThread(unsigned int xSamples)
{
std::lock_guard<std::mutex> calc(calcMutex);
do {
updateScheduled = false;
setStatus("Starting calculation...");
if(!trace) {
setStatus("No trace assigned");
continue;
}
qDebug() << "Starting eye diagram calculation";
// sanity check values
if(datarate >= trace->getSample(trace->numSamples() - 1).x) {
setStatus("Data rate too high");
continue;
}
if(datarate <= 0) {
setStatus("Data rate too low");
continue;
}
if(risetime > 0.3 * 1.0 / datarate) {
setStatus("Rise time too high");
continue;
}
if(falltime > 0.3 * 1.0 / datarate) {
setStatus("Fall time too high");
continue;
}
if(jitter > 0.3 * 1.0 / datarate) {
setStatus("Jitter too high");
continue;
}
qDebug() << "Eye calculation: input values okay";
// calculate timestep
double timestep = calculatedTime() / xSamples;
// reserve vector for input data
std::vector<std::complex<double>> inVec(xSamples * (cycles + 1), 0.0); // needs to calculate one more cycle than required for the display (settling)
// resize working buffer
calcData->clear();
calcData->resize(xSamples);
for(auto& s : *calcData) {
s.y.resize(cycles, 0.0);
}
setStatus("Extracting impulse response...");
// calculate impulse response of trace
double eyeTimeShift = 0;
std::vector<std::complex<double>> impulseVec;
// determine how long the impulse response is
auto samples = tdr->numSamples();
if(samples == 0) {
// TDR calculation not yet done, unable to update
updating = false;
setStatus("No time-domain data from trace");
return;
}
auto length = tdr->getSample(samples - 1).x;
// determine average delay
auto total_step = tdr->getStepResponse(samples - 1);
for(unsigned int i=0;i<samples;i++) {
auto step = tdr->getStepResponse(i);
if(abs(total_step - step) <= abs(step)) {
// mid point reached
eyeTimeShift = tdr->getSample(i).x;
break;
}
}
unsigned long convolutedSize = length / timestep;
if(convolutedSize > inVec.size()) {
// impulse response is longer than what we display, truncate
convolutedSize = inVec.size();
}
impulseVec.resize(convolutedSize);
/*
* we can't use the impulse response directly because we most likely need samples inbetween
* the calculated values. Interpolation is available but if our sample spacing here is much
* wider than the impulse response data, we might miss peaks (or severely miscalculate their
* amplitude.
* Instead, the step response is interpolated and the impulse response determined by deriving
* it from the interpolated step response data. As the step response is the integrated imulse
* response data, we can't miss narrow peaks that way.
*/
double lastStepResponse = 0.0;
for(unsigned long i=0;i<convolutedSize;i++) {
auto x = i*timestep;
auto step = tdr->getInterpolatedStepResponse(x);
impulseVec[i] = step - lastStepResponse;
lastStepResponse = step;
}
eyeTimeShift += (risetime + falltime) * 1.25 / 4;
eyeTimeShift += 0.5 / datarate;
int eyeXshift = eyeTimeShift / timestep;
qDebug() << "Eye calculation: TDR calculation done";
setStatus("Generating PRBS sequence...");
auto prbs = new PRBS(patternbits);
auto getNextLevel = [&]() -> unsigned int {
unsigned int level = 0;
for(unsigned int i=0;i<bitsPerSymbol;i++) {
level <<= 1;
if(prbs->next()) {
level |= 0x01;
}
}
return level;
};
auto levelToVoltage = [=](unsigned int level) -> double {
unsigned int maxLevel = (0x01 << bitsPerSymbol) - 1;
return Util::Scale((double) level, 0.0, (double) maxLevel, lowlevel, highlevel);
};
unsigned int currentSignal = getNextLevel();
unsigned int nextSignal = getNextLevel();
// initialize random generator
std::random_device rd1;
std::mt19937 mt_noise(rd1());
std::normal_distribution<> dist_noise(0, noise);
std::random_device rd2;
std::mt19937 mt_jitter(rd2());
std::normal_distribution<> dist_jitter(0, jitter);
unsigned int bitcnt = 1;
double transitionTime = -10; // assume that we start with a settled input, last transition was "long" ago
for(unsigned int i=0;i<inVec.size();i++) {
double time = (i+eyeXshift)*timestep;
double voltage;
if(time >= transitionTime) {
// currently within a bit transition
double edgeTime = 0;
double expTimeConstant;
if(currentSignal < nextSignal) {
edgeTime = risetime;
} else if(currentSignal > nextSignal) {
edgeTime = falltime;
}
if(linearEdge) {
// edge is modeled as linear rise/fall
// increase slightly to account for typical 10/90% fall/rise time
edgeTime *= 1.25;
} else {
// edge is modeled as exponential rise/fall. Adjust time constant to match
// selected rise/fall time (with 10-90% signal rise/fall within specified time)
expTimeConstant = edgeTime / 2.197224577;
edgeTime = 6 * expTimeConstant; // after six time constants, 99.7% of signal movement has happened
}
if(time >= transitionTime + edgeTime) {
// bit transition settled
voltage = levelToVoltage(nextSignal);
// move on to the next bit
currentSignal = nextSignal;
nextSignal = getNextLevel();
transitionTime = bitcnt * 1.0 / datarate + dist_jitter(mt_jitter);
bitcnt++;
} else {
// still within rise or fall time
double timeSinceEdge = time - transitionTime;
double from = levelToVoltage(currentSignal);
double to = levelToVoltage(nextSignal);
if(linearEdge) {
double edgeRatio = timeSinceEdge / edgeTime;
voltage = from * (1.0 - edgeRatio) + to * edgeRatio;
} else {
voltage = from + (1.0 - exp(-timeSinceEdge/expTimeConstant)) * (to - from);
}
}
} else {
// still before the next edge
voltage = levelToVoltage(currentSignal);
}
voltage += dist_noise(mt_noise);
inVec[i] = voltage;
}
// input voltage vector fully assembled
qDebug() << "Eye calculation: input data generated";
setStatus("Performing convolution...");
qDebug() << "Convolve via FFT start";
std::vector<std::complex<double>> outVec;
impulseVec.resize(inVec.size(), 0.0);
outVec.resize(inVec.size());
Fft::convolve(inVec, impulseVec, outVec);
qDebug() << "Convolve via FFT stop";
// fill data from outVec
for(unsigned int i=0;i<xSamples;i++) {
(*calcData)[i].x = i * timestep;
}
for(unsigned int i=xSamples;i<inVec.size();i++) {
unsigned int x = i % xSamples;
unsigned int y = i / xSamples;
(*calcData)[x].y[y] = outVec[i].real();
}
qDebug() << "Eye calculation: Convolution done";
{
std::lock_guard<std::mutex> guard(bufferSwitchMutex);
// switch buffers
auto buf = displayData;
displayData = calcData;
calcData = buf;
}
setStatus("Eye calculation complete");
replot();
} while (updateScheduled);
updating = false;
}
void EyeDiagramPlot::triggerUpdate()
{
if(updating) {
// already updating, can't start again, schedule for later
updateScheduled = true;
} else {
updating = true;
new std::thread(&EyeDiagramPlot::updateThread, this, xSamples);
}
}
void EyeDiagramPlot::setStatus(QString s)
{
status = s;
emit statusChanged(s);
}
double EyeDiagramPlot::calculatedTime()
{
return 2.0 / datarate;
}
double EyeDiagramPlot::minDisplayVoltage()
{
auto eyeRange = highlevel - lowlevel;
return lowlevel - eyeRange * yOverrange;
}
double EyeDiagramPlot::maxDisplayVoltage()
{
auto eyeRange = highlevel - lowlevel;
return highlevel + eyeRange * yOverrange;
}

103
Software/PC_Application/LibreVNA-GUI/Traces/eyediagramplot.h Normal file
View File

@ -0,0 +1,103 @@
#ifndef EYEDIAGRAMPLOT_H
#define EYEDIAGRAMPLOT_H
#include "traceplot.h"
#include "traceaxis.h"
#include "Traces/Math/tdr.h"
#include <mutex>
#include <QObject>
class EyeDiagramPlot : public TracePlot
{
// friend class WaterfallAxisDialog;
Q_OBJECT
public:
EyeDiagramPlot(TraceModel &model, QWidget *parent = 0);
~EyeDiagramPlot();
virtual void enableTrace(Trace *t, bool enabled) override;
void replot() override;
virtual void move(const QPoint &vect) override;
virtual void zoom(const QPoint &center, double factor, bool horizontally, bool vertically) override;
virtual void setAuto(bool horizontally, bool vertically) override;
virtual Type getType() override { return Type::EyeDiagram;}
void fromJSON(nlohmann::json j) override;
nlohmann::json toJSON() override;
public slots:
void axisSetupDialog();
signals:
void statusChanged(QString);
protected:
virtual void updateContextMenu() override;
virtual bool positionWithinGraphArea(const QPoint &p) override;
virtual void draw(QPainter& p) override;
virtual bool supported(Trace *t) override;
virtual QPoint markerToPixel(Marker *m) override { Q_UNUSED(m) return QPoint(0,0);} // never used but most be implemented
virtual double nearestTracePoint(Trace *t, QPoint pixel, double *distance = nullptr) override {Q_UNUSED(t)Q_UNUSED(pixel)Q_UNUSED(distance)return 0.0;} // never used but most be implemented
virtual QString mouseText(QPoint pos) override;
protected slots:
virtual bool markerVisible(double x) override {Q_UNUSED(x)return false;} // never show markers
private slots:
void triggerUpdate();
private:
static constexpr double yOverrange = 0.2;
QPoint plotValueToPixel(QPointF plotValue);
QPointF pixelToPlotValue(QPoint pixel);
void updateThread(unsigned int xSamples);
void setStatus(QString s);
double calculatedTime();
double minDisplayVoltage();
double maxDisplayVoltage();
Math::TDR *tdr;
Trace *trace;
XAxis xAxis;
YAxis yAxis;
class Xdata {
public:
double x;
std::vector<double> y;
};
std::vector<Xdata> data[2];
std::vector<Xdata> *displayData;
std::vector<Xdata> *calcData;
bool updating;
bool updateScheduled;
unsigned int xSamples;
double datarate;
double highlevel;
double lowlevel;
unsigned int bitsPerSymbol;
double risetime;
double falltime;
double noise;
double jitter;
bool linearEdge;
unsigned int patternbits;
unsigned int cycles;
int plotAreaLeft, plotAreaWidth, plotAreaBottom, plotAreaTop;
QString status;
std::mutex bufferSwitchMutex;
std::mutex calcMutex;
};
#endif // EYEDIAGRAMPLOT_H

33
Software/PC_Application/LibreVNA-GUI/Traces/traceplot.cpp
View File

@ -11,6 +11,7 @@
#include <QPainterPath> #include <QPainterPath>
#include <QMimeData> #include <QMimeData>
#include <QDebug> #include <QDebug>
#include <QApplication>
std::set<TracePlot*> TracePlot::plots; std::set<TracePlot*> TracePlot::plots;
@ -20,6 +21,7 @@ TracePlot::TracePlot(TraceModel &model, QWidget *parent)
: QWidget(parent), : QWidget(parent),
model(model), model(model),
selectedMarker(nullptr), selectedMarker(nullptr),
movingGraph(false),
traceRemovalPending(false), traceRemovalPending(false),
dropPending(false), dropPending(false),
dropTrace(nullptr), dropTrace(nullptr),
@ -326,15 +328,29 @@ void TracePlot::mousePressEvent(QMouseEvent *event)
{ {
if(event->buttons() == Qt::LeftButton) { if(event->buttons() == Qt::LeftButton) {
selectedMarker = markerAtPosition(event->pos(), true); selectedMarker = markerAtPosition(event->pos(), true);
if(!selectedMarker && positionWithinGraphArea(event->pos())) {
// no marker at the position, enter trace moving mode
movingGraph = true;
lastMousePoint = event->pos();
cursorLabel->hide();
}
} else { } else {
selectedMarker = nullptr; selectedMarker = nullptr;
} }
if(event->button() == Qt::MiddleButton) {
bool horizontally = !(QApplication::keyboardModifiers() & Qt::ShiftModifier);
bool vertically = !(QApplication::keyboardModifiers() & Qt::ControlModifier);
setAuto(horizontally, vertically);
}
event->accept();
} }
void TracePlot::mouseReleaseEvent(QMouseEvent *event) void TracePlot::mouseReleaseEvent(QMouseEvent *event)
{ {
Q_UNUSED(event) Q_UNUSED(event)
selectedMarker = nullptr; selectedMarker = nullptr;
movingGraph = false;
event->accept();
} }
void TracePlot::mouseMoveEvent(QMouseEvent *event) void TracePlot::mouseMoveEvent(QMouseEvent *event)
@ -344,6 +360,9 @@ void TracePlot::mouseMoveEvent(QMouseEvent *event)
auto trace = selectedMarker->getTrace(); auto trace = selectedMarker->getTrace();
selectedMarker->setPosition(nearestTracePoint(trace, clickPoint)); selectedMarker->setPosition(nearestTracePoint(trace, clickPoint));
cursorLabel->hide(); cursorLabel->hide();
} else if(movingGraph) {
move(event->pos() - lastMousePoint);
lastMousePoint = event->pos();
} else { } else {
auto text = mouseText(clickPoint); auto text = mouseText(clickPoint);
if(!text.isEmpty()) { if(!text.isEmpty()) {
@ -358,6 +377,7 @@ void TracePlot::mouseMoveEvent(QMouseEvent *event)
cursorLabel->hide(); cursorLabel->hide();
} }
} }
event->accept();
} }
void TracePlot::leaveEvent(QEvent *event) void TracePlot::leaveEvent(QEvent *event)
@ -365,6 +385,19 @@ void TracePlot::leaveEvent(QEvent *event)
Q_UNUSED(event); Q_UNUSED(event);
cursorLabel->hide(); cursorLabel->hide();
selectedMarker = nullptr; selectedMarker = nullptr;
movingGraph = false;
event->accept();
}
void TracePlot::wheelEvent(QWheelEvent *event)
{
auto &pref = Preferences::getInstance();
if(positionWithinGraphArea(event->pos())) {
bool horizontally = !(QApplication::keyboardModifiers() & Qt::ShiftModifier);
bool vertically = !(QApplication::keyboardModifiers() & Qt::ControlModifier);
double factor = pow((1.0-pref.Graphs.zoomFactor), (double) event->angleDelta().y() / 120.0);
zoom(event->pos(), factor, horizontally, vertically);
}
} }
Marker *TracePlot::markerAtPosition(QPoint p, bool onlyMovable) Marker *TracePlot::markerAtPosition(QPoint p, bool onlyMovable)

8
Software/PC_Application/LibreVNA-GUI/Traces/traceplot.h
View File

@ -21,6 +21,7 @@ public:
XYPlot, XYPlot,
Waterfall, Waterfall,
PolarChart, PolarChart,
EyeDiagram,
}; };
TracePlot(TraceModel &model, QWidget *parent = nullptr); TracePlot(TraceModel &model, QWidget *parent = nullptr);
@ -60,6 +61,9 @@ protected:
virtual void updateContextMenu(){} virtual void updateContextMenu(){}
// adds common entries at bottom of context menu. Should be called at the end of derived udpateContextMenu functions // adds common entries at bottom of context menu. Should be called at the end of derived udpateContextMenu functions
void finishContextMenu(); void finishContextMenu();
virtual void move(const QPoint &vect) { Q_UNUSED(vect) }
virtual void zoom(const QPoint &center, double factor, bool horizontally, bool vertically) {Q_UNUSED(center)Q_UNUSED(factor)Q_UNUSED(horizontally)Q_UNUSED(vertically)}
virtual void setAuto(bool horizontally, bool vertically) {Q_UNUSED(horizontally)Q_UNUSED(vertically)}
virtual void replot(){update();} virtual void replot(){update();}
virtual void draw(QPainter& p) = 0; virtual void draw(QPainter& p) = 0;
virtual bool supported(Trace *t) = 0; virtual bool supported(Trace *t) = 0;
@ -77,8 +81,10 @@ protected:
void mouseReleaseEvent(QMouseEvent *event) override; void mouseReleaseEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override; void mouseMoveEvent(QMouseEvent *event) override;
void leaveEvent(QEvent *event) override; void leaveEvent(QEvent *event) override;
void wheelEvent(QWheelEvent *event) override;
Marker *markerAtPosition(QPoint p, bool onlyMovable = false); Marker *markerAtPosition(QPoint p, bool onlyMovable = false);
virtual bool positionWithinGraphArea(const QPoint &p) {Q_UNUSED(p) return false;}
void createMarkerAtPosition(QPoint p); void createMarkerAtPosition(QPoint p);
@ -106,6 +112,8 @@ protected:
double sweep_fmin, sweep_fmax; double sweep_fmin, sweep_fmax;
TraceModel &model; TraceModel &model;
Marker *selectedMarker; Marker *selectedMarker;
bool movingGraph;
QPoint lastMousePoint;
TileWidget *parentTile; TileWidget *parentTile;
// graph settings have been changed, check and possibly remove incompatible traces before next paint event // graph settings have been changed, check and possibly remove incompatible traces before next paint event

4
Software/PC_Application/LibreVNA-GUI/Traces/tracepolar.h
View File

@ -24,7 +24,7 @@ public:
void wheelEvent(QWheelEvent *event) override; void wheelEvent(QWheelEvent *event) override;
public slots: public slots:
virtual void axisSetupDialog() {}; virtual void axisSetupDialog() {}
protected: protected:
static constexpr double polarCoordMax = 4096; static constexpr double polarCoordMax = 4096;
@ -41,7 +41,7 @@ protected:
virtual bool markerVisible(double x) override; virtual bool markerVisible(double x) override;
virtual void updateContextMenu() override; virtual void updateContextMenu() override;
virtual bool supported(Trace *t) override {Q_UNUSED(t) return false;}; virtual bool supported(Trace *t) override {Q_UNUSED(t) return false;}
// given two points and a circle, the two points are adjusted in such a way that the line they describe // given two points and a circle, the two points are adjusted in such a way that the line they describe
// is constrained within the circle. Returns true if there is a remaining line segment in the circle, false // is constrained within the circle. Returns true if there is a remaining line segment in the circle, false

4
Software/PC_Application/LibreVNA-GUI/Traces/tracesmithchart.h
View File

@ -58,7 +58,7 @@ private:
class SmithChartTypeDelegate : public QStyledItemDelegate class SmithChartTypeDelegate : public QStyledItemDelegate
{ {
Q_OBJECT; Q_OBJECT
QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const override; QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const override;
QWidget *createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const override; QWidget *createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const override;
void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const override; void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const override;
@ -66,7 +66,7 @@ class SmithChartTypeDelegate : public QStyledItemDelegate
class SmithChartParamDelegate : public QStyledItemDelegate class SmithChartParamDelegate : public QStyledItemDelegate
{ {
Q_OBJECT; Q_OBJECT
QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const override; QSize sizeHint ( const QStyleOptionViewItem & option, const QModelIndex & index ) const override;
QWidget *createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const override; QWidget *createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const override;
void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const override; void setModelData(QWidget * editor, QAbstractItemModel * model, const QModelIndex & index) const override;

1
Software/PC_Application/LibreVNA-GUI/Traces/tracewaterfall.cpp
View File

@ -54,7 +54,6 @@ void TraceWaterfall::enableTrace(Trace *t, bool enabled)
} }
trace = nullptr; trace = nullptr;
} }
} }
void TraceWaterfall::replot() void TraceWaterfall::replot()

68
Software/PC_Application/LibreVNA-GUI/Traces/tracexyplot.cpp
View File

@ -1,4 +1,4 @@
#include "tracexyplot.h" #include "tracexyplot.h"
#include "trace.h" #include "trace.h"
#include "CustomWidgets/informationbox.h" #include "CustomWidgets/informationbox.h"
@ -96,6 +96,64 @@ void TraceXYPlot::replot()
TracePlot::replot(); TracePlot::replot();
} }
void TraceXYPlot::move(const QPoint &vect)
{
if(!xAxis.getLog()) {
// can only move axis in linear mode
// calculate amount of movement
double distance = xAxis.inverseTransform(vect.x(), 0, plotAreaWidth) - xAxis.getRangeMin();
xAxis.set(xAxis.getType(), false, false, xAxis.getRangeMin() - distance, xAxis.getRangeMax() - distance, xAxis.getRangeDiv());
xAxisMode = XAxisMode::Manual;
}
for(int i=0;i<2;i++) {
if(!yAxis[i].getLog()) {
// can only move axis in linear mode
// calculate amount of movement
double distance = yAxis[i].inverseTransform(vect.y(), 0, plotAreaTop - plotAreaBottom) - yAxis[i].getRangeMin();
yAxis[i].set(yAxis[i].getType(), false, false, yAxis[i].getRangeMin() - distance, yAxis[i].getRangeMax() - distance, yAxis[i].getRangeDiv());
}
}
replot();
}
void TraceXYPlot::zoom(const QPoint &center, double factor, bool horizontally, bool vertically)
{
if(horizontally && !xAxis.getLog()) {
// can only zoom axis in linear mode
// calculate center point
double cp = xAxis.inverseTransform(center.x(), plotAreaLeft, plotAreaLeft + plotAreaWidth);
double min = ((xAxis.getRangeMin() - cp) * factor) + cp;
double max = ((xAxis.getRangeMax() - cp) * factor) + cp;
xAxis.set(xAxis.getType(), false, false, min, max, xAxis.getRangeDiv() * factor);
xAxisMode = XAxisMode::Manual;
}
for(int i=0;i<2;i++) {
if(vertically && yAxis[i].getType() != YAxis::Type::Disabled && !yAxis[i].getLog()) {
// can only move axis in linear mode
// calculate center point
double cp = yAxis[i].inverseTransform(center.y(), plotAreaBottom, plotAreaTop);
double min = ((yAxis[i].getRangeMin() - cp) * factor) + cp;
double max = ((yAxis[i].getRangeMax() - cp) * factor) + cp;
yAxis[i].set(yAxis[i].getType(), false, false, min, max, yAxis[i].getRangeDiv() * factor);
}
}
replot();
}
void TraceXYPlot::setAuto(bool horizontally, bool vertically)
{
if(horizontally) {
xAxisMode = XAxisMode::FitTraces;
xAxis.set(xAxis.getType(), xAxis.getLog(), true, xAxis.getRangeMin(), xAxis.getRangeMax(), xAxis.getRangeDiv());
}
for(int i=0;i<2;i++) {
if(vertically && yAxis[i].getType() != YAxis::Type::Disabled) {
yAxis[i].set(yAxis[i].getType(), yAxis[i].getLog(), true, yAxis[i].getRangeMin(), yAxis[i].getRangeMax(), yAxis[i].getRangeDiv());
}
}
replot();
}
nlohmann::json TraceXYPlot::toJSON() nlohmann::json TraceXYPlot::toJSON()
{ {
nlohmann::json j; nlohmann::json j;
@ -325,6 +383,12 @@ void TraceXYPlot::updateContextMenu()
finishContextMenu(); finishContextMenu();
} }
bool TraceXYPlot::positionWithinGraphArea(const QPoint &p)
{
return p.x() >= plotAreaLeft && p.x() <= plotAreaLeft + plotAreaWidth
&& p.y() >= plotAreaTop && p.y() <= plotAreaBottom;
}
bool TraceXYPlot::dropSupported(Trace *t) bool TraceXYPlot::dropSupported(Trace *t)
{ {
if(domainMatch(t) && !supported(t)) { if(domainMatch(t) && !supported(t)) {
@ -1057,7 +1121,7 @@ void TraceXYPlot::traceDropped(Trace *t, QPoint position)
QString TraceXYPlot::mouseText(QPoint pos) QString TraceXYPlot::mouseText(QPoint pos)
{ {
QString ret; QString ret;
if(QRect(plotAreaLeft, 0, plotAreaWidth + 1, plotAreaBottom).contains(pos)) { if(positionWithinGraphArea(pos)) {
// cursor within plot area // cursor within plot area
QPointF coords[2]; QPointF coords[2];
coords[0] = pixelToPlotValue(pos, 0); coords[0] = pixelToPlotValue(pos, 0);

5
Software/PC_Application/LibreVNA-GUI/Traces/tracexyplot.h
View File

@ -74,6 +74,10 @@ public:
void updateSpan(double min, double max) override; void updateSpan(double min, double max) override;
void replot() override; void replot() override;
virtual void move(const QPoint &vect) override;
virtual void zoom(const QPoint &center, double factor, bool horizontally, bool vertically) override;
virtual void setAuto(bool horizontally, bool vertically) override;
virtual Type getType() override { return Type::XYPlot;} virtual Type getType() override { return Type::XYPlot;}
virtual nlohmann::json toJSON() override; virtual nlohmann::json toJSON() override;
virtual void fromJSON(nlohmann::json j) override; virtual void fromJSON(nlohmann::json j) override;
@ -88,6 +92,7 @@ public slots:
protected: protected:
virtual bool configureForTrace(Trace *t) override; virtual bool configureForTrace(Trace *t) override;
virtual void updateContextMenu() override; virtual void updateContextMenu() override;
virtual bool positionWithinGraphArea(const QPoint &p) override;
virtual bool dropSupported(Trace *t) override; virtual bool dropSupported(Trace *t) override;
virtual void draw(QPainter &p) override; virtual void draw(QPainter &p) override;

12
Software/PC_Application/LibreVNA-GUI/VNA/vna.cpp
View File

@ -12,7 +12,6 @@
#include "CustomWidgets/siunitedit.h" #include "CustomWidgets/siunitedit.h"
#include "Traces/Marker/markerwidget.h" #include "Traces/Marker/markerwidget.h"
#include "Tools/impedancematchdialog.h" #include "Tools/impedancematchdialog.h"
#include "Tools/eyediagramdialog.h"
#include "ui_main.h" #include "ui_main.h"
#include "Device/firmwareupdatedialog.h" #include "Device/firmwareupdatedialog.h"
#include "preferences.h" #include "preferences.h"
@ -183,8 +182,6 @@ VNA::VNA(AppWindow *window, QString name)
actions.insert(toolsMenu->menuAction()); actions.insert(toolsMenu->menuAction());
auto impedanceMatching = toolsMenu->addAction("Impedance Matching"); auto impedanceMatching = toolsMenu->addAction("Impedance Matching");
connect(impedanceMatching, &QAction::triggered, this, &VNA::StartImpedanceMatching); connect(impedanceMatching, &QAction::triggered, this, &VNA::StartImpedanceMatching);
auto eyeDiagram = toolsMenu->addAction("Eye Diagram");
connect(eyeDiagram, &QAction::triggered, this, &VNA::StartEyeDiagram);
defaultCalMenu = new QMenu("Default Calibration", window); defaultCalMenu = new QMenu("Default Calibration", window);
assignDefaultCal = defaultCalMenu->addAction("Assign..."); assignDefaultCal = defaultCalMenu->addAction("Assign...");
@ -955,15 +952,6 @@ void VNA::StartImpedanceMatching()
} }
} }
void VNA::StartEyeDiagram()
{
auto dialog = new EyeDiagramDialog(traceModel);
if(AppWindow::showGUI()) {
dialog->show();
}
}
void VNA::SetSweepType(SweepType sw) void VNA::SetSweepType(SweepType sw)
{ {
if(settings.sweepType != sw) { if(settings.sweepType != sw) {

1
Software/PC_Application/LibreVNA-GUI/VNA/vna.h
View File

@ -81,7 +81,6 @@ public slots:
private slots: private slots:
void NewDatapoint(VirtualDevice::VNAMeasurement m); void NewDatapoint(VirtualDevice::VNAMeasurement m);
void StartImpedanceMatching(); void StartImpedanceMatching();
void StartEyeDiagram();
// Sweep control // Sweep control
void SetSweepType(SweepType sw); void SetSweepType(SweepType sw);
void SetStartFreq(double freq); void SetStartFreq(double freq);

3
Software/PC_Application/LibreVNA-GUI/preferences.h
View File

@ -128,6 +128,8 @@ public:
int fontSizeMarkerData; int fontSizeMarkerData;
int fontSizeTraceNames; int fontSizeTraceNames;
int fontSizeCursorOverlay; int fontSizeCursorOverlay;
double zoomFactor;
} Graphs; } Graphs;
struct { struct {
struct { struct {
@ -211,6 +213,7 @@ private:
{&Graphs.fontSizeCursorOverlay, "Graphs.fontSizeCursorOverlay", 12}, {&Graphs.fontSizeCursorOverlay, "Graphs.fontSizeCursorOverlay", 12},
{&Graphs.fontSizeMarkerData, "Graphs.fontSizeMarkerData", 12}, {&Graphs.fontSizeMarkerData, "Graphs.fontSizeMarkerData", 12},
{&Graphs.fontSizeTraceNames, "Graphs.fontSizeTraceNames", 12}, {&Graphs.fontSizeTraceNames, "Graphs.fontSizeTraceNames", 12},
{&Graphs.zoomFactor, "Graphs.zoomFactor", 0.2},
{&Marker.defaultBehavior.showDataOnGraphs, "Marker.defaultBehavior.ShowDataOnGraphs", true}, {&Marker.defaultBehavior.showDataOnGraphs, "Marker.defaultBehavior.ShowDataOnGraphs", true},
{&Marker.defaultBehavior.showAllData, "Marker.defaultBehavior.ShowAllData", false}, {&Marker.defaultBehavior.showAllData, "Marker.defaultBehavior.ShowAllData", false},
{&Marker.interpolatePoints, "Marker.interpolatePoints", false}, {&Marker.interpolatePoints, "Marker.interpolatePoints", false},

327
Software/PC_Application/LibreVNA-GUI/test.setup Normal file
View File

@ -0,0 +1,327 @@
{
"Modes": [
{
"name": "Vector Network Analyzer",
"settings": {
"de-embedding": null,
"de-embedding_enabled": false,
"markers": null,
"sweep": {
"IFBW": 10000.0,
"frequency": {
"log": false,
"power": -10.0,
"start": 1000000.0,
"stop": 6000000000.0
},
"points": 501,
"power": {
"frequency": 1000000000.0,
"start": -30.0,
"stop": -15.0
},
"single": false,
"type": "Frequency"
},
"tiles": {
"orientation": "vertical",
"sizes": [
373,
372
],
"split": true,
"tile1": {
"orientation": "horizontal",
"sizes": [
797,
796
],
"split": true,
"tile1": {
"plot": "smithchart",
"plotsettings": {
"Z0": 50.0,
"constantLines": null,
"edge_reflection": 1.0,
"frequency_override": false,
"limit_to_edge": true,
"limit_to_span": true,
"offset_axis_x": 0.0,
"override_max": 6000000000.0,
"override_min": 0.0,
"traces": [
753243053
]
},
"split": false
},
"tile2": {
"plot": "EyeDiagram",
"plotsettings": {
"XAxis": {
"autorange": false,
"div": 7.62939453125e-09,
"max": 5.653089396158854e-08,
"min": -1.9763051350911456e-08
},
"YAxis": {
"autorange": false,
"div": 0.3814697265625,
"max": 2.9595544473356057,
"min": -2.381021724539393
},
"bitPerSymbol": 1,
"cycles": 200,
"datarate": 100000000.0,
"falltime": 1e-09,
"highlevel": 1.0,
"jitter": 1e-10,
"linearEdge": true,
"lowlevel": 0.0,
"noise": 0.01,
"patternBits": 9,
"risetime": 1e-09,
"traces": [
3153058534
],
"xSamples": 200
},
"split": false
}
},
"tile2": {
"orientation": "horizontal",
"sizes": [
797,
796
],
"split": true,
"tile1": {
"plot": "EyeDiagram",
"plotsettings": {
"XAxis": {
"autorange": true,
"div": 1e-07,
"max": 1e-06,
"min": 0.0
},
"YAxis": {
"autorange": true,
"div": 0.1,
"max": 1.2,
"min": -0.2
},
"bitPerSymbol": 2,
"cycles": 200,
"datarate": 2000000.0,
"falltime": 1e-09,
"highlevel": 1.0,
"jitter": 4e-10,
"linearEdge": true,
"lowlevel": 0.0,
"noise": 0.03,
"patternBits": 9,
"risetime": 1e-09,
"traces": [
2663219575
],
"xSamples": 200
},
"split": false
},
"tile2": {
"plot": "smithchart",
"plotsettings": {
"Z0": 50.0,
"constantLines": null,
"edge_reflection": 1.0,
"frequency_override": false,
"limit_to_edge": true,
"limit_to_span": true,
"offset_axis_x": 0.0,
"override_max": 6000000000.0,
"override_min": 0.0,
"traces": [
1360958916
]
},
"split": false
}
}
},
"traces": [
{
"color": "#ffff00",
"hash": 753243053,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "S11",
"parameter": "S11",
"paused": false,
"reflection": true,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
},
{
"color": "#0000ff",
"hash": 3153058534,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "S12",
"parameter": "S12",
"paused": false,
"reflection": false,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
},
{
"color": "#00ff00",
"hash": 2663219575,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "S21",
"parameter": "S21",
"paused": false,
"reflection": false,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
},
{
"color": "#ff0000",
"hash": 1360958916,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "S22",
"parameter": "S22",
"paused": false,
"reflection": true,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
}
]
},
"type": "Vector Network Analyzer"
},
{
"name": "Signal Generator",
"settings": {
"frequency": 1000000000.0,
"port": 0,
"power": 0.0,
"sweep": {
"dwell": 1.0,
"enabled": false,
"span": 0.0,
"steps": 100.0
}
},
"type": "Signal Generator"
},
{
"name": "Spectrum Analyzer",
"settings": {
"markers": null,
"sweep": {
"acquisition": {
"RBW": 100.0,
"detector": "+Peak",
"signal ID": true,
"window": "Kaiser"
},
"frequency": {
"start": 999975000.0,
"stop": 1000025000.0
},
"single": false,
"trackingGenerator": {
"enabled": false,
"offset": 0.0,
"port": 1,
"power": -20.0
}
},
"tiles": {
"plot": "XY-plot",
"plotsettings": {
"XAxis": {
"div": 5000.0,
"log": false,
"max": 1000025000.0,
"min": 999975000.0,
"mode": "Use Span",
"type": "Frequency"
},
"YPrimary": {
"autorange": false,
"div": 10.0,
"log": false,
"max": 0.0,
"min": -120.0,
"traces": [
3115643686,
1375490686
],
"type": "Magnitude"
},
"YSecondary": {
"autorange": true,
"div": 0.0,
"log": false,
"max": 1.0,
"min": -1.0,
"traces": null,
"type": "Disabled"
},
"limitLines": null
},
"split": false
},
"traces": [
{
"color": "#ffff00",
"hash": 1375490686,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "PORT1",
"parameter": "PORT1",
"paused": false,
"reflection": false,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
},
{
"color": "#0000ff",
"hash": 3115643686,
"livetype": 0,
"math": null,
"math_enabled": false,
"name": "PORT2",
"parameter": "PORT2",
"paused": false,
"reflection": false,
"type": "Live",
"velocityFactor": 0.66,
"visible": true
}
]
},
"type": "Spectrum Analyzer"
}
],
"Reference": {
"Mode": "Internal",
"Output": "Off"
},
"activeMode": "Vector Network Analyzer",
"version": "1.5.0-alpha.1-329f4487e"
}

6
Software/PC_Application/LibreVNA-Test/LibreVNA-Test.pro
View File

@ -40,7 +40,6 @@ SOURCES += \
../LibreVNA-GUI/SpectrumAnalyzer/spectrumanalyzer.cpp \ ../LibreVNA-GUI/SpectrumAnalyzer/spectrumanalyzer.cpp \
../LibreVNA-GUI/SpectrumAnalyzer/tracewidgetsa.cpp \ ../LibreVNA-GUI/SpectrumAnalyzer/tracewidgetsa.cpp \
../LibreVNA-GUI/Tools/eseries.cpp \ ../LibreVNA-GUI/Tools/eseries.cpp \
../LibreVNA-GUI/Tools/eyediagramdialog.cpp \
../LibreVNA-GUI/Tools/impedancematchdialog.cpp \ ../LibreVNA-GUI/Tools/impedancematchdialog.cpp \
../LibreVNA-GUI/Tools/parameters.cpp \ ../LibreVNA-GUI/Tools/parameters.cpp \
../LibreVNA-GUI/Traces/Marker/marker.cpp \ ../LibreVNA-GUI/Traces/Marker/marker.cpp \
@ -91,6 +90,7 @@ SOURCES += \
../LibreVNA-GUI/Traces/Math/timegate.cpp \ ../LibreVNA-GUI/Traces/Math/timegate.cpp \
../LibreVNA-GUI/Traces/Math/tracemath.cpp \ ../LibreVNA-GUI/Traces/Math/tracemath.cpp \
../LibreVNA-GUI/Traces/Math/windowfunction.cpp \ ../LibreVNA-GUI/Traces/Math/windowfunction.cpp \
../LibreVNA-GUI/Traces/eyediagramplot.cpp \
../LibreVNA-GUI/Traces/fftcomplex.cpp \ ../LibreVNA-GUI/Traces/fftcomplex.cpp \
../LibreVNA-GUI/Traces/sparamtraceselector.cpp \ ../LibreVNA-GUI/Traces/sparamtraceselector.cpp \
../LibreVNA-GUI/Traces/trace.cpp \ ../LibreVNA-GUI/Traces/trace.cpp \
@ -203,7 +203,6 @@ HEADERS += \
../LibreVNA-GUI/SpectrumAnalyzer/spectrumanalyzer.h \ ../LibreVNA-GUI/SpectrumAnalyzer/spectrumanalyzer.h \
../LibreVNA-GUI/SpectrumAnalyzer/tracewidgetsa.h \ ../LibreVNA-GUI/SpectrumAnalyzer/tracewidgetsa.h \
../LibreVNA-GUI/Tools/eseries.h \ ../LibreVNA-GUI/Tools/eseries.h \
../LibreVNA-GUI/Tools/eyediagramdialog.h \
../LibreVNA-GUI/Tools/impedancematchdialog.h \ ../LibreVNA-GUI/Tools/impedancematchdialog.h \
../LibreVNA-GUI/Tools/parameters.h \ ../LibreVNA-GUI/Tools/parameters.h \
../LibreVNA-GUI/Traces/Marker/marker.h \ ../LibreVNA-GUI/Traces/Marker/marker.h \
@ -265,6 +264,7 @@ HEADERS += \
../LibreVNA-GUI/Traces/Math/timegate.h \ ../LibreVNA-GUI/Traces/Math/timegate.h \
../LibreVNA-GUI/Traces/Math/tracemath.h \ ../LibreVNA-GUI/Traces/Math/tracemath.h \
../LibreVNA-GUI/Traces/Math/windowfunction.h \ ../LibreVNA-GUI/Traces/Math/windowfunction.h \
../LibreVNA-GUI/Traces/eyediagramplot.h \
../LibreVNA-GUI/Traces/fftcomplex.h \ ../LibreVNA-GUI/Traces/fftcomplex.h \
../LibreVNA-GUI/Traces/sparamtraceselector.h \ ../LibreVNA-GUI/Traces/sparamtraceselector.h \
../LibreVNA-GUI/Traces/trace.h \ ../LibreVNA-GUI/Traces/trace.h \
@ -293,7 +293,6 @@ HEADERS += \
../LibreVNA-GUI/VNA/Deembedding/matchingnetwork.h \ ../LibreVNA-GUI/VNA/Deembedding/matchingnetwork.h \
../LibreVNA-GUI/VNA/Deembedding/portextension.h \ ../LibreVNA-GUI/VNA/Deembedding/portextension.h \
../LibreVNA-GUI/VNA/Deembedding/twothru.h \ ../LibreVNA-GUI/VNA/Deembedding/twothru.h \
../LibreVNA-GUI/VNA/portextensiondialog.h \
../LibreVNA-GUI/VNA/tracewidgetvna.h \ ../LibreVNA-GUI/VNA/tracewidgetvna.h \
../LibreVNA-GUI/VNA/vna.h \ ../LibreVNA-GUI/VNA/vna.h \
../LibreVNA-GUI/about.h \ ../LibreVNA-GUI/about.h \
@ -343,7 +342,6 @@ FORMS += \
../LibreVNA-GUI/Device/firmwareupdatedialog.ui \ ../LibreVNA-GUI/Device/firmwareupdatedialog.ui \
../LibreVNA-GUI/Device/manualcontroldialog.ui \ ../LibreVNA-GUI/Device/manualcontroldialog.ui \
../LibreVNA-GUI/Generator/signalgenwidget.ui \ ../LibreVNA-GUI/Generator/signalgenwidget.ui \
../LibreVNA-GUI/Tools/eyediagramdialog.ui \
../LibreVNA-GUI/Tools/impedancematchdialog.ui \ ../LibreVNA-GUI/Tools/impedancematchdialog.ui \
../LibreVNA-GUI/Traces/Marker/markerwidget.ui \ ../LibreVNA-GUI/Traces/Marker/markerwidget.ui \
../LibreVNA-GUI/Traces/Math/dftdialog.ui \ ../LibreVNA-GUI/Traces/Math/dftdialog.ui \