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feat: added Oscilloscope functionality
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@AsCress
AsCress committed Feb 14, 2025
1 parent 5d8d1e4 commit 1403c6e
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Showing 7 changed files with 309 additions and 143 deletions.
61 changes: 61 additions & 0 deletions lib/others/oscilloscope_axes_scale.dart
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Original file line number Diff line number Diff line change
@@ -0,0 +1,61 @@
class OscillscopeAxesScale {
late double _yAxisScale;
late double _yAxisScaleMin;
late double _yAxisScaleMax;
late double _xAxisScale;

OscillscopeAxesScale() {
_yAxisScale = 16;
_yAxisScaleMin = -16;
_yAxisScaleMax = 16;
_xAxisScale = 875;
}

double get yAxisScale => _yAxisScale;
double get yAxisScaleMin => _yAxisScaleMin;
double get yAxisScaleMax => _yAxisScaleMax;
double get xAxisScale => _xAxisScale;

void setYAxisScale(double value) {
_yAxisScale = value;
_yAxisScaleMax = value;
_yAxisScaleMin = -value;
}

void setYAxisScaleMin(double value) {
_yAxisScaleMin = value;
}

void setYAxisScaleMax(double value) {
_yAxisScaleMax = value;
}

void setXAxisScale(double value) {
_xAxisScale = value;
}

double getTimebaseInterval() {
switch (_xAxisScale) {
case 875.00:
return 100;
case 1000.00:
return 0.2;
case 2000.00:
return 0.3;
case 4000.00:
return 0.7;
case 8000.00:
return 1;
case 25600.00:
return 4;
case 38400.00:
return 10;
case 51200.00:
return 10;
case 102400.00:
return 20;
default:
return _xAxisScale / 5000;
}
}
}
143 changes: 87 additions & 56 deletions lib/providers/oscilloscope_state_provider.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import 'package:data/data.dart';
import 'package:fl_chart/fl_chart.dart';
import 'package:flutter/material.dart';
import 'package:pslab/others/logger_service.dart';
import 'package:pslab/others/oscilloscope_axes_scale.dart';
import 'package:pslab/providers/locator.dart';

import '../communication/analytics_class.dart';
Expand Down Expand Up @@ -57,12 +58,12 @@ class OscilloscopeStateProvider extends ChangeNotifier {
late String curveFittingChannel2;
late Map<String, double> xOffsets;
late Map<String, double> yOffsets;
late double _trigger;
late double trigger;
late ScienceLab _scienceLab;
late AnalyticsClass _analyticsClass;
late bool _monitor;
late double _maxAmp;
// late double _maxFreq;
late double _maxFreq;
late bool _isRecording;
late bool _isRunning;
// bool _isMeasurementsChecked = false;
Expand All @@ -71,10 +72,6 @@ class OscilloscopeStateProvider extends ChangeNotifier {
late String xyPlotAxis2;
late List<List<FlSpot>> dataEntries;
late List<String> dataParamsChannels;

late double _yAxisScale;
double get yAxisScale => _yAxisScale;

late int _timebaseDivisions;
int get timebaseDivisions => _timebaseDivisions;

Expand All @@ -86,6 +83,8 @@ class OscilloscopeStateProvider extends ChangeNotifier {

late Timer _timer;

late OscillscopeAxesScale oscillscopeAxesScale;

OscilloscopeStateProvider() {
_audioJack = AudioJack();
_selectedIndex = 0;
Expand All @@ -103,10 +102,9 @@ class OscilloscopeStateProvider extends ChangeNotifier {
_monitor = true;
_isRecording = false;
_isRunning = true;
xyPlotAxis1 = 'CH1';
xyPlotAxis2 = 'CH2';
xyPlotAxis1 = CHANNEL.ch1.toString();
xyPlotAxis2 = CHANNEL.ch2.toString();
dataEntries = [];
_yAxisScale = 16;
_timebaseDivisions = 8;
timebaseSlider = 0;
oscillscopeRangeSelection = 0;
Expand All @@ -120,7 +118,8 @@ class OscilloscopeStateProvider extends ChangeNotifier {

_scienceLab = getIt.get<ScienceLab>();
triggerChannel = CHANNEL.ch1.toString();
_trigger = 0;
triggerMode = MODE.rising.toString();
trigger = 0;
timebase = 875;
samples = 512;
timeGap = 2;
Expand All @@ -141,6 +140,7 @@ class OscilloscopeStateProvider extends ChangeNotifier {
curveFittingChannel1 = '';
curveFittingChannel2 = '';
_analyticsClass = AnalyticsClass();
oscillscopeAxesScale = OscillscopeAxesScale();

monitor();
}
Expand Down Expand Up @@ -200,7 +200,58 @@ class OscilloscopeStateProvider extends ChangeNotifier {
);
}

Future<void> xyPlotTask(String xyPlotAxis1, String xyPlotAxis2) async {}
Future<void> xyPlotTask(String xyPlotAxis1, String xyPlotAxis2) async {
String analogInput1 = xyPlotAxis1;
String analogInput2 = xyPlotAxis2;
List<List<FlSpot>> entries = [];

Map<String, List<double>> data;
entries.add([]);
if (analogInput1 == analogInput2) {
await _scienceLab.captureTraces(
1, samples, timeGap, analogInput1, isTriggerSelected, null);
data = await _scienceLab.fetchTrace(1);
List<double>? yData = data['y'];
int n = yData!.length;
for (int i = 0; i < n; i++) {
entries[0].add(FlSpot(yData[i], yData[i]));
}
} else {
int noOfChannels = 1;
if ((analogInput1 == CHANNEL.ch1.toString() &&
analogInput2 == CHANNEL.ch2.toString()) ||
(analogInput1 == CHANNEL.ch2.toString() &&
analogInput2 == CHANNEL.ch1.toString())) {
noOfChannels = 2;
await _scienceLab.captureTraces(
noOfChannels, 175, timeGap, 'CH1', isTriggerSelected, null);
data = await _scienceLab.fetchTrace(1);
List<double>? yData1 = data['y'];
data = await _scienceLab.fetchTrace(2);
List<double>? yData2 = data['y'];
int n = min(yData1!.length, yData2!.length);
for (int i = 0; i < n; i++) {
entries[0].add(FlSpot(yData1[i], yData2[i]));
}
} else {
noOfChannels = 4;
await _scienceLab.captureTraces(
noOfChannels, 175, timeGap, 'CH1', isTriggerSelected, null);
data =
await _scienceLab.fetchTrace(_channelIndexMap[analogInput1]! + 1);
List<double>? yData1 = data['y'];
data =
await _scienceLab.fetchTrace(_channelIndexMap[analogInput2]! + 1);
List<double>? yData2 = data['y'];
int n = min(yData1!.length, yData2!.length);
for (int i = 0; i < n; i++) {
entries[0].add(FlSpot(yData1[i], yData2[i]));
}
}
}
dataEntries = List.from(entries);
notifyListeners();
}

Future<void> captureTask(List<String> channels) async {
List<List<FlSpot>> entries = [];
Expand Down Expand Up @@ -246,7 +297,7 @@ class OscilloscopeStateProvider extends ChangeNotifier {
fftOut = fft(yComplex);
}
double factor = samples * timeGap * 1e-3;
// _maxFreq = (n / 2 - 1) / factor;
_maxFreq = (n / 2 - 1) / factor;
double mA = 0;
double prevY = yData[0];
bool increasing = false;
Expand All @@ -266,18 +317,18 @@ class OscilloscopeStateProvider extends ChangeNotifier {
xValue += timeGap;
}
if (triggerMode == MODE.rising.toString() &&
prevY < _trigger &&
currY >= _trigger &&
prevY < trigger &&
currY >= trigger &&
increasing) {
isTriggered = true;
} else if (triggerMode == MODE.falling.toString() &&
prevY > _trigger &&
currY <= _trigger &&
prevY > trigger &&
currY <= trigger &&
!increasing) {
isTriggered = true;
} else if (triggerMode == MODE.dual.toString() &&
(prevY < _trigger && currY >= _trigger && increasing) ||
(prevY > _trigger && currY <= _trigger && !increasing)) {
(prevY < trigger && currY >= trigger && increasing) ||
(prevY > trigger && currY <= trigger && !increasing)) {
isTriggered = true;
}
prevY = currY;
Expand Down Expand Up @@ -358,15 +409,16 @@ class OscilloscopeStateProvider extends ChangeNotifier {
int n = buffer.length;
List<Complex> fftOut = [];
if (isFourierTransformSelected) {
List<Complex> yComplex = List.filled(buffer.length, const Complex(0));
List<Complex> yComplex =
List.filled(buffer.length, const Complex(0), growable: true);
for (int j = 0; j < buffer.length; j++) {
double audioValue = buffer[j] * 3;
yComplex[j] = Complex(audioValue);
}
fftOut = fft(yComplex);
}
double factor = buffer.length * timeGap * 1e-3;
// _maxFreq = (n / 2 - 1) / factor;
_maxFreq = (n / 2 - 1) / factor;
double mA = 0;
double prevY = buffer[0] * 3;
bool increasing = false;
Expand All @@ -387,18 +439,18 @@ class OscilloscopeStateProvider extends ChangeNotifier {
increasing = false;
}
if (triggerMode == MODE.rising.toString() &&
prevY < _trigger &&
currY >= _trigger &&
prevY < trigger &&
currY >= trigger &&
increasing) {
isTriggered = true;
} else if (triggerMode == MODE.falling.toString() &&
prevY > _trigger &&
currY <= _trigger &&
prevY > trigger &&
currY <= trigger &&
!increasing) {
isTriggered = true;
} else if (triggerMode == MODE.dual.toString() &&
(prevY < _trigger && currY >= _trigger && increasing) ||
(prevY > _trigger && currY <= _trigger && !increasing)) {
(prevY < trigger && currY >= trigger && increasing) ||
(prevY > trigger && currY <= trigger && !increasing)) {
isTriggered = true;
}
if (isTriggered) {
Expand Down Expand Up @@ -431,17 +483,21 @@ class OscilloscopeStateProvider extends ChangeNotifier {

dataEntries = List.from(entries);
dataParamsChannels = List.from(paramsChannels);
if (isFourierTransformSelected) {
oscillscopeAxesScale.setYAxisScaleMax(_maxAmp);
oscillscopeAxesScale.setYAxisScaleMin(0);
oscillscopeAxesScale.setXAxisScale(_maxFreq * 1000);
} else {
oscillscopeAxesScale.setYAxisScaleMax(oscillscopeAxesScale.yAxisScale);
oscillscopeAxesScale.setYAxisScaleMin(-oscillscopeAxesScale.yAxisScale);
oscillscopeAxesScale.setXAxisScale(timebase);
}
notifyListeners();
} catch (e) {
logger.e(e);
}
}

void setYAxisScale(double range) {
_yAxisScale = range;
notifyListeners();
}

void setTimebaseDivisions(int divisions) {
_timebaseDivisions = divisions;
notifyListeners();
Expand Down Expand Up @@ -483,31 +539,6 @@ class OscilloscopeStateProvider extends ChangeNotifier {
notifyListeners();
}

double getTimebaseInterval() {
switch (timebase) {
case 875.00:
return 100;
case 1000.00:
return 0.2;
case 2000.00:
return 0.3;
case 4000.00:
return 0.7;
case 8000.00:
return 1;
case 25600.00:
return 4;
case 38400.00:
return 10;
case 51200.00:
return 10;
case 102400.00:
return 20;
default:
return 100;
}
}

List<LineChartBarData> createLineBarsData() {
List<Color> colors = [
Colors.cyan,
Expand Down
30 changes: 20 additions & 10 deletions lib/view/widgets/channel_parameters_widget.dart
View file
Original file line number Diff line number Diff line change
Expand Up @@ -86,34 +86,44 @@ class _ChannelParametersState extends State<ChannelParametersWidget> {
onSelected: (String? value) {
switch (yAxisRanges.indexOf(value!)) {
case 0:
oscilloscopeStateProvider.setYAxisScale(16);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(16);
break;
case 1:
oscilloscopeStateProvider.setYAxisScale(8);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(8);
break;
case 2:
oscilloscopeStateProvider.setYAxisScale(4);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(4);
break;
case 3:
oscilloscopeStateProvider.setYAxisScale(3);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(3);
break;
case 4:
oscilloscopeStateProvider.setYAxisScale(2);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(2);
break;
case 5:
oscilloscopeStateProvider.setYAxisScale(1.5);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(1.5);
break;
case 6:
oscilloscopeStateProvider.setYAxisScale(1);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(1);
break;
case 7:
oscilloscopeStateProvider.setYAxisScale(0.5);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(0.5);
break;
case 8:
oscilloscopeStateProvider.setYAxisScale(160);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(160);
break;
default:
oscilloscopeStateProvider.setYAxisScale(16);
oscilloscopeStateProvider.oscillscopeAxesScale
.setYAxisScale(16);
break;
}
oscilloscopeStateProvider.oscillscopeRangeSelection =
Expand Down
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