Implement A2L presets and custom threshold handling
[pulseview.git] / pv / views / trace / analogsignal.cpp
index e26b203a2d197aa1161c3d63752ebf0ea3dcdfc9..41c1fba4028f34f53df04f5e970cbdd166e467b0 100644 (file)
@@ -92,7 +92,6 @@ AnalogSignal::AnalogSignal(
        pos_vdivs_(1),
        neg_vdivs_(1),
        resolution_(0),
-       conversion_type_(data::SignalBase::NoConversion),
        display_type_(DisplayBoth),
        autoranging_(true)
 {
@@ -102,6 +101,11 @@ AnalogSignal::AnalogSignal(
        connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
                this, SLOT(on_samples_added()));
 
+       connect(&delayed_conversion_starter_, SIGNAL(timeout()),
+               this, SLOT(on_delayed_conversion_starter()));
+       delayed_conversion_starter_.setSingleShot(true);
+       delayed_conversion_starter_.setInterval(1000);  // 1s timeout
+
        GlobalSettings gs;
        div_height_ = gs.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
 
@@ -119,7 +123,6 @@ void AnalogSignal::save_settings(QSettings &settings) const
        settings.setValue("pos_vdivs", pos_vdivs_);
        settings.setValue("neg_vdivs", neg_vdivs_);
        settings.setValue("scale_index", scale_index_);
-       settings.setValue("conversion_type", conversion_type_);
        settings.setValue("display_type", display_type_);
        settings.setValue("autoranging", autoranging_);
        settings.setValue("div_height", div_height_);
@@ -138,11 +141,6 @@ void AnalogSignal::restore_settings(QSettings &settings)
                update_scale();
        }
 
-       if (settings.contains("conversion_type")) {
-               conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
-               update_conversion_type();
-       }
-
        if (settings.contains("display_type"))
                display_type_ = (DisplayType)(settings.value("display_type").toInt());
 
@@ -243,8 +241,11 @@ void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
        }
 
        if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
-               if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
-                       (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {
+               const data::SignalBase::ConversionType conv_type =
+                       base_->get_conversion_type();
+
+               if (((conv_type == data::SignalBase::A2LConversionByTreshold) ||
+                       (conv_type == data::SignalBase::A2LConversionBySchmittTrigger))) {
 
                        paint_logic_mid(p, pp);
                }
@@ -594,12 +595,48 @@ void AnalogSignal::update_scale()
        scale_ = div_height_ / resolution_;
 }
 
-void AnalogSignal::update_conversion_type()
+void AnalogSignal::update_conversion_widgets()
 {
-       base_->set_conversion_type(conversion_type_);
+       data::SignalBase::ConversionType conv_type = base_->get_conversion_type();
 
-       if (owner_)
-               owner_->row_item_appearance_changed(false, true);
+       // Enable or disable widgets depending on conversion state
+       conv_threshold_cb_->setEnabled(conv_type != data::SignalBase::NoConversion);
+       display_type_cb_->setEnabled(conv_type != data::SignalBase::NoConversion);
+
+       conv_threshold_cb_->clear();
+
+       vector < pair<QString, int> > presets = base_->get_conversion_presets();
+
+       // Prevent the combo box from firing the "edit text changed" signal
+       // as that would involuntarily select the first entry
+       conv_threshold_cb_->blockSignals(true);
+
+       // Set available options depending on chosen conversion
+       for (pair<QString, int> preset : presets)
+               conv_threshold_cb_->addItem(preset.first, preset.second);
+
+       map < QString, QVariant > options = base_->get_conversion_options();
+
+       if (conv_type == data::SignalBase::A2LConversionByTreshold) {
+               const vector<double> thresholds = base_->get_conversion_thresholds(
+                               data::SignalBase::A2LConversionByTreshold, true);
+               conv_threshold_cb_->addItem(
+                               QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
+       }
+
+       if (conv_type == data::SignalBase::A2LConversionBySchmittTrigger) {
+               const vector<double> thresholds = base_->get_conversion_thresholds(
+                               data::SignalBase::A2LConversionBySchmittTrigger, true);
+               conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
+                               QString::number(thresholds[0], 'f', 1),
+                               QString::number(thresholds[1], 'f', 1)), -1);
+       }
+
+       int preset_id = base_->get_current_conversion_preset();
+       conv_threshold_cb_->setCurrentIndex(
+                       conv_threshold_cb_->findData(preset_id));
+
+       conv_threshold_cb_->blockSignals(false);
 }
 
 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
@@ -740,7 +777,7 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
        conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
        conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);
 
-       cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
+       cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
        conversion_cb_->setCurrentIndex(cur_idx);
 
        layout->addRow(tr("Conversion"), conversion_cb_);
@@ -748,12 +785,23 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
        connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_conversion_changed(int)));
 
+    // Add the conversion threshold settings
+    conv_threshold_cb_ = new QComboBox();
+    conv_threshold_cb_->setEditable(true);
+
+    layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
+
+    connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
+            this, SLOT(on_conv_threshold_changed(int)));
+    connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString)),
+            this, SLOT(on_conv_threshold_changed()));  // index will be -1
+
        // Add the display type dropdown
        display_type_cb_ = new QComboBox();
 
        display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
        display_type_cb_->addItem(tr("Converted"), DisplayConverted);
-       display_type_cb_->addItem(tr("Both"), DisplayBoth);
+       display_type_cb_->addItem(tr("Analog+Converted"), DisplayBoth);
 
        cur_idx = display_type_cb_->findData(QVariant(display_type_));
        display_type_cb_->setCurrentIndex(cur_idx);
@@ -763,6 +811,9 @@ void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
        connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_display_type_changed(int)));
 
+       // Update the conversion widget contents and states
+       update_conversion_widgets();
+
        form->addRow(layout);
 }
 
@@ -870,14 +921,97 @@ void AnalogSignal::on_autoranging_changed(int state)
 
 void AnalogSignal::on_conversion_changed(int index)
 {
-       data::SignalBase::ConversionType old_conv_type = conversion_type_;
+       data::SignalBase::ConversionType old_conv_type =
+               base_->get_conversion_type();
+
+       data::SignalBase::ConversionType conv_type =
+               (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
+
+       if (conv_type != old_conv_type) {
+               base_->set_conversion_type(conv_type);
+               update_conversion_widgets();
+
+               if (owner_)
+                       owner_->row_item_appearance_changed(false, true);
+       }
+}
+
+void AnalogSignal::on_conv_threshold_changed(int index)
+{
+       data::SignalBase::ConversionType conv_type = base_->get_conversion_type();
+
+       // Note: index is set to -1 if the text in the combo box matches none of
+       // the entries in the combo box
+
+       if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
+               return;
+
+       // The combo box entry with the custom value has user_data set to -1
+       const int user_data = conv_threshold_cb_->findText(
+                       conv_threshold_cb_->currentText());
 
-       conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
+       const bool use_custom_thr = (index == -1) || (user_data == -1);
 
-       if (conversion_type_ != old_conv_type) {
-               base_->set_conversion_type(conversion_type_);
-               update_conversion_type();
+       if (conv_type == data::SignalBase::A2LConversionByTreshold && use_custom_thr) {
+               // Not one of the preset values, try to parse the combo box text
+               // Note: Regex loosely based on
+               // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
+               QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
+               QString re2 = "([a-zA-Z]*)"; // SI unit
+               QRegExp regex(re1 + re2);
+
+               const QString text = conv_threshold_cb_->currentText();
+               if (!regex.exactMatch(text))
+                       return;  // String doesn't match the regex
+
+               QStringList tokens = regex.capturedTexts();
+
+               // For now, we simply assume that the unit is volt without modifiers
+               const double thr = tokens.at(1).toDouble();
+
+               // Only restart the conversion if the threshold was updated
+               if (base_->set_conversion_option("threshold_value", thr))
+                       delayed_conversion_starter_.start();
+       }
+
+       if (conv_type == data::SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
+               // Not one of the preset values, try to parse the combo box text
+               // Note: Regex loosely based on
+               // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
+               QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
+               QString re2 = "([a-zA-Z]*)"; // SI unit
+               QString re3 = "\\/"; // Forward slash, not captured
+               QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
+               QString re5 = "([a-zA-Z]*)"; // SI unit
+               QRegExp regex(re1 + re2 + re3 + re4 + re5);
+
+               const QString text = conv_threshold_cb_->currentText();
+               if (!regex.exactMatch(text))
+                       return;  // String doesn't match the regex
+
+               QStringList tokens = regex.capturedTexts();
+
+               // For now, we simply assume that the unit is volt without modifiers
+               const double low_thr = tokens.at(1).toDouble();
+               const double high_thr = tokens.at(3).toDouble();
+
+               // Only restart the conversion if one of the options was updated
+               bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
+               bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
+               if (o1 || o2)
+                       delayed_conversion_starter_.start();
        }
+
+       base_->set_conversion_preset(index);
+
+       // Immediately start the conversion if we're not asking for a delayed reaction
+       if (!delayed_conversion_starter_.isActive())
+               base_->start_conversion();
+}
+
+void AnalogSignal::on_delayed_conversion_starter()
+{
+       base_->start_conversion();
 }
 
 void AnalogSignal::on_display_type_changed(int index)