DOA2: added button to center frequency position in passband

plugins/channelmimo/doa2/doa2gui.cpp

@@ -387,6 +387,22 @@ void DOA2GUI::on_fftAveraging_currentIndexChanged(int index)
     setFFTAveragingToolitp();
 }
 
+void DOA2GUI::on_centerPosition_clicked()
+{
+    uint32_t filterChainHash = 1;
+    uint32_t mul = 1;
+
+    for (uint32_t i = 1; i < m_settings.m_log2Decim; i++)
+    {
+        mul *= 3;
+        filterChainHash += mul;
+    }
+
+    m_settings.m_filterChainHash = filterChainHash;
+    ui->position->setValue(m_settings.m_filterChainHash);
+    applyPosition();
+}
+
 void DOA2GUI::applyDecimation()
 {
     uint32_t maxHash = 1;
@@ -432,6 +448,7 @@ void DOA2GUI::makeUIConnections()
     QObject::connect(ui->baselineDistance, QOverload<int>::of(&QSpinBox::valueChanged), this, &DOA2GUI::on_baselineDistance_valueChanged);
     QObject::connect(ui->squelch, &QDial::valueChanged, this, &DOA2GUI::on_squelch_valueChanged);
     QObject::connect(ui->fftAveraging, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &DOA2GUI::on_fftAveraging_currentIndexChanged);
+    QObject::connect(ui->centerPosition, &QPushButton::clicked, this, &DOA2GUI::on_centerPosition_clicked);
 }
 
 void DOA2GUI::updateAbsoluteCenterFrequency()

plugins/channelmimo/doa2/doa2gui.h

@@ -106,6 +106,7 @@ private slots:
     void on_baselineDistance_valueChanged(int value);
     void on_squelch_valueChanged(int value);
     void on_fftAveraging_currentIndexChanged(int index);
+    void on_centerPosition_clicked();
     void onWidgetRolled(QWidget* widget, bool rollDown);
     void onMenuDialogCalled(const QPoint& p);
 	void tick();

plugins/channelmimo/doa2/doa2gui.ui

@@ -324,6 +324,22 @@
           </property>
          </widget>
         </item>
+        <item>
+         <widget class="QPushButton" name="centerPosition">
+          <property name="maximumSize">
+           <size>
+            <width>24</width>
+            <height>24</height>
+           </size>
+          </property>
+          <property name="toolTip">
+           <string>Center in passband</string>
+          </property>
+          <property name="text">
+           <string>C</string>
+          </property>
+         </widget>
+        </item>
        </layout>
       </item>
      </layout>
@@ -588,12 +604,21 @@
           </item>
           <item>
            <widget class="QLabel" name="halfWLText">
+            <property name="minimumSize">
+             <size>
+              <width>40</width>
+              <height>0</height>
+             </size>
+            </property>
             <property name="toolTip">
              <string>Half wavelength (mm)</string>
             </property>
             <property name="text">
              <string>00000</string>
             </property>
+            <property name="alignment">
+             <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+            </property>
            </widget>
           </item>
           <item>

plugins/channelmimo/doa2/readme.md

@@ -87,6 +87,10 @@ The slider moves the channel center frequency roughly from the lower to the high
   - **1**: centered
   - **2**: higher half-band
 
+<h3>A.8. Center filter in passband</h3>
+
+Use this button to center the filter in the middle of the passband automatically. This sets all filters to center i.e CCC...
+
 The resulting filter chain sequence is represented in (A.3)
 
 <h2>B. Scope display</h2>