HackRF input: link Tx frequency button and setting

plugins/samplesource/hackrfinput/hackrfinput.cpp

@@ -432,6 +432,8 @@ bool HackRFInput::applySettings(const HackRFInputSettings& settings, bool force)
 		m_deviceAPI->getDeviceInputMessageQueue()->push(notif);
 	}
 
+	m_settings.m_linkTxFrequency = settings.m_linkTxFrequency;
+
     qDebug() << "HackRFInput::applySettings: center freq: " << m_settings.m_centerFrequency << " Hz"
             << " device center freq: " << deviceCenterFrequency << " Hz"
             << " device sample rate: " << m_settings.m_devSampleRate << "S/s"

plugins/samplesource/hackrfinput/hackrfinputgui.cpp

@@ -250,6 +250,12 @@ void HackRFInputGui::on_iqImbalance_toggled(bool checked)
 	sendSettings();
 }
 
+void HackRFInputGui::on_linkTxFreq_toggled(bool checked)
+{
+    m_settings.m_linkTxFrequency = checked;
+    sendSettings();
+}
+
 void HackRFInputGui::on_bbFilter_currentIndexChanged(int index)
 {
     int newBandwidth = HackRFBandwidths::getBandwidth(index);

plugins/samplesource/hackrfinput/hackrfinputgui.h

@@ -83,6 +83,7 @@ private slots:
 	void on_LOppm_valueChanged(int value);
 	void on_dcOffset_toggled(bool checked);
 	void on_iqImbalance_toggled(bool checked);
+    void on_linkTxFreq_toggled(bool checked);
 	void on_biasT_stateChanged(int state);
 	void on_decim_currentIndexChanged(int index);
 	void on_fcPos_currentIndexChanged(int index);

plugins/samplesource/hackrfinput/hackrfinputgui.ui

@@ -253,7 +253,7 @@
        </property>
       </widget>
      </item>
-     <item row="0" column="4">
+     <item row="0" column="5">
       <widget class="QCheckBox" name="biasT">
        <property name="toolTip">
         <string>Activate antenna bias tee</string>
@@ -266,7 +266,7 @@
        </property>
       </widget>
      </item>
-     <item row="0" column="5">
+     <item row="0" column="6">
       <widget class="QCheckBox" name="lnaExt">
        <property name="toolTip">
         <string>Extra LNA +14dB</string>
@@ -292,6 +292,20 @@
        </property>
       </spacer>
      </item>
+     <item row="0" column="4">
+      <widget class="ButtonSwitch" name="linkTxFreq">
+       <property name="toolTip">
+        <string>Toggle Tx frequency link</string>
+       </property>
+       <property name="text">
+        <string>...</string>
+       </property>
+       <property name="icon">
+        <iconset resource="../../../sdrbase/resources/res.qrc">
+         <normaloff>:/link.png</normaloff>:/link.png</iconset>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>

plugins/samplesource/hackrfinput/hackrfinputsettings.cpp

@@ -39,6 +39,7 @@ void HackRFInputSettings::resetToDefaults()
 	m_dcBlock = false;
 	m_iqCorrection = false;
 	m_devSampleRate = 2400000;
+	m_linkTxFrequency = false;
 }
 
 QByteArray HackRFInputSettings::serialize() const
@@ -56,6 +57,7 @@ QByteArray HackRFInputSettings::serialize() const
 	s.writeBool(10, m_dcBlock);
 	s.writeBool(11, m_iqCorrection);
 	s.writeU64(12, m_devSampleRate);
+    s.writeBool(13, m_linkTxFrequency);
 
 	return s.final();
 }
@@ -86,6 +88,7 @@ bool HackRFInputSettings::deserialize(const QByteArray& data)
 		d.readBool(10, &m_dcBlock, false);
 		d.readBool(11, &m_iqCorrection, false);
 		d.readU64(12, &m_devSampleRate, 2400000U);
+        d.readBool(11, &m_linkTxFrequency, false);
 
 		return true;
 	}

plugins/samplesource/hackrfinput/hackrfinputsettings.h

@@ -38,6 +38,7 @@ struct HackRFInputSettings {
 	bool m_lnaExt;
 	bool m_dcBlock;
 	bool m_iqCorrection;
+	bool m_linkTxFrequency;
 
 	HackRFInputSettings();
 	void resetToDefaults();

sdrbase/resources/res.qrc

@@ -78,5 +78,6 @@
         <file>filter_bandpass.png</file>
         <file>stream.png</file>
         <file>antenna.png</file>
+        <file>link.png</file>
     </qresource>
 </RCC>