PlutoSDR MIMO: added missing gain lock button

plugins/samplemimo/plutosdrmimo/plutosdrmimogui.cpp

@@ -758,6 +758,22 @@ void PlutoSDRMIMOGUI::on_lpFIRGain_currentIndexChanged(int index)
     sendSettings();
 }
 
+void PlutoSDRMIMOGUI::on_gainLock_toggled(bool checked)
+{
+    if (!m_gainLock && checked)
+    {
+        m_settings.m_rx1GainMode = m_settings.m_rx0GainMode;
+        m_settings.m_rx1Gain = m_settings.m_rx0Gain;
+        m_settings.m_tx1Att = m_settings.m_rx0Gain;
+        blockApplySettings(true);
+        displaySettings();
+        blockApplySettings(false);
+        sendSettings();
+    }
+
+    m_gainLock = checked;
+}
+
 void PlutoSDRMIMOGUI::on_gainMode_currentIndexChanged(int index)
 {
     if (m_streamIndex == 0)

plugins/samplemimo/plutosdrmimo/plutosdrmimogui.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>382</width>
-    <height>344</height>
+    <width>344</width>
+    <height>320</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -18,8 +18,8 @@
   </property>
   <property name="minimumSize">
    <size>
-    <width>350</width>
-    <height>260</height>
+    <width>344</width>
+    <height>320</height>
    </size>
   </property>
   <property name="font">
@@ -1006,6 +1006,25 @@
        </property>
       </spacer>
      </item>
+     <item>
+      <widget class="QLabel" name="temperatureText">
+       <property name="minimumSize">
+        <size>
+         <width>24</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="toolTip">
+        <string>Board temperature (degrees C)</string>
+       </property>
+       <property name="text">
+        <string>00C</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>
@@ -1016,6 +1035,24 @@
      <property name="bottomMargin">
       <number>2</number>
      </property>
+     <item>
+      <widget class="QToolButton" name="gainLock">
+       <property name="toolTip">
+        <string>Lock both channels gain</string>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+       <property name="icon">
+        <iconset resource="../../../sdrgui/resources/res.qrc">
+         <normaloff>:/unlocked.png</normaloff>
+         <normalon>:/locked.png</normalon>:/unlocked.png</iconset>
+       </property>
+       <property name="checkable">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
      <item>
       <widget class="QComboBox" name="gainMode">
        <property name="maximumSize">
@@ -1218,25 +1255,6 @@
        </property>
       </widget>
      </item>
-     <item>
-      <widget class="QLabel" name="temperatureText">
-       <property name="minimumSize">
-        <size>
-         <width>24</width>
-         <height>0</height>
-        </size>
-       </property>
-       <property name="toolTip">
-        <string>Board temperature (degrees C)</string>
-       </property>
-       <property name="text">
-        <string>00C</string>
-       </property>
-       <property name="alignment">
-        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-       </property>
-      </widget>
-     </item>
     </layout>
    </item>
    <item>

plugins/samplemimo/plutosdrmimo/readme.md

@@ -197,7 +197,15 @@ The FIR filter block can provide a decimation or interpolation by 1 (no decimati
 
 The FIR filter can introduce a gain that can be set to -12, -6, 0 or 6 dB. The FIR has a fixed gain of 6 dB so to maximize dynamic range one would set the gain at -6 dB so that the overall gain is set at 0 dB.
 
-<h3>20: Rx gain mode</h3>
+<h3>20: Board temperature</h3>
+
+This is the board temperature in degrees Celsius updated every ~5s.
+
+<h3>21. Lock both streams gains</h3>
+
+When engaged this applies the same gain controls (22, 23, 25) to both streams (Rx or Tx)
+
+<h3>22: Rx gain mode</h3>
 
 Use this combo to select between gain options:
 
@@ -208,22 +216,18 @@ Use this combo to select between gain options:
 
 See AD9363 documentation for details on AGC options.
 
-<h3>21: Rx global manual gain</h3>
+<h3>23: Rx global manual gain</h3>
 
 Use this button to adjust the global gain manually in manual gain mode. This button is disabled when AGC modes are selected with combo (15).
 
-<h3>22: Actual Rx gain fetched from device</h3>
+<h3>24: Actual Rx gain fetched from device</h3>
 
 This is the actual gain in dB set in the device.
 
-<h4>23: Tx attenuation</h4>
+<h4>25: Tx attenuation</h4>
 
 Use this button to adjust the attenuation. It can be varied from -89.75 to 0 dB in 0.25 dB steps.
 
-<h3>24: Indicative RSSI</h3>
+<h3>26: Indicative RSSI</h3>
 
 This is the indicative RSSI of the receiver.
-
-<h3>25: Board temperature</h3>
-
-This is the board temperature in degrees Celsius updated every ~5s.