TrackGen on/off for web

Also RBW fixes - again :(
Turn off track gen when going to IF/RX Sweep modes
External gain/attenuation added to settings, with web/console commands.  menu command still to do

Bandscope.ino

@@ -63,7 +63,7 @@ void initBandscope()
 	old_settingMin = -1;
 	old_startFreq = -1;
 	old_stopFreq = -1;
-	old_ownrbw = -1;
+	old_requiredRBW10 = -1;
 	old_vbw = -1;
 	old_settingAverage = -1;
 	old_settingSpur = -100;

IFsweep.ino

@@ -24,6 +24,15 @@ void initIF_Sweep()
 	tinySA_mode = IF_SWEEP;
 	setting.Mode = tinySA_mode;
 
+// Turn off track gen 
+#ifdef SI_TG_IF_CS
+	tg_if.RxMode();
+#endif				
+
+#ifdef SI_TG_LO_CS
+	tg_lo.RxMode();
+#endif	
+
 	ResetIFsweepMenuStack();			//  Put menu stack back to root level
 
 }
@@ -75,19 +84,6 @@ static uint16_t		chunkIndex;
 			autoSweepFreqStep = ( stopFreq_IF - startFreq_IF ) / displayPoints;
 	 		
 			vbw = autoSweepFreqStep / 1000.0;		// Set the video resolution
-//			ownrbw = ((float) ( stopFreq_IF - startFreq_IF )) /  displayPoints / 1000.0;    // kHz
-//	
-//			if ( ownrbw < 2.6 )						// If it's less than 2.6KHz
-//				ownrbw = 2.6;						// set it to 2.6KHz
-//	
-//			if ( ownrbw > 620.7 )
-//				ownrbw = 620.7;
-//	
-//			if ( ownrbw != old_ownrbw )
-//			{
-//				bandwidth = rcvr.SetRBW ( ownrbw * 10.0, &delaytime );	// Set it in the receiver Si4432
-//				old_ownrbw = ownrbw;
-//			}
 	
 			bandwidth = rcvr.SetRBW ( 106.0, &delaytime );	// Set it in the receiver Si4432.  delaytime is returned
 	

RXsweep.ino

@@ -26,6 +26,16 @@ void initRX_Sweep()
 	tinySA_mode = RX_SWEEP;
 	setting.Mode = tinySA_mode;
 
+// Turn off track gen 
+#ifdef SI_TG_IF_CS
+	tg_if.RxMode();
+#endif				
+
+#ifdef SI_TG_LO_CS
+	tg_lo.RxMode();
+#endif				
+
+
 	ResetRXsweepMenuStack();			//  Put menu stack back to root level
 
 }
@@ -104,7 +114,7 @@ static uint16_t		chunkIndex;
 				wiFiPoints = displayPoints*OVERLAP;
 //			Serial.printf("No of wifiPoints set to %i\n", wiFiPoints);
 
-			pushIFSweepSettings();
+			pushRXSweepSettings();
 #endif    									// #ifdef USE_WIFI
 
 
@@ -136,7 +146,7 @@ static uint16_t		chunkIndex;
 			jsonDocument.clear ();
 			chunkIndex = 0;
 
-			jsonDocument["PreAmp"] = setting.PreampGain;			// Fixed gain
+			jsonDocument["PreAmp"] = setting.PreampGain;			
 			jsonDocument["mType"] = "chunkSweep";
 			jsonDocument["StartIndex"] = 0;
 			jsonDocument["sweepPoints"] = sweepPoints;

SweepLo.ino

@@ -95,21 +95,21 @@ static uint32_t		offsetIF;			// IF frequency offset by half the bandwidth to pos
 			autoSweepFreqStep = ( setting.ScanStop - setting.ScanStart ) / displayPoints;
 	 		
 			vbw = autoSweepFreqStep / 1000.0;		// Set the video resolution
-			ownrbw = setting.Bandwidth10 / 10.0;	// and the resolution bandwidth
+			requiredRBW10 = setting.Bandwidth10;	// and the resolution bandwidth
 	
-			if ( ownrbw == 0.0 )					// If the bandwidth is on "Auto" work out the required RBW
+			if ( requiredRBW10 == 0 )					// If the bandwidth is on "Auto" work out the required RBW
-				ownrbw = ((float) ( setting.ScanStop - setting.ScanStart )) /  290000.0;    // 290 points on display
+				requiredRBW10 = (( setting.ScanStop - setting.ScanStart )) /  29000;    // 290 points on display, kHz
 	
-			if ( ownrbw < 2.6 )						// If it's less than 2.6KHz
+			if ( requiredRBW10 < 26 )						// If it's less than 2.6KHz
-				ownrbw = 2.6;						// set it to 2.6KHz
+				requiredRBW10 = 26;						// set it to 2.6KHz
 	
-			if ( ownrbw > 620.7 )
+			if ( requiredRBW10 > 6207 )
-				ownrbw = 620.7;
+				requiredRBW10 = 6207;
 	
-			if ( ownrbw != old_ownrbw )
+			if ( requiredRBW10 != old_requiredRBW10 )
 			{
-				bandwidth = rcvr.SetRBW ( ownrbw * 10.0, &delaytime );	// Set it in the receiver Si4432
+				bandwidth = rcvr.SetRBW ( requiredRBW10, &delaytime );	// Set it in the receiver Si4432
-				old_ownrbw = ownrbw;
+				old_requiredRBW10 = requiredRBW10;
 			}
 
 /*
@@ -190,7 +190,7 @@ static uint32_t		offsetIF;			// IF frequency offset by half the bandwidth to pos
 		 * How well this works depends on how flat the SAW filter (and SI4432 filter) response is
 		 */
 		if (setting.Spur && spurToggle) {
-			uint32_t IF_Shift = ownrbw * 1000;		// bandwidth in Hz
+			uint32_t IF_Shift = requiredRBW10 * 100;		// bandwidth in Hz
 			if (IF_Shift > MAX_IF_SHIFT)
 				IF_Shift = MAX_IF_SHIFT; 
 			tempIF = offsetIF - IF_Shift;

cmd.cpp

@@ -182,6 +182,7 @@ extern	uint8_t dBmToRSSI ( double dBm );
 		{ "WFGAIN",		  MSG_WFGAIN	},		// Gain for waterfall colours
 		{ "RXSWEEP",	  MSG_RX_SWEEP	},		// Set RX Sweep Mode
 		{ "RXSIGNAL",	  MSG_RXSIGNAL	},		// IF sweep signal frequency
+		{ "EXTGAIN",	  MSG_EXTGAIN	},		// External gain or attenuation
 		{ "",			  MSG_NONE      }		// Unrecognized	command
 	};
 
@@ -219,6 +220,9 @@ void ShowMenu ()
 	Serial.printf  ( "    ATTEN.........Set or get the attenuator setting; currently: %ddB\n", 
 								setting.Attenuate );
 
+	Serial.printf  ( "    EXTGAIN.......Set or get the external gain setting; currently: %ddB\n", 
+								setting.ExternalGain );
+
 	Serial.printf  ( "    SPUR......... Turn Spur Reduction 'ON' or 'OFF'; currently: %s\n", 
 								setting.Spur ? "ON" : "OFF" );
 
@@ -1680,6 +1684,21 @@ uint8_t		reg69;							// Ditto
 			Serial.printf ( "RX Sweep Signal frequency: %s\n", FormatFrequency ( GetRXsweepSigFreq() ));   
       		return true;
 
+/*
+ *  Set external gain or attenuation
+ */
+		case MSG_EXTGAIN:
+			if ( dataLen != 0 )								// Value specified?
+			{
+				tempFloat = atof ( dataBuff );				// Yes
+				SetExtGain( tempFloat );
+				DisplayInfo ();							// Re display the scan
+			}
+
+			Serial.printf ( "External gain: %4.1f\n", setting.ExternalGain );
+			return true;
+			
+			
 
 		default:
 			return false;
@@ -2113,6 +2132,7 @@ int	oldG = setting.Generate;
 
 /*
  *	"SetTracking" - sets the Tracking Generator Mode
+ *	0 = off, 1 = track, 2 = sig gen
  */
 
 void SetTracking ( int8_t m )
@@ -2125,6 +2145,8 @@ int	oldM = trackGenSetting.Mode;
 	{
 		changedSetting = true;
 		WriteTrackGenSettings ();
+		pushSettings (); 
+//		Serial.println("SetTracking - pushSettings");
 	}
 }
 
@@ -2201,6 +2223,21 @@ int oldAtten = setting.Attenuate;
 }
 
 
+/*
+ * 	Set the external gain value
+ * 	+ve for gain, -ve for attenuation
+ */
+void		SetExtGain ( double a )
+{
+	setting.ExternalGain = a;
+}
+
+double		GetExtGain (void )
+{
+	return setting.ExternalGain;
+}
+
+
 /*
  *	"SetStorage" - Saves the results of a scan for comparison to an active one.
  */
@@ -2274,6 +2311,7 @@ int oldOffset = setting.LevelOffset;
 		changedSetting = true;
 		RedrawHisto ();				// Redraw labels and restart sweep with new settings
 		WriteSettings ();
+		pushSettings();
 	}
 }
 
@@ -2297,7 +2335,7 @@ int16_t	tempBw;
 
 	setting.Bandwidth10 = bw;
 
-	bandwidth = rcvr.SetRBW ( tempBw, &delaytime );
+//	bandwidth = rcvr.SetRBW ( tempBw, &delaytime );		//  Not needed as will be done at start of sweep
 	RedrawHisto ();							// Redraw labels and restart sweep with new settings
 
 	if ( setting.Bandwidth10 != oldRBW )	
@@ -2385,6 +2423,7 @@ int oldLevel = setting.Drive;
 		{
 			changedSetting = true;
 			WriteSettings ();
+			pushSettings (); 
 		}
 	}
 }
@@ -2525,11 +2564,34 @@ int oldLevel = trackGenSetting.IF_Drive;
 		{
 			changedSetting = true;
 			WriteTrackGenSettings ();
+			pushSettings (); 
 		}
 	}
 }
 #endif
 
+
+void SetTGPower ( int16_t dBm )
+{
+	//  Add algorithm to set attenuator and IF drive level
+	//  initially limit to just set drive levels
+	//  TG Output = IF output - mixer loss - attenuator pads
+	int16_t pathLoss = 10; //6.9 mixer + 3 pad;
+	int16_t maxOut = 20 - pathLoss;
+	int16_t minOut = 1 - pathLoss;
+
+	if (dBm > maxOut)
+		dBm = maxOut;
+	if (dBm < minOut)
+		dBm = minOut;
+
+	uint8_t level = ( dBm + pathLoss + 1 ) / 3;
+	Serial.printf("Set TG power - req dBm %i - level set to %i\n", dBm, level);
+
+	trackGenSetting.Power = dBm;	// saved in SetTGIFDrive
+	SetTGIfDrive ( level );
+}
+
 /*
  * Set Tracking generator IF offset from main SA IF
  * Ideally TG IF should be outside bandwidth of main RX

cmd.h

@@ -77,6 +77,7 @@
 #define MSG_WFGAIN		48		// set the gain for waterfall colouring
 #define MSG_RX_SWEEP    49		// Set the RX Sweep Mode
 #define MSG_RXSIGNAL    50		// Set frequency of injected signal for IF Sweep
+#define MSG_EXTGAIN     51		// Set external gain or attenuation
 
 #define MSG_COLOURTEST  99		// test of waterfall colours - remove this when done!
 
@@ -146,9 +147,13 @@ void		SetTGLoDrive ( uint8_t level );		// set tracking generator drive
 void		SetTGIfDrive ( uint8_t level );
 bool		SetTGOffset	 ( int32_t offset);		// set tracking generator offset - returns false if invalid
 int32_t		GetTGOffset (void );
+void 		SetTGPower ( int16_t dBm );			// Set TG attenuator and drive levels
 
 void		SetAttenuation ( int a );			// Sets the PE4302 attenuation
 
+void		SetExtGain ( double a );				// Sets the external gain or attenuation
+double		GetExtGain (void );
+
 void		SetStorage ( void );				// Saves the results of a scan
 void		SetClearStorage ( void );			// Logically erases the saved scan
 void		SetSubtractStorage(void);			// Sets the "setting.SubtractStorage" flag

data/index.html

@@ -140,7 +140,16 @@
 			</div>
 		</div>
         <br />
-    	<div id="signal_info">
+		<div id="tracking">
+    		<div class="setting" >
+                <label class="setting-label">Tracking Generator:</label>
+                <input class="value-input" type="checkbox" id="trackGen" size="1" value="0" />
+				<input class="value-input" type="number" id="setTrackGenPower" placeholder="setTrackGenPower" maxlength = "9" min="-60" max="20" value="0" />
+           dBm
+			</div>
+		</div>
+        <br />
+     	<div id="signal_info">
     		<div class="setting" >
                 <label class="setting-label">Points:</label>
                 <input class="value-display" type="text" disabled="1" id="sweepPoints" size="1" value="65000" />
@@ -271,6 +280,9 @@ var setDrive = document.getElementById('setLODrive');
 var setIF = document.getElementById('setIF');
 var setPreAmp = document.getElementById('setPreAmp');
 var setAverage = document.getElementById('Average');
+var setTrackGen = document.getElementById('trackGen');
+var setTrackGenPower = document.getElementById('setTrackGenPower');
+
 //var messageWindow = document.getElementById('message');
 
 var tempCenter;
@@ -288,6 +300,8 @@ var oldIF = 0;
 var oldPreAmp = 0;
 var oldSweepPoints = 0;
 var oldSpur = 2;
+var oldTrackGen = 2;
+var oldTrackGenPower = 1000;
 
 // Chart configuration - Scope
 var RSSISamples = [
@@ -479,6 +493,15 @@ setSpur.addEventListener('change', (event) => {
   }
 });
 
+setTrackGen.addEventListener('change', (event) => {
+  if (setTrackGen.checked) {
+    sendValue("t", 1);
+  } else {
+    sendValue("t", 0);
+  }
+});
+
+
 //var roundtripTime = document.getElementById('roundtripTime');
 //var messageCount = document.getElementById('messageCount');
 //var missedReplies = document.getElementById('missedReplies');
@@ -594,6 +617,21 @@ function handleSettings (settings)
 		oldSpur = settings.spur;
 	}
 
+	if (settings.tg != oldTrackGen) {
+		if (settings.tg) {
+			setTrackGen.checked = true;  					// Tracking Generator checkbox                 
+		} else {
+			setTrackGen.checked = false; 		 			// Tracking Generator checkbox                 
+		}
+		oldTrackGen = settings.tg;
+	}
+
+	if (settings.tgPower != oldTrackGenPower) {
+		setTrackGenPower.value = settings.tgPower;
+		oldTrackGenPower = settings.tgPower;
+	}
+
+
 	chartSA.options.axisX.minimum = setStart.value;
 	chartSA.options.axisX.maximum = setStop.value;
 	
@@ -1012,15 +1050,18 @@ function sendValue(c, val)
     // a    start freq (MHz)
     // b    stop frequency
     // c    centre frequency
+	// s 	Span
     // d    Local Oscillator Drive 
     // g    PreAmpGain/Mode 
-    // w    sweep width (stop - start)
+    // p    set actual power to peak value
     // i    IF frequency
-    // R    requested RBW
     // o    RefOut
     // A    internal attenuation (PE4302)
     // E    external gain ( eg attenuator(-ve) or preamp(+ve) )
-    // p    set actual power to peak value
+    // R    requested RBW
+	// S    Spur reduction Off/On
+	// t    trackGen Off/On/Fixed
+	// T 	trackGen output level
     //
 	//connection.send("# " + messageCounter + " " + sampleThreshold + " " + sampleSize);
 	connection.send("#" + c + " " + val);

si4432.cpp

@@ -558,7 +558,7 @@ float Si4432::SetRBW ( float reqBandwidth10, unsigned long* delaytime_p )	// "re
 	if ( reqBandwidth10 <= _bandpassFilters[0].bandwidth10 )
 	{
 		filter = 0; 
-		Serial.print ("Minimum RBW");
+//		Serial.print ("Minimum RBW");
 	}
 	
 /*
@@ -569,7 +569,7 @@ float Si4432::SetRBW ( float reqBandwidth10, unsigned long* delaytime_p )	// "re
 		while (( _bandpassFilters[filter-1].bandwidth10 > reqBandwidth10 - 0.01 ) && ( filter > 0 ))
 			filter--;
 
-	Serial.printf ( "Required = %f, filter = %i\n", reqBandwidth10, filter);	Serial.println ( filter );
+//	Serial.printf ( "Required = %f, filter = %i\n", reqBandwidth10, filter);	Serial.println ( filter );
 
 
 /*

simpleSA.h

@@ -231,6 +231,7 @@ typedef struct {
 	int16_t		MaxGrid			=		-10;		// Default dB for top line of graph (***)
 	int16_t		MinGrid			=	   -110;		// Default dB for bottom line of graph (***)
 	int8_t		Attenuate		= 		  0;		// Attenuator setting (***)
+	double		ExternalGain	=		0.0;		// External gain or attenuation
 	int8_t		Generate		= 		  0;		// Signal generator mode if not zero (***)
 	int16_t		Bandwidth10		= 		  0;		// Resolution Bandwidth setting*10; 0 = auto
 	int16_t		LevelOffset		= 		  0;		// Calibration value (move to config?)

simpleSA.ino

@@ -130,7 +130,7 @@
  *			renamed simpleSA.  Doesn't seem that simple to me!
  *			First go at bandscope mode
  *			VSPI reduced to 10Mhz as some boards will not run at 16MHz
- *			Put onto github - lets see how it works!
+ *			Put onto github - lets see how it works!  Version numbering changed - still in beta!
  *			
  */
 
@@ -427,6 +427,7 @@ extern	void	ShowSplash ( void );		// Displays the splash screen
 
 extern void		pushSettings ();
 extern void		pushIFSweepSettings ();
+extern void		pushRXSweepSettings ();
 extern void		pushBandscopeSettings ();
 
 
@@ -488,8 +489,8 @@ static int		old_settingMax = -1;
 static int		old_settingMin = -1;
 static double	old_startFreq = -1;
 static double	old_stopFreq = -1;
-static int		ownrbw = 0;
+static int		requiredRBW10 = 0;
-static int		old_ownrbw = -1;
+static int		old_requiredRBW10 = -1;
 static int		vbw = 0;
 static int		old_vbw = -1;
 static int		old_settingAverage = -1;
@@ -1081,7 +1082,7 @@ void init_sweep()
 	old_settingMin = -1;
 	old_startFreq = -1;
 	old_stopFreq = -1;
-	old_ownrbw = -1;
+	old_requiredRBW10 = -1;
 	old_vbw = -1;
 	old_settingAverage = -1;
 	old_settingSpur = -100;
@@ -1495,7 +1496,7 @@ double fStop;
 		sSprite.printf ( "Attn\n%4i", setting.Attenuate );
 
 		sSprite.setCursor ( 0, HALF_CHAR_H * 28 );		// Start at top-left corner
-		sSprite.printf ( "Ext\n%4.1f", 0.0 );			// Place holder for external gain/attenuation value
+		sSprite.printf ( "Ext\n%4.1f", setting.ExternalGain );			// Place holder for external gain/attenuation value
 		sSprite.setTextColor ( WHITE );
 
 		if ( setting.Average )

simpleSA_wifi.cpp

@@ -55,6 +55,8 @@ extern uint32_t startFreq_IF;
 extern uint32_t stopFreq_IF;
 extern uint32_t sigFreq_IF;
 
+extern uint32_t startFreq_RX;
+extern uint32_t stopFreq_RX;
 
 AsyncWebServer server ( 80 );			// Create the webserver object
 AsyncResponseStream *response;
@@ -271,12 +273,25 @@ void webSocketEvent ( uint8_t num, WStype_t type, uint8_t* payload, size_t paylo
 							SetAttenuation ( value );
 							break;
 
+						case 'E':										// External Gain (+ve) or Attenuation (-ve)      
+							SetExtGain ( value );
+							break;
+
 						case 'R':										// Requested RBW.  0=Auto
 							SetRBW ( value );
+							Serial.printf("Wifi RBW %f\n", value);
 							break;
 
 						case 'S':										// Spur Reduction on/off
-							SetSpur ( value );
+							SetSpur ( (int8_t)value );
+							break;
+
+						case 't':										// Tracking Generator on/off
+							SetTracking ( (int8_t)value );
+							break;
+
+						case 'T':										// Tracking Generator output power (dBm)
+							SetTGPower ( value );
 							break;
 
 						default:
@@ -497,6 +512,7 @@ void onGetSettings (AsyncWebServerRequest *request)
 	root["stop"] = setting.ScanStop / 1000.0;
 	root["IF"] = setting.IF_Freq / 1000000.0;
 	root["attenuation"] = setting.Attenuate;   
+	root["extGain"] = setting.ExternalGain;   
 	root["levelOffset"] = setting.LevelOffset;   
 	root["setRBW"] = setting.Bandwidth10;   
 	root["bandwidth"] = bandwidth;   
@@ -504,6 +520,8 @@ void onGetSettings (AsyncWebServerRequest *request)
 	root["Drive"] = setting.Drive;
 	root["sweepPoints"] = sweepPoints;
 	root["spur"] = setting.Spur;
+	root["tg"] = trackGenSetting.Mode;
+	root["tgPower"] = trackGenSetting.Power;
 
 	if ( AGC_On )
 		root["PreAmp"] = 0x60;  // Auto
@@ -522,8 +540,12 @@ void onGetSettings (AsyncWebServerRequest *request)
  */
 void pushSettings ()
 {
+
+if ( numberOfWebsocketClients == 0 )
+	return;
+	
 size_t capacity = JSON_ARRAY_SIZE ( SCREEN_WIDTH )
-				+ SCREEN_WIDTH*JSON_OBJECT_SIZE ( 2 ) + JSON_OBJECT_SIZE ( 13 );
+				+ SCREEN_WIDTH*JSON_OBJECT_SIZE ( 2 ) + JSON_OBJECT_SIZE ( 16 );
 static DynamicJsonDocument jsonDocument ( capacity );	// buffer for json data to be pushed to the web clients
 
 	jsonDocument["mType"] = "Settings";
@@ -532,6 +554,7 @@ static DynamicJsonDocument jsonDocument ( capacity );	// buffer for json data to
 	jsonDocument["stop"] = setting.ScanStop / 1000.0;
 	jsonDocument["IF"] = setting.IF_Freq / 1000000.0;
 	jsonDocument["attenuation"] = setting.Attenuate;   
+	jsonDocument["extGain"] = setting.ExternalGain;   
 	jsonDocument["levelOffset"] = setting.LevelOffset;   
 	jsonDocument["setRBW"] = setting.Bandwidth10;   
 	jsonDocument["bandwidth"] = bandwidth;   
@@ -539,6 +562,8 @@ static DynamicJsonDocument jsonDocument ( capacity );	// buffer for json data to
 	jsonDocument["Drive"] = setting.Drive;
 	jsonDocument["sweepPoints"] = sweepPoints;
 	jsonDocument["spur"] = setting.Spur;
+	jsonDocument["tg"] = trackGenSetting.Mode;
+	jsonDocument["tgPower"] = trackGenSetting.Power;
 
 	if ( AGC_On )
 		jsonDocument["PreAmp"] = 0x60;					// Auto
@@ -604,6 +629,51 @@ static DynamicJsonDocument jsonDocument ( capacity );	// buffer for json data to
 //	Serial.printf ( "Push Settings sweepPoints %u\n", sweepPoints );
 }
 
+
+/*
+ * Push the settings data to the websocket clients
+ */
+void pushRXSweepSettings ()
+{
+size_t capacity = JSON_ARRAY_SIZE ( SCREEN_WIDTH )
+				+ SCREEN_WIDTH*JSON_OBJECT_SIZE ( 2 ) + JSON_OBJECT_SIZE ( 13 );
+static DynamicJsonDocument jsonDocument ( capacity );	// buffer for json data to be pushed to the web clients
+
+	jsonDocument["mType"] = "Settings";
+	jsonDocument["dispPoints"] = displayPoints;
+	jsonDocument["start"] = startFreq_RX / 1000.0;
+	jsonDocument["stop"] = stopFreq_RX / 1000.0;
+	jsonDocument["IF"] = setting.IF_Freq / 1000000.0;
+	jsonDocument["attenuation"] = setting.Attenuate;   
+	jsonDocument["levelOffset"] = setting.LevelOffset;   
+	jsonDocument["setRBW"] = setting.Bandwidth10;   
+	jsonDocument["bandwidth"] = bandwidth;   
+	jsonDocument["RefOut"] = setting.ReferenceOut;   
+	jsonDocument["Drive"] = setting.Drive;
+	jsonDocument["sweepPoints"] = sweepPoints;
+	jsonDocument["spur"] = setting.Spur;
+
+	if ( AGC_On )
+		jsonDocument["PreAmp"] = 0x60;					// Auto
+
+	else
+		jsonDocument["PreAmp"] = setting.PreampGain;	// Fixed gain
+
+	String wsBuffer;
+
+	if ( wsBuffer )
+	{
+		serializeJson ( jsonDocument, wsBuffer );
+		webSocket.broadcastTXT ( wsBuffer );			//  Send to all connected websocket clients
+	}
+
+	else
+		Serial.println ( "No buffer :(");
+
+//	Serial.printf ( "Push Settings sweepPoints %u\n", sweepPoints );
+}
+
+
 /*
  * Push the settings data to the websocket clients
  */