made analyzer more robust

src/TLC59731Analyzer.cpp

@@ -26,6 +26,7 @@ void TLC59731Analyzer::SetupResults()
 void TLC59731Analyzer::WorkerThread()
 {
     mSampleRateHz = GetSampleRate();
+    bool foundLegitStart = false;
 
     mSerial = GetAnalyzerChannelData( mSettings.mInputChannel );
     bool run = 1;
@@ -41,6 +42,14 @@ void TLC59731Analyzer::WorkerThread()
             mSerial->AdvanceToNextEdge(); // wait for rising
         }
 
+        if( !mSerial->WouldAdvancingCauseTransition( NSToSamples( 8 * 50000 ) ) && mSerial->GetBitState() == BIT_HIGH && !foundLegitStart )
+        {
+            // found something, but nothing from frame
+            mSerial->AdvanceToNextEdge();
+            foundLegitStart = true;
+            continue;
+        }
+
         U32 data = 0;
         U32 bitCtr = 1;
         // measure cycletime