From 19707bf4e1198c7734d668788323c024b4595a4f Mon Sep 17 00:00:00 2001
From: manjaro <manjaro@archlinux.com>
Date: Sun, 20 Jun 2021 10:54:18 +0100
Subject: [PATCH] syn is not good

---
 sdr_deepdetect/sdd_reciever/main.cpp | 61 ++++++++++++++++------------
 1 file changed, 35 insertions(+), 26 deletions(-)

diff --git a/sdr_deepdetect/sdd_reciever/main.cpp b/sdr_deepdetect/sdd_reciever/main.cpp
index 10b0078..a145b5c 100644
--- a/sdr_deepdetect/sdd_reciever/main.cpp
+++ b/sdr_deepdetect/sdd_reciever/main.cpp
@@ -30,7 +30,8 @@ std::atomic<int> curr_deal = 0;
 
 //Sample rate in Hz
 double sprate		=  240000 ;
-std::atomic<bool> syn = false;
+const int searchRange = 1001;
+std::atomic<int> syn = searchRange/10;
 //消费者线程，for rx
 void dealer();
 int runRecieve()
@@ -173,7 +174,7 @@ int runRecieve()
 			memcpy(dest, src , copyto * sizeof(SPTYPE) * 2 );
 			total_red = copyto;
 			curr_active = 1 - curr_active;
-			if (!syn)
+			if (syn>3)
 			{
 				rx_stream_cmd.stream_mode = UHD_STREAM_MODE_STOP_CONTINUOUS;
 				UHD_DO(uhd_rx_streamer_issue_stream_cmd(rx_streamer, &rx_stream_cmd));
@@ -184,7 +185,6 @@ int runRecieve()
 				}
 				rx_stream_cmd.stream_mode = UHD_STREAM_MODE_START_CONTINUOUS;
 				UHD_DO(uhd_rx_streamer_issue_stream_cmd(rx_streamer, &rx_stream_cmd));
-
 			}
 		}
 	}
@@ -200,31 +200,33 @@ int runRecieve()
 
 
 }
+
 void runDeal()
 {
 	const int DealEnd = READ_BUF_SIZE - WAVSIZE;
-	const int steps = 201;
-	float  (*cross[steps])[2][2] ;
-	for (int i=0;i<steps;++i)
+	float  (*cross[searchRange])[2][2] ;
+	for (int i=0;i<searchRange;++i)
 		cross[i] = new float[DealEnd][2][2];
 
-	float  (*judge[steps])[2] ;
-	for (int i=0;i<steps;++i)
+	float  (*judge[searchRange])[2] ;
+	for (int i=0;i<searchRange;++i)
 		judge[i] = new float[DealEnd][2];
 
-	float  (*freq_mv[steps])[2];
-	for (int i=0;i<steps;++i)
+	float  (*freq_mv[searchRange])[2];
+	for (int i=0;i<searchRange;++i)
 		freq_mv[i] = new float[DealEnd][2];
 
-	float  (*sig[steps])[2] ;
-	for (int i=0;i<steps;++i)
+	float  (*sig[searchRange])[2] ;
+	for (int i=0;i<searchRange;++i)
 		sig[i] = new float[DealEnd][2];
 
 
 	const float pi = 3.1415927;
-	for (int df = 0;df<steps;++df)
+
+#pragma omp parallel for
+	for (int df = 0;df<searchRange;++df)
 	{
-		float f = (df-steps/2)*50;
+		float f = (df-searchRange/2.0)*10;
 		for (int pv = 0;pv<DealEnd;++pv)
 		{
 			float t = pv / sprate;
@@ -232,7 +234,7 @@ void runDeal()
 			freq_mv[df][pv][1] = sin(2*pi*f*t);
 		}
 	}
-	int startDF = 0, endDF = steps;
+	int startDF =0, endDF = searchRange;
 	while (!stop_signal_called) {
 		if ((int)curr_active==(int)curr_deal)
 		{
@@ -244,8 +246,9 @@ void runDeal()
 		fprintf(stderr,"Dealing %d\n",deal);
 		float maxAbs = 0;
 		int maxDF = 2;
+		int stp = syn;
 #pragma omp parallel for
-		for (int df = startDF;df<endDF;++df)
+		for (int df = startDF;df<endDF;df+=stp)
 		{
 			//xorr
 #pragma omp simd
@@ -294,25 +297,31 @@ void runDeal()
 		printf ("MaxDF=%d\n",maxDF);
 		for (size_t i=0;i<DealEnd;++i)
 		{
-			if (judge[maxDF][i][0] >= 1000 || judge[maxDF][i][1] >= 1000 )
+			if (judge[maxDF][i][0] >= 5000 || judge[maxDF][i][1] >= 5000 )
 			{
-				if (judge[maxDF][i][0] * 8 < judge[maxDF][i][1])
+				if (judge[maxDF][i][0] * 32 < judge[maxDF][i][1])
 				{
 					printf("%lu:0=%f, 1=%f, 1\n",i,judge[maxDF][i][0],judge[maxDF][i][1]);
 					fflush(stdout);
 					i+=WAVSIZE;
-					startDF = (maxDF - 2)<0?0:(maxDF - 2);
-					endDF = (maxDF + 2)>steps?steps:((maxDF + 2));
-					syn = true;
+					startDF = (maxDF - stp*2)<0?0:(maxDF - stp*2);
+					endDF = (maxDF + stp*2)>searchRange?searchRange:((maxDF + stp*2));
+					if (syn > 3)
+						syn = (endDF - startDF)/10;
+					if (syn<1)
+						syn = 1;
 				}
-				else if (judge[maxDF][i][1] * 8 < judge[maxDF][i][0])
+				else if (judge[maxDF][i][1] * 32 < judge[maxDF][i][0])
 				{
 					printf("%lu:0=%f, 1=%f, 0\n",i,judge[maxDF][i][0],judge[maxDF][i][1]);
 					fflush(stdout);
 					i+=WAVSIZE;
-					startDF = (maxDF - 2)<0?0:(maxDF - 2);
-					endDF = (maxDF + 2)>steps?steps:((maxDF + 2));
-					syn = true;
+					startDF = (maxDF - stp*2)<0?0:(maxDF - stp*2);
+					endDF = (maxDF + stp*2)>searchRange?searchRange:((maxDF + stp*2));
+					if (syn > 3)
+						syn = (endDF - startDF)/10;
+					if (syn<1)
+						syn = 1;
 				}
 			}
 
@@ -320,7 +329,7 @@ void runDeal()
 		//判决
 		curr_deal = 1-deal;
 	}
-	for (int i=0;i<steps;++i)
+	for (int i=0;i<searchRange;++i)
 	{
 		delete [] cross[i];
 		delete [] judge[i];
-- 
GitLab