From: kusy <kusy>
Date: Wed, 23 Jul 2008 20:34:41 +0000 (+0000)
Subject: added matlab script that calculates mean timesync error and updated doc
X-Git-Tag: release_tinyos_2_1_0_0~40
X-Git-Url: https://oss.titaniummirror.com/gitweb/?p=tinyos-2.x.git;a=commitdiff_plain;h=9ec90e277050bf02b527ef38d3cd1cb89c6c1585

added matlab script that calculates mean timesync error and updated doc
---

diff --git a/apps/tests/TestFtsp/FtspDataAnalyzer.m b/apps/tests/TestFtsp/FtspDataAnalyzer.m
new file mode 100644
index 00000000..94dda15f
--- /dev/null
+++ b/apps/tests/TestFtsp/FtspDataAnalyzer.m
@@ -0,0 +1,60 @@
+%load file written out by FtspDataLogger.java class
+%arg0 - filename, e.g. '1205543689171.report'
+function FTSPDataAnalyzer(file, varargin)
+[c1 c2 c3 c4 c5]= textread(file, '%u %u %u %u %u', 'commentstyle', 'shell');
+data = [c2 c3 c4 c5]; %skipping the first column (java time)
+data1 = sortrows(sortrows(data,1),2);
+newdata = [];
+
+row=1;
+newrow=1;
+unsynced=0;
+while (row<=size(data1,1))
+
+    seqnum=data1(row,2);
+
+    data2=[];
+    row2=1;
+    tmprow1=row;
+    while (row <= size(data1,1) && data1(row,2)==seqnum)
+        if (data1(row,4)==0)
+            data2(row2,1)=data1(row,3);
+            row2= row2+ 1;
+        else
+            unsynced=unsynced+1;
+        end
+        row = row + 1;
+    end
+    
+    if (row2>1)
+        row2size=row2-1;
+        rcvdsize=row-tmprow1;
+        newdata(newrow,1) = seqnum;
+        newdata(newrow,2) = mad(data2(1:row2size,1));
+        newdata(newrow,3) = mean(data2(1:row2size,1));
+        newdata(newrow,4) = row2size/rcvdsize;
+        newrow = newrow + 1;
+    end
+end
+
+if (length(newdata)==0)
+    disp('no data found (at least one data point from a synchronized mote is required)!');
+else
+    newsize=newrow-1;
+    subplot(3,1,1);
+    plot(newdata(1:newsize,1),newdata(1:newsize,2));
+    title(sprintf('TimeSync Errors'));
+    subplot(3,1,2);
+    plot(newdata(1:newsize,1),newdata(1:newsize,3));
+    title(sprintf('Avg Glob Time'));
+    subplot(3,1,3);
+    plot(newdata(1:newsize,1),newdata(1:newsize,4),'b-');
+    title(sprintf('%% Synced Motes'));
+
+    disp(sprintf('total unsycned num %d (all %d)',unsynced,newsize));
+    disp(sprintf('avg %0.3f',mean(newdata(1:newsize,2))));
+    disp(sprintf('max %d',max(newdata(1:newsize,2))));
+    savedata = newdata(1:newsize,:);
+    save data.out savedata -ASCII;
+end
+    
\ No newline at end of file
diff --git a/apps/tests/TestFtsp/README.txt b/apps/tests/TestFtsp/README.txt
index 23ca3644..b011bc39 100644
--- a/apps/tests/TestFtsp/README.txt
+++ b/apps/tests/TestFtsp/README.txt
@@ -86,3 +86,8 @@ is what it looks like when node 1 in the earlier trace is reset:
 1214516498277 5 10964 445705 0
 1214516498285 1 10964 445707 0
 1214516498521 1 10965 445964 0
+
+This output is also saved in a file named 'current_timestamp.report'.
+'.report' files can be used with the FtspDataAnalyzer.m Matlab
+application. Mean absolute timesync error, global time, and % of
+synced motes will be plotted.