Scans through the D/A converter values, and copies a set of A/D converter readings to a file on USB local filesystem. Connect pin 18 to pin 17.
Diff: overview.cpp
- Revision:
- 1:d9d6cf136120
diff -r 4414657a2618 -r d9d6cf136120 overview.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/overview.cpp Fri Dec 10 05:56:45 2010 +0000 @@ -0,0 +1,44 @@ +% matlab code to plot results (multiple files): + +fs={'OUT.TXT' + 'OUTPSU.TXT' + 'OUTUSBtiedgnd.TXT' + 'OUTPSUtiedgnd.TXT' + 'OUTUSBlongwait.TXT' + 'OUTPSUlongwait.TXT' + 'OUTUSBtiedgndlongwait.TXT' + 'OUTPSUtiedgndlongwait.TXT'}; +clear d +for i=1:numel(fs), + fh=fopen(fs{i},'r'); + d(:,:,i)=fix(fread(fh,[100,1024],'uint16')/16); + fclose(fh); +end + +%all the measurements as dots: +figure +m=0:1023; +m=repmat(m*4,[size(d,1),1,size(d,3)]); +c='rgbmrgbm'; +for i=5:8, + plot(m(:,:,i),d(:,:,i),[c(i) '.']); hold on +end +axis tight + +%statistics: +d=reshape(d,100*1024,8); +m=reshape(m,100*1024,8); +m=m+median(d(:)-m(:)); +top=(d>4096-6 & m<4096-100); +bottom=(d<6 & m>100); +above=(d>m+100 & d<=4096-6); +below=(d<m-100 & d>=6); +bar(0:7,[sum(bottom); sum(below); sum(above); sum(top)]','stacked') + +figure +plot(m,d,'k.'); hold on +plot(m(top),d(top),'r.'); hold on +plot(m(above),d(above),'y.'); hold on +plot(m(below),d(below),'c.'); hold on +plot(m(bottom),d(bottom),'b.'); hold on +axis tight