Texas Instruments AN-2154, Application Report

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Benchmarks
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21 Benchmarks
The benchmarks were obtained with the following compiler settings for the application firmware and the
library.
The Application Firmware:
-v28 -mt -ml -g -O1 -ms --keep_unneeded_statics
The Library:
-v28 -mt -ml --symdebug:none -O1
Table 6. Benchmark for the various routines
Function Cycles Time(ms)
SYSCLK = 60MHz
DoArcDetect 997375 16.6229
– Data acquisition 435179 7.2529
– Time Domain Processing 98311 1.6385
– Frequency Domain Processing 233115 3.8852
—- Bit Reversal(1024 complex) 30224 0.5037
—- FFT(1024 complex) 202887 3.3814
– Data Analysis 230614 3.8435
SelfCheck 432589 7.2098
The user should note that the algorithm makes a determination of whether an arc has occurred or not over
10 iterations of the DoArcDetect routine, therefore, the time per iteration of the algorithm, on average,
should be considered to be 10 times the cycle count for the DoArcDetect routine.
22 Other Resources
The Arc-Detection Evaluation module makes use of the Piccolo line of C2000 devices which you can
check out at the TI Piccolo page:
http://www.ti.com/piccolo
And don’t forget the TI community website: http://e2e.ti.com
Building the Arc Detection library requires Codegen Tools v6.0.1 or later
20 AN-2154 RD-195 DC Arc Detection Evaluation Board SNOA564F – June 2011 – Revised December 2012
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