249 lines
10 KiB
TeX
249 lines
10 KiB
TeX
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\documentclass[a4paper,fontsize=14bp]{article}
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\input{../common-preamble}
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\input{../bmstu-preamble}
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\input{../fancy-listings-preamble}
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\setcounter{secnumdepth}{0}
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\numerationTop
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\begin{document}
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\thispagestyle{empty}
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\makeBMSTUHeader
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% ... работе, номер, тема, предмет, ?а, кто
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\makeReportTitle{лабораторной}{2}{Исследование процессов обработки сигналов}{Микропроцессорные устройства обработки сигналов}{}{А.И. Германчук}
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\newpage
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\thispagestyle{empty}
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\tableofcontents
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\newpage
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\pagestyle{fancy}
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\section{Цель}
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Целью работы является изучение стандартных процедур обработки сигналов и данных, а также их реализация в интегрированной среде проектирования Code Composer Studio версии 5 и на микропроцессоре TMS320C5515 компании Texas Instruments Incorporated. При выполнении лабораторной работы используется симулятор микропроцессора TMS320C5515 или оценочноя плата TMS320C5515 DSP Evaluation Module (TMDXEVM5515).
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\section{Выполнение}
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Индивидуальным заданием было написание функции вычисления арктангенса числа: \code{ushort atan16(DATA *x, DATA *r, ushort nx)}.
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\section{Результаты работы}
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После запуска проверочной программы (\hrf{code:prog-c}) представленной в приложении \hrf{appendix:fulls} было доказано совпадение результатов библиотечной функции (листинг \hrf{code:std-asm}) и описанной в дизассемблированном листинге \hrf{code:asm}. Результаты работы профилировщика отражены в таблице \hrf{table:profiler}. Снимки экрана, демонстрирующие идентичность полученных результатов представлены на рис. \hrf{pic:result}.
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\begin{table}[H]
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\centering
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\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|}
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\hline
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Name & Calls & EC Av & EC Ttl & IC Av & IC Ttl & File \\
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\hline
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atan(short *, short *, int) & 1 & 969.0 & 969.0 & 3384.0 & 3384.0 & main.c \\
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\hline
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null() & 1 & 49.0 & 49.0 & 49.0 & 49.0 & atan16.asm \\
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\hline
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\end{tabular}
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\caption{Результат работы профилировщика}
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\label{table:profiler}
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\end{table}
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\begin{figure}[H]
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\centering
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\includegraphics[width=12cm]{02lab-rpt-1.png}
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\caption{Результат вычислений}
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\label{pic:result}
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\end{figure}
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\newpage
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\printbibliography[heading=bibintoc, title={Список литературы}, resetnumbers=1]
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\newpage
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\appendix
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\section*{Приложения}
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\addcontentsline{toc}{section}{Приложения}
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\renewcommand{\thesubsection}{\Alph{subsection}}
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\subsection{Полные листинги программ}
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\label{appendix:fulls}
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\begin{lstlisting}[style=ASMStyle,caption={Стандартный ассемблерный листинг}, label=code:std-asm]
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_atan16:
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;* AR0 assigned to _x
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;* AR1 assigned to _r
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;* T0 assigned to _nx
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PSH T3
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|| BSET FRCT ;fractional mode
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SUB #1, T0 ;nx-1
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MOV T0, BRC0 ;repeat nx times
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MOV #2596 << #16, AC3 ; AC3.Hi = C5
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MOV #-9464 << #16, AC1 ; AC1.Hi = C3
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MOV #32617 << #16, AC2 ; AC2.Hi = C1
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MPYMR T3=*AR0+, AC3, AC0 ; (Prime the Pump)
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|| RPTBLOCAL loop1-1
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MACR AC0, T3, AC1, AC0
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MPYR T3, AC0
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||MOV *AR0+, T1 ; (for next iteration)
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MACR AC0, T3, AC2, AC0
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MPYR T3, AC0
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||MOV T1, T3
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MOV HI(AC0), *AR1+ ;save result
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||MPYR T1, AC3, AC0 ; (for next iteration)
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loop1:
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POP T3
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|| BCLR FRCT ;return to standard C
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MOV #0, T0 ;return OK value (no possible error)
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|| RET
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\end{lstlisting}
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\newpage
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\begin{lstlisting}[language=C,style=CCodeStyle,caption={Программа на языке С}, label=code:prog-c]
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#include "TMS320.h"
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#define NX 7
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#define FNAME "t1"
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#define MAXERROR 40
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ushort atan16(DATA *x, DATA *r, ushort nx);
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short atan(DATA *x, DATA *r, int nx) {
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long long ac3 = ((long long) 2596) << 16; // AC3.Hi = C5 0.0396118164062500
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long long ac1 = ((long long) -9464) << 16; // AC1.Hi = C3 -0.1444091796875000
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long long ac2 = ((long long) 32617) << 16; // AC2.Hi = C1 0.4976959228515625
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while (--nx >= 0) {
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long long ac0;
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DATA t3 = *(x + nx);
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ac0 = (t3 * (ac3 >> 15)) << 1; // MPYMR T3=*AR0+, AC3, AC0
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ac0 = ((ac0 >> 15) * t3) + ac1; // MACR AC0, T3, AC1, AC0
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ac0 = ((ac0 >> 15) * t3); // MPYR T3, AC0
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ac0 = ((ac0 >> 15) * t3) + ac2; // MACR AC0, T3, AC2, AC0
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ac0 = ((ac0 >> 15) * t3); // MPYR T3, AC0
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*(r + nx) = ac0 >> 16; // MOV HI(AC0), *AR1+
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}
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return 0;
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}
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int main(void) {
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DATA x[NX] = {8192,16384,24576,32767,-8192,-16384,-24576};
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DATA rtest[NX] ={8027,15192,21086,25735,-8028,-15193,-21087};
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DATA r[NX];
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DATA r0[NX];
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(void)atan16(x, r0, NX);
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atan(x, r, NX);
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return 0;
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}
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\end{lstlisting}
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\newpage
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\begin{lstlisting}[style=ASMStyle,caption={Дизассемблированная программа}, label=code:asm]
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atan:
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4ee9 AADD #-23,SP
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c408 MOV T0,*SP(#04h)
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eb0495 MOV XAR1,dbl(*SP(#02h))
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eb0085 MOV XAR0,dbl(*SP(#00h))
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long long ac3 = ((long long) 2596) << 16;
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7a0a240a MOV #2596 << #16,AC0
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46a3_110700 BSET ST1_M40 || SFTL AC0,#0,AC0
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104720 SFTL AC0,#-32,AC1
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eb0c18 MOV AC1,dbl(*SP(#06h))
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eb1008 MOV AC0,dbl(*SP(#08h))
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long long ac1 = ((long long) -9464) << 16;
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7adb080a MOV #-9464 << #16,AC0
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104720 SFTL AC0,#-32,AC1
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eb1418 MOV AC1,dbl(*SP(#0ah))
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eb1808 MOV AC0,dbl(*SP(#0ch))
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long long ac2 = ((long long) 32617) << 16;
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7a7f690a_47a2 MOV #32617 << #16,AC0 || BCLR ST1_M40
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46a3_110700 BSET ST1_M40 || SFTL AC0,#0,AC0
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104720 SFTL AC0,#-32,AC1
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eb1c18 MOV AC1,dbl(*SP(#0eh))
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eb2008 MOV AC0,dbl(*SP(#10h))
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while (--nx >= 0)
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a908 MOV *SP(#04h),AR1
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4219 SUB #1,AR1
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c908 MOV AR1,*SP(#04h)
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6d2900d6 BCC C$DW$L$_atan$2$E,AR1 < #0
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DATA t3 = *(x + nx);
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2294 MOV AR1,T0
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ed00bf MOV dbl(*SP(#00h)),XAR3
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a96b MOV *AR3(T0),AR1
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c92c MOV AR1,*SP(#16h)
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ac0 = (t3 * (ac3 >> 15)) << 1;
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ed1018 MOV dbl(*SP(#08h)),AC1
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ed0c28 MOV dbl(*SP(#06h)),AC2
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c21a_98 MOV AC2,mmap(@AC1G)
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a02c MOV *SP(#16h),AC0
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46a2_115531 BCLR ST1_M40 || SFTS AC1,#-15,AC1
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6c00207d CALL _mpylli
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46a3 BSET ST1_M40
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4450 SFTS AC0,#1
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104720 SFTL AC0,#-32,AC1
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eb2418 MOV AC1,dbl(*SP(#12h))
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eb2808 MOV AC0,dbl(*SP(#14h))
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ac0 = ((ac0 >> 15) * t3) + ac1;
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ed2808 MOV dbl(*SP(#14h)),AC0
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ed2418 MOV dbl(*SP(#12h)),AC1
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c114_98 MOV AC1,mmap(@AC0G)
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a12c MOV *SP(#16h),AC1
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46a2_110531 BCLR ST1_M40 || SFTS AC0,#-15,AC0
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6c00207d CALL _mpylli
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ed1428 MOV dbl(*SP(#0ah)),AC2
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ed1818 MOV dbl(*SP(#0ch)),AC1
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c21a_98 MOV AC2,mmap(@AC1G)
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46a3 BSET ST1_M40
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2401 ADD AC0,AC1
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101720 SFTL AC1,#-32,AC0
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eb2408 MOV AC0,dbl(*SP(#12h))
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eb2818 MOV AC1,dbl(*SP(#14h))
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ac0 = ((ac0 >> 15) * t3);
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ed2418 MOV dbl(*SP(#12h)),AC1
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ed2808 MOV dbl(*SP(#14h)),AC0
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c114_98 MOV AC1,mmap(@AC0G)
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a12c MOV *SP(#16h),AC1
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46a2_110531 BCLR ST1_M40 || SFTS AC0,#-15,AC0
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6c00207d CALL _mpylli
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46a3 BSET ST1_M40
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104720 SFTL AC0,#-32,AC1
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eb2418 MOV AC1,dbl(*SP(#12h))
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eb2808 MOV AC0,dbl(*SP(#14h))
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ac0 = ((ac0 >> 15) * t3) + ac2;
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ed2808 MOV dbl(*SP(#14h)),AC0
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ed2418 MOV dbl(*SP(#12h)),AC1
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c114_98 MOV AC1,mmap(@AC0G)
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a12c MOV *SP(#16h),AC1
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46a2_110531 BCLR ST1_M40 || SFTS AC0,#-15,AC0
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6c00207d CALL _mpylli
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ed1c28 MOV dbl(*SP(#0eh)),AC2
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ed2018 MOV dbl(*SP(#10h)),AC1
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c21a_98 MOV AC2,mmap(@AC1G)
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46a3 BSET ST1_M40
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2401 ADD AC0,AC1
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101720 SFTL AC1,#-32,AC0
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eb2408 MOV AC0,dbl(*SP(#12h))
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eb2818 MOV AC1,dbl(*SP(#14h))
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ac0 = ((ac0 >> 15) * t3);
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ed2418 MOV dbl(*SP(#12h)),AC1
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ed2808 MOV dbl(*SP(#14h)),AC0
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c114_98 MOV AC1,mmap(@AC0G)
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a12c MOV *SP(#16h),AC1
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46a2_110531 BCLR ST1_M40 || SFTS AC0,#-15,AC0
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6c00207d CALL _mpylli
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46a3 BSET ST1_M40
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104720 SFTL AC0,#-32,AC1
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eb2418 MOV AC1,dbl(*SP(#12h))
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eb2808 MOV AC0,dbl(*SP(#14h))
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*(r + nx) = ac0 >> 16;
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a408 MOV *SP(#04h),T0
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ed04bf MOV dbl(*SP(#02h)),XAR3
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ed2418 MOV dbl(*SP(#12h)),AC1
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ed2808 MOV dbl(*SP(#14h)),AC0
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c114_98 MOV AC1,mmap(@AC0G)
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bc6b MOV HI(AC0),*AR3(T0)
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a908 MOV *SP(#04h),AR1
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4219 SUB #1,AR1
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c908 MOV AR1,*SP(#04h)
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6d59ff2a BCC C$L1,AR1 >= #0
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return 0;
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\end{lstlisting}
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\end{document}
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