(完整word版)DSP課程設(shè)計(jì)__正弦信號(hào)發(fā)生器的設(shè)計(jì) (2)

1、太原理工大學(xué)dsp課程設(shè)計(jì)：正弦信號(hào)發(fā)生器的設(shè)計(jì)學(xué)號(hào)：班級(jí)：姓名：指導(dǎo)教師：一、設(shè)計(jì)目的1、通過實(shí)驗(yàn)掌握dsp的軟件開發(fā)過程2、學(xué)會(huì)運(yùn)用匯編語言進(jìn)行程序設(shè)計(jì)3、學(xué)會(huì)用ccs仿真模擬dsp芯片，通過ccs軟件平臺(tái)上應(yīng)用c54x匯編語言來實(shí)現(xiàn)正弦信號(hào)發(fā)生裝置。二、設(shè)計(jì)原理本實(shí)驗(yàn)產(chǎn)生正弦波的方法是泰勒級(jí)數(shù)展開法。泰勒級(jí)數(shù)展開法需要的存儲(chǔ)單元少，具有穩(wěn)定性好，算法簡(jiǎn)單，易于編程等優(yōu)點(diǎn)，而且展開的級(jí)數(shù)越多，失真度就越小。求一個(gè)角度的正弦值取泰勒級(jí)數(shù)的前5項(xiàng)，得近似計(jì)算式：x3x5x7x9sin(x)=x-+-+3!5!7!9!=x(1-x2(1-x2(1-x2(1-x2)23456789三、總體方案設(shè)計(jì)

2、本實(shí)驗(yàn)是基于ccs開發(fā)環(huán)境的。ccs是ti公司推出的為開發(fā)tms320系列dsp軟件的集成開發(fā)環(huán)境，是目前使用最為廣泛的dsp開發(fā)軟件之一。它提供了環(huán)境配置、源文件編譯、編譯連接、程序調(diào)試、跟蹤分析等環(huán)節(jié)，并把軟、硬件開發(fā)工具集成在一起，使程序的編寫、匯編、程序的軟硬件仿真和調(diào)試等開發(fā)工作在統(tǒng)一的環(huán)境中進(jìn)行，從而加速軟件開發(fā)進(jìn)程。通過ccs軟件平臺(tái)上應(yīng)用c54x匯編語言來實(shí)現(xiàn)正弦信號(hào)發(fā)生裝置。總體思想是：正弦波的波形可以看作由無數(shù)點(diǎn)組成，這些點(diǎn)與x軸的每一個(gè)角度值相對(duì)應(yīng)，可以利用dsp處理器處理大量重復(fù)計(jì)算的優(yōu)勢(shì)來計(jì)算x軸每一點(diǎn)對(duì)應(yīng)的y的值(在x軸取n個(gè)點(diǎn)進(jìn)行逼近)。整個(gè)系統(tǒng)軟件由主程序和基于

3、泰勒展開法的sin子程序組成，相應(yīng)的軟件流程圖如圖。四、設(shè)計(jì)內(nèi)容1、設(shè)置在family下選擇c55xx，將看到所有c55xx的仿真驅(qū)動(dòng)，包括軟件仿真和硬件仿真；在platform下選擇simulator，在availablefactoryboards中只顯示軟件仿真驅(qū)動(dòng)，選中相應(yīng)的驅(qū)動(dòng)；雙擊c55xxrev4.0cpufunctionalsimulator，可以在mysystem下看到所加入的驅(qū)動(dòng)；點(diǎn)擊save&quit，將保存設(shè)置退出setupccstudiov3.1并啟動(dòng)運(yùn)行ccstudio。2、編寫匯編源程序sin。3.、建立匯編源程序在ccs環(huán)境下，點(diǎn)擊file/new/sourcef

4、ile菜單命令，打開一個(gè)空白文檔，將匯編程序輸入。單擊file/save菜單命令，在d:programfilestimyprojects下保存文件名為sin，并選擇保存類型為*.asm。4、建立鏈接命令文件。5、創(chuàng)建新的工程文件啟動(dòng)ccs，在project菜單中選擇new項(xiàng)，在project中輸入denglin，ccs將創(chuàng)建一個(gè)名為denglin.pjt的工程。6、將文件添加到工程中在工程中添加源文件，執(zhí)行菜單project/addfilestoproject，把sin文件添加到工程中。7、生成和運(yùn)行程序（1）選擇菜單命令projectrebuildall，對(duì)工程重新編譯、匯編和鏈接，主窗口下

5、方的信息窗口將顯示build進(jìn)行匯編、編譯和鏈接的相關(guān)信息。（2）選擇菜單命令fileloadprogram，在當(dāng)前目錄的debug目錄下選擇sin并打開，將build生成的程序加載到dsp中。（3）選擇菜單命令debugrun或在debug工具欄上單擊run按鈕，運(yùn)行該程序。8、觀察運(yùn)行結(jié)果點(diǎn)擊view/gragh菜單命令觀看圖像五、主要參數(shù)六、源程序匯編源程序sin.mmregs.defstart.defd_xs,d_sinx,d_xc,d_cosx,sinx,cosxsin_x:.usectsin_x,360stack:.usectstack,10hk_theta.set286;thet

6、a=pi/360(0.5deg)start:.textstm#stack+10h,spstmk_theta,ar0stm0,ar1stm#sin_x,ar6stm#90,brcrptbloop1-1ldmar1,ald#d_xs,dpstla,d_xsstla,d_xccallsinx;d_sinx=sin(x)callcosx;d_cosx=cos(x)ld#d_sinx,dpldd_sinx,16,a;a=sin(x)mpyad_cosx;b=sin(x)*cos(x)sthb,1,*ar6+;ar6-2*sin(x)mar*ar1+0loop1:loop2:loop3:sinx:tabl

7、e_sd_coef_sstm#sin_x+89,ar7;sin91(deg.)-sin179(deg.)stm#88,brcrptbloop2-1ld*ar7-,astla,*ar6+stm#179,brc;sin180(deg.)-sin359(deg.)stm#sin_x,ar7rptbloop3-1ld*ar7+,anegastla,*ar6+stm#sin_x,ar6;generatesinwavestm#1,ar0stm#360,bkbloop3.defd_xs,d_sinx.data.word01c7h;c1=1/(8*9).word030bh;c2=1/(6*7).word066

8、6h;c3=1/(4*5).word1556h;c4=1/(2*3).usectcoef_s,4d_xs.usectsin_vars,1d_squr_xs.usectsin_vars,1d_temp_s.usectsin_vars,1d_sinx.usectsin_vars,1d_l_s.usectsin_vars,1.textssbxfrctstm#d_coef_s,ar5;movecoeffstable_srpt#3mvpd#table_s,*ar5+stm#d_coef_s,ar3stm#d_xs,ar2stm#d_l_s,ar4st#7fffh,d_l_ssqur*ar2+,a;a=x

9、2sta,*ar2;(ar2)=x2|ld*ar4,b;b=1masr*ar2+,*ar3+,b,a;a=1-x2/72,t=x2mpyaa;a=t*a=x2(1-x2/72)stha,*ar2;(d_temp)=x2(1-x2/72)masr*ar2-,*ar3+,b,a;a=1-x2/42(1-x2/72);t=x2(1-x2/72)mpya*ar2+;b=x2(1-x2/42(1-x2/72)stb,*ar2;(d_temp)=x2(1-x2/42(1-x2/72)|ld*ar4,b;b=1masr*ar2-,*ar3+,b,a;a=1-x2/20(1-x2/42(1-x2/72)mpy

10、a*ar2+;b=x2(1-x2/20(1-x2/42(1-x2/72)stb,*ar2;(d_temp)=b|ld*ar4,b;b=1masr*ar2-,*ar3+,b,a;a=1-x2/6(1-x2/20(1-x2/42(1-x2/72)mpyad_xs;b=x(1-x2/6(1-x2/20(1-x2/42(1-x2/72)sthb,d_sinx;sin(theta)retcosx:.defd_xc,d_cosxd_coef_c.usectcoef_c,4.datatable_c.word0249h;c1=1/(7*8).word0444h;c2=1/(5*6).word0aabh;c3=

11、1/(3*4).word4000h;c4=1/2d_xc.usectcos_vars,1d_squr_xc.usectcos_vars,1d_temp_c.usectcos_vars,1d_cosx.usectcos_vars,1c_l_c.usectcos_vars,1.textssbxfrctstm#d_coef_c,ar5;movecoeffstable_crpt#3mvpd#table_c,*ar5+stm#d_coef_c,ar3stm#d_xc,ar2stm#c_l_c,ar4st#7fffh,c_l_csqur*ar2+,a;a=x2sta,*ar2;(ar2)=x2|ld*ar

12、4,b;b=1masr*ar2+,*ar3+,b,a;a=1-x2/56,t=x2mpyaa;a=t*a=x2（1-x2/56）stha,*ar2;(d_temp)=x2(1-x2/56)masr*ar2-,*ar3+,b,a;a=1-x2/30(1-x2/56);t=x2(1-x2/56)mpya*ar2+;b=x2(1-x2/30(1-x2/56)stb,*ar2;(d_temp)=x2(1-x2/30(1-x2/56)|ld*ar4,b;b=1masr*ar2-,*ar3+,b,a;a=1-x2/12(1-x2/30(1-x2/56)sftaa,-1,a;-1/2negampya*ar2

13、+;b=-x2/2(1-x2/12(1-x2/30(1-x2/56)mar*ar2+retdadd*ar4,16,b;b=-x2/2(1-x2/12(1-x2/30(1-x2/56)sthb,*ar2;cos(theta)ret.end.mmregs.defstart.defd_xs,d_sinx,d_xc,d_cosx,sinx,cosxsin_x:stack:k_thetastart:.usectsin_x,360.usectstack,10h.set286;theta=pi/360(0.5deg).textstm#stack+10h,spstmk_theta,ar0stm0,ar1stm

14、#sin_x,ar6stm#90,brcrptbloop1-1ldmar1,ald#d_xs,dpstla,d_xsstla,d_xccallsinx;d_sinx=sin(x)callcosx;d_cosx=cos(x)ld#d_sinx,dpldd_sinx,16,a;a=sin(x)mpyad_cosx;b=sin(x)*cos(x)sthb,1,*ar6+;ar6-2*sin(x)mar*ar1+0loop1:stm#sin_x+89,ar7;sin91(deg.)-sin179(deg.)stm#88,brcrptbloop2-1ld*ar7-,astla,*ar6+loop2:st

15、m#179,brc;sin180(deg.)-sin359(deg.)stm#sin_x,ar7rptbloop3-1ld*ar7+,anegastla,*ar6+loop3:stm#sin_x,ar6;generatesinwavestm#1,ar0stm#360,bkbloop3sinx:.defd_xs,d_sinx.datatable_s.word01c7h;c1=1/(8*9).word030bh;c2=1/(6*7).word0666h;c3=1/(4*5).word1556h;c4=1/(2*3)d_coef_s.usectcoef_s,4d_xs.usectsin_vars,1

16、d_squr_xs.usectsin_vars,1d_temp_s.usectsin_vars,1d_sinx.usectsin_vars,1d_l_s.usectsin_vars,1.textssbxfrctstm#d_coef_s,ar5;movecoeffstable_srpt#3mvpd#table_s,*ar5+stm#d_coef_s,ar3stm#d_xs,ar2stm#d_l_s,ar4st#7fffh,d_l_ssqur*ar2+,a;a=x2sta,*ar2;(ar2)=x2|ld*ar4,b;b=1masr*ar2+,*ar3+,b,a;a=1-x2/72,t=x2mpy

17、aa;a=t*a=x2(1-x2/72)stha,*ar2;(d_temp)=x2(1-x2/72)masr*ar2-,*ar3+,b,a;a=1-x2/42(1-x2/72);t=x2(1-x2/72)mpya*ar2+;b=x2(1-x2/42(1-x2/72)stb,*ar2;(d_temp)=x2(1-x2/42(1-x2/72)|ld*ar4,b;b=1masr*ar2-,*ar3+,b,a;a=1-x2/20(1-x2/42(1-x2/72)mpya*ar2+;b=x2(1-x2/20(1-x2/42(1-x2/72)stb,*ar2;(d_temp)=b|ld*ar4,b;b=1

18、masr*ar2-,*ar3+,b,a;a=1-x2/6(1-x2/20(1-x2/42(1-x2/72)mpyad_xs;b=x(1-x2/6(1-x2/20(1-x2/42(1-x2/72)sthb,d_sinx;sin(theta)retcosx:.defd_xc,d_cosxd_coef_c.usectcoef_c,4.datatable_c.word0249h;c1=1/(7*8).word0444h;c2=1/(5*6).word0aabh;c3=1/(3*4).word4000h;c4=1/2d_xc.usectcos_vars,1d_squr_xc.usectcos_vars,

19、1d_temp_c.usectcos_vars,1d_cosx.usectcos_vars,1c_l_c.usectcos_vars,1.textssbxfrctstm#d_coef_c,ar5;movecoeffstable_crpt#3mvpd#table_c,*ar5+stm#d_coef_c,ar3stm#d_xc,ar2stm#c_l_c,ar4st#7fffh,c_l_csqur*ar2+,a;a=x2sta,*ar2;(ar2)=x2|ld*ar4,b;b=1masr*ar2+,*ar3+,b,a;a=1-x2/56,t=x2mpyaa;a=t*a=x2（1-x2/56）stha

20、,*ar2;(d_temp)=x2(1-x2/56)masr*ar2-,*ar3+,b,a;a=1-x2/30(1-x2/56);t=x2(1-x2/56)mpya*ar2+;b=x2(1-x2/30(1-x2/56)stb,*ar2;(d_temp)=x2(1-x2/30(1-x2/56)|ld*ar4,b;b=1masr*ar2-,*ar3+,b,a;a=1-x2/12(1-x2/30(1-x2/56)sftaa,-1,a;-1/2negampya*ar2+;b=-x2/2(1-x2/12(1-x2/30(1-x2/56)mar*ar2+retdadd*ar4,16,b;b=-x2/2(1-x2/12(1-x2/30(1-x2/56)sthb,