D S P课程设计正弦信发生器的设计SANY标准化小组 #QS8QHH-HHGX8Q8-GNHHJ8-HHMHGN#太原理工大学DSP课程设计：正弦信号发生器的设计学号：班级：姓名：指导教师：一、设计目的1、通过实验掌握DSP的软件开发过程2、学会运用汇编语言进行程序设计3、学会用CCS仿真模拟DSP芯片，通过CCS软件平台上应用C54X汇编语言来实现正弦信号发生装置。

二、设计原理三、本实验产生正弦波的方法是泰勒级数展开法。

泰勒级数展开法需要的单元少，具有稳定性好，算法简单，易于编程等优点，而且展开的级数越多，失真度就越小。

求一个角度的正弦值取泰勒级数的前5项，得近似计算式：四、总体方案设计本实验是基于CCS开发环境的。

CCS是TI公司推出的为开发TMS320系列DSP软件的集成开发环境，是目前使用最为广泛的DSP开发软件之一。

它提供了环境配置、源文件编译、编译连接、程序调试、跟踪分析等环节，并把软、硬件开发工具集成在一起，使程序的编写、汇编、程序的软硬件仿真和调试等开发工作在统一的环境中进行，从而加速软件开发进程。

通过CCS软件平台上应用C54X汇编语言来实现正弦信号发生装置。

总体思想是：正弦波的波形可以看作由无数点组成，这些点与x轴的每一个角度值相对应，可以利用DSP处理器处理大量重复计算的优势来计算x轴每一点对应的y的值(在x轴取N个点进行逼近)。

整个系统软件由主程序和基于泰勒展开法的SIN子程序组成，相应的软件流程图如图。

五、设计内容1、设置在Family下选择C55xx，将看到所有C55xx的仿真驱动，包括软件仿真和硬件仿真；在Platform下选择Simulator，在Available Factory Boards中只显示软件仿真驱动，选中相应的驱动；双击C55xx Rev4.0 CPU Functional Simulator，可以在My System下看到所加入的驱动；点击Save & Quit，将保存设置退出Setup CCStudio v3.1并启动运行CCStudio。

2、编写汇编源程序sin。

3.、建立汇编源程序在CCS环境下，点击file/new/source file菜单命令，打开一个空白文档，将汇编程序输入。

单击file/save菜单命令，在D:\program files\ti\myprojects下保存文件名为sin，并选择保存类型为*.asm。

4、建立链接命令文件。

5、创建新的工程文件启动CCS，在Project菜单中选择New项，在Project中输入denglin，CCS将创建一个名为denglin.pjt的工程。

6、将文件添加到工程中在工程中添加源文件，执行菜单project/add files to project，把sin文件添加到工程中。

7、生成和运行程序（1）选择菜单命令Project→Rebuild All，对工程重新编译、汇编和链接，主窗口下方的信息窗口将显示build进行汇编、编译和链接的相关信息。

（2）选择菜单命令File→Load Program，在当前目录的Debug目录下选择sin并打开，将Build生成的程序加载到DSP中。

（3）选择菜单命令Debug→Run或在Debug工具栏上单击Run按钮，运行该程序。

8、观察运行结果点击view/gragh菜单命令观看图像六、主要参数七、源程序汇编源程序sin.mmregs.def start.def d_xs,d_sinx,d_xc,d_cosx,sinx,cosxsin_x: .usect "sin_x",360STACK: .usect "STACK",10Hk_theta .set 286 ;theta=pi/360(0.5deg)start:.textSTM #STACK+10H,SPSTM k_theta,AR0STM 0,AR1STM #sin_x,AR6STM #90,BRCRPTB loop1-1LDM AR1,ALD #d_xs,DPSTL A,@d_xsSTL A,@d_xcCALL sinx ;d_sinx=sin(x)CALL cosx ;d_cosx=cos(x)LD #d_sinx,DPLD @d_sinx,16,A ;A=sin(x)MPYA @d_cosx ;B=sin(x)*cos(x)STH B,1,*AR6+ ;AR6----2*sin(x)MAR *AR1+0loop1: STM #sin_x+89, AR7 ;sin91(deg.)-sin179(deg.)STM #88,BRCRPTB loop2-1LD *AR7-,ASTL A,*AR6+loop2: STM #179,BRC ;sin180(deg.)-sin359(deg.)STM #sin_x,AR7RPTB loop3-1LD *AR7+,ANEG ASTL A,*AR6+loop3: STM #sin_x,AR6 ;generate sin waveSTM #1,AR0STM #360,BKB loop3sinx:.def d_xs,d_sinx.datatable_s .word 01C7H ;C1=1/(8*9).word 030BH ;C2=1/(6*7).word 0666H ;C3=1/(4*5).word 1556H ;C4=1/(2*3)d_coef_s .usect "coef_s",4d_xs .usect "sin_vars",1d_squr_xs .usect "sin_vars",1d_temp_s .usect "sin_vars",1d_sinx .usect "sin_vars",1d_l_s .usect "sin_vars",1.textSSBX FRCTSTM #d_coef_s,AR5 ;move coeffs table_s RPT #3MVPD #table_s,*AR5+STM #d_coef_s,AR3STM #d_xs,AR2STM #d_l_s,AR4ST #7FFFH,d_l_sSQUR *AR2+,A ;A=x^2ST A,*AR2 ;(AR2)=x^2||LD *AR4,B ;B=1MASR *AR2+,*AR3+,B,A ;A=1-x^2/72,T=x^2MPYA A ;A=T*A=x^2(1-x^2/72)STH A,*AR2 ;(d_temp)=x^2(1-x^2/72)MASR *AR2-,*AR3+,B,A ;A=1-x^2/42(1-x^2/72);T=x^2(1-x^2/72)MPYA *AR2+ ;B=x^2(1-x^2/42(1-x^2/72)) ST B,*AR2 ;(d_temp)=x^2(1-x^2/42(1-x^2/72))||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/20(1-x^2/42(1-x^2/72))MPYA *AR2+ ;B=x^2(1-x^2/20(1-x^2/42(1-x^2/72)))ST B,*AR2 ;(d_temp)=B||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/6(1-x^2/20(1-x^2/42(1-x^2/72)))MPYA d_xs ;B=x(1-x^2/6(1-x^2/20(1-x^2/42(1-x^2/72))))STH B,d_sinx ;sin(theta)RETcosx:.def d_xc,d_cosxd_coef_c .usect "coef_c",4.datatable_c .word 0249H ;C1=1/(7*8).word 0444H ;C2=1/(5*6).word 0AABH ;C3=1/(3*4).word 4000H ;C4=1/2d_xc .usect "cos_vars",1d_squr_xc .usect "cos_vars",1d_temp_c .usect "cos_vars",1d_cosx .usect "cos_vars",1c_l_c .usect "cos_vars",1.textSSBX FRCTSTM #d_coef_c,AR5 ;move coeffs table_cMVPD #table_c,*AR5+STM #d_coef_c,AR3STM #d_xc,AR2STM #c_l_c,AR4ST #7FFFH,c_l_cSQUR *AR2+,A ;A=x^2ST A,*AR2 ;(AR2)=x^2||LD *AR4,B ;B=1MASR *AR2+,*AR3+,B,A ;A=1-x^2/56,T=x^2MPYA A ;A=T*A=x^2（1-x^2/56）STH A,*AR2 ;(d_temp)=x^2(1-x^2/56) MASR *AR2-,*AR3+,B,A ;A=1-x^2/30(1-x^2/56);T=x^2(1-x^2/56)MPYA *AR2+ ;B=x^2(1-x^2/30(1-x^2/56)) ST B,*AR2 ;(d_temp)=x^2(1-x^2/30(1-x^2/56))||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/12(1-x^2/30(1-x^2/56))SFTA A,-1,A ;-1/2NEG AMPYA *AR2+ ;B=-x^2/2(1-x^2/12(1-x^2/30(1-x^2/56)))MAR *AR2+RETDADD *AR4,16,B ;B=-x^2/2(1-x^2/12(1-x^2/30(1-x^2/56)))STH B,*AR2 ;cos(theta)RET.end .mmregs.def start.def d_xs,d_sinx,d_xc,d_cosx,sinx,cosxsin_x: .usect "sin_x",360STACK: .usect "STACK",10Hk_theta .set 286 ;theta=pi/360(0.5deg)start:.textSTM #STACK+10H,SPSTM k_theta,AR0STM 0,AR1STM #sin_x,AR6STM #90,BRCRPTB loop1-1LD #d_xs,DPSTL A,@d_xsSTL A,@d_xcCALL sinx ;d_sinx=sin(x)CALL cosx ;d_cosx=cos(x)LD #d_sinx,DPLD @d_sinx,16,A ;A=sin(x)MPYA @d_cosx ;B=sin(x)*cos(x)STH B,1,*AR6+ ;AR6----2*sin(x)MAR *AR1+0loop1: STM #sin_x+89, AR7 ;sin91(deg.)-sin179(deg.)STM #88,BRCRPTB loop2-1LD *AR7-,ASTL A,*AR6+loop2: STM #179,BRC ;sin180(deg.)-sin359(deg.)STM #sin_x,AR7RPTB loop3-1LD *AR7+,ANEG ASTL A,*AR6+loop3: STM #sin_x,AR6 ;generate sin waveSTM #1,AR0STM #360,BKB loop3sinx:.def d_xs,d_sinx.datatable_s .word 01C7H ;C1=1/(8*9).word 030BH ;C2=1/(6*7).word 0666H ;C3=1/(4*5).word 1556H ;C4=1/(2*3)d_coef_s .usect "coef_s",4d_xs .usect "sin_vars",1d_squr_xs .usect "sin_vars",1d_temp_s .usect "sin_vars",1d_sinx .usect "sin_vars",1d_l_s .usect "sin_vars",1.textSSBX FRCTSTM #d_coef_s,AR5 ;move coeffs table_s RPT #3MVPD #table_s,*AR5+STM #d_coef_s,AR3STM #d_xs,AR2STM #d_l_s,AR4ST #7FFFH,d_l_sSQUR *AR2+,A ;A=x^2ST A,*AR2 ;(AR2)=x^2||LD *AR4,B ;B=1MASR *AR2+,*AR3+,B,A ;A=1-x^2/72,T=x^2MPYA A ;A=T*A=x^2(1-x^2/72)STH A,*AR2 ;(d_temp)=x^2(1-x^2/72)MASR *AR2-,*AR3+,B,A ;A=1-x^2/42(1-x^2/72);T=x^2(1-x^2/72)MPYA *AR2+ ;B=x^2(1-x^2/42(1-x^2/72)) ST B,*AR2 ;(d_temp)=x^2(1-x^2/42(1-x^2/72))||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/20(1-x^2/42(1-x^2/72))MPYA *AR2+ ;B=x^2(1-x^2/20(1-x^2/42(1-x^2/72)))ST B,*AR2 ;(d_temp)=B||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/6(1-x^2/20(1-x^2/42(1-x^2/72)))MPYA d_xs ;B=x(1-x^2/6(1-x^2/20(1-x^2/42(1-x^2/72))))STH B,d_sinx ;sin(theta)RETcosx:.def d_xc,d_cosxd_coef_c .usect "coef_c",4.datatable_c .word 0249H ;C1=1/(7*8).word 0444H ;C2=1/(5*6).word 0AABH ;C3=1/(3*4).word 4000H ;C4=1/2d_xc .usect "cos_vars",1d_squr_xc .usect "cos_vars",1d_temp_c .usect "cos_vars",1d_cosx .usect "cos_vars",1c_l_c .usect "cos_vars",1.textSSBX FRCTSTM #d_coef_c,AR5 ;move coeffs table_cRPT #3MVPD #table_c,*AR5+STM #d_coef_c,AR3STM #d_xc,AR2STM #c_l_c,AR4ST #7FFFH,c_l_cSQUR *AR2+,A ;A=x^2ST A,*AR2 ;(AR2)=x^2||LD *AR4,B ;B=1MASR *AR2+,*AR3+,B,A ;A=1-x^2/56,T=x^2MPYA A ;A=T*A=x^2（1-x^2/56）STH A,*AR2 ;(d_temp)=x^2(1-x^2/56) MASR *AR2-,*AR3+,B,A ;A=1-x^2/30(1-x^2/56);T=x^2(1-x^2/56)MPYA *AR2+ ;B=x^2(1-x^2/30(1-x^2/56)) ST B,*AR2 ;(d_temp)=x^2(1-x^2/30(1-x^2/56))||LD *AR4,B ;B=1MASR *AR2-,*AR3+,B,A ;A=1-x^2/12(1-x^2/30(1-x^2/56))SFTA A,-1,A ;-1/2NEG AMPYA *AR2+ ;B=-x^2/2(1-x^2/12(1-x^2/30(1-x^2/56)))MAR *AR2+RETDADD *AR4,16,B ;B=-x^2/2(1-x^2/12(1-x^2/30(1-x^2/56)))STH B,*AR2 ;cos(theta)RET链接命令文件MEMORY{PAGE 0:EPROM: org=0E000H, len=1000HVECS: org=0FF80H, len=0080HPAGE 1:SPRAM: org=0060H, len=0020HDARAM1: org=0080H, len=0010HDARAM2: org=0090H, len=0010HDARAM3: org=0200H, len=0200H}SECTIONS{.text :> EPROM PAGE 0.data :> EPROM PAGE 0STACK :> SPRAM PAGE 1sin_vars :> DARAM1 PAGE 1coef_s :> DARAM1 PAGE 1cos_vars :> DARAM2 PAGE 1coef_c :> DARAM2 PAGE 1sin_x : align(512) {} > DARAM3 PAGE 1.vectors :>VECS PAGE 0}八、实验结果及分析结果成功生成了正弦波图像，表明改程序能通过TMS320C54x产生正弦信号九、设计总结这次实验通过与小组的探讨研究使我对这门学科的基本知识、理论解起来更加方便直观和深刻。