DSP專(zhuān)業(yè)課程設(shè)計(jì)方案報(bào)告

數(shù)據(jù)采集處理和控制系統(tǒng)設(shè)計(jì)一課程設(shè)計(jì)要求1.基礎(chǔ)DSP硬件系統(tǒng)設(shè)計(jì)要求①基礎(chǔ)DSP硬件系統(tǒng)以TMS320C54x系列為關(guān)鍵處理器，包含最小系統(tǒng)、存放器擴(kuò)展、顯示器、鍵盤(pán)、AD、DA等電路模塊；②硬件設(shè)計(jì)畫(huà)出關(guān)鍵芯片及電路模塊之間連接即可，關(guān)鍵考查電路模塊方案設(shè)計(jì)和系統(tǒng)地址分配；③設(shè)計(jì)方案以電路示意圖為主，輔以必需文字說(shuō)明。2.基礎(chǔ)軟件設(shè)計(jì)要求①看懂所給例程，畫(huà)出例程輸出波形示意圖；②修改例程程序，使之輸出其它波形，如方波、三角波、鋸齒波等均可；③設(shè)計(jì)方案以程序?qū)崿F(xiàn)為主，輔以必需文字說(shuō)明。3.課程設(shè)計(jì)匯報(bào)要求①硬件系統(tǒng)設(shè)計(jì)：設(shè)計(jì)思緒、設(shè)計(jì)系統(tǒng)功效、關(guān)鍵芯片選型及使用方法、設(shè)計(jì)方案說(shuō)明、電路示意圖②軟件系統(tǒng)設(shè)計(jì)：示例程序功效解讀及輸出波形示意圖、設(shè)計(jì)軟件功效、設(shè)計(jì)思緒、實(shí)現(xiàn)源碼（帶程序注釋?zhuān)蹍R報(bào)總結(jié) 二系統(tǒng)分析利用試驗(yàn)箱模擬信號(hào)產(chǎn)生單元產(chǎn)生不一樣頻率信號(hào)，或產(chǎn)生兩個(gè)頻率信號(hào)疊加。在DSP中采集信號(hào)，而且對(duì)信號(hào)進(jìn)行頻譜分析，濾波等。經(jīng)過(guò)鍵盤(pán)或串口命令選擇算法功效，將計(jì)算信號(hào)頻率或?yàn)V波后信號(hào)頻率在LCD上顯示。關(guān)鍵功效以下：(1)對(duì)外部輸入模擬信號(hào)采集到DSP內(nèi)存，會(huì)用CCS軟件顯示采集數(shù)據(jù)波形。(2)對(duì)采集數(shù)據(jù)進(jìn)行以下算法分析：①頻譜分析：使用fft算法計(jì)算信號(hào)頻率。②對(duì)信號(hào)進(jìn)行IIR濾波或FIR濾波，而且計(jì)算濾波前后信號(hào)頻率。③外部鍵盤(pán)或從計(jì)算機(jī)來(lái)串口命令選擇算法功效，而且將結(jié)果在LCD上顯示。繪制出DSP系統(tǒng)功效框圖、使用AD（AltiumDesigner）繪制出系統(tǒng)原理圖和PCB版圖。在DSP中采集信號(hào)，用CCS軟件顯示采集數(shù)據(jù)波形，和對(duì)采集數(shù)據(jù)進(jìn)行算法分析。三硬件設(shè)計(jì)3.1硬件總體結(jié)構(gòu)3.2DSP模塊設(shè)計(jì)3.3電源模塊設(shè)計(jì)將5V電源電壓轉(zhuǎn)換為3.3V和1.6V電源3.4時(shí)鐘模塊設(shè)計(jì)此處由外部晶振提供時(shí)鐘信號(hào)3.5存放器模塊設(shè)計(jì)DSP上只有一個(gè)讀寫(xiě)控制信號(hào)引腳，而FLASH有兩個(gè)引腳，將讀、寫(xiě)分開(kāi)，故在OE上接一個(gè)非門(mén)電路，實(shí)現(xiàn)高時(shí)讀，低時(shí)寫(xiě)。FLASH上地址線和數(shù)據(jù)線和DSP上地址線、數(shù)據(jù)線相連3.6JATG模塊設(shè)計(jì)3.7TMS320VC5416最小系統(tǒng)PCB版圖板上包含了支持TMS320VC5416獨(dú)立運(yùn)行時(shí)鐘電路、復(fù)位電路、Flash模塊、JTAG仿真接口電路和電源模塊等。為節(jié)省空間和材料，部分器件放在了反面。四軟件設(shè)計(jì)4.1正弦波信號(hào)發(fā)生器所給例程輸出波形為正弦波，波形以下圖所表示：4.2三角波（方波）信號(hào)發(fā)生器************************************************************************************三角波信號(hào)發(fā)生程序（括號(hào)內(nèi)為方波）************************************************************************************** .mmregs .def startk1 .usect"k",1outdata1.set0800h(0800h)outdata2.set09ffh(0fffh)outdata3.set0affh(0fffh)outdata4.set0bffh(0fffh)outdata5.set0cffh(0fffh)outdata6.set0dffh(0fffh)outdata7.set0effh(0fffh)outdata8.set0fffh(0fffh)outdata9.set1000h(0fffh)outdata10.set0fffh(0fffh)outdata11.set0effh(0fffh)outdata12.set0dffh(0fffh)outdata13.set0cffh(0fffh)outdata14.set0bffh(0fffh)outdata15.set0affh(0fffh)outdata16.set09ffh(0fffh)outdata17.set08ffh(0800h)outdata18.set07ffh(0000h)outdata19.set06ffh(0000h)outdata20.set05ffh(0000h)outdata21.set04ffh(0000h)outdata22.set03ffh(0000h)outdata23.set02ffh(0000h)outdata24.set01ffh(0000h)outdata25.set00ffh(0000h)outdata26.set01ffh(0000h)outdata27.set02ffh(0000h)outdata28.set03ffh(0000h)outdata29.set04ffh(0000h)outdata30.set05ffh(0000h)outdata31.set06ffh(0000h)outdata32.set07ffh(0000h)//定義輸出數(shù)據(jù) .textstart:stmh,sp//置堆棧指針stm #k1,ar2//將操作數(shù)#k1裝入ar2st#outdata1,*ar2//將數(shù)據(jù)送到*ar2nopnopbegin: st#outdata1,*ar2 portw *ar2,0bfffh//將*ar2內(nèi)容從D/A轉(zhuǎn)換器輸出rpt#7fffh//等候一段時(shí)間 nopst#outdata2,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata3,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata4,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata5,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata6,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata7,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata8,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata9,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata10,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata11,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata12,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata13,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata14,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata15,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata16,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata17,*ar2 portw *ar2,0bfffhrpt#7fffh nopst#outdata18,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata19,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata20,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata21,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata22,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata23,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata24,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata25,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata26,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata27,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata28,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata29,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata30,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata31,*ar2 portw *ar2,0bfffhrpt#7fffh nop st#outdata32,*ar2 portw *ar2,0bfffhrpt#7fffh nop b begin//循環(huán)輸出32個(gè)數(shù)據(jù) .end//代碼段結(jié)束4.3本系統(tǒng)軟件總體步驟4.4關(guān)鍵模塊及實(shí)現(xiàn)代碼FFT算法程序：voidkfft(doublepr[Length],doublepi[Length],intn,intk,doublefr[Length],doublefi[Length],intl,intil){intit,m,is,i,j,nv,l0;doublep,q,s,vr,vi,poddr,poddi;for(it=0;it<=n-1;it++){m=it;is=0;for(i=0;i<=k-1;i++){j=m/2;is=2*is+(m-2*j);m=j;}fr[it]=pr[is];fi[it]=pi[is];}pr[0]=1.0;pi[0]=0.0;p=6./(1.0*n);pr[1]=cos(p);pi[1]=-sin(p);if(l!=0)pi[1]=-pi[1];for(i=2;i<=n-1;i++){p=pr[i-1]*pr[1];q=pi[i-1]*pi[1];s=(pr[i-1]+pi[i-1])*(pr[1]+pi[1]);pr[i]=p-q;pi[i]=s-p-q;}for(it=0;it<=n-2;it=it+2){vr=fr[it];vi=fi[it];fr[it]=vr+fr[it+1];fi[it]=vi+fi[it+1];fr[it+1]=vr-fr[it+1];fi[it+1]=vi-fi[it+1];}m=n/2;nv=2;for(l0=k-2;l0>=0;l0--){m=m/2;nv=2*nv;for(it=0;it<=(m-1)*nv;it=it+nv)for(j=0;j<=(nv/2)-1;j++){p=pr[m*j]*fr[it+j+nv/2];q=pi[m*j]*fi[it+j+nv/2];s=pr[m*j]+pi[m*j];s=s*(fr[it+j+nv/2]+fi[it+j+nv/2]);poddr=p-q;poddi=s-p-q;fr[it+j+nv/2]=fr[it+j]-poddr;fi[it+j+nv/2]=fi[it+j]-poddi;fr[it+j]=fr[it+j]+poddr;fi[it+j]=fi[it+j]+poddi;}}if(l!=0)for(i=0;i<=n-1;i++){fr[i]=fr[i]/(1.0*n);fi[i]=fi[i]/(1.0*n);}if(il!=0)for(i=0;i<=n-1;i++){pr[i]=sqrt(fr[i]*fr[i]+fi[i]*fi[i]);if(fabs(fr[i])<0.000001*fabs(fi[i])){if((fi[i]*fr[i])>0)pi[i]=90.0;elsepi[i]=-90.0;}elsepi[i]=atan(fi[i]/fr[i])*360.0/6.;}}卷積程序：voidConvolveok(//卷積函數(shù)double*x, // 原始輸入數(shù)據(jù)double*h, // 沖擊響應(yīng)double*y, // 卷積輸出結(jié)果UINT16Leng, //序列長(zhǎng)度UINT16h_Len){ UINT16m,p,j; doubler,rm; doublexmean=0.0; doublexmid[100]; for(m=0;m<h_Len;m++) { xmid[m]=0.0; } for(m=0;m<Leng;m++) { xmean=x[m]+xmean; } xmean=1.0*xmean/Length; for(m=0;m<Leng;m++) { x[m]=x[m]-xmean; } for(m=0;m<Leng;m++) { for(p=0;p<h_Len;p++) { xmid[h_Len-p-1]=xmid[h_Len-p-2]; } xmid[0]=x[m]; r=0.0; rm=0.0; for(j=0;j<h_Len;j++) { r=xmid[j]*h[j]; rm=rm+r; } y[m]=rm; }}求最大值和次大值函數(shù)：voidmax(){intk1,k2;//k1最大值，k2次最大值intr;for(r=0;r<16;r++){if(pr[k1]<pr[r]){k1=r;}}for(r=20;r<64;r++){if(pr[k2]<pr[r]){k2=r;}}f0=250000.0/256*k1;f1=250000.0/256*k2; fc=(f0+f1)/2;}歸一化函數(shù)：voidavg(){intj;sum=0.0;for(j=0;j<256;j++){sum+=(data_buff[j]/256.0);}for(j=0;j<256;j++){pr[j]=data_buff[j]-sum;pi[j]=0.0;}}FIR濾波器設(shè)計(jì)函數(shù)：voidfirdes(doublenpass)//求h(n){ intt; for(t=0;t<FLen;t++) { h[t]=sin((t-(FLen-1)/2.0)*npass*3.1415926)/(3.1415926*(t-(FLen-1)/2.0)); }if(t==((FLen-1)/2))h[t]=npass;}外部中止2服務(wù)函數(shù)：voidinterruptExtInt2(void){inti1,j;*(unsignedint*)IFR=0xFFFF;//清除全部中止標(biāo)志data_buff[i1]=port8002&0x00ff;i1++;if(i1==256){avg();kfft(pr,pi,256,8,fr,fi,0,1);max();npass=fc/250000.0;firdes(npass);Convolveok(data_buff,h,y,256,51);for(j=0;j<256;j++){ yr[j]=y[j];yi[j]=0.0;}kfft(yr,yi,256,8,Yr,Yi,0,1);flag=1;i1=