dsp課程設(shè)計(jì)報(bào)告

數(shù)據(jù)采集處理和把握系統(tǒng)設(shè)計(jì)DSP硬件系統(tǒng)設(shè)計(jì)要求儲(chǔ)器擴(kuò)展、顯示器、鍵盤、AD、DA等電路模塊；,重點(diǎn)考察電路模塊方案設(shè)計(jì)與系統(tǒng)地址安排；2.根本軟件設(shè)計(jì)要求①看懂所給例程,畫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.課程設(shè)計(jì)報(bào)告要求①硬件系統(tǒng)設(shè)計(jì):設(shè)計(jì)思路、設(shè)計(jì)系統(tǒng)功能、主要芯片選型及使用方法、設(shè)計(jì)方案說(shuō)明、電路示意圖計(jì)思路、實(shí)現(xiàn)源碼〔帶程序注釋〕③報(bào)告總結(jié)信號(hào)的疊加。在DSP中采集信號(hào),并且對(duì)信號(hào)進(jìn)展頻譜分析,濾波等。通過(guò)鍵盤LCD上顯示。主要功能如下：據(jù)波形。(2〕對(duì)采集的數(shù)據(jù)進(jìn)展如下算法分析：fft算法計(jì)算信號(hào)的頻率。IIR濾波或FIR濾波，并且計(jì)算濾波前后信號(hào)的頻率.③外部鍵盤或者從計(jì)算機(jī)來(lái)的串口命令選擇算法功能,并且將結(jié)果在LCD上顯示。AD(AltiumDesigner〕繪制出系統(tǒng)的原PCB幅員。DSP中采集信號(hào)，用CCS進(jìn)展算法分析。3。1D[15..0]CLKS16CLKSA[19..0]Power(73HD3XX)

20CONTROL11

1MX16BITFLASHWEOE復(fù)位電路

TMS32054XCEXDS510JTAG16。2DSP電源模塊設(shè)計(jì)15V3。3V1。6V時(shí)鐘模塊設(shè)計(jì)此處由外部晶振供給時(shí)鐘信號(hào)存儲(chǔ)器模塊設(shè)計(jì)DSPFLASH2FLASHDSP。6JATG3.7TMS320VC5416最小系統(tǒng)PCB幅員TMS320VC5416Flash正弦波信號(hào)發(fā)生器所給例程輸出波形為正弦波，波形如以以下圖所示:3三角波〔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”,1outdata10800h〔0800h)outdata209ffh(0fffh〕outdata3.set0affh〔0fffh〕outdata4.set0bffh〔0fffh〕outdata5.set0cffh(0fffh〕outdata6.set0dffh(0fffh)outdata70effh〔0fffh)outdata80fffh(0fffh〕outdata9.set1000h(0fffh)outdata10.set0fffh〔0fffh)outdata11.set0effh〔0fffh〕outdata12.set0dffh(0fffh)outdata13.set0cffh〔0fffh)outdata14.set0bffh〔0fffh)outdata15.set0affh(0fffh〕outdata1609ffh〔0fffh)outdata17.set08ffh(0800h)4outdata18。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)start：stm 2023h，sp//置堆棧指針stm #k1，ar2將操作數(shù)＃k1ar2st＃outdata1，＊ar2//將數(shù)據(jù)送到*ar2nopnopbegin：st portw ＊ar2,0bfffhrpt #7fffhnopst portw *ar2,0bfffhrpt nopst portw *ar2，0bfffh5rpt nopst portw *ar2,0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopst portw *ar2，0bfffhrpt nopst portw ＊ar2,0bfffhrpt nopst portw *ar2，0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopst portw ＊ar2,0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopst portw *ar2,0bfffh6rpt nopst portw ＊ar2，0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw ＊ar2,0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw *ar2，0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw *ar2，0bfffhrpt nopst portw ＊ar2,0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw *ar2,0bfffh7rpt nopst portw ＊ar2,0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopst portw *ar2,0bfffhrpt nopst portw ＊ar2,0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopst portw ＊ar2，0bfffhrpt nopbbegin32。end//代碼段完畢。38系統(tǒng)各模塊初始化系統(tǒng)各模塊初始化調(diào)用FIR濾波器設(shè)計(jì)函數(shù)設(shè)計(jì)系統(tǒng)函數(shù)計(jì)算輸入信號(hào)的頻率和濾波后的信號(hào)頻率返回第三步FFTfr［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〕;fr［it]=pr[is］;fi［it]=pi[is］;}pr[0］=1。0;pi[0］=0.0;p=6.283185306/〔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++)9{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。elsepi[i］=—90.0；}elsepi［i］=atan(fi［i]/fr［i]〕＊360。0/6.283185306;}}卷積程序：voidConvolveok〔 //卷積函數(shù)double*x， //原始輸入數(shù)據(jù)10doubledouble*h，＊y，////沖擊響應(yīng)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］=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11intr;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；｝｝。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)//h(n)｛intt;for(t=0；t〈FLen;t++){12h［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;｝外部中斷2效勞函數(shù)：voidinterruptExtInt2(void){inti1,j;*(unsignedint＊〕IFR=0xFFFF； data_buff［i1]port8002＆0x00ff；i1++;if(i1==256)｛ma〔；

avg；kfft(pr，pi,256,8,fr，fi,0,1〕;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=0；}程序運(yùn)行效果FFT計(jì)算結(jié)果13②51H(n〕波形③濾波前后信號(hào)頻譜圖:由濾波前后凹凸頻重量的相對(duì)大小證明低通濾波器對(duì)高頻重量的衰減作用比較強(qiáng)，但沒(méi)有完全濾出去14④采集數(shù)據(jù)波形與濾波后波形比較由圖可見(jiàn)濾波后信號(hào)中的高頻重量得到了較大的衰減，濾波后波形變得平滑。DSP芯片有更適合于數(shù)字信號(hào)處理的軟件和硬件資源,格外適合于通用數(shù)字信號(hào)DSP根本把握了PCB設(shè)計(jì)軟件AltiumDesignerPCBCCSTMS320VC5416DSPADPCBDSP硬件系統(tǒng).然后