Linux-AD采样多线程.docx
嵌入式系统原理及应用试验报告试验六多线程试验和AD试验院（系）专业小组成员成绩一指导老师一试验要求1 .参考试验指导书多线程试验和AD试验,分析源码。2 .编写AD采集多线程程序，实现以下功能：D线程1：在循环中对指定的AD通道进行转换和显示,显示格式为：ADx=*vo其中X为通道号0-2,初始值为0。每循环一次延时300ms02）线程2:接受用户输入，当输入数值0-2时表示指定AD通道线程1的通道号要随指定值变更；当输入字符S时显示暂停，输入ESC时程序终止退出。输入其他键值时维持原状。3 .扩展部分：将线程1分为2个线程，一个用来计算，一个用来显示。2.1试验步骤1将编成完的程序打包放入虚拟机192.168O.10/arm2410s;2将arm2410s挂载到开发板中新建的host文件夹里毛连林开发<5XhdZO6eEdityw100UWindowHelpJ-I-Ja-凶，Address(TCd三ntyaffa(natyffaBcutYnf192.168.0.10zm2410Mtyffboc(nntyffj)la485controlboflckbdQPSp<3ca-B0<lUCO9QtopladaccardIife-9dcardvideoadxpldlot*found3tn1.K8“bbluetoothfpgaxnxt.9wtorsocdwirelesscanps-gprsrdaxplayertouchscreen(natyffacdhost/(Bntyff>bo>tl>busybox-l.OO-prelOexx03ICernel-2410,HexpBlcrovindcve0C。心Rlnl9ulex&xOlTOQZexazO2xn3ight-6.0sh3进入到虚拟机的文件夹里make,生成.。文件utr»4UiMiie2S年CCC匚scMtroICd.4tIU；S'a24139K1.abotcvCteUacUlU4life1.onfcwmca>t彳«>r>三rootAlAtftec<u<>r*x*ft?StMtnM41.Mt84f24ie/：VMC|：»c«；»Mt2"8"ltct<a-l.M-*r1.OCwOocm*C:*(>：，*a3Bg>XaCiutt><.l*ral-241Ctfmc3MCS4evau>才“roa金；:cccl：xe3«tu*243B2KoeBl.Olb<tie-EM.,C!r4i4cMt>.*>.0Mvr*,41.-uA3vs-l1.3tx-9scY-©*UJgak.c,:vr4：.UkMv«.：1.»-o.¼tt,(MMs.s-trdnMiaxk>E2<sc©dmi&.eX3rvMlrw<IXC41.MlOtMBoIB0pniCsJFE42«»4»6。u>2O©1(V三.73,4进入串口连接开发板中运行(三Dtj,ffi)cdexaafil/m*0"mua03xp.)三rjtyffbortede(an"r",Ewp】1.eXa<rti-c>3；，sakb««icboc<lo«dexdriwr>(Wrtyff9!Ee*Bb9ic(.,antrffovt.*%*c1,ClJJtllO6SQOZjthmM04cn3.，yS.gpoejlj三e3n-oo12>!5l>ZC4X：4_0C-bttpd“_X«d(BDi7j'ffi,t>elcd04二A”biab1ex8S*yt>cE(三ntrCffcor.'t<xcM-i.OJ1«(三Dtyfftc>p.*toic.*,M-d-0"S三试验程序bythreewater<threewater<S>up-techindude<stdio.h>#indude<ur>istd.h>#include<systypes.h>indude<sysipc.h>#indude<sysioctl.h>#indude<pthread.h>/includeVfCnt1.h>*include's3c2410-adc.h"#defineADC_DEV'devadc0rav,staticintadcjd=-1;staticintini1.ADdeVi8(VOid)if(adcJd=open(ADC_DEV.O_RDWR)<OXprintf('Erroropeningsadcdevice,1ADC_DEV);return-1;)staticintGetADresult(intchannel)(i11tprescale=o×ff;intdata=ADC-WRITE(cannel.PRESCA1.E);write(adc.fd,&data.SiZeOf(data)：read(adcjd.&data,SJZeOf(data)：returndata;staticintstop=0;r>tadjnum；ntch;/.*r*.*e退出m*/staticvoid*ComMomtOf(void*data)(while(l)stop=l;exit(l);break；)returnNU1.1.;/采样02路A/D值/intadn;intpausenum=0.voidshow(void*data)(floatd:while(adn=0ad=ladn=2)采样0-2路A/D值WhiIe(Stop=O)(While(PaiJSenUm=0)(d=(foat)GetADresut(ad11)3.3)1024.0:printf("CHd=¼8.4fvf.adn,d);usleep(l):Printf(V);)break.)/*«a.b,c显示02路-*/void<input(voiddata)charchr：Pthreadjth_show.while(l)(SCanfrHC”.&chr);chr=getchar():if(chr-48chr=49chr=50ya.b,c-0-2路(adc.num=chr;adn=adc_num-48/)adc,num=chcadn=adJnlJm-48“hif(chr=43)adc,num=chr;ad=O;)if(chr=38)adc,num=chr;dn=ljif(chr=77)adc.num=chr;ad11=2;)*/elseif(chr=115)/S停止(pausenum=1;)elseif(chr=27)esc退出(ch=chr;stop=l;)elseif(chr!=115"/随意键接者(pausenum=。；)/break;)intrain(void)inti;floatd:pthreadtth_com.th_sbow.thinput;voidretval：“sets3c44bADregisterandstartADif(init,ADdevceO<O)return-1;Createthethreads*!Pthread_Create(&th_cOrn.NUMontor.O);pthreadcreate(&th.input.NU1.1.,input.O);printf("ngetthekeyinputn"XPthreaC1.Create(&th_Show,NU1.1.show.O);/»Waituntilproducerandsumerfinish,threadjoi(thJnput1&retval);PthreadJOm(Ih_Show.&retval);pthreadjo11(th-com.retva);pritf(,):return0；)三试验结果-XshdIZOHdit½wJoo¼rdowHP方同1G*J。遇Addr”CHO-O.hOOGCHO-O.OOCOwCHl-32夬与2M2945OHO-O.OOCOwCHl-3j295CM23.2XeVrQH23.2UivO!23.25WSN23.294«vrH2-3.JHfivCH00.OCCCrCHO0.OOCCv(三jtyffcotrolMpbMXc04-d2)cd.三ncyffaccfitrolex,'l>91ccd.Iiyffaccrolexpcd.(三ntyffwetrel)Cd!ntyaff-tnfs192.1(8.0.10zara24109三ntyaffscctttrol(/MltZyeffeJcdCOQttOl/sntyaffseetolxb>ielIs01-ello02-p¾hre02JSM103Fy04.dCC-ca6%oe-prs09二MtR10adCAtorIlfepeocor12二463aatyaffseeetrol<jcb*ie)cd04-4d2I三ntyaffsceetroVep,lm9ic04,ad2J./ad13-lccaxdtesbluetooth14.ledIre)to<rdNftbefllte3M.UIbxn9etthekeyleputC100.OOCCirrCHl-322HvCH2-3.2S<wCBO0.00001CHl-322H4vCH2-3.294CVCHO0.a00CvCHO-0.OOOOvgCHO-0.*0<JvCHO0.OOOGv(BntyffcontrolejbMXc04.d2p.r3jH1S9W四试验总结4.1 试验完成效果÷可以实现多线程AD采样效果；：当输入数值1、2、3时表示指定AD通道线程1的通道号要随指定值变更:当输入字符s时显示暂停；当输入随意字符时重新起先；输入ESC时程序终止退出。输入其他键值时维持原状；可以实现暂停、更新起先、退出功能；分为3个线程.一个用来获得键值，一个用来显示,一个用来退出。
