物联网传感器原理与应用课程试验指导书——实训

1、实训二压力传感器实验1 .实验环境?硬件：ZIGBEE(CC2431膜块，ZIGBEEF载调试板，配套压力传感器，US昉真器，PO软件：IAREmbeddedWorkbenchforMCS-512 .实验内容?阅读UP-CUPIOT-6410系统ZIGBEE莫块硬件部分文档，熟悉ZIGBEE莫块相关硬件接口。?阅读CC2431芯片文档，熟悉A/D转换的使用及操作。?使用IA研发环境设计程序，利用CC2431的I0断来监测压力传感器的状态。3 .实验原理3.1 硬件接口原理ZIGBEE(CC2431暇块LEDM件接口vnniv1T755BD_RF2AVDDa近L.XR.X士帆ITLH壮丁AVDJ

2、R7】4%3。EEAX-HDVcairQ_n&R口鼻吊门CHFRBAS2dotngvdDVDQP!pTaRFFT.XP(l_口poi心匕4_里1LOJ1iJixpimP】：!，二詈一二MJwnux3jsokB岩一o#o_-Fl-，l.$3一-rlplplplwrI*巴C1HWH2AC一|一等YK图4.8.1LED硬件接口ZIGBEE(CC2431膜块硬件上设计有2个LEDT,用来编程调试使用。分别连接CC2431的P1_0、P、1_1两个I0脚。从原理图上可以看出，2个LED丁共阳极，当P1_0、P1_1引脚为低电平时候，LEW点亮。?压力传感器模块硬件接口丁”一GN口口UTFLT1木口：AD

3、I3LS555GNDC1ND图4.8.2压力传感器硬件接口图4.8.3ZIGBEE模块主板J5接口系统配套的压力传感器，与ZIGBEE模块的J5排线相连，这样我们可以知道，压力传感器模块的输出与ZIGBEE莫块的P0_0IO引脚相连。因此我们需要在代码中将相应输出IO乍为A/D输入引脚进行设置，即可来监测压力传感器或态。?CC2431相关寄存器PI1，49。PCrl1BitNameKc5i?tRMDescriptioill7：0Pl7:0CxC：R/WPort1,GeneralpurposeI/Oport,Bi.t-addnessable,表4.8.1P1寄存器P1DIR(OxFE)-Port

4、1DirectionBilNameRmo(R/WDescriptioin7二二三三二一0R/WPi_7UOdiiBctiori0Input1Output6MRF二0R/WPl_fil/Odhroctlon0Input1OutputBDZRP1_S0R/WPl_5I/O看ir&eHortDInput1Output4D工RP1_40R/WP1_4I/OdirectionD加网1Output3MRF二二0FVWPl_3l/Odhroctlon0Input1Output2_)ZRFl_z0FWWPl_2I/OdireetioH0Input1Output1DZRF1_10R/WP1_1lr0direct

5、ion0In网1Output00RJWPI.。l/OdiTBCtioo0Input1Output表41.8.2P1DIR寄存器以上图表列出了关于CC2431处理器的P1IO相关寄存器，其中只用到了P1和P1DIR两个寄存器的设置，P1寄存器为可读写的数据寄存器，P1DIR为IO输入输出选择寄存器，其他IO寄存器的功能，使用默认配置。详情请用户参考CC2431的芯片手册。CLKCON(0xC6|-ClockconirolBitNameHCEfltRMDe&criplioh71R/W32khezdockDsclatorselect-D-32kHzcfysteloscillator1-32kH；RC

6、ctcilla(or6osc1MaindockGSdllarselect:0-32MHzcrystaloscMotor116WHeHRCcsGillalorIiswtongwillonlytakeeifeclwhantheselectedasciliatorIbpojveredup白rdicabc.Ifihuaetecitt;oscillatorianotpeteredup,Ihe1-,yntingIh将卜巾也由pouwaritup.53?ICKSPD2t0I001R/WTineFlicksouutsetlrgcannotbengrsrmans&teniclockseirggivSftbyCS

7、CLrt医匕士ingOQO-S2MHzticks001-16MHztidfS010-BMH7beks011-4MHzticks1QO-2MWzbcks101-1M也ticks110-05WHz111-D25Ml-Ulicks2:0CLR/WReserved.AlivsysseiIdOOQ.表4.8.3CLKCON寄存器SLEEP(OxBE)-SleepmodecontrolBilNameRtseLR/WescripLon70RDUnusedeXO=C_TB0RXOSCstdbestatus:0-X0SCisnotpowereduporndtyststable1-XOSCispoweredupa

8、ndstable511FRC_ETB0HFRCOSCBtnblfiBtfltvs：0-HFMCOSCisnotfKiven&dornot为stable1HFRCOSCispcjwe,eaupardslanle4:3於J，；。：XXRStilusbilindicalingttiecfldl;HnftheIa$|If|幅足自侑inUtipl电resets.方eagisterwillonlymntam(helastev8nt00-PowerQHreset01-Exlsrna)0&瓢IQ-Watebdogtirw，eset2OSC-PD0WWHOXOSCartdHFRCOSCdotmeetlirg.T

9、hebitshallbedeared计(heOSCbiti&fcogglad.Also,iftiienei*acalibraHoninprogmsa3MEeCPUattemptstosetThnbitttiemocdbshallupdeDr：inebdonlyat(heendcfcahbration.0-BathcscilwlQFpoweredup1-OscilabarnotstalactedbyOSCbnpowenat!don1力MODE(l:0)00RWSleepmodesettira00-Powermode001-Powermode1ID*Pcvvermode2J1-Pcwarrntid

10、e3表4.8.4SLEEP控制奇存器PERCFG(0xF1)PeripheralControlBitNamseResetR帆Description70RONotused6T1CFG0FLWTimer1UOiQcaMn0Altsmativei1locatio*n1Altsmotive2locatio-n5T3CFG0R/WTlmer3I/OIccstton0Alternative1location1Alternative2locatiDn4T4FG0R7WTimer4I/OIccafion0Allemative1location1Altemativa2locabon3:2DORONotused1

11、U1CFG0R/WSART1I/Olocation0AJEs-maEivg1locatiDn1Al(smativs2I。3Hon0UOCFG0RWSARTOI/Olocation0AlLemativa1location1Alt&mabvE2Iccation表4.8.5PERCFG寄存器U0C5R(0x96)-USART0ControlandStatusBitNameRnsetRAMDMcription一F4COE0RWUSARTspJeGi0SPlmoae1UARTrioce6RE0UAF?receivererable0Recomer日rd31Recehserenabled5SLAVERAWS

12、Pl廿cr,Slavtfrnad-fipciOSima$t0r1SPlslave4FE0RAiwOUARframngerrorsEatu0Noframing，irycotoctod1Byte-recvedwithiriRTgtstqpbitevel*ER年RAiVOARTpailiyirofsiiaLsDNoperilserrorcetected1Byttriect3*edwithpartlyerror2RX_erTE0R/WORec&vptjytestatus0Nobytereseived1ReceiMtwlb/tensEicy1TXBYTE口R/0Tranemnty自ciaiLE0Bt&r

13、ottnenarntted1LjsIb/lev*ri：tentoDetaSulft?regislsrVSTsmlttsi0ACTIVE0RUSART:rarernitroGeicactEtotjs0USART汜您1USARTEjsy巾HirsmtorrpcXvemon0表4.8.6U0CSR寄存器UOGCR(0xU5)-USART0GenericControlBitMamaR询R/W4&cnpt)on7CFCL0RM/SPldockpobrisyQ网呼k忖厘clackp6削liy1PcsiiieeIdckpalarit/6ZPHA0RAWSPlclock,ph4sB0sOjtpuionwhen

14、SCKgoesfrorrCPOLinvertertoCPOLandrputisJBplsdorWSG-vhen5CKgeesfromCPOLtoCPOLnwjrtoc1DaisoutputonMOS/when5CKgoesfrorrCPOLLoCPOLinterttG.anc匚双mnput&s3npi由0ra中3。wrenSCago2sfremCPOLirwifld:oCPOL5ORLER0R/W白l(Md材For心门。$GlSSn(st1MSBfnl40Ba2_E；4:C；OkOORMBaude怔exponenlv，umBAUDjE愚幅中HhEAUQMcerdssthsUARTbHL.d旧值

15、用甘SP厂含.就SOKclocMy于表4.8.7U0GCR寄存器UOBUF(OxC1)-USART0Receive/transmitDataBuffer6UNameResetFVWDescription!7:QDATA7:00x00RA/VUSARTreceiveardtransmitdata.WhenwritingihisregisterthedatawrittianisiMittsntotheinternaLtransmitdataregister.Whanreadingthisregister,thedatafromthinternraddataregisterisread.表4.8.8

16、U0BUF奇仔器UOBAUD(0xC2)-USART0BaudRateControlBitNameResetwwDescription7:0:0jOmODRAWBaudratemantissavalue.BAUD_EalongwithBAUD_MdecidestheUARTbaudratetheSPlmasterSCKclockfrequency衣41.8.9U0BAUD寄存器ADCCON1(OxB4)-ADCControl1BitNameResatR?WDescriiptian7wWW0RHGCj1dofcar匕旭口濯已中卜印bothADCHardADCLIms匕qr,i七Ifanecon/

17、arson5cotrcteTeibefore卜珀previoussatanasb*anraadTtreEOCbitwillr#ma巾Ip%0consonrotcofrpflte1consoncompiaST0RM1Starlcorsiscn.Radss1until8M电i&ionhasoamoietsd0nconflftiorma的咕粘1startacorrvstscnuquenoeifADCCOMl.STSEL=ITandno强t)Lr的runrrng.5：4占一一：一11RWStartseva.S&fi-ctswhichavanLthatwillstarta广扈自8n56当心力Lenos.

18、00ExHrria1tf佻杏.G1Fulspa&d.刍notwarttoringgerfi.10Tirner1dia-nnai0mnnar自自葩利11ADCCON1.ST=13:2S27RL1:aR.WContTcisUia1tfrariomgeralariVrenrttenJC1or-L10,11tiiasortingaulomatiiiyistuTntoW.anocarationhasoorrplatfid.DONormaloprab&ri.(I3xunrolhrl01Clockth#LFSRancamounrolliftg).Smcngfrommodulator.NOTE;TiiflAD

19、Crustterunningrordflrfirt-eSfiQdi门存怕start.Stooped.Rarrdomer&rBtor15turretoff.1:0事11RWRgser应，Aa/ssetto11表4.8.10ADCCON1寄存器ADCC0N3(0xB6)-ADCControl3atNameRjQS9t图wneriptiDH7:6三更三I：12：片/wSeiectsreferencevoltagejdfortextra8门ver知on00Internal1.25VrflfarsrcaClExTnalrfifararrcflcmA1N7pmAVDD.SOCpinExtemmrafara

20、rcesnAIN6-AIH7diffarantiaimput文4EDIV；1：OJ二SatstK&sacimaiianml自L姐士brtheoxtr自回？自专曲1.Tn型dKirnatcrrsteais?eternnresth#rssoiutiQraidTimerequirectocoirpiatemecontes4n,0564aecratebft&ra&oiuton)011284然恒的(106gr$oiuiioti)1025Gderate(12bitsresolution)11512dficrata(14bits透印口的？3:0tpurt-01coooRjWExiraibarrei但clSe

21、值h*il白力自r白nurrt?白“ofLhfi自sumconsonthatsoatroutaft白aconversorsequencahasandad.Aslongastnesebitsrennair1stOODC,noxt*aconversion&pe.也rm曲广.If中西ADCnotrunfimg,writingtot卜旧bitswilljiggerasngiecc?nrsonfrurrtheselectedextrachanreThetktsare3Ltarratcaliyc两目性Wtreextraoonv&rstrnliasfffiiSh&d.0000AINO00G1AIN10010

22、AIN20011AIN30100AIN40101AINS0110AIN60111AIN?10GCAINOAINI1001AIN2-AIN31010AIN4-AIN51011AINAIN71100GND1101Posrtireference1110Tfinraturs1111VDD/3表4.8.11ADCCON3W存器以上图表列举了和CC2431处理器A/D转换操作定相关的寄存器，其中包括CLKCON!制寄存器，用来控制系统时钟源，SLEE商存器用来控制各种时钟源的开关和状态。PERCFG存器为外设功能控制寄存器，用来控制外设功能模式。U0CSRU0GCRU0BUFU0BAUD位串口相关寄存器。ADCCON1ADCCON3另1J为AD专换控制器和AD专换设置寄存器。3.2 软件设计关键源码分析：设置CC2430A/D输入源IO为P0_0,即压力传感器的输出IO:/*函数功能：初始化ADC入口参数：无返回值：无*说明：参考电压AVDD,转换对象是P0_0*voidInitialAD(void)(/P1outP1DIR=0x03;LED1=1;LED2=1;/P1控制LED关LEDP0DIR&=0x01;/P0_0输入模式ADCCFG|=0x012;/数据处理temp1|=temp02;temp0&=0x3f;num=(te