C8051F040內(nèi)部溫度傳感器C程序

1、附錄/內(nèi)部溫度傳感器調(diào)試程序/利用過采樣實現(xiàn)16位精度/ADC0START/ADC0_TEMP_PRO.c#includeADC0START#definetemppage=SFRPAGE;SFRPAGE=0 x00;AD0BUSY=1;SFRPAGE=temppage#defineSTACK_LEN128/采樣128次，再將128個數(shù)據(jù)總和除以8處理后的數(shù)據(jù)相當(dāng)于16個原始數(shù)據(jù)之和，在數(shù)值表現(xiàn)形式上為16bittypedefunsignedintuint;typedefunsignedcharuchar;typedefunsignedlongulong;sfr16RCAP2=0 xca;sfr

2、16RCAP3=0 xca;sfr16RCAP4=0 xca;sfr16TMR4=0 xcc;sfr16TMR3=0 xcc;sfr16TMR2=0 xcc;sfr16PCA0CP0=0 xfb;sfr16PCA0CP1=0 xfd;sfr16PCA0CP2=0 xe9;sfr16PCA0CP3=0 xeb;sfr16PCA0CP4=0 xed;sfr16PCA0CP5=0 xe1;sfr16ADC0VAL=0 xbe;sfr16ADC0GT=0 xc4;sfr16ADC0LT=0 xc6;uchartemppage;bitisnewdata;uintkk;floattemp;ucharsta

3、ck_index;ulongtotal;xdatafloatt20;存放溫度檢測數(shù)據(jù)，為20個數(shù)據(jù)xdatauintmystackSTACK_LEN;/過采樣數(shù)據(jù)數(shù)組voidadc0_mux(uchartype,ucharsource);voidadc0_source(ucharsource);voidp3anolog_ini(ucharport);voidHVDA_ini(uchargaind);voidadc0_ini();voiddelay1ms(uinttime);voidconfig();voidadc0_mux(uchartype,ucharsource)/type配置測量方式為差

4、動還是單端輸入/source為ADC0通道選擇(共有9個通道)SFRPAGE=0 x00;AMX0CF=type;AMX0SL=source;voidadcO_source(ucharsource)/ADCO通道選擇，為adcO_mux()的簡化函數(shù)SFRPAGE=0 x00;AMX0SL=source;voidp3anolog_ini(ucharport)配置p3口模擬輸入管腳SFRPAGE=0 x00;AMX0PRT=port;SFRPAGE=0 x0f;P3MDIN&=port;將相應(yīng)管腳配置成模擬輸入口voidHVDA_ini(uchargaind)/高壓差動放大器配置SFRPAGE=

5、0 x00;HVA0CN=gaind;voidadc0_ini()SFRPAGE=0 x00;ADC0CF=0 x80;/ADC0時鐘為系統(tǒng)時鐘17分頻，PGA增益為1ADC0CN=0 x80;/*AD0EN=1，ADC0模塊使能AD0TM=0,ADC0為連續(xù)跟蹤模式AD0CM1:AD0CM0=00b,為AD0BUSY啟動方式AD0LJST=0,數(shù)據(jù)存儲格式右對齊，即ADC0H存放12bit高四位*/REF0CN&=0 x0f;/AD0VRS=0,ADC0參考電壓為VREFAREF0CNI=0 x07;/TEMPE=1,內(nèi)部溫度傳感器工作/*BIASE=1,偏移產(chǎn)生器工作REFBE=1,內(nèi)部參

6、考電平工作，電路部分須將VREF參考輸出(C8051F40的第12管腳)與VREF0(C8051F040的16管腳相連，并最好并聯(lián)一個4.7uF和0.1uF的旁路電容以電平濾波*/adc0_source(9);選擇第9通道，即選擇溫度信號為AD轉(zhuǎn)換EIE2|=0 x02;開ADC0中斷voiddelay1ms(uinttime)/延遲1msuinti;uintj;for(i=0;itime;i+)for(j=0;j300;j+);voidconfig()/crossbar使能，但并沒有進行外圍設(shè)備配置WDTCN=0 x07;/WatchdogTimerControlRegisterWDTCN=

7、0 xDE;/DisableWDTWDTCN=0 xAD;SFRPAGE=0 x0F;XBR0=0 x00;/XBAR0:InitialResetValueXBR1=0 x00;/XBAR1:InitialResetValueXBR2=0 x40;/crossbar使能與否并不影響此程序運行XBR3=0 x00;/XBAR3:InitialResetValueSFRPAGE=0 x0F;P0MDOUT=0 x00;/OutputconfigurationforP0P1MDOUT=0 x00;/OutputconfigurationforP1P2MDOUT=0 x00;/Outputconfig

8、urationforP2P3MDOUT=0 x00;/OutputconfigurationforP3P4MDOUT=0 x00;/OutputconfigurationforP4P5MDOUT=0 x00;/OutputconfigurationforP5P6MDOUT=0 x00;/OutputconfigurationforP6P7MDOUT=0 x00;/OutputconfigurationforP7P1MDIN=0 xFF;/InputconfigurationforP1P2MDIN=0 xFF;/InputconfigurationforP2P3MDIN=0 xFF;/Input

9、configurationforP3SFRPAGE=0 x0F;CLKSEL=0 x00;/OscillatorClockSelectorOSCXCN=0 x00;/EXTERNALOscillatorControlRegisterOSCICN=0 x84;/InternalOscillatorControlRegistervoidmain()chari;config();adc0_ini();/ADC0初始化ADC0START;/ADC0啟動EA=1;i=0;stack_index=0;while(1)if(isnewdata)由該位查詢ADCO轉(zhuǎn)化值是否更新if(stack_index=STACK_LEN)for(i=0,total=0;i19)i=0;在此設(shè)斷點，觀察程序運行結(jié)果delay1ms(100);ADC0START;voidADC0_ISR()interrupt15/ADC0中斷SFRPAGE=