C8051F040 内部温度传感器C程序.doc

附录一：/内部温度传感器调试程序/利用过采样实现16位精度/ADC0_TEMP_PRO.c#include #define ADC0START temppage=SFRPAGE;SFRPAGE=0x00;AD0BUSY=1;SFRPAGE=temppage#define STACK_LEN 128/采样128次，再将128个数据总和除以8/处理后的数据相当于16个原始数据之和，在数值表现形式上为16bittypedef unsigned int uint;typedef unsigned char uchar;typedef unsigned long ulong;sfr16 RCAP2=0xca;sfr16 RCAP3=0xca;sfr16 RCAP4=0xca;sfr16 TMR4=0xcc;sfr16 TMR3=0xcc;sfr16 TMR2=0xcc;sfr16 PCA0CP0=0xfb;sfr16 PCA0CP1=0xfd;sfr16 PCA0CP2=0xe9;sfr16 PCA0CP3=0xeb;sfr16 PCA0CP4=0xed;sfr16 PCA0CP5=0xe1;sfr16 ADC0VAL=0xbe;sfr16 ADC0GT=0xc4;sfr16 ADC0LT=0xc6;uchar temppage;bit isnewdata;uint kk;float temp;uchar stack_index;ulong total;xdata float t20;/存放温度检测数据，为20个数据xdata uint mystackSTACK_LEN;/过采样数据数组void adc0_mux(uchar type,uchar source);void adc0_source(uchar source);void p3anolog_ini(uchar port);void HVDA_ini(uchar gaind);void adc0_ini();void delay1ms(uint time);void config();void adc0_mux(uchar type,uchar source)/type 配置测量方式为差动还是单端输入/source 为ADC0通道选择(共有9个通道)SFRPAGE=0x00;AMX0CF=type;AMX0SL=source;void adc0_source(uchar source)/ADC0通道选择，为adc0_mux()的简化函数SFRPAGE=0x00;AMX0SL=source;void p3anolog_ini(uchar port)/配置p3口模拟输入管脚SFRPAGE=0x00;AMX0PRT=port;SFRPAGE=0x0f;P3MDIN&=port;/将相应管脚配置成模拟输入口void HVDA_ini(uchar gaind)/高压差动放大器配置SFRPAGE=0x00;HVA0CN=gaind;void adc0_ini()SFRPAGE=0x00;ADC0CF=0x80;/ADC0时钟为系统时钟17分频，PGA增益为1ADC0CN=0x80;/*AD0EN=1，ADC0模块使能AD0TM=0,ADC0为连续跟踪模式AD0CM1:AD0CM0=00b,为AD0BUSY启动方式AD0LJST=0,数据存储格式右对齐，即ADC0H存放12bit高四位*/REF0CN&=0x0f;/AD0VRS=0,ADC0参考电压为VREFAREF0CN|=0x07;/TEMPE=1,内部温度传感器工作/*BIASE=1,偏移产生器工作REFBE=1,内部参考电平工作，电路部分须将VREF参考输出(C8051F40的第12管脚)与VREF0(C8051F040的16管脚相连，并最好并联一个4.7uF和0.1uF的旁路电容以电平滤波*/adc0_source(9);/选择第9通道，即选择温度信号为AD转换EIE2 |= 0x02; /开ADC0中断void delay1ms(uint time)/延迟1msuint i;uint j;for (i=0;itime;i+)for(j=0;j300;j+);void config()/crossbar 使能，但并没有进行外围设备配置WDTCN = 0x07;/ Watchdog Timer Control Register WDTCN = 0xDE; / Disable WDT WDTCN = 0xAD;SFRPAGE = 0x0F;XBR0 = 0x00;/ XBAR0: Initial Reset ValueXBR1 = 0x00;/ XBAR1: Initial Reset ValueXBR2 = 0x40;/ crossbar使能与否并不影响此程序运行 XBR3 = 0x00; / XBAR3: Initial Reset Value SFRPAGE = 0x0F; P0MDOUT = 0x00; / Output configuration for P0 P1MDOUT = 0x00; / Output configuration for P1 P2MDOUT = 0x00; / Output configuration for P2 P3MDOUT = 0x00; / Output configuration for P3 P4MDOUT = 0x00; / Output configuration for P4P5MDOUT = 0x00; / Output configuration for P5P6MDOUT = 0x00; / Output configuration for P6P7MDOUT = 0x00; / Output configuration for P7 P1MDIN = 0xFF; / Input configuration for P1P2MDIN = 0xFF; / Input configuration for P2P3MDIN = 0xFF; / Input configuration for P3SFRPAGE = 0x0F; CLKSEL = 0x00; / Oscillator Clock SelectorOSCXCN = 0x00;/ EXTERNAL Oscillator Control RegisterOSCICN = 0x84;/ Internal Oscillator Control Registervoid main()char i;config();adc0_ini();/ADC0初始化ADC0START;/ADC0启动EA=1;i=0;stack_index=0;while(1)if(isnewdata)/由该位查询ADC0转化值是否更新if(stack_index=STACK_LEN)for(i=0,total=0;i19)i=0;/在此设断点，观察程序运行结果delay1ms(100);ADC0START;void ADC0_ISR() interrupt 15/ADC0