热敏电阻参考程序.doc

#include #include #define WORD unsigned int#define BYTE unsigned char#define AD_LU 15/*/WORD idata AD;float idata DIANYA,R,T_;BYTE code BCD_tab = 0x01,0x4f,0x12,0x06,0x4c,0x24,0x20,0x0f,0x00,0x04;BYTE code WM_tab = 0xFB,0xFD,0xFE;BYTE idata BCD_ZH3;BYTE idata tt=0;BYTE idata t=0;WORD idata XIANSHI_JISHU=0;/*sfr DM = 0xA0;sfr WM = 0x80;/*bit XIANSHI_BIT = 0;bit FUHAO_BIT = 0;bit XIANSHI_BIT_=1;/*void CONFIG()/看门狗禁止，以方便调试 PCA0MD = 0x00; /看门狗禁止 REG0CN = 0x10; /内部LDO使能 PFE0CN = 0x20; /预取指令允许位置1/- /交叉开关配置 XBR0 = 0x00; XBR1 = 0x40; P1MDIN = 0x7f; P1MDOUT = 0;/- /系统时钟配置，采用内部晶振 CLKSEL = 0x00;/时钟乘法器 OSCICN = 0x87;/振荡器使能不分频/-/T2初始化 /T2工作于自动重装载定时方式，定时时间ms，PID运算时间最短为ms TMR2CN = 0x04;/开定时器 TMR2RLH = 0xe0;/定时器重装载高字节 TMR2RLL = 0x18;/低字节 TMR2H = 0xe0;/定时器高字节 TMR2L = 0x18;/低字节 IE |= 0x20;/允许TF2L或TF2H标志中断请求 /- /VREF初始化 REF0CN = 0x13;/基准电压.2v /- /ADC0初始化 ADC0CN = 0x80;/ASC0处于使能状态，可以进行转换数据 ADC0CF = 0xf0; /- EA = 1;/开启全局中断/*void T2_INT()interrupt 5/PID采样时间，最小间隔msTMR2CN &= 0x7f;/清除TF2中断标志XIANSHI_BIT = 1;if(tt2)tt+;elsett=0;WM = 255;DM = BCD_tabBCD_ZHtt;WM = WM_tabtt;XIANSHI_JISHU+;if(XIANSHI_JISHU100) XIANSHI_JISHU+; else XIANSHI_JISHU = 0; XIANSHI_BIT_ = 1; /AD转换函数/*WORD ADC0() BYTE x; WORD y; ADC0MX = AD_LU; ADC0CN |=0x10; x = ADC0CN&0x20; while(x=0) x = ADC0CN&0x20; ADC0CN = ADC0CN&0xdf; y = 256*ADC0H+ADC0L; return y;/转换函数/*void BCD_ZHUANHUAN(int x)if(x0) x = -x; FUHAO_BIT = 1; else FUHAO_BIT = 0;BCD_ZH0 = x%10;BCD_ZH1 = x/10%10;BCD_ZH2 = x/100;/*float U_JISUAN(WORD x) return (2.200*(float)(x)/4095);float R_JISUAN(float x)return 3600.0*x/(2.58-x);float T_JISUAN(float x) float T; T = (1/(log(x/10000)/2800+1/298.15); return T;/*/主函数void mian() CONFIG(); while(1) AD = ADC0(); DIANYA =U_JISUAN(AD); R=R_JISUAN