DS18B20的lcd显示.doc

#include#define uchar unsigned char#define uint unsigned int#define ulong unsigned longsbit RS=P20; sbit RW=P21; sbit E=P22; sbit keyh=P11;sbit keyl=P12;sbit DQ=P30;sbit led=P37; uchar a,b;uchar bai,shi,ge,xiaoshu;int max=100,min=10;void alert(int rel,int high,int bottom);void delay(uint x) uchar i; while(x-) for(i=0;i0;i-) DQ=0; dat=1; DQ=1; if(DQ) dat|=0x80; delayus(4); return(dat);uchar Write(uchar dat) uchar i=0; for(i=8;i0;i-) DQ=0; DQ=dat&0x01; delayus(5); DQ=1; dat=1; delayus(4); return 0;void int_(void) while(int_DS18B20(); Write(0xCC); Write(0x44);void lcd_xianshi() int TD; uchar m,n; uint i,j,t; displaystring(0x00,0,Test by DS18B20); displaystring(0x00,1,Temp:); displaystring(0x0a,1,cent); displaysingle(0x08,1,.); while(int_DS18B20(); Write(0xCC); Write(0xBE); a=Read(); b=Read(); m=a&0x0f; xiaoshu=m*10/16; i=b&0x87; j=a; t=(i4; n=b4; n=b4; n=n|a; bai=n/100; shi=(n-bai*100)/10; ge=n-(bai*100+shi*10); displaysingle(0x05,1,bai+0x30); displaysingle(0x06,1,shi+0x30); displaysingle(0x07,1,ge+0x30); displaysingle(0x09,1,xiaoshu+0x30); alert(TD,max,min);void alert2()interrupt 0 ulong p;p=100000;while(p-)if(keyh=0)delay(10);if(keyh=0) max+;lcdinit();displaystring(0x00,0,warning); displaystring(0x00,1,high=); displaysingle(0x06,1,max/100+0x30);displaysingle(0x07,1,(max%100)/10+0x30); displaysingle(0x08,1,max%10+0x30);while(!keyh);delay(10);if(keyl=0)delay(10);if(keyl=0)max-;lcdinit();displaystring(0x00,0,warning); displaystring(0x00,1,high=); displaysingle(0x06,1,max/100+0x30);displaysingle(0x07,1,(max%100)/10+0x30); displaysingle(0x08,1,max%10+0x30);while(!keyl);delay(10); void alert1()interrupt 2 ulong p;p=100000;while(p-)if(keyh=0)delay(10);if(keyh=0)min+;lcdinit();displaystring(0x00,0,warning); displaystring(0x00,1,low=);if(min=0) displaysingle(0x05,1,-);displaysingle(0x06,1,min/100+0x30);displaysingle(0x07,1,(min%100)/10+0x30);displaysingle(0x08,1,min%10+0x30);while(!keyh);delay(10); if(keyl=0) delay(10); if(keyl=0)min-;lcdinit();displaystring(0x00,0,warning); displaystring(0x00,1,low=);if(minhigh)|(relbottom) led=0; else led=1; void main(voi