51danpianji.tar.gz_温度报警 仿真

#include "reg51.h" #include "math.h" #include "INTRINS.h" #define uchar unsigned char #define uint unsigned int sbit rs=P3^5; sbit lcden=P3^4; sbit DQ = P1^0; //sbit up = P0^1; //sbit down = P0^2; sbit condition = P0^0; //unsigned char musicNum; sbit ring = P0^3; uchar flag_get,num,tflag; //tflag温度正负标识 uint temp; int top = 70; int bottom = -20; unsigned char code str1[]={"temper top bot"}; uchar bai,shi,ge,xiao,flagdat,tflagdat,bflagdat; uchar TempH,TempL; void delay(uint x) { uint a,b; for(a=x;a>0;a--) for(b=10;b>0;b--); } void delay_9us(uint i) //延时9us { while(i--); } void delay_5us(uchar i) { while(i--); } void delay_1ms(uint count) { uint i,j; for(i = 0;i<count;i++) { for(j = 0;j<120;j++); } } void write_com(uchar com)//根据时序图写出来的写指令函数，字符形式 { P2=com; rs=0; lcden=0; delay(10); lcden=1; delay(10); lcden=0; } void write_date(uchar date)//根据时序图写出来的写数据函数，字符形式，也可以用16进制给指令指针 { P2=date; rs=1; lcden=0; delay(10); lcden=1; delay(10); lcden=0; } void display(unsigned char *p)//显示字符串// { while(*p!='\0') { write_date(*p); p++; delay_1ms(1); } } void init() //1602初始化 { write_com(0x38); //设置16×2显示，5×7点阵，8位数据接口 delay(10); write_com(0x0c); //开显示不显示光标 delay(10); write_com(0x06); //读写一字符后地址指针加1，光标加1，整屏显示不移动 delay(10); write_com(0x01); //清屏 delay(10); } void Init_DS18B20(void) { unsigned char x = 0; DQ = 1;//DQ复位 delay_9us(8); //稍作延迟 DQ = 0; delay_9us(80); //精确延时约480us DQ = 1; delay(40);//等待DQ返回0 x = DQ;//稍作延迟后 如果x = 0初始化成功，x = 1则初始化失败 delay_9us(50); DQ = 1 ; _nop_(); _nop_(); } unsigned char ReadOneChar(void) { unsigned char i = 0; unsigned char dat = 0; for(i = 8;i>0;i--) { DQ = 0; //给脉冲信号 dat = dat>>1; DQ = 1; //给脉冲信号 _nop_(); _nop_(); _nop_(); if(DQ) dat |= 0x80; delay_9us(6); } return(dat); } void WriteOneChar(unsigned char dat) { unsigned char i = 0; for(i = 8;i>0;i--) { DQ = 0; _nop_(); _nop_(); DQ = dat&0x01; delay_9us(6); DQ = 1; dat = dat>>1; } delay(5); } unsigned int ReadTemperature(void) { uchar a = 0; uint b = 0; uint t =0; Init_DS18B20(); WriteOneChar(0xcc);//跳过读序号列号操作 WriteOneChar(0x44);//启动温度转换 delay_1ms(750); Init_DS18B20(); WriteOneChar(0xcc);//跳过读序号列号操作 WriteOneChar(0xbe);//启动温度转换 a = ReadOneChar(); b = ReadOneChar(); b = b<<8; t = a+b; return(t); } void display_tem() { temp = ReadTemperature(); if(temp>=0x0fff) { temp = ~temp; temp += 1; tflag = 1; } else { tflag = 0; } TempH = temp>>4; TempL = temp&0x0f; TempL = TempL*0.625+0.375; if(bai == 0x30) { bai = 0x20; } bai = TempH/100+0x30; shi = (TempH%100)/10+0x30; ge = (TempH%100)%10+0x30; xiao = TempL+0x30; if(tflag == 0) { flagdat = 0x20;//正温度不显示负号 } else { flagdat = 0x2d; } if(bai == 0x30) { bai = 0x20; if(shi == 0x30) { shi = 0x20; } } write_com(0x80+0x40); //将程序指针放到第二行，在第二行写内容 write_date(flagdat); write_date(bai); write_date(shi); write_date(ge); write_date('.'); write_date(xiao); } void display_top() { uchar topflag,tshi,tge; uint to; if(top <= 0) { to = 0 - top; topflag = 1; } else { topflag = 0; to = top; } if(topflag == 0) { tflagdat = 0x20;//正温度不显示负号 } else { tflagdat = 0x2d; } tshi = to/10+0x30; tge = to%10+0x30; write_com(0x80+0x47); //将程序指针放到第二行，在第二行写内容 write_date(tflagdat); write_date(tshi); write_date(tge); } void display_bottom() { uint bot; uchar bflag,bshi,bge; if(bottom <= 0) { bot = 0 - bottom; bflag = 1; } else { bflag = 0; bot = bottom; } if(bflag == 0) { bflagdat = 0x20;//正温度不显示负号 } else { bflagdat = 0x2d; } bshi = bot/10+0x30; bge = bot%10+0x30; write_com(0x80+0x4b); //将程序指针放到第二行，在第二行写内容 write_date(bflagdat); write_date(bshi); write_date(bge); } void main() { IT0=1; //下降沿触发 IT1=1; //下降沿触发 PX0=1; EA=1; EX1=1; EX0=1; init(); display(str1); while(1) { display_tem(); display_top(); display_bottom(); if(tflag == 1) { if(bottom < 0&&top < 0) { if(TempH>(0-bottom)|| TempH<(0-top)) { ring = 0; } else { ring = 1; } } else if(bottom < 0&&top >= 0) { if(TempH<(0-bottom)) { ring = 0; } } else { ring = 0; } } else { if(top > 0) { if(TempH>top||TempH<bottom) { ring = 0; } else { ring = 1; } } else { ring = 0; } } } } void counter0(void) interrupt 0 { if(condition == 1) { top++; } else { bottom++; } } void counter1(void) interrupt 2 { if(condition == 1) { top--; } else { bottom--; } }