第一次发帖,这是之前做的一个烟雾报警器,废话少说。直接上图。
仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)
Altium Designer画的原理图和PCB图如下:(51hei附件中可下载工程文件)
单片机源程序如下:
- #include <reg52.h>
- #include <intrins.h>
- #define u8 unsigned char
- #define u16 unsigned int
- #define uchar unsigned char
- #define uint unsigned int
- uchar wendu=0;
- uchar yanwu=0;
- uint shezhiwendu;
- uchar shezhiyanwu;
- uchar Mode=0;
- sbit LedRed=P2^2;
- sbit LedYellow=P2^4;
- sbit Buzzer=P2^0;
- sbit LCDRS=P2^7;
- sbit LCDEN=P2^6;
- sbit D0= P0^0;
- sbit D1= P0^1;
- sbit D2= P0^2;
- sbit D3= P0^3;
- sbit D4= P0^4;
- sbit D5= P0^5;
- sbit D6= P0^6;
- sbit D7= P0^7;
- void delay(uint z)
- {
- uint i,j;
- for(i=0;i<z;i++)
- for(j=0;j<110;j++);
- }
- void LCDdelay(uint z)
- {
- uint x,y;
- for(x=z;x>0;x--)
- for(y=10;y>0;y--);
- }
- void LCD_WriteData(u8 dat)
- {
- if(dat&0x01)D0=1;else D0=0;
- if(dat&0x02)D1=1;else D1=0;
- if(dat&0x04)D2=1;else D2=0;
- if(dat&0x08)D3=1;else D3=0;
- if(dat&0x10)D4=1;else D4=0;
- if(dat&0x20)D5=1;else D5=0;
- if(dat&0x40)D6=1;else D6=0;
- if(dat&0x80)D7=1;else D7=0;
- }
- void write_com(uchar com)
- {
- LCDRS=0;
- LCD_WriteData(com);
- LCDdelay(5);
- LCDEN=1;
- LCDdelay(5);
- LCDEN=0;
- }
- void write_data(uchar date)
- {
- LCDRS=1;
- LCD_WriteData(date);
- LCDdelay(5);
- LCDEN=1;
- LCDdelay(5);
- LCDEN=0;
- }
- void SelectPosition(unsigned char x,unsigned char y)
- {
- if (x==0)
- {
- write_com(0x80+y);
- }
- else
- {
- write_com(0xC0+y);
- }
- }
- void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
- {
- SelectPosition(x,y) ;
- while (*s)
- {
- write_data( *s);
- s ++;
- }
- }
- void LCD_Write_Char(u8 x,u8 y,u16 s,u8 l)
- {
- SelectPosition(x,y) ;
- if(l>=5)
- write_data(0x30+s/10000%10);
- if(l>=4)
- write_data(0x30+s/1000%10);
- if(l>=3)
- write_data(0x30+s/100%10);
- if(l>=2)
- write_data(0x30+s/10%10);
- if(l>=1)
- write_data(0x30+s%10);
- }
- void Init1602()
- {
- uchar i=0;
- write_com(0x38);
- write_com(0x0c);
- write_com(0x06);
- write_com(0x01);
-
- }
- void Display_1602(shezhiwendu,shezhiyanwu,c,temp)
- {
- LCD_Write_Char(0,6,shezhiwendu,2) ;
- LCD_Write_Char(0,13,shezhiyanwu,3) ;
- //wendu
- LCD_Write_Char(1,6,c/10,2) ;
- write_data('.');
- LCD_Write_Char(1,9,c%10,1) ;
- //yanwu
- LCD_Write_Char(1,13,temp,3) ;
- }
- //ad0832 函数
- sbit ADCS =P1^5;
- sbit ADCLK =P1^2;
- sbit ADDI =P1^3;
- sbit ADDO =P1^3;
- unsigned int Adc0832(unsigned char channel)
- {
- uchar i=0;
- uchar j;
- uint dat=0;
- uchar ndat=0;
- uchar Vot=0;
- if(channel==0)channel=2;
- if(channel==1)channel=3;
- ADDI=1;
- _nop_();
- _nop_();
- ADCS=0;//拉低CS端
- _nop_();
- _nop_();
- ADCLK=1;//拉高CLK端
- _nop_();
- _nop_();
- ADCLK=0;//拉低CLK端,形成下降沿1
- _nop_();
- _nop_();
- ADCLK=1;//拉高CLK端
- ADDI=channel&0x1;
- _nop_();
- _nop_();
- ADCLK=0;//拉低CLK端,形成下降沿2
- _nop_();
- _nop_();
- ADCLK=1;//拉高CLK端
- ADDI=(channel>>1)&0x1;
- _nop_();
- _nop_();
- ADCLK=0;//拉低CLK端,形成下降沿3
- ADDI=1;//控制命令结束
- _nop_();
- _nop_();
- dat=0;
- for(i=0;i<8;i++)
- {
- dat|=ADDO;//收数据
- ADCLK=1;
- _nop_();
- _nop_();
- ADCLK=0;//形成一次时钟脉冲
- _nop_();
- _nop_();
- dat<<=1;
- if(i==7)dat|=ADDO;
- }
- for(i=0;i<8;i++)
- {
- j=0;
- j=j|ADDO;//收数据
- ADCLK=1;
- _nop_();
- _nop_();
- ADCLK=0;//形成一次时钟脉冲
- _nop_();
- _nop_();
- j=j<<7;
- ndat=ndat|j;
- if(i<7)ndat>>=1;
- }
- ADCS=1;//拉低CS端
- ADCLK=0;//拉低CLK端
- ADDO=1;//拉高数据端,回到初始状态
- dat<<=8;
- dat|=ndat;
- return(dat); //return ad data
- }
- // 温度传感器模块代码 单片机教材
- sbit DQ = P1^0;
- void Delay_DS18B20(int num)
- {
- while(num--) ;
- }
- void Init_DS18B20(void)
- {
- unsigned char x=0;
- DQ = 1;
- Delay_DS18B20(8);
- DQ = 0;
- Delay_DS18B20(80);
- DQ = 1;
- Delay_DS18B20(14);
- x = DQ;
- Delay_DS18B20(20);
- }
- unsigned char ReadOneChar(void)
- {
- unsigned char i=0;
- unsigned char dat = 0;
- for (i=8;i>0;i--)
- {
- DQ = 0;
- dat>>=1;
- DQ = 1;
- if(DQ)
- dat|=0x80;
- Delay_DS18B20(4);
- }
- return(dat);
- }
- void WriteOneChar(unsigned char dat)
- {
- unsigned char i=0;
- for (i=8; i>0; i--)
- {
- DQ = 0;
- DQ = dat&0x01;
- Delay_DS18B20(5);
- DQ = 1;
- dat>>=1;
- }
- }
- unsigned int ReadTemperature(void)
- {
- unsigned char a=0;
- unsigned char b=0;
- unsigned int t=0;
- float tt=0;
- Init_DS18B20();
- WriteOneChar(0xCC);
- WriteOneChar(0x44);
- Init_DS18B20();
- WriteOneChar(0xCC);
- WriteOneChar(0xBE);
- a=ReadOneChar();
- b=ReadOneChar();
- t=b;
- t<<=8;
- t=t|a;
- tt=t*0.0625;
- t= tt*10+0.5; //放大10倍输出并四舍五入
- return(t);
- }
- u16 check_wendu(void)
- {
- u16 c;
- c=ReadTemperature()-5;
- if(c<1) c=0;
- if(c>=999) c=999;
- return c;
- }
- //按键
- sbit Key1=P1^6;
- sbit Key2=P1^7;
- sbit Key3=P3^2;
- #define KEY_SET 1
- #define KEY_ADD 2
- #define KEY_MINUS 3
- u8 Key_Scan()
- { static u8 key_up=1;
- if(key_up&&(Key1==0||Key2==0||Key3==0))
- {
- delay(10);
- key_up=0;
- if(Key1==0) return 1;
- else if(Key2==0)return 2;
- else if(Key3==0)return 3;
- }
- else if(Key1==1&&Key2==1&&Key3==1)
- key_up=1;
- return 0;
- }
- void main (void)
- {
- u8 key;
- wendu=check_wendu();
- Init1602();
- LCD_Write_String(0,0,"SET T:00 E:000");
- LCD_Write_String(1,0,"NOW T:00.0 E:000");
- delay(1000);
- wendu=check_wendu();
-
- while (1)
- {
- key=Key_Scan();
- yanwu=Adc0832(0);
- wendu=check_wendu();
-
- if(key==KEY_SET)
- {
- Mode++;
- }
-
- switch(Mode)
- {
- case 0:
- {
- Display_1602(shezhiwendu,shezhiyanwu,wendu,yanwu);
- if(yanwu>=shezhiyanwu) //温度大于预设温度
- {
- LedRed=0;
- Buzzer=0; //报警器报警
- }
- else
- {
- LedRed=1; //关掉报警灯
- }
- if(wendu>=(shezhiwendu*10)) //温度大于等于预设温度值时
-
- {
- Buzzer=0;
- LedYellow=0;
- }
- else
- {
- LedYellow=1;
- }
- if((yanwu<shezhiyanwu)&&(wendu<(shezhiwendu*10)))
- {
- Buzzer=1;
- }
- break;
- }
- case 1://预设温度模式
- {
- SelectPosition(0,5) ;
- write_com(0x0d);
- if(key==KEY_ADD)
- {
- shezhiwendu++;
- if(shezhiwendu>=99)
- shezhiwendu=99;
- ……………………
- …………限于本文篇幅 余下代码请从51黑下载附件…………
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