基于Atmega16的温度采集和阈值报警课程实验以及Proteus仿真.zip

#include<iom16v.h> #include <macros.h> #include "LCD1602.h" #include "DS18B20.h" unsigned char L1[16];//显示第一行 unsigned char L2[16];//显示第二行 unsigned int temp_h,temp_l,led_flag=0; extern unsigned int temper; void delay_nus(unsigned int n) //8*0.125=1us { int i,j; for(j=0;j<8;j++) { for (i=0;i<n;i++) NOP(); } } void delay_1ms(void) { unsigned char i,j; for(i=0;i<40;i++) for(j=0;j<33;j++) {;} } void delay_xms(unsigned int x) { unsigned int i; for(i=0;i<x;i++) { delay_1ms(); } } unsigned char keyscan(void)//key1:+;key2:-;key3:FUN;key4:OK; { unsigned int key; if((PIND|0x0F)!=0xFF) { delay_xms(70); if((PIND|0x0F)!=0xFF) { key=(PIND|0x0F); switch(key) { case 0xEF:key=1;break; case 0xDF:key=2;break; case 0xBF:key=3;break; case 0x7F:key=4;break; default:key=0;break; } } return key; } } void led_show(void) { if(temper>temp_l) { if(temper>temp_h) { led_flag=1; } else { led_flag=0; } } else { led_flag=2; } } void main(void) { unsigned int plus,minus,fun,set,temp_ht,temp_lt,i; temp_h=300,temp_l=100,plus=0,minus=0,fun=0,set=0; temp_ht=temp_h; temp_lt=temp_l; DDRA=0xFF; DDRB=0xFF; DDRC = 0x10; DDRD=0x0F; PORTA=0xFF; PORTB=0xFF; PORTC = 0x10; PORTD=0xFF; LCD1602_init(); while(1) { get_tem(); led_show(); switch(led_flag) { case 0: PORTD|=BIT(0);PORTD|=BIT(1);break; case 1: PORTD&=~BIT(0);PORTD|=BIT(1);break; case 2: PORTD|=BIT(0);PORTD&=~BIT(1);break; default: break; } switch(keyscan()) { case 1: plus=1;break; case 2: minus=1;break; case 3: fun++;if(fun==3){fun=0;}temp_ht=temp_h;temp_lt=temp_l;break; case 4: set=1;break; default: break; } if(plus==1) { plus=0; switch(fun) { case 0: break; case 1: temp_ht+=10;break; case 2: temp_lt+=10;break; default: break; } } if(minus==1) { minus=0; switch(fun) { case 0: break; case 1: temp_ht-=10;break; case 2: temp_lt-=10;break; default: break; } } if(set==1) { switch(fun) { case 0: break; case 1: temp_h=temp_ht;break; case 2: temp_l=temp_lt;break; default: break; } set=0; fun=0; } if(fun==0) { L2[0]='H'; L2[1]=temp_h/100+'0'; L2[2]=temp_h%100/10+'0'; L2[3]='.'; L2[4]=temp_h%10+'0'; L2[5]=' '; L2[6]=' '; L2[7]='L'; L2[8]=temp_l/100+'0'; L2[9]=temp_l%100/10+'0'; L2[10]='.'; L2[11]=temp_l%10+'0'; LCD_write_string(0,0,L1); LCD_write_string(0,1,L2); } else if(fun==1) { for(i=0;i<16;i++) { L2[i]=' '; } L2[0]='S'; L2[1]='E'; L2[2]='T'; L2[3]=' '; L2[4]='H'; L2[5]=temp_ht/100+'0'; L2[6]=temp_ht%100/10+'0'; L2[7]='.'; L2[8]=temp_ht%10+'0'; LCD_write_string(0,0," "); LCD_write_string(0,1,L2); } else { for(i=0;i<16;i++) { L2[i]=' '; } L2[0]='S'; L2[1]='E'; L2[2]='T'; L2[3]=' '; L2[4]='L'; L2[5]=temp_lt/100+'0'; L2[6]=temp_lt%100/10+'0'; L2[7]='.'; L2[8]=temp_lt%10+'0'; LCD_write_string(0,0," "); LCD_write_string(0,1,L2); } } }