微波炉.c

单片机C语言15个实验附有原理图和程序 是我的课程作业 以经过实践验证

//anti_clock_disp.c
#include<reg51.h>
#include<stdio.h>
#include<intrins.h>
#define hi1 0xff
#define lo1 0x00
#define hi 0x3c//初值
#define lo 0xb0

sbit P30=P3^0;sbit P37=P3^7;sbit clk=P0^7;sbit sda=P0^6; //74LS164

unsigned char disp[4],mask=0xee;
unsigned char code ledk[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char min,sec,t0_count;
unsigned char key,key_flag,key_count,set_flag,run_flag,set_no=0,led_no=0;

void delay(unsigned int n)
 {unsigned int i,j;
  for(i=0;i<n;i++)
     for(j=0;j<n;j++)
       ;}
void shift(unsigned char dx)
{ unsigned char j=0;
  while(j<8)
	{if((dx&0x80)!=0) sda=1;
       else  sda=0;
	   clk=0;clk=1;
	   dx<<=1;j++;}  }
//================
void t0() interrupt 1 
{ TH0=hi;TL0=lo;t0_count++;key_count++;
  if(t0_count==20)
    {if(sec!=0)sec--;
       else if(min!=0 ){min--; sec=60; sec--;}
          t0_count=0;}} 
void t1() interrupt 3
  {P30=!P30;TH1=hi1;TL1=lo1;}
//==============
void hextodec(j,xx) 
 unsigned char j,xx;
 { disp[j]=xx/10;   j--;    disp[j]=xx%10;}
void disptoclk(void)
  {min=disp[3]*10+disp[2];
   sec=disp[1]*10+disp[0]; }
void out()
{if(run_flag==1){if(led_no==2)shift(ledk[disp[2]]|0x80);
                  else shift(ledk[disp[led_no]]);}
 
 else {if(t0_count<=10 && led_no==2)shift(ledk[disp[2]]|0x80);
         else if(t0_count%4==0 && led_no==set_no && set_flag==1)shift(0);
           else shift(ledk[disp[led_no]]);}
   P2=mask;}
//===============
unsigned char get_char()
{unsigned char key_code;
 static unsigned char column=0;
   if(P37==0 && key_flag==1){key_code=column;key_flag=0;key_count=0;}
       else key_code=0xff;
   column++;led_no++;if(column>3)column=0;if(led_no>3)led_no=0;
   mask=_crol_(mask,1);
   return key_code;}

void key_func(key)
 {switch (key)
   {case 0:  set_no=0;set_flag=1;
             break;
    case 1:  set_no++;if(set_no>3)set_no=0;break;
    case 2:  disp[set_no]++;
             if(set_no==1 && disp[set_no]>5)disp[set_no]=0;
             if(set_no==3 && disp[set_no]>1)disp[set_no]=0;
			   else if(disp[set_no]>9)disp[set_no]=0;
             break;
    case 3:  set_flag=0;run_flag=1;disptoclk();
             break;
    default: break;               }  }
//=======================
void main(void)                                                                                                                                                                                         
{unsigned char i; 
   TMOD=0x11;TH0=hi;TL0=lo;TH1=hi1;TL1=lo1;
   EA=1;ET0=1;ET1=1;TR0=1;P30=1;set_flag=1;run_flag=0;//初始化
   while(1)
   {key=get_char( );key_func(key);out();delay(20);
 	if(run_flag==1){hextodec(3,min);hextodec(1,sec);}
    if(run_flag==1 && t0_count<6){if(min%1==0 && sec==0)TR1=1;//alarm sound
                                  if(sec==30)TR1=1;
                                  if(min==0 && sec<=5 && t0_count<=10)TR1=1;}
                            else {TR1=0;P30=1;}		   
	if(run_flag==1 && min==0 && sec==0)
             {run_flag=0;set_flag=1;TR1=0;
			  for(i=0;i<4;i++)disp[i]=0;}
	if(key_flag==0 && key_count>10 && P37==1)key_flag=1; }
}