这个单片机程序怎么加按键，能够暂停，继续，计数？

ID:443291 · 发表于 2018-12-10 21:20

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit RS=P2^6;
sbit RW=P2^5;
sbit E=P2^7;
sbit k1=P3^1;
sbit k2=P3^0;
sbit k3=P3^2;
sbit k4=P3^3;
//sbit k1=P1^7;
//sbit k2=P1^6;
//sbit k3=P1^5;
//sbit k4=P1^4;
//sbit rd=P1^0;
unsigned char mil,sec,min,count,x;
unsigned char code table[ ]="WH JIAYOU";
unsigned char code table1[ ]=" 00:00:0 ";

void delay(uint z)
{
      uint x,y;
      for(x=0;x<z;x++)
            for(y=0;y<z;y++);
}

void write_com(uchar com)
{
      delay(1);
      RS=0;
      E=0;
      RW=0;
      delay(5);
      LCD_DATAPINS=com;
      E=1;
      delay(5);
      E=0;
}

void write_date(uchar date)
{
      delay(1);
      RS=1;
      E=0;
      RW=0;
      delay(5);
      LCD_DATAPINS=date;
      E=1;
      delay(5);
      E=0;
}

void init()
{
      uchar num;
      E=0;
      mil=0;
      sec=55;
      min=00;
      write_com(0x38);
      write_com(0x0c);
      write_com(0x06);
      write_com(0x01);
      write_com(0x80);

      for(num=0;num<9;num++)
      {
            write_date(table[num]);
      }
      write_com(0x80+0x40);
      for(num=0;num<12;num++)
      {
            write_date(table1[num]);
      }
      TMOD=0x01;
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      EA=1;
      ET0=1;
      TR0=1;
//       EX0=1;
//       EX1=1;
//       ET1=1;
//       ES=1;
}

void write_msmm(uchar add,uchar date)
{
      uchar shi,ge;
      shi=date/10;
      ge=date%10;
      write_com(0x80+0x40+add);
      write_date(0x30+shi);
      write_date(0x30+ge);
}

void write_mm(uchar a,uchar date)
{
      uchar shi;
      shi=date%10;
      write_com(0x80+0x40+a);
      write_date(0x30+shi);
}

//void keycan()
//{
//             if(k1==0)
//       {
//             delay(5);
//             if(k1==0)
//             {
//                      while(k1==0)
//                      {
//                                     TR0=~TR0;
//                      }
//             }
//       }
//}

void main()
{
      init();
      keycan();
      while(1)
      {
            if(count==2)
            {
                     count=0;
                     mil++;
                     if(mil==10)
                     {
                              mil=0;
                              sec++;
                              if(sec==60)
                              {
                                    sec=0;
                                    min++;
                                    if(sec==60)
                                    {
                                             mil=0;
                                    }
                                    write_msmm(4,min);
                              }
                              write_msmm(7,sec);
                     }
                     write_mm(10,mil);
            }
      }
}

void timer0() interrupt 1
{
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      count++;
}

ID:213173 · 发表于 2018-12-11 15:31

增加3个标志，k1开始/清0，k2暂停/继续。

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define LCD_DATAPINS P0
sbit RS=P2^6;
sbit RW=P2^5;
sbit E=P2^7;
sbit k1=P3^0;
sbit k2=P3^1;
//sbit k3=P3^2;
//sbit k4=P3^3;
uchar mil,sec,min,count;
uchar code table[ ]="WH JIAYOU";
uchar code table1[ ]=" 00:00:0 ";
bit sign_1=0,sign_2=0,sign_3=0;

void delay(uint z)
{
uint x,y;
for(x=0;x<z;x++)
for(y=0;y<100;y++);
}

void write_com(uchar com)
{
delay(1);
RS=0;
E=0;
RW=0;
delay(5);
LCD_DATAPINS=com;
E=1;
delay(5);
E=0;
}

void write_date(uchar date)
{
delay(1);
RS=1;
E=0;
RW=0;
delay(5);
LCD_DATAPINS=date;
E=1;
delay(5);
E=0;
}

void init()
{
uchar i;
E=0;
mil=0;
sec=0;
min=0;
count=0;
write_com(0x38);
write_com(0x01);
write_com(0x0c);
write_com(0x06);
write_com(0x80);

for(i=0;i<9;i++)
{
write_date(table[i]);
}
write_com(0x80+0x40);
for(i=0;i<12;i++)
{
write_date(table1[i]);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}

void write_msmm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}

void write_mm(uchar a,uchar date)
{
uchar shi;
shi=date%10;
write_com(0x80+0x40+a);
write_date(0x30+shi);
}

void keycan()
{
if(k1==0)
{
delay(5);
if(k1==0)
{
sign_1=~sign_1;//0=清0，1=开始
if(sign_1==1)
sign_2=0;
if(sign_1==0)
{
sign_2=0;
mil=0;
sec=0;
min=0;
count=0;
write_msmm(4,min);
write_msmm(7,sec);
write_mm(10,mil);
}
while(!k1);
}
}
if(k2==0)
{
delay(5);
if(k2==0)
{
sign_2=~sign_2;//0=继续，1=暂停
while(!k2);
}
}
}

void main()
{
init();
while(1)
{
keycan();
if(sign_3==1)
{
sign_3=0;
mil++;
if(mil==10)
{
mil=0;
sec++;
if(sec==60)
{
sec=0;
min++;
if(min==60)
{
min=0;
}
write_msmm(4,min);
}
write_msmm(7,sec);
}
write_mm(10,mil);
}
}
}

void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
if((sign_1==1)&&(sign_2==0))
{
count++;
if(count==2)
{
count=0;
sign_3=1;
}
}
}

ID:443291 · 发表于 2018-12-11 20:12

wulin 发表于 2018-12-11 15:31
增加3个标志，k1开始/清0，k2暂停/继续。

#include

好的，谢谢

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