LCD1602显示,在实验室使用单片机板成功在仿真上无法显示

ID:1096616 · 发表于 2023-11-17 09:16

这个需要到LCD显示，但是我在单片机板上显示成功，但是在仿真上无法显示，电路连接应该没有错
#include <reg52.h>
#define uchar  unsigned char
#define uint  unsigned       int
#define out P2
sbit LED =P1^4;
sbit key1=P3^2;
sbit key2=P3^3;
sbit key3=P3^4;
sbit key4=P3^5;
sbit lcdrs=P0^5;
sbit lcdrw=P0^6;
sbit lcden=P0^7;

void check_busy();
void write_cmd(uchar cmd);
void write_data(uchar dat);
void write_str(uchar *str);
void lcd_init();
void T0_init();//T0初始化
void display(uchar date);
void keyscan();
void delay(uint z);

uchar sec=0,count=0,flag=0,keyflag=0;

void main()
{  T0_init();
  lcd_init();
write_cmd(0x82);
write_str("sec:");
  while(1)
  {       keyscan();
  switch(keyflag)
  {  case 1:TR0=1;LED=0;break;
   case 2:TR0=0;LED=1;break;
  }
display(sec);
  }
}
void T0_init()
{       TMOD=0X01;
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      ET0=1;
      EA=1;
}

void lcd_init()
{ write_cmd(0x38);
write_cmd(0x0c);
write_cmd(0x06);
write_cmd(0x01);
delay(1);
}

void write_cmd(uchar cmd)
{       check_busy();
      lcdrs=0;
      lcdrw=0;
      lcden=0;
      out=cmd;
      lcden=1;
      delay(1);
      lcden=0;
      delay(1);
}
void check_busy()
{  uchar dt;
do
{dt=0xff;
lcdrs=0;
      lcdrw=1;
      lcden=0;
      lcden=1;
      dt=out;
}while(dt&0x80);
lcden=0;
}
void write_data(uchar dat)
{       lcdrs=1;
      lcdrw=0;
      lcden=0;
      out=dat;
      lcden=1;
      delay(1);
      lcden=0;
      delay(1);

}
void delay(uint z)
{ uint i,j;
  for(j=z;j>0;j--)
for(i=110;i>0;i--);
}
void write_str(uchar *str)
{  while(*str!='\0')
      {
         write_data(*str++);
         delay(5);
      }
}

void T0_it()interrupt 1
{
         TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      count++;
      if(count>=20)
      { count=0;
         sec++;
      }
      if(sec>=60)
      {sec=0;flag=1;  }

}
void display(uchar date)
{       write_cmd(0x88);
write_data(date/10+0x30);
      write_cmd(0x89);
      write_data(date%10+0x30);
}
void keyscan()
{       key1=1;
if(key1==0)
      {       delay(10);
         if(key1==0)
         { while(!key1);
            keyflag=1;
         }
      }

      key2=1;
if(key2==0)
      {       delay(10);
         if(key2==0)
         { while(!key2);
            keyflag=2;
         }
      }

      if(key3==0)
      {sec++;
      if(sec==60)sec=60;}

      if(key4==0)
      {sec--;

      if(sec<=0)sec=0;}

}