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標(biāo)題: 請問單片機lcd1602程序哪里有問題,運行起來不顯示 [打印本頁]

作者: wangliqi23 時間: 2022-12-21 21:07
標(biāo)題: 請問單片機lcd1602程序哪里有問題,運行起來不顯示
#include <reg51.h>
#include <intrins.h>
sbit DB=P0;
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
void delay(unsigned int z)
{
      unsigned int x,y;
      for(x=z;x>0;x--)
            for(y=110;y>0;y--);
}

void write_dat(unsigned char dat)
{
      RW=0;RS=1;
      DB=dat;
delay(5);
      E=1;
delay(5);
      E=0;
}
void write_com(unsigned char com)
{
      RW=0;RS=0;
      DB=com;
      delay(5);
      E=1;
      delay(5);
      E=0;
}
void lcd_1602init()
{
RW=0;
      E=0;
      write_com(0x3c);
      write_com(0x0c);
      write_com(0x06);
      write_com(0x01);
      write_com(0x80);
}
void write_sfm(unsigned char add,unsigned char date)
{
      unsigned char shi,ge;
      shi=date/10;
      ge=date%10;
      write_com(0x80+add);
      write_dat(0x30+shi);
      write_dat(0x30+ge);
}
void main()
{
      lcd_1602init();
      while(1)
      {
            write_com(0xc0);
            write_dat('2');
      }
}

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