Proteus仿真LCD1602只亮屏不显示字符? -

标题: Proteus仿真LCD1602只亮屏不显示字符? [打印本页]

作者: dwqwwq 时间: 2023-12-11 14:42
标题: Proteus仿真LCD1602只亮屏不显示字符?

单片机代码及截图如下

#include "reg52.h"
#include"intrins.h"

#define uchar unsigned char
#define uint unsigned int
#define out P0
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
void lcd_initial(void);
void check_busy(void);
void write_command(uchar com);
void write_data(uchar dat);
void string(uchar ad,uchar*s);
void delay(uint);

void main(void)
{       lcd_initial();
      while(1)
      {       string(0x80,"Welcome");
            string(0xC0,"Chengdu CHINA");

            delay(1000);
            write_command(0x01);
            delay(1000);
      }
}

void delay(uint j)
{       uchar i=250;
      for( ;j>0;j--)
      {       while(--i);
            i=249;
            while(--i);
            i=250;
      }
}

void check_busy(void)
{       uchar dt;
      do
      {       dt=0xff;
      E=0;
      RS=0;
      RW=1;
      E=1;
      dt=out;
      }while(dt&0x80);
      E=0;
}

void write_command(uchar com)
{       check_busy();
      E=0;
      RS=0;
      RW=0;
      out=com;
      E=1;
      _nop_( );
      E=0;
      delay(1);
}

void write_data(uchar dat)
{       check_busy();
      E=0;
      RS=1;
      RW=0;
      out=dat;
      E=1;
      _nop_();
      E=0;
      delay(1);
}

void lcd_initial(void)
{       write_command(0x38);

      write_command(0x0F);

      write_command(0x06);

      write_command(0x01);
      delay(1);
}

void string(uchar ad,uchar *s)
{       write_command(ad);
      while(*s>0)
      {       write_data(*s++);
            delay(100);
      }
}

作者: clyf 时间: 2023-12-11 19:41
该程序的功能是在液晶屏上显示"Welcome"和"Chengdu CHINA"两行内容，每隔一段时间清除屏幕内容并重新显示。代码是没问题的，检查一下硬件吧

作者: 562652580 时间: 2023-12-11 20:21
应该是硬件有些问题

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