lcd1602液晶显示器

朱威斯 · 发表于 2022-10-10 20:39:12

如果把引脚反接怎么办，楼下放代码和图片

huangdongqiang · 发表于 2022-10-10 20:39:51

#include <reg52.h>

typedef unsigned char uchar;
typedef unsigned int uint;

sbit RS = P3^5;
sbit RW = P3^6;
sbit EN = P3^4;
//判断液晶忙，如果忙则等待
void Read_Busy()
{
uchar busy;
P0 = 0xff;
RS = 0;
RW = 1;
do
{
EN = 1;
busy = P0;
EN = 0;
}while(busy & 0x80);
}
//写LCD1602命令一个字节
void Write_Cmd(uchar cmd)
{
Read_Busy();//判断忙
RS = 0;
RW = 0;
P0 = cmd;
EN = 1;
EN = 0;
}
//写一个字节数据
void Write_Dat(uchar dat)
{
Read_Busy();
RS = 1;
RW = 0;
P0 = dat;
EN = 1;
EN = 0;
}

//高低位翻转函数
uchar Math_Subwith(uchar dat)
{
      uchar i,temp;
      temp = 0x00;
      for(i=0;i<8;i++)
      {
            temp >>= 1;
            if((dat<<i)&0x80)
            {
                     temp |= 0x80;
            }
            else
            {
                     temp &= 0x7F;
            }
      }
      return temp;
}
void main()
{
Math_Subwith;
Write_Cmd(0x38);//设置16*2显示
Write_Cmd(0x0f);//开显示显示光标，光标闪烁
Write_Cmd(0x01);//清屏

Write_Cmd(0x06);//地址指针移位命令
Write_Cmd(0x80 | 0x06);//显示地址

Write_Dat(1 + '0');
Write_Dat(2 + '0');
Write_Dat(3 + '0');
Write_Dat(4 + '0');
Write_Dat(5 + '0');
while(1);
}