#include

#define uc unsigned char

#define ui unsigned int

sbit RS=P3^5;

sbit RW=P3^6;

sbit E=P3^4;

void read_busy()//判斷忙不忙；

{

uc busy;

P0=0xff;//

RS=0;

RW=1;

do

{

E=1;

busy=P0;

E=0;

}

while(busy&0x80);//若忙，則一直循環(huán)（0x10000000的1為禁止狀態(tài)）

}

void write_cmd(uc cmd)//命令函數(shù)

{

read_busy();//執(zhí)行上個語言，判斷忙不忙

RS=0;

RW=0;

P0=cmd;

E=1;

E=0;

}

void write_dat(uc dat)//寫命令

{

read_busy();

RS=1;

RW=0;

P0=dat;

E=1;

E=0;

}

void main()

{

write_cmd(0x38);//顯示模式

write_cmd(0x0f);//開顯示，顯示光標，并閃爍

write_cmd(0x06);//指針加一，光標加一

write_cmd(0x01);//清0

write_cmd(0x80|0x03);//第一行第四個開始

write_dat(0+'0');//輸入的字符

write_dat(0+'1');

write_dat(0+'2');

}