该代码是基于51单片机的LCD320240显示屏控制程序，主要用于通过MAX6675温度传感器采集温度数据并在LCD上显示。程序包含LCD初始化、温度数据读取与处理、字符和汉字显示等功能模块。通过间接接口RA8835控制器实现ASCII码和中文的显示，并利用双向数据缓冲器XS245进行数据传输。主程序循环读取温度值，分离千百十个位数据，并通过特定函数在LCD上动态显示温度和状态信息。
//disp_character(20,16,2此处16点阵为2 24点阵为3,16,8,6,tab);
//2X8=16 3X8=24 0000 0000 八位为一显示单元
//LCD320240间接接口 RA8835控制器ASCII码和中文显示程序
//XS245g xs245d为显示双向数据传送缓冲器控制信号
//sr245g a573qc b573qc为并联在数据端口P2的屏蔽信号
//源程序2012年6月22日11:00
//L440 读取MAX6675 程序 分离千百十个位数据 还需调整显示温度
#include <reg52.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <intrins.h>
#define data_ora P2
#define uchar unsigned char
#define uint unsigned int
uchar taby4;
uchar tabx4;
uchar maxq,maxb,maxs,maxg;
uint x4,y4;
int dat0;
uint a=0,r;
sbit wr =P0^4;
sbit rd =P0^3;
sbit cs =P0^2;
sbit a0 =P0^1;
sbit rst=P0^0;
sbit sr245g =P0^7;
sbit xs245g =P0^6;
sbit xs245d =P0^5;
sbit a573qc =P3^4;
sbit b573qc =P3^7;
sbit SO=P1^0;//;;;;6675的7脚
// sbit CS=P1^1;//;;;;6675的6脚
sbit SCK=P1^2;//;;;;6675的5脚
//触摸屏引脚定义
sbit DCLK=P3^0;
sbit busy=P2^6;
sbit CE=P3^5; //临时定义
sbit ip=P3^2; //接外部中断0
sbit DIN=P3^3;
sbit DOUT=P3^1;
uchar code systab8={0x30,0x87,0x0f,0x27,0x3a,0xef,0x28,0x00};
int code xsadd10={0,32,64,96,128,160,192,224,256,288};
//整型变量 两个字节
//显示地址ascii查表 0显示0起始位置 1在0位置加32字节 10个数字共计320个字节
//显示地址ascii查表 0显示0起始位置 1在0位置加32字节 10个数字共计320个字节
uchar code scrtab10={0x00,0x00,0xf0,0xb0,0x04,0xf0,0x30,0x2a,0xb0,0x4f};
uchar code ascii\[\]={
//'0', 17
0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x00,0x36,0x00,0x63,0x00,0x63,0x00,0x63,0x00,
0x63,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x36,0x00,0x1C,0x00,0x00,0x00,0x00,0x00,
//'1', 18
0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x78,0x00,0x18,0x00,0x18,0x00,0x18,0x00,
0x18,0x00,0x18,0x00,0x18,0x00,0x18,0x00,0x18,0x00,0x7E,0x00,0x00,0x00,0x00,0x00,
//'2',19
0x00,0x00,0x00,0x00,0x00,0x00,0x3E,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x06,0x00,
0x06,0x00,0x0C,0x00,0x18,0x00,0x30,0x00,0x63,0x00,0x7F,0x00,0x00,0x00,0x00,0x00,
//'3', 20
0x00,0x00,0x00,0x00,0x00,0x00,0x3E,0x00,0x63,0x00,0x63,0x00,0x06,0x00,0x1C,0x00,
0x06,0x00,0x03,0x00,0x03,0x00,0x63,0x00,0x66,0x00,0x3C,0x00,0x00,0x00,0x00,0x00,
//'4', 21
0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x0E,0x00,0x1E,0x00,0x36,0x00,0x36,0x00,
0x66,0x00,0x66,0x00,0x7F,0x00,0x06,0x00,0x06,0x00,0x1F,0x00,0x00,0x00,0x00,0x00,
//'5', 17
0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x00,0x60,0x00,0x60,0x00,0x60,0x00,0x7C,0x00,
0x76,0x00,0x03,0x00,0x03,0x00,0x63,0x00,0x66,0x00,0x3C,0x00,0x00,0x00,0x00,0x00,
//'6', 18
0x00,0x00,0x00,0x00,0x00,0x00,0x1E,0x00,0x36,0x00,0x60,0x00,0x60,0x00,0x7C,0x00,
0x76,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x36,0x00,0x1C,0x00,0x00,0x00,0x00,0x00,
//'7',19
0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x00,0x66,0x00,0x66,0x00,0x0C,0x00,0x0C,0x00,
0x18,0x00,0x18,0x00,0x18,0x00,0x18,0x00,0x18,0x00,0x18,0x00,0x00,0x00,0x00,0x00,
//'8', 20
0x00,0x00,0x00,0x00,0x00,0x00,0x3E,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x36,0x00,
0x1C,0x00,0x36,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x3E,0x00,0x00,0x00,0x00,0x00,
//'9', 21
0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x00,0x36,0x00,0x63,0x00,0x63,0x00,0x63,0x00,
0x37,0x00,0x1F,0x00,0x03,0x00,0x03,0x00,0x36,0x00,0x3C,0x00,0x00,0x00,0x00,0x00,
};
uchar code tab0\[\]={
//"状",
0x10,0xA0,0x10,0x90,0x10,0x98,0x90,0x88,0x50,0x80,0x5F,0xFE,0x10,0xA0,0x10,0xA0,
0x31,0x20,0x51,0x20,0x91,0x10,0x12,0x10,0x12,0x08,0x14,0x0E,0x18,0x04,0x10,0x00,
//"态",
0x01,0x00,0x01,0x00,0x7F,0xFC,0x01,0x00,0x02,0x80,0x02,0x40,0x05,0x20,0x08,0x98,
0x30,0x06,0x01,0x00,0x04,0x88,0x24,0x84,0x24,0x12,0x64,0x12,0x43,0xF0,0x00,0x00,
//"监",
0x04,0x80,0x24,0xC0,0x24,0x80,0x24,0xFE,0x25,0x40,0x26,0x20,0x24,0x30,0x04,0x10,
0x00,0x00,0x3F,0xF8,0x24,0x88,0x24,0x88,0x24,0x88,0x24,0x88,0xFF,0xFE,0x00,0x00,
//"视",
0x20,0x00,0x19,0xFC,0x11,0x04,0xFD,0x24,0x05,0x24,0x09,0x24,0x11,0x24,0x29,0x24,
0x55,0x24,0x96,0x54,0x14,0x50,0x10,0x90,0x10,0x92,0x11,0x12,0x12,0x0E,0x14,0x00,
};
uchar code tab\[\]={
//'A', 34
0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x18,0x00,0x1C,0x00,0x3C,0x00,0x3C,0x00,
0x36,0x00,0x3E,0x00,0x66,0x00,0x63,0x00,0x63,0x00,0xF7,0x80,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
//'B', 35
0x00,0x00,0x00,0x00,0x00,0x00,0xFC,0x00,0x66,0x00,0x66,0x00,0x66,0x00,0x7C,0x00,
0x66,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x66,0x00,0xFC,0x00,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
//'C', 36
0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x00,0x63,0x00,0x63,0x00,0xC0,0x00,0xC0,0x00,
0xC0,0x00,0xC0,0x00,0xC0,0x00,0x63,0x00,0x66,0x00,0x3C,0x00,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
//'D', 37
0x00,0x00,0x00,0x00,0x00,0x00,0xFC,0x00,0x66,0x00,0x63,0x00,0x63,0x00,0x63,0x00,
0x63,0x00,0x63,0x00,0x63,0x00,0x63,0x00,0x66,0x00,0xFC,0x00,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
//'E', 38
0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x63,0x00,0x6C,0x00,0x6C,0x00,0x7C,0x00,
0x6C,0x00,0x6C,0x00,0x60,0x00,0x63,0x00,0x63,0x00,0xFE,0x00,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
//'F', 39
0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x63,0x00,0x6C,0x00,0x6C,0x00,0x7C,0x00,
0x6C,0x00,0x6C,0x00,0x60,0x00,0x60,0x00,0x60,0x00,0xF0,0x00,0x00,0x00,0x00,0x00,
//"点",
0x01,0x00,0x01,0x00,0x01,0xF8,0x01,0x00,0x01,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,
0x10,0x10,0x1F,0xF0,0x10,0x10,0x01,0x10,0x28,0x88,0x24,0x44,0x44,0x44,0x00,0x00,
//"温",
0x40,0x00,0x27,0xF0,0x24,0x10,0x07,0xF0,0x94,0x10,0x54,0x10,0x17,0xF0,0x20,0x00,
0x2F,0xFC,0xC9,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x49,0x24,0x5F,0xFE,0x40,0x00,
//"度",
0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x2F,0xFC,0x22,0x20,0x23,0xE0,
0x20,0x00,0x27,0xF8,0x22,0x10,0x21,0x20,0x20,0xC0,0x41,0x30,0x46,0x0E,0x98,0x04,
};
/*---------------延时子程序----------------*/
void delay (uint us)
{
while(us--);
}
void delay1 (uint ms)
{
uint i,j;
for(i=0;i<ms;i++)
for(j=0;j<1000;j++)
;
}
//读取MAX6675*********************************/
void Read_6675()
{
uint i;
int dat_temp0;
i=0;
dat_temp0=0;
// CS=0;
delay(300);
SCK=0;
delay(300);
for(i=0;i<16;i++)
{
SCK=1;
dat_temp0=dat_temp0<<1;
if(SO==1) dat_temp0=dat_temp0|0x01;
SCK=0;
delay(300);
}
// CS=1;
dat_temp0=dat_temp0<<1;
dat_temp0=dat_temp0>>4;
dat_temp0=dat_temp0/4;
dat0=dat_temp0;
}
/****************************************/
/**********分离 千 百 十 个 位数据********/
void Displaypro(void) //温度显示
{
maxq=dat0/1000;
maxb=(dat0%1000)/100;//温度最高位
maxs=(dat0%100)/10;
maxg=dat0%10;
}
/****************************************/
void chk_busy (void) //忙检测
{
sr245g=1;
a573qc=1;
b573qc=1;
xs245g=0; //数据A>B
xs245d=1; //数据A>B//G=L D=H
P2=0xff;
a0=0;
wr=1;
rd=0;
while(busy==1);
rd=1;
}
/****************************************/
void wr_comm (uchar comm) //写命令
{
chk_busy();
sr245g=1;
a573qc=1;
b573qc=1;
xs245g=0; //数据B>A
xs245d=0; //G=L D=L
a0=1;
rd=1;
data_ora=comm;
wr=0;
wr=1;
}
/****************************************/
void wr_data (uchar dat) //写数据
{
chk_busy ();
sr245g=1;
a573qc=1;
b573qc=1;
xs245g=0; //数据B>A
xs245d=0; //G=L D=L
a0=0;
rd=1;
data_ora=dat;
wr=0;
// delay(2);
wr=1;
}
//=============================================
void wr_xd (uint dat) //写一个16 进制数据
{
uchar datl,dath;
datl=dat;
dath=dat>>8;
wr_data (datl); //送低八位
wr_data (dath); //送高八位
}
//..........显示中文...显示一行状态监视............
void disp_character(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,uchar code *chn)
// 15 16 2 16 1 4
{ // x方向 15起始位置 16字体 2字节 16字体 1行 4字
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//8行
for(j=0;j<y2;j++)//6列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//字节
{
wr_comm(0x46);//显示光标地址
wr_xd(560+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*chn);
++chn;
}
}
//..........显示中文...............
void disp_character1(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,uchar code *chn)
// 2起始位置 16字体 2字节 16字体 6行 4字
{ //在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//8行
for(j=0;j<y2;j++)//6列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//2 字节
{
wr_comm(0x46);//显示光标地址
wr_xd(1200+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*chn);
++chn;
}
}
//..........显示中文...............
void disp_character2(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,int mm,uchar code *chn)
// 2起始位置 16字体 2字节 16字体 1行 4字 96显示的阿拉伯数字地址
{ //在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字 每32字节一个数字 96则从3显示
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//1行
for(j=0;j<y2;j++)//4列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//2 字节
{
wr_comm(0x46);//显示光标地址
wr_xd(1210+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*(chn+mm));
++chn;
}
}
//..........显示中文...............
void disp_character3(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,int mm,uchar code *chn)
// 2起始位置 16字体 2字节 16字体 1行 4字 96显示的阿拉伯数字地址
{ //在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字 每32字节一个数字 96则从3显示
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//1行
for(j=0;j<y2;j++)//4列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//2 字节
{
wr_comm(0x46);//显示光标地址
wr_xd(1212+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*(chn+mm));
++chn;
}
}
//..........显示中文...............
void disp_character4(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,int mm,uchar code *chn)
// 2起始位置 16字体 2字节 16字体 1行 4字 96显示的阿拉伯数字地址
{ //在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字 每32字节一个数字 96则从3显示
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//1行
for(j=0;j<y2;j++)//4列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//2 字节
{
wr_comm(0x46);//显示光标地址
wr_xd(1214+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*(chn+mm));
++chn;
}
}
//..........显示中文...............
void disp_character5(uchar x,uchar y,uchar x1,uchar y1,uchar x2,uchar y2,int mm,uchar code *chn)
// 2起始位置 16字体 2字节 16字体 1行 4字 96显示的阿拉伯数字地址
{ //在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字 每32字节一个数字 96则从3显示
uchar i,j,k,l; //x 为字节数,y 为点行数
for(i=0;i<x2;i++)//1行
for(j=0;j<y2;j++)//4列
for(k=0;k<y1;k++)//16行
for(l=0;l<x1;l++)//2 字节
{
wr_comm(0x46);//显示光标地址
wr_xd(1216+x+40*y+l+k*40+j*x1+i*y1*40);//写一个16 进制数据
wr_comm(0x42);
wr_data(*(chn+mm));
++chn;
}
}
//.......清屏............
void lcd_clear(void)
{
uint i,j;
wr_comm(0x46); //显示光标地址
//wr_xd(0x0000);
wr_data(0x00);
wr_data(0x00);
wr_comm(0x42); //数据写入设置
for(i=0;i<135;i++)
for(j=0;j<80;j++)
wr_data(0x00);
}
//.......初始化...........
void init_lcd (void)
{
uchar i;
rst=1;
cs=0;
wr_comm(0x40); //WRITE SYSTEMSET 指令和参数
for(i=0;i<8;i++)
wr_data(systabi);
wr_comm(0x44); //WRITE SCROLL 指令和参数
for(i=0;i<10;i++)
wr_data(scrtabi);
wr_comm(0x5a); //显示画面水平移动量:00--07 点
wr_data(0x00);
wr_comm(0x5b); //显示属性:DM1(DM2)=0,文本方式;DM1(DM2)=1,图形方式;OV=1,三重合成;OV=0,两重合成
wr_data(0x08);
wr_comm(0x5d);
wr_data(0x07);
wr_data(0x8f);
wr_comm(0x4c); //光标自动移动方向--向右
wr_comm(0x59); //DISP ON
wr_data(0x54);
}
//...............主程序...............
void main()
{
delay(12);
SP=0x5f;
init_lcd();
lcd_clear();
IT0=0;
while(1)
{
P1=0;
disp_character(15,16,2,16,1,4,tab0);//
//在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字
delay1(1000);
disp_character1(1,16,2,16,6,4,tab);//
//在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字
Read_6675();
Displaypro(); //数据处理
disp_character2(1,16,2,16,1,1,maxq,ascii);//
disp_character3(1,16,2,16,1,1,maxb,ascii);//
disp_character4(1,16,2,16,1,1,maxs,ascii);//
disp_character5(1,16,2,16,1,1,maxg,ascii);//
//在x,y 处显示大小x1,y1 的字,显示x2 行,每行y2 个字
P1=254;
delay1(1000);
P1=253;
lcd_clear();
}
}