单片机液晶翻页显示的程序

这个简单，你在当前菜单下设置一个下翻的按键，按一下时，重新写入后面的显示内容，也就是将前三行的内容删除掉，重新写入。

if(KEY_NEXT)

{

delate(page1);

write(page2);

}

void delate(unsigned char page)

{

}

void write(unsigned char page)

{

}

这个是1602内部结构决定的，你只需要在初始化的时候先设置三次显示，然后再设置你的其他要求。

芯片厂家推荐的用法：

INT:

MOV

A,#30H

MOV

DATR,#CW_ADD

MOV

R2,#03H

INT1:

MOVX

@DPTR,A

CALL

DELAY

DJNZ

R2,INT1

这上面就是1602对于51单片机推荐的初始化之前加的三次模式设置

#include "reg52h"

sbit LED=P1^0;//LED锁存器

sbit SEG=P1^1;//数码管段选锁存器

sbit DIG=P1^2;//数码管位选锁存器

unsigned char t;

sbit LCDRS=P2^7;//数据指令控制

sbit LCDRW=P2^6;//读写控制

sbit LCDEN=P2^5;//液晶屏使能控制

//延时函数，延时n1ms

void delay(unsigned char n)

{

int i,j;

for (i=0; i<n; i++)

for (j=0; j<100; j++)

;

}

//写命令

void Write_Cmd(unsigned char C)

{

LCDEN=1;//使能端，由高电平跳变成低电平时，液晶屏模块执行命令

LCDRS=0;//指令寄存器选择

P0=C;

delay(5);

LCDEN=0;

}

//写数据

void Write_Data(unsigned char D)

{

LCDEN=1;//使能端，由高电平跳变成低电平时，液晶屏模块执行命令

LCDRS=1;//选择数据寄存器

P0=D;

delay(5);

LCDEN=0;

}

//LCD初始化

void LCD_Init()

{

LCDRS=0;//指令寄存器选择

Write_Cmd(0x01);//清屏

Write_Cmd(0x38);//功能设置8位双行显示57点阵

Write_Cmd(0x0F);//开关显示设置

Write_Cmd(0x06);//输入方式设置，光标从左向右移动，内容不移动

}

void main()

{

unsigned char Code1[]="I LOVE MCU!";

unsigned char m;

//LED，数码管锁存器片选设置

LED=0;

DUAN=0;

WEI=0;

LCDRW=0;//写选择

LCD_Init();

Write_Cmd(0x80+0x01);//写入显示缓冲区起始地址为1行2列

for(m=0;m<11;m++)

{

Write_Data(Code1[m]);

delay(3);

}

while (1)

;

}//end of main

整个液晶的延时还用定时器啊，大哥你太大题小做了吧，延时时间 去看数据手册，现在的液晶有做的很好的，上面各种数据写的清楚的呢，还10ms？，你以为80年代的技术啊，正轨的程序你是要随时 查忙型号的 他俩就是图省事，弄个大延时，不用查忙信号。楼主还是按正轨的走吧。

i_data&=0xf0; // i_data=i_data&0xf0; 高位字节与上1则不变，低四位则被清零 ，因为该12864为串行方式写入，一次需写入8个bit，故采用循环结构比较好 *** 作，建议多看DATASHEET以及C语言相关

应该不是判断忙碌或者不只是判断忙碌，这个语句应该是送了一串命令进去

//HD44780 LCD DRIVER

#include <AT89X52H>

#include <ctypeh>

//LCD Commands

#define LCD_CLS 1 //Clears entire display and sets DDRAM address 0

#define LCD_HOME 2 //Sets DDRAM address 0 in address counter

#define LCD_SETMODE 4 //Sets cursor move direction and specifies display shift

#define LCD_SETVISIBLE 8 //Sets entire display (D) on/off,cursor on/off (C), and blinking of cursor position character (B)

#define LCD_SHIFT 16 //Moves cursor and shifts display without changing DDRAM contents

#define LCD_SETFUNCTION 32 //Sets interface data length (DL), number of display lines (N), and character font (F)

#define LCD_SETCGADDR 64 //Sets CGRAM addressCGRAM data is sent and received after this setting

#define LCD_SETDDADDR 128 //Sets DDRAM address DDRAM data is sent and received after this setting

#define TURE 1

#define FORSE 0

#define TMH 0xf8 //delay timeh 2ms

#define TML 0xCD //delay timel

//------------------------------------------

#define MAX_DISPLAY_CHAR 2

//-----------------------------------------

unsigned char code text[6]="hellow";

static unsigned char data counter,a;

void wcchar(unsigned char d); //write a command char

void wdchar(unsigned char i); //write a data char

char wtbusy(); //wait busy sign

void clrscr(void); //clear screen

void initime0(void); //initial time0

void delay(unsigned char i); //delay

//-------------------------------

unsigned char crc8(unsigned char pData,unsigned char count);

unsigned char pData[]={0x33,0x12,0x34,0x56,0x78,0x33,0x12,0x23,0x45,0x56};

unsigned char data crc;

static char outputbuffer[MAX_DISPLAY_CHAR];

char calc_decascii(char num);

//-------------------------------

void ISR_Timer0(void) interrupt 1

{

TL0=TML;

TH0=TMH;

counter--;

}

void ISR_Int0(void) interrupt 0

{

wdchar(text[a++]); //display "hellow"

if (a>=6)

{a=0;wdchar(' ');}

}

//main program display "hellow"

main(void)

{

unsigned char data k;

initime0();

wcchar(0x38); //initial lcd

wcchar(LCD_SETVISIBLE+6); //set lcd visible

clrscr(); //clear lcd

while(1)

{

crc8(&pData,10);

calc_decascii(crc);

wdchar (outputbuffer[1]);

wdchar (outputbuffer[2]);

wdchar (' ');

for(k=0;k<=6;k++)

{

// wdchar(text[k]); //display "hellow"

P1_2=0;

delay(55); //delay

P1_2=1;

delay(55); //delay

}

}

}

//sub function || display a char

void wdchar(unsigned char i) //write a char

{

unsigned char xdata j;

P1_0=1;

P1_1=0;

j=0x8000;

j=i;

while (wtbusy())

{}

}

void wcchar(unsigned char d) //write a command char

{

unsigned char xdata j;

P1_0=0;

P1_1=0;

j=0x8000;

j=d;

while (wtbusy())

{}

}

char wtbusy() //wait busy sign

{

unsigned char xdata j;

P1_0=0;

P1_1=1;

j=0x8000;

if(j&0x80)

{

return TURE;

}

else

{

return FORSE;

}

}

//clear screen

void clrscr()

{

wcchar(LCD_CLS);

}

//initial time0

void initime0()

{

TL0=TML;

TH0=TMH;

TR0=TURE;

IE=0x93; //Enable T0 and Serial Port

}

//sub function time delay

void delay(unsigned char i)

{

counter=i;

while (counter)

{}

}

unsigned char crc8(unsigned char pData,unsigned char count)

{

// unsigned char crc;

crc = 0;

while (count-- > 0)

{

crc ^= pData++;

}

return crc;

}

char calc_decascii(char num)

// A rather messy function to convert a floating

// point number into an ASCII string

{ long data temp = num;

char data arrayptr = &outputbuffer[MAX_DISPLAY_CHAR];

long data divisor = 10;

long data result;

char data remainder,asciival;

int data i;

// If the result of the calculation is zero

// insert a zero in the buffer and finish

if (!temp)

{ arrayptr = 48;

goto done;

}

// Handle Negative Numbers

if (temp < 0)

{ outputbuffer[0] = '-';

temp -= 2temp;

}

for (i=0 ; i < sizeof(outputbuffer) ; i++)

{ remainder = temp % divisor;

result = temp / divisor;

// If we run off the end of the number insert a space into

// the buffer

if ((!remainder) && (!result))

{ arrayptr = ' ';}

// We're in business - store the digit offsetting

// by 48 decimal to account for the ascii value

else

{ asciival = remainder + 48;

arrayptr = asciival;

}

temp /= 10;

// Save a place for a negative sign

if (arrayptr != &outputbuffer[1]) arrayptr--;

}

done: return outputbuffer;

}

程序只是没有逻辑错误和语法错误，但液晶的控制貌似有些问题。给你一段1602的驱动程序做参考。

#define LCD1602_FLAG

#define LCD1602_PORT P1

#include<reg52h>

#include<stddefh>

#include"dtypeh"

sbit lcd1602_rs=P3^7;

sbit lcd1602_e=P3^5;

sbit lcd1602_rw=P3^6;

sbit lcd1602_busy=P1^7;

/

函数名称：lcd1602_CheckBusy()

函数功能：状态查询

/

void lcd1602_CheckBusy()

{

do

{

lcd1602_busy=1;

lcd1602_rs=0;

lcd1602_rw=1;

lcd1602_e=0;

lcd1602_e=1;

}

while(lcd1602_busy);

}

/

函数名称: lcd1602_WriteCmd()

函数功能：写命令

入口参数：命令字

出口参数：无

/

void lcd1602_WriteCmd(const INT8U cmd)

{

lcd1602_CheckBusy();

lcd1602_rs=0;

lcd1602_rw=0;

lcd1602_e=1;

LCD1602_PORT=cmd;

lcd1602_e=0;

}

/

函数名称：lcd1602_WriteData()

函数功能：写数据

入口参数：c--待写数据

出口参数：无

/

void lcd1602_WriteData(const INT8U c)

{

lcd1602_CheckBusy();

lcd1602_rs=1;

lcd1602_rw=0;

lcd1602_e=1;

LCD1602_PORT=c;

lcd1602_e=0;

}

/

函数名称：lcd1602_Init()

函数功能：初始化LCD

入口参数：无

出口参数：无

/

void lcd1602_Init()

{

lcd1602_WriteCmd(0x38); //显示模式为8位2行57点阵

lcd1602_WriteCmd(0x0f); //display enable,flag enable,flash enable,

lcd1602_WriteCmd(0x06); //flag move to right,screen don't move

lcd1602_WriteCmd(0x01); //clear screen

}

/

函数名称：lcd1602_Display()

函数功能： 字符显示

入口参数：ptr--字符或字符串指针

出口参数：无

说 明：用户可通过以下方式来调用：

1）lcd1602_Display("Hello,world!");

2) INT8U 存储类型 txt[]="要显示的字符串";

或者 INT8U 存储类型 txt[]={'t','x','t',,'\0'};

INT8U ptr;

ptr=&txt;

lcd1602_Display(ptr);

或 lcd1602_Display(txt);

或 lcd1602_Display(&txt);

/

void lcd1602_Display(const INT8U ptr)

{

INT8U data i=0;

INT8U data q;

q=ptr;

lcd1602_WriteCmd(0x80);

while(q!=NULL && (q!='\0') && i<16)

{

lcd1602_WriteData(q);

q++;

i++;

}

lcd1602_WriteCmd(0xc0);

while(q!=NULL && (q!='\0') && i>=16 && i<32)

{

lcd1602_WriteData(q);

q++;

i++;

}

}

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