LCD12864

/**********************************
**头文件：LCD12864.H
**文件名: LCD12864.c
**创建人: 动车组
**日期: 2012-6-17
**功能描述: 八位总线驱动液晶12864 具体功能见下面函数声明
**占用资源: 一个IO口，还五个控制位 其中psb rst如果不用可以直接接高电平
***********************************/
#include "LCD12864.h"
/*LCD12864查忙指令*/
void Busy()
{
uchar vaule=0x80;
LCD12864_Port=0xff;
rs=0; //指令
rw=1; //读操作
while(vaule&0x80)
{
en=1;
vaule=LCD12864_Port;
en=0;
}
}
/*向LCD12864写一个字节的数据或者指令*/
void write_12864_byte(bit C_D,uchar date)
{
Busy(); //读忙
rs=C_D; //C_D为1时是写数据 为0时是指令
rw=0;
LCD12864_Port=date;
en=1;
en=0;
}
/*从LCD12864的add地址中读出数据或者指令*/
uchar Read_12864_byte(bit C_D,uchar add)
{
uchar vaule;
write_12864_byte(0,add);
Busy(); //读忙
rs=C_D; //C_D为1时是写数据 为0时是指令
rw=1;
LCD12864_Port=0xff; //数据口设置为输入口
en=1;
vaule=LCD12864_Port;
en=0;
return vaule;
}
/*LCD12864 清屏*/
void LCD12864_Clear()
{
// uchar i;
write_12864_byte(0,0x01); //清屏指令
// for(i=250;i>0;i--); //延时1.6ms
}
/*液晶LCD12864初始化*/
void Init_12864()
{
uchar i;
rst=0;
for(i=250;i>0;i--); //液晶复位延时一下
rst=1;
psb=1; //选择并行数据传输
//********************************************************************************************************
/*以下是基本指令(即RE=0时,)的功能说明 */
write_12864_byte(0,0x01);//0000 0001 清零 将DDRAM填满“20H”(空格)代码,并且设定DDRAM的地址计数器(AC)为00H;
// 更新设置进入设定点将I/D设为1，游标右移AC加1。
write_12864_byte(0,0x02);//0000 001X 设定 DDRAM 的地址寄存器为00H，并且将游标移到开头原点位置；
// 这个指令并不改变DDRAM的内容。
write_12864_byte(0,0x06);//0000 01 I/D S S为0,I/D为1(0)是游变右(左)移 DDRAM地址计数器(AC)加(减)1
// S为1,I/D为1(0)时画面整体左(右)移
write_12864_byte(0,0x0c);//0000 1DCB D=1(0)整体显示开(关),但是不改变DDRAM 内容
// C=1(0)游标开(关), B=1(0)游标位置显示反白开(关)
// write_12864_byte(0,0x14);//0001 S/C R/L XX 这条指令不改变DDRAM的内容
/* S/C R/L 方向 AC的值
L L 游标向左移动 AC=AC-1
L H 游标向右移动 AC=AC+1

H L 显示向左移动，游标跟着移动 AC=AC
H H 显示向右移动，游标跟着移动 AC=AC */
write_12864_byte(0,0x30);//001DL X RE XX
/* DL=1,8位MPU接口；DL=0,4位MPU接口
RE＝1，扩充指令集；RE＝0，基本指令集
同一指令的动作不能同时改变DL和RE，需先改变DL再改变RE才能确保设置正确*/
// write_12864_byte(0,0x30);//01 A5 A4 A3 A2 A1 A0
/*设定CGRAM 地址到地址计数器（AC） ，AC范围为00H～3FH需确认扩充指令中SR＝0
（卷动位置或RAM地址选择）*/
//********************************************************************************************************

/*******************************************************************************************************
/*以下是扩充指令(即RE=1时)详细说明
write_12864_byte(0,0x01);//0000 0001 进入待命模式，执行如何其它指令都可以结束待命模式；
该指令不能改变RAM的内容。
write_12864_byte(0,0x02);//0000 001 SR 当SR=1时,允许输入垂直卷动地址
当SR=0时,允许输入IRAM地址(扩充指令)及允许设定CGRAM地址(基本指令)
write_12864_byte(0,0x04);//0000 01 R1 R0 选择R1R0行反白
write_12864_byte(0,0x04);//0000 1 SL 00 SL＝1(0)，脱离(进入)睡眠模式
write_12864_byte(0,0x30);//001DL X RE G X DL=1,8位MPU接口；DL=0,4位MPU接口
RE＝1,扩充指令集;RE＝0,基本指令集
G＝1,绘图显示开;G＝0,绘图显示关
同一指令的动作不能同时改变RE及DL、G，需先改变DL或G再改变RE才能确保设置正确
write_12864_byte(0,0x40);//01 A5 A4 A3 A2 A1 A0 SR=1,A5～A0为垂直卷动地址；SR=0,A3～A0为IRAM地址
//设定绘图RAM地址,设定先设置垂直位置再设置水平位置(连续写入2字节数据来完成垂直与水平坐标的设置)
write_12864_byte(0,0x80);//1 0 A5 A4 A3 A2 A1 A0 设置垂直位置(以位为单位)
write_12864_byte(0,0x80);//1 0 0 0 A3 A2 A1 A0 设置水平位置(以字节单位)指针可自增
分两屏：低八个字节为上半屏 高八个字节为下半屏
**********************************************************************************************************/
}
/*在1602第hang行第lie列开始显示*s 字符串 */
void LCD12864_str(uchar hang,uchar lie,uchar *s)
{
uchar add,i;
switch (hang)
{
case 1:
add=0x80;break;
case 2:

add=0x90;break;
case 3:
add=0x88;break;
case 4:
add=0x98;break;
default:
return;break;
}
if(lie>16)
return;
write_12864_byte(0,add+((lie+1)/2)-1);//液晶一行中只有八个地址 可是显示字符可以有16个
if((lie%2)==0) //判断是否为偶数列 若是则要先写一个“20H”
write_12864_byte(1,' ');
for(i=1;;i++)
{
write_12864_byte(1,*s++);
if((lie+i>16)||(*s=='\0')) //判断这行是否写满或者字符串结束
break;
}
}
/*在1602第hang行第lie列开始显示*s 汉字*/
void LCD12864_Chian(uchar hang,uchar lie,uchar *s)
{
uchar add,i;
switch (hang)
{
case 1:
add=0x80;break;
case 2:
add=0x90;break;
case 3:
add=0x88;break;
case 4:
add=0x98;break;
default:
return;break;
}
if(lie>8)
return;
write_12864_byte(0,add+lie-1); //选择显示的地址
for(i=1;;i++)
{
write_12864_byte(1,*s++); //一个汉字有两个字节
write_12864_byte(1,*s++);
if((lie+i>8)||(*s=='\0')) //判断这行是否写满或者字符串结束
break;
}
}
/*在12864第hang行第lie列开始显示Uint 数据 */
void LCD12864_Uint(uchar hang,uchar lie,uint zs) //123
{
uchar sz[6]={0x20,0x20,0x20,0x20,0x20,'\0'},i;

uint cs=zs;
for(;;i++)
{
if(cs/10==0)
break;
cs=cs/10;
}
for(;;i--)
{
sz[i]=zs%10+0x30;
if(zs/10==0)
break;
zs=zs/10;
}
LCD12864_str( hang,lie,sz);
}
/*在12864第hang行第lie列开始显示long 数据 */
void LCD12864_Long(uchar hang,uchar lie,long dws)
{
long cs=dws;

uchar sz1[11]={0x20,0x20,0x20,0x20,0x20,0x20,\
0x20,0x20,0x20,0x20,'\0'},i;

for(;;i++)
{
if(cs/10==0)
break;
cs=cs/10;
}
// sz1[i+1]='\0';
for(;i>=0;i--)
{
sz1[i]=dws%10+0x30;
if(dws/10==0)
break;
dws=dws/10;
}
LCD12864_str( hang,lie,sz1);

}
/*在12864第hang行第lie列开始显示Float 数据 */
void LCD12864_Float(uchar hang,uchar lie,float ft) //123
{
uchar sz[12],i=0;
long dd,ff;
if(ft<1.0)
{
sz[0]='0';
sz[1]='.';
dd=(long)(ft*1000);
sz[2]=dd/100+0x30;
sz[3]=dd%100/10+0x30;
sz[4]=dd%10+0x30;
sz[5]='\0';
}
else //12.678
{
dd=(long)ft;
ff=dd;
for(i=0;;i++)
{
if(dd/10==0)
break;
dd=dd/10;
}
sz[i+1]='.';
dd=(long)(ft*1000)%1000;
sz[i+2]=dd/100+0x30;
sz[i+3]=dd%100/10+0x30;
sz[i+4]=dd%10+0x30;
sz[i+5]='\0';
for(;;i--)
{
sz[i]=ff%10+0x30;
if(ff/10==0)
break;
ff=ff/10;
}
}
LCD12864_str( hang,lie,sz);
}

/*画图128*64的*/
void LCD_12864_P(uchar *a) //显示图片函数 (a的长度一定要大于64*16)
{
uchar i,j,k,temp;

write_12864_byte(0,0x34);//扩充指令
write_12864_byte(0,0x36);//绘图显示开
for(i=0;i<2;i++)
{
if(i==0) //画上半屏
temp=0;
else
temp=8; //画下半屏
for(j=0;j<32;j++)
{
write_12864_byte(0,(0x80+j)); //设置垂直地址(以位为单位,对应的行号)
write_12864_byte(0,(0x80+temp));//设置水平地址(以字节单位,对应的列号)指针可自增
for(k=0;k<16;k++)
{
write_12864_byte(1,*a++);
}
}
}
write_12864_byte(0,0x30);//基本指令
}
/********************************************************/
/**********************************
**文件名: LCD12864_H
**创建人: 动车组
**日期: 2012-6-17
**功能描述: 八位总线驱动液晶12864 具体功能见下面函数声明
**占用资源: 一个IO口，还五个控制位 其中psb rst如果不用可以直接接高电平
***********************************/
#ifndef __LCD12864_h__
#define __LCD12864_h__

#include
#define uchar unsigned char
#define uint unsigned int

sbit rs=P2^5; // RS 寄存器选择端:H数据;L指令 (CS片选，低有效)
sbit rw=P2^6; // R/W 读写控制端 :H读;L写 (SID串行数据线)
sbit en=P2^7; // E 使能信号 (SCLK串行时钟输入)
sbit psb=P2^4;// 并口/串口选择：H 并口 L串口
sbit rst=P2^2;// 复位信号，低电平有效 如果不用复位直接接高电平
#define LCD12864_Port P0 //数据口

void Init_12864(); //12864初始化
void LCD12864_Clear();/*LCD12864 清屏*/

void write_12864_byte(bit C_D,uchar date);/*向LCD12864写一个字节的数据或者指令*/
extern uchar Read_12864_byte(bit C_D,uchar add);/*从LCD12864的add地址中读出数据或者指令*/
void LCD12864_str(uchar hang,uchar lie,uchar *s);/*在12864第hang行第lie列开始显示*s 字符串*/
/*在1602第hang行第lie列开始显示*s 汉字,若汉字之间要插入字符 字符个数必须的偶数个*/
void LCD12864_Chian(uchar hang,uchar lie,uchar *s);
void LCD12864_Chian(uchar hang,uchar lie,uchar *s);/*在1602第hang行第lie列开始显示*s 汉字*/
void LCD12864_Uint(uchar hang,uchar lie,uint zs); /*在1602第hang行第lie列开始显示Uint 数据 */
void LCD12864_Long(uchar hang,uchar lie,long dws); /*在12864第hang行第lie列开始显示long 数据 */
void LCD12864_Float(uchar hang,uchar lie,float ft);/*在12864第hang行第lie列开始显示Float 数据 */
void LCD_12864_P(uchar *a); //显示图片函数128*64

#endif
/*************************************************************/
#include
#include "LCD12864.h"
#define uchar unsigned char
#define uint unsigned int
void delay(uint a)
{
uchar x;
for(;a>0;a--)
for(x=114;x>0;x--);
}
uchar code tab[];
void main()
{
Init_12864();
{
LCD12

864_str(1,3,"We will win");
LCD12864_Chian(2,3,"\xc8\xfd明学院");
LCD12864_Uint(3,5,1314);
LCD12864_Long(3,10,520);
LCD12864_Float(4,5,123.618);
delay(10000);
LCD12864_Clear();
LCD_12864_P(tab);
delay(10000);
LCD12864_Clear();
LCD12864_str(1,3,"We will win");
}while(1);
}
/*-- 调入了一幅图像：C:\Users\Administrator\Desktop\BIQ.bmp --*/
/*-- 宽度x高度=128x64 --*/
uchar code tab[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x01,0xFD,0xF0,0x1F,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x01,0xFC,0xE1,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x03,0xFC,0x0A,0xFF,0x80,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x07,0xFC,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x0F,0xEC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x1F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x3F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x7F,0x98,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x01,0xFF,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x07,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x0D,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x37,0xBF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x7D,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xFE,0x3D,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x01,0xBF,0xE9,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x03,0xEF,0xB0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x07,0xFF,0xE1,0x00,0

x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x0F,0xFF,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x1F,0xFF,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x3F,0xBF,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x31,0xFB,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x7F,0xDE,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xFD,0xEF,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x01,0xFF,0xFB,0xE0,0x00,0x80,0x04,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x01,0xFF,0xDF,0xE0,0x08,0x00,0x1D,0x90,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x03,0xFF,0xEF,0xF0,0x1B,0x00,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x0F,0xFF,0x7F,0xC0,0x3E,0x00,0x39,0x12,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x0F,0xEF,0xFF,0xE0,0x3C,0x00,0x3F,0x05,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x1F,0xFD,0xFF,0xE1,0xF8,0x04,0x3F,0xB8,0xC8,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x3F,0xBF,0xFF,0xD4,0xF0,0x1E,0x3A,0x54,0xD8,0x01,0xD0,0x00,0x00,0x00,
0x00,0x00,0x7F,0xFF,0xFF,0xFF,0xE0,0x60,0x1F,0x54,0xF9,0x03,0xB0,0x00,0x00,0x00,
0x00,0x00,0xFF,0xFF,0xE0,0x7F,0xC0,0x00,0x3F,0xF4,0xFD,0x03,0xF4,0x00,0x00,0x00,
0x00,0x00,0xFB,0xFF,0xE0,0x37,0x00,0x00,0x00,0xE4,0x7D,0x03,0xF4,0x00,0x00,0x00,
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0x00,0x03,0xFF,0xFF,0xC1,0xF8,0x00,0x00,0x00,0x40,0xFF,0xE3,0xFD,0x60,0x00,0x00,
0x00,0x03,0xFF,0xFF,0x03,0x60,0x00,0x00,0x00,0x00,0x7F,0xE3,0xFF,0x40,0x00,0x00,
0x00,0x07,0xFF,0xFF,0xB4,0x84,0xC0,0x00,0x00,0x01,0x3F,0xE3,0xFF,0xE0,0x00,0x00,
0x00,0x07,0xFF,0xFF,0x90,0x05,0xC0,0x00,0x00,0x08,0xBF,0xC1,0xF7,0xC0,0x00,0x00,
0x00,0x0F,0xFB,0xEF,0xE4,0x04,0x20,0x00,0x00,0x01,0x3F,0xC1,0xFF,0x40,0x00,0x00,
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0x00,0x1B,0xF3,0xFF,0xE0,0x00,0x00,0x00,0x00,0x02,0xFF,0x81,0xF7,0x80,0x00,0x00,
0x00,0x37,0x9F,0xFE,0xE4,0x00,0x00,0x00,0x00,0x02,0xFF,0x01,0xFF,0x80,0x00,0x00,
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