📄 shiyan.c
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#include <reg51.h>
#include <intrins.h>
#define GDM12864ADataPort P1 //LCD数据线
sbit DI=P2^2; // 数据\指令 选择
sbit RW=P2^1; // 读\写 选择
sbit EN=P2^0; // 读\写使能
sbit cs1=P2^4; // 片选1
sbit cs2=P2^3; // 片选2
unsigned char i,j,t;
/*--------函数列表-------*/
/*----------------------------------------------------------------------------------------------------*/
//状态检查
void CheckState()
{
unsigned char dat;
DI=0;
RW=1;
do{
GDM12864ADataPort=0x00;
EN=1;
dat=GDM12864ADataPort;
EN=0;
dat=0x80 & dat; //仅当第7位为0时才可操作(判别busy信号)
}while(!(dat==0x00));
}
/*-----------------------------------------------------------------------------------------------------*/
//向LCD发送命令
//command :命令
SendCommandToLCD(unsigned char command)
{
CheckState();
RW=0;
GDM12864ADataPort=command;
EN=1; EN=0;
}
/*----------------------------------------------------------------------------------------------------*/
//写显示数据
//dat:显示数据
void WriteByte(unsigned char dat)
{
CheckState();
DI=1; RW=0;
GDM12864ADataPort=dat;
EN=1; EN=0;
}
/*----------------------------------------------------------------------------------------------------*/
//读显示数据
unsigned char ReadByte()
{
unsigned char dat;
CheckState();
DI=1; RW=1;
GDM12864ADataPort=0xff;
EN=1; dat=GDM12864ADataPort; EN=0;
return(dat);
}
/*----------------------------------------------------------------------------------------------------*/
//设定行地址(页)--X 0-7
void SetLine(unsigned char line)
{
line=line & 0x07; // 0<=line<=7
line=line|0xb8; //1011 1xxx
SendCommandToLCD(line);
}
/*----------------------------------------------------------------------------------------------------*/
//设定列地址--Y 0-63
void SetColumn(unsigned char column)
{
column=column &0x3f; // 0=<column<=63
column=column | 0x40; //01xx xxxx
SendCommandToLCD(column);
}
/*----------------------------------------------------------------------------------------------------*/
//设定显示开始行--XX
void SetStartLine(unsigned char startline) //0--63
{
startline=startline & 0x07;
startline=startline|0xc0; //1100 0000
SendCommandToLCD(startline);
}
/*----------------------------------------------------------------------------------------------------*/
//开关显示
void SetOnOff(unsigned char onoff)
{
onoff=0x3e | onoff; //0011 111x
SendCommandToLCD(onoff);
}
/*---------------------------------------------------------------------------------------------------*/
//选择屏幕
//screen: 0-全屏,1-左屏,2-右屏
void SelectScreen(unsigned char screen)
{ //cs1: 1--左; cs2: 1--右
switch(screen)
{ case 0: cs1=0;//全屏
_nop_(); _nop_(); _nop_();
cs2=0;
_nop_(); _nop_(); _nop_();
break;
case 1: cs1=0;//左屏
_nop_(); _nop_(); _nop_();
cs2=1;
_nop_(); _nop_(); _nop_();
break;
case 2: cs1=1;//右屏
_nop_(); _nop_(); _nop_();
cs2=0;
_nop_(); _nop_(); _nop_();
break;
}
}
/*---------------------------------------------------------------------------------------------------*/
//延时
GDM12864delay()
{
unsigned int i=500;
while(i--) {;}
}
/*---------------------------------------------------------------------------------------------------*/
//清屏
//screen: 0-全屏,1-左屏,2-右
void ClearScreen(unsigned char screen)
{ unsigned char i,j;
SelectScreen(screen);
for(i=0;i<8;i++){
SetLine(i);
for(j=0;j<128;j++){
WriteByte(0x00);
}
}
}
/*---------------------------------------------------------------------------------------------------*/
//初始化LCD
void InitLCD()
{ unsigned char i=250; //延时
while(i--);
SelectScreen(0);
SetOnOff(0); //关显示
ClearScreen(0);//清屏
SelectScreen(0);
SetOnOff(1); //开显示
SelectScreen(0);
SetStartLine(0); //开始行:0
}
/*----------------------------------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------------------------*/
unsigned char code ASC[]={
/*.--0x2E */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x0C,0x0C,0x00,0x00,0x00,
/*'/'--0x2F */
0x00,0x00,0x00,0x80,0xC0,0x60,0x30,0x00,
0x0C,0x06,0x03,0x01,0x00,0x00,0x00,0x00,
/*0--0x30 */
0xF8,0xFC,0x04,0xC4,0x24,0xFC,0xF8,0x00,
0x07,0x0F,0x09,0x08,0x08,0x0F,0x07,0x00,
/*1--0x31 */
0x00,0x10,0x18,0xFC,0xFC,0x00,0x00,0x00,
0x00,0x08,0x08,0x0F,0x0F,0x08,0x08,0x00,
/*2--0x32 */
0x08,0x0C,0x84,0xC4,0x64,0x3C,0x18,0x00,
0x0E,0x0F,0x09,0x08,0x08,0x0C,0x0C,0x00,
/*3--0x33 */
0x08,0x0C,0x44,0x44,0x44,0xFC,0xB8,0x00,
0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
/*4--0x34 */
0xC0,0xE0,0xB0,0x98,0xFC,0xFC,0x80,0x00,
0x00,0x00,0x00,0x08,0x0F,0x0F,0x08,0x00,
/*5--0x35 */
0x7C,0x7C,0x44,0x44,0xC4,0xC4,0x84,0x00,
0x04,0x0C,0x08,0x08,0x08,0x0F,0x07,0x00,
/*6--0x36 */
0xF0,0xF8,0x4C,0x44,0x44,0xC0,0x80,0x00,
0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
/*7--0x37 */
0x0C,0x0C,0x04,0x84,0xC4,0x7C,0x3C,0x00,
0x00,0x00,0x0F,0x0F,0x00,0x00,0x00,0x00,
/*8--0x38 */
0xB8,0xFC,0x44,0x44,0x44,0xFC,0xB8,0x00,
0x07,0x0F,0x08,0x08,0x08,0x0F,0x07,0x00,
/*9--0x39 */
0x38,0x7C,0x44,0x44,0x44,0xFC,0xF8,0x00,
0x00,0x08,0x08,0x08,0x0C,0x07,0x03,0x00
};
/*----------------------------------------------------------------------------------------------*/
#define CB6AB 0x0000 /*东 */
#define CC4CF CB6AB+32 /*南 */
unsigned char code Hztable[]={
/*东 CB6AB 0 */
0x00,0x04,0x04,0xC4,0xB4,0x8C,0x87,0x84,
0xF4,0x84,0x84,0x84,0x84,0x04,0x00,0x00,
0x00,0x00,0x20,0x18,0x0E,0x04,0x20,0x40,
0xFF,0x00,0x02,0x04,0x18,0x30,0x00,0x00,
/*南 CC4CF 1 */
0x04,0x04,0xE4,0x24,0x24,0x64,0xB4,0x2F,
0x24,0xA4,0x64,0x24,0x24,0xE6,0x04,0x00,
0x00,0x00,0x7F,0x04,0x05,0x05,0x05,0x7F,
0x05,0x05,0x05,0x25,0x44,0x3F,0x00,0x00,
/*大 2 */
0x20,0x20,0x20,0x20,0x20,0x20,0xA0,0x7F,
0xA0,0x20,0x20,0x20,0x20,0x30,0x20,0x00,
0x00,0x40,0x40,0x20,0x10,0x0C,0x03,0x00,
0x01,0x06,0x08,0x10,0x20,0x60,0x20,0x00,
/*学 3 */
0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,
0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,
0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,
0x06,0x05,0x04,0x04,0x04,0x06,0x04,0x00,
/*信 4 */
0x80,0x40,0x20,0xF8,0x07,0x24,0x24,0x24,
0x25,0x26,0x24,0x24,0xB4,0x26,0x04,0x00,
0x00,0x00,0x00,0xFF,0x00,0x01,0xFD,0x45,
0x45,0x45,0x45,0x45,0xFD,0x01,0x00,0x00,
/*息 5 */
0x00,0x00,0x00,0xFC,0xA4,0xA6,0xA5,0xA4,
0xA4,0xA4,0xA4,0xFE,0x04,0x00,0x00,0x00,
0x40,0x30,0x00,0x77,0x84,0x84,0x8C,0x94,
0xB4,0x84,0x84,0xE7,0x00,0x10,0x60,0x00,
0x24,0x24,0x24,0xA4,0xFE,0xA3,0x22,0x00,
0x24,0x48,0x00,0xFF,0x00,0x80,0x00,0x00,
0x10,0x08,0x06,0x01,0xFF,0x00,0x01,0x02,
0x02,0x02,0x02,0xFF,0x01,0x01,0x01,0x00,
0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,
0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,
0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,
0x06,0x05,0x04,0x04,0x04,0x06,0x04,0x00,
/*工 6 */
0x00,0x04,0x04,0x04,0x04,0x04,0x04,0xFC,
0x04,0x04,0x04,0x04,0x06,0x04,0x00,0x00,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x3F,
0x20,0x20,0x20,0x20,0x20,0x30,0x20,0x00,
/*程 7 */
0x24,0x24,0xA4,0xFE,0xA3,0x22,0x20,0x7E,
0x42,0x42,0x42,0x42,0x42,0x7F,0x02,0x00,
0x08,0x06,0x01,0xFF,0x00,0x43,0x41,0x49,
0x49,0x49,0x7F,0x49,0x4D,0x69,0x41,0x00,
/*学 8 */
0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,
0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,
0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,
0x06,0x05,0x04,0x04,0x04,0x06,0x04,0x00,
/*院 9 */
0x00,0xFE,0x22,0x5A,0x96,0x0C,0x24,0x24,
0x25,0x26,0x24,0x34,0xA4,0x14,0x0C,0x00,
0x00,0xFF,0x04,0x08,0x87,0x81,0x41,0x31,
0x0F,0x01,0x3F,0x41,0x41,0x41,0x70,0x00,
/*张 10 */
0x02,0xE2,0x22,0x22,0x3F,0x82,0x80,0xFF,
0x80,0xA0,0x90,0x88,0x86,0xC0,0x80,0x00,
0x00,0x43,0x82,0x42,0x3E,0x00,0x00,0xFF,
0x40,0x23,0x0C,0x10,0x20,0x60,0x20,0x00,
/*彬 11 */
0x10,0x10,0xD0,0xFF,0x90,0x10,0x10,0xD0,
0xFF,0x90,0x10,0x20,0x10,0x08,0xC6,0x00,
0x04,0x03,0x00,0xFF,0x00,0x04,0x03,0x00,
0xFF,0x00,0x81,0x44,0x22,0x11,0x0C,0x00
};
/*--------------------------------------------------------------------------------------------------*/
//显示8*8点阵
//旋转90度:字模被竖着切分
//lin:行(0-7), column: 列(0-15)
//address : 字模区首地址
void Show88(unsigned char lin,unsigned char column,unsigned int address)
{ unsigned char i;
if(column>16) {return;}
if(column<8) SelectScreen(1); //如果列数<8(0,1,2,3,4,5,6,7)则写在第一屏上
else {
SelectScreen(2); //否则 (8,9,10,11,12,13,14,15)写在第二屏上
column=column & 0x07; //防止越界
}
SetLine(lin);
SetColumn(column<<3);
for(i=0;i<8;i++) WriteByte(ASC[address+i]);
}
void Show88hz(unsigned char lin,unsigned char column,unsigned int address)
{ unsigned char i;
if(column>16) {return;}
if(column<8) SelectScreen(1); //如果列数<8(0,1,2,3,4,5,6,7)则写在第一屏上
else {
SelectScreen(2); //否则 (8,9,10,11,12,13,14,15)写在第二屏上
column=column & 0x07; //防止越界
}
SetLine(lin);
SetColumn(column<<3);
for(i=0;i<8;i++) WriteByte(Hztable[address+i]);
}
/*------------------------------------------------------------------------------------------------*/
//显示8*16字符
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-15)
//character:字符代码(标准ASCII码)
void ShowChar(unsigned char lin,unsigned char column,unsigned char character)
{ lin=lin<<1;//一个字符占两页
Show88(lin ,column, character*16 );
Show88(lin+1,column,character*16+8 );
}
/*----------------------------------------------------------------------------------------------*/
//显示一个汉字
//旋转90度:字模被竖着切分
//lin:行(0-3), column: 列(0-7)
//hzcode: 汉字代码(自定义的)
//uchar code HZtable
void ShowHZ(unsigned char lin,unsigned char column,unsigned int hzcode)
{
lin=lin<<1; //lin*2,一个汉字占两页
Show88hz(lin,column,hzcode*32);
Show88hz(lin,column+1,hzcode*32+8);
Show88hz(lin+1,column,hzcode*32+16);
Show88hz(lin+1,column+1,hzcode*32+24);
}
/*----------------------------------------------------------------------------------------------*/
//演示主程序
void main()
{
GDM12864delay();//等待设备准备
InitLCD();//初始化LCD
SetLine(0);
SetColumn(0);
SetStartLine(0);
for(t=0;t<4;t++){
ShowHZ(0,t<<1,t); //显示 东南大学
}
for(t=4;t<12;t++){
ShowHZ(1,(t-4)<<1,t);//显示 信息科学工程学院
}
for(t=12;t<14;t++){
ShowHZ(2,(t-12)<<1,t);//显示 张彬
}
}
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