12864中文字庫(kù)液晶基本操作函數(shù)庫(kù)

module_12864.h

#include

#define IO_12864 P0 //定義12864的數(shù)據(jù)端口

sbit RS_12864 = P2^5; //定義命令數(shù)據(jù)寄存器選擇端

sbit RW_12864 = P2^6; //定義定義讀(dú)寫(xiě)控制端

sbit E_12864 = P2^7; //定義(yì)使能端

sbit RST_12864 = P2^2; //定義(yì)複(fù)位端

void delay_12864(unsigned int ); //延時(shí)子函數(shù)原型

void busychk_12864(void); //忙檢(jiǎn)測(cè)子函數原型

void wrtcom_12864(unsigned char); //寫(xiě)命令子函數(shù)原型

unsigned char reddat_12864(void); //讀(dú)數據(jù)子函數原型

void wrtdat_12864(unsigned char); //寫數(shù)據(jù)子函數(shù)原型

void drawpic_12864( unsigned char*); //繪(huì)圖子函數(shù)原型

void drawdot_12864(unsigned char,unsigned char,unsigned char);//畫(huà)點(diǎn)子函數原型

//畫矩形子函數原型

void drawrec_12864(unsigned char,unsigned char,

unsigned char,unsigned char,unsigned char);

void clnGDR_12864(void); //清空GDRAM子函數(shù)原型

//輸(shū)入短字符串子函數(shù)原型

void inputchars_12864(unsigned char,unsigned char,unsigned char*);

void scroll_12864(unsigned char*); //輸入長(zhǎng)字符串卷動(dòng)子函數原型

void initial_12864(void); //12864初始化子函數(shù)原型

modlule_12864.c

//*延時子程序，最大延遲(chí)時間(jiān)爲65ms

void delay_12864(unsigned int del){

unsigned int i;

for(i = 0; i < del; i++){;}

}

//*忙檢測(cè)，若忙則等待，最長(zhǎng)等待時間爲60ms

void busychk_12864(void){

unsigned int timeout = 0;

E_12864 = 0;

RS_12864 = 0;

RW_12864 = 1;

E_12864 = 1;

while((IO_12864 & 0x80) && ++timeout != 0); //忙狀态檢測(cè)，等待超時時間(jiān)爲60ms

E_12864 = 0;

}

//寫命令子程序

void wrtcom_12864(unsigned char com){

busychk_12864();

E_12864 = 0;

RS_12864 = 0;

RW_12864 = 0;

IO_12864 = com;

E_12864 = 1;

delay_12864(50); //使能延時50us!!!注意這裏，如果是較(jiào)快的CPU應該(gāi)延時久一些

E_12864 = 0;

}

//讀(dú)數據子程序，返回一個(gè)字節的數據

unsigned char reddat_12864(void){

unsigned char temp;

busychk_12864();

E_12864 = 0;

IO_12864 = 0xff; //IO口置高電(diàn)平，讀(dú)引腳

RS_12864 = 1;

RW_12864 = 1;

E_12864 = 1;

delay_12864(50); //使能延時50us!!!注意這裏，如果是較(jiào)快的CPU應該(gāi)延時久一些

temp = IO_12864;

return temp;

}

//寫數據子程序

void wrtdat_12864(unsigned char dat){

busychk_12864();

E_12864 = 0;

RS_12864 = 1;

RW_12864 = 0;

E_12864 = 1;

IO_12864 = dat;

delay_12864(50); //使能延時50us!!!注意這裏，如果是較(jiào)快的CPU應該(gāi)延時久一些

E_12864 = 0;

}

//顯示圖片函數，參(cān)數時圖片的地址，圖片必須是128*64像素的逐行逐行的點(diǎn)陣信息。

void drawpic_12864( unsigned char *pPicture ){

unsigned char j, k ;

wrtcom_12864(0x34); //在寫GDRAM的地址之前一定要打開(kāi)擴充指令集，否則地址寫不進(jìn)去!!

for( j = 0 ; j < 32 ; j++ )

{

wrtcom_12864(0x80 + j) ; //寫(xiě)Y 坐标

wrtcom_12864(0x80) ; //寫(xiě)X 坐标

for( k = 0 ; k < 16 ; k++ ) //寫一整行數(shù)據(jù)

{

wrtdat_12864( *pPicture++ );

}

}

for( j = 0 ; j < 32 ; j++ )

{

wrtcom_12864(0x80 + j) ; //寫(xiě)Y 坐标

wrtcom_12864(0x88) ; //寫(xiě)X 坐标

for( k = 0 ; k < 16 ; k++ ) //寫一整行數(shù)據(jù)

{

wrtdat_12864( *pPicture++ ) ;

}

}

wrtcom_12864(0x36); //打開(kāi)繪(huì)圖顯示

wrtcom_12864(0x30); //返回基本指令集

}

//畫點(diǎn)函數,左上角爲參(cān)考點(diǎn)(0，0)

//右下角爲(wèi)(127,63)，點(diǎn)坐标形式爲(wèi)(行坐标，列坐标)

//參數type用於(yú)設置畫黑點、白點或取反(黑變(biàn)白，白變(biàn)黑)

//type = 0爲(wèi)白色，1 爲(wèi)黑色，2爲(wèi)取反

//畫(huà)完點(diǎn)不開啓顯示，需要自行開啓繪圖顯示

void drawdot_12864(unsigned char y,unsigned char x,unsigned char type){

unsigned char X,Y,k; //X存儲(chǔ)行地址，Y存儲(chǔ)列地址，k存儲(chǔ)點在字中的位置(0~15從(cóng)左至右)

unsigned char DH,DL;

if(y >= 0 && y <= 63 && x >= 0 && x <= 127) {

if(y < 32){ //確(què)定所畫點(diǎn)的地址行與列地址

X = 0x80 + (x >> 4);

Y = 0x80 + y;

}else{

X = 0x88 + (x >> 4);

Y = 0x80 + (y - 32);

}

wrtcom_12864(0x34); //開啓擴展指令，關(guān)閉(bì)繪圖顯示

wrtcom_12864(Y); //寫(xiě)行位地址

wrtcom_12864(X); //寫(xiě)列字地址

DH = reddat_12864(); //假讀(dú)

DH = reddat_12864(); //讀(dú)高字節(jié)

DL = reddat_12864(); //讀(dú)低字節(jié)

k = x % 16;

switch(type){ //判斷(duàn)類型，是黑點(diǎn)還是白點(diǎn)還是取反

case 0: //畫(huà)白點(diǎn)

if(k < 8){

DH &= ~(0x01 << (7 - k));

}else{

DL &= ~(0x01 << (7 - (k % 8)));

}

break;

case 1: //畫(huà)黑點(diǎn)

if(k < 8){

DH |= (0x01 << (7 - k));

}else{

DL |= (0x01 << (7 - (k % 8)));

}

break;

case 2: //對(duì)點(diǎn)取反

if(k < 8){

DH ^= (0x01 << (7 - k));

}else{

DL ^= (0x01 << (7 - (k % 8)));

}

break;

default:

break;

}

wrtcom_12864(Y); //寫(xiě)行位地址

wrtcom_12864(X); //寫(xiě)列字地址

wrtdat_12864(DH); //回寫(xiě)高字節(jié)

wrtdat_12864(DL); //回寫(xiě)低字節(jié)

wrtcom_12864(0x36); //開(kāi)啓繪(huì)圖顯示

wrtcom_12864(0x30); //轉(zhuǎn)回普通指令

}

}

//畫矩形子函數，參(cān)數爲(點(diǎn)1行坐标，點(diǎn)1列坐标，點(diǎn)2行坐标，點(diǎn)2列坐标，

//線條(tiáo)顔色(0爲白，1爲黑，2對(duì)原色取反))

void drawrec_12864(unsigned char y1,unsigned char x1,unsigned char y2,unsigned char x2,unsigned char type){

unsigned char largex,largey,smallx,smally;

unsigned char i;

if(x1 > x2){

largex = x1;

smallx = x2;

}else{

largex = x2;

smallx = x1;

}

if(y1 > y2){

largey = y1;

smally = y2;

}else{

largey = y2;

smally = y1;

}

//畫4條矩形邊框

for(i = smallx; i < largex; i++){

drawdot_12864(largey,i,type);

}

for(i = largey; i > smally; i--){

drawdot_12864(i,largex,type);

}

for(i = largex; i > smallx; i--){

drawdot_12864(smally,i,type);

}

for(i = smally; i < largey; i++){

drawdot_12864(i,smallx,type);

}

wrtcom_12864(0x30); //返回普通指令

}

//清空GDRAM，往GDRAM内部寫(xiě)滿(mǎn)0x00

void clnGDR_12864(void){

unsigned char j,k;

wrtcom_12864(0x34);//在寫GDRAM的地址之前一定要打開(kāi)擴充指令集，否則地址寫不進(jìn)去!!

for( j = 0 ; j < 32 ; j++ )

{

wrtcom_12864(0x80 + j) ; //寫(xiě)Y 坐标

wrtcom_12864(0x80) ; //寫(xiě)X 坐标

for( k = 0 ; k < 32 ; k++ ) //寫一整行數(shù)據(jù)

{

wrtdat_12864( 0x00 );

}

}

wrtcom_12864(0x30); //返回基本指令集

}

//寫入短字符串函數(shù),參(cān)數(shù)分别爲顯示行(0~3)，顯示列(0~7)，字符串首地址

//字符串隻會(huì)在一行顯示，超過(guò)的不顯示

void inputchars_12864(unsigned char y,unsigned char x,unsigned char *dataaddr){

unsigned char i,address;

switch (y){ //設(shè)置字符顯(xiǎn)示起始地址

case 0: address = 0x80 + x;

break;

case 1: address = 0x90 + x;

break;

case 2: address = 0x88 + x;

break;

case 3: address = 0x98 + x;

break;

default: break;

}

wrtcom_12864(0x30);

wrtcom_12864(address);

for(i = x;i < 8; i++){

if(*dataaddr != '\0'){

wrtdat_12864(*dataaddr++);

}

}

}

//長字符串顯示卷屏函數

void scroll_12864(unsigned char *ser){

//addr存儲(chǔ)地址的中間變(biàn)量，flag卷屏地址，hang要寫數據的行，

//over寫完字符串後(hòu)繼續寫的空字符計(jì)數

unsigned char i,addr,flag,hang,over,*ptdat;

ptdat = ser; //獲(huò)得字符串首地址

over = 0; //寫入空字符串(寫完字符串後(hòu))數(shù)目初始化爲0

wrtcom_12864(0x80); //寫(xiě)第一行字符

for(i = 0; i < 16; i++){

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x90); //寫(xiě)第二行字符

for(i = 0; i < 16; i++){

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x88); //寫(xiě)第三行字符

for(i = 0; i < 16; i++){

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x98); //寫(xiě)第四行字符

for(i = 0; i < 16; i++){

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

ptdat = ptdat - 32;

wrtcom_12864(0xa0); //寫(xiě)第三行DDRAM,寫(xiě)入内容爲(wèi)第三行字符串和第五行字符串

for(i = 0; i < 16; i++){ //寫(xiě)第三行字符串

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

ptdat = ptdat + 16;

for(i = 0; i < 16; i++){ //寫(xiě)第五行字符串

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x0c); //開(kāi)顯(xiǎn)示

if(over > 15){;} //顯(xiǎn)示字符不足4行，不卷動(dòng)

else //顯示字符大於(yú)4行，繼續寫字符，同時開啓卷動(dòng)

{

hang = 4;

flag = 0x01;

while(1){

switch(hang){ //設(shè)置寫(xiě)入DDRAM的地址

case 1: addr = 0x80; break;

case 2: addr = 0x90; break;

case 3: addr = 0xa0; break;

case 4: addr = 0xb0; break;

}

switch(hang){ //設(shè)置要寫數據(jù)的下一行

case 1: hang = 2; break;

case 2: hang = 3; break;

case 3: hang = 4; break;

case 4: hang = 1; break;

}

ptdat = ptdat - 32;

for(i = 0; i < 8; i++){

wrtcom_12864(0x34); //打開(kāi)擴(kuò)展指令

wrtcom_12864(0x03); //允許輸(shū)入卷動(dòng)地址

wrtcom_12864(0x40 + flag++); //設(shè)置卷動(dòng)地址

wrtcom_12864(0x30); //回到基本指令

wrtcom_12864(addr + i);

delay_12864(20000);

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++); //連續寫入兩個(gè)字節(jié)之高字節(jié)

}else{

wrtdat_12864(0x20);

}

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++); //連續寫入兩個(gè)字節(jié)之低字節(jié)

}else{

wrtdat_12864(0x20);

}

}

ptdat = ptdat + 16;

for(i = 8; i < 16; i++){

wrtcom_12864(0x34); //打開(kāi)擴(kuò)展指令

wrtcom_12864(0x03); //允許輸(shū)入卷動(dòng)地址

if(flag == 64){flag = 0;}

wrtcom_12864(0x40 + flag); //設(shè)置卷動(dòng)地址

flag++;

wrtcom_12864(0x30); //回到基本指令

wrtcom_12864(addr + i);

delay_12864(20000);

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++); //連續寫入兩個(gè)字節(jié)之高字節(jié)

}else{

over++; //寫完最後(hòu)一行字符，需要再卷動(dòng)16次才能顯示出來。

wrtdat_12864(0x20);

}

if(*ptdat != '\0'){

wrtdat_12864(*ptdat++); /連續寫入兩個(gè)字節(jié)之低字節(jié)

}else{

wrtdat_12864(0x20);

}

}

if(over < 8){;} //最後一行顯示完畢(bì)則停止卷動(dòng)

else {break;}

}

}

}

//初始化12864子函數(shù)

void initial_12864(void){

delay_12864(40000);

RST_12864 = 1;

RST_12864 = 0; //複(fù)位

delay_12864(500);

RST_12864 = 1;

wrtcom_12864(0x30); //設(shè)置爲基本指令集動(dòng)作

delay_12864(100);

wrtcom_12864(0x30); //設(shè)置爲基本指令集動(dòng)作

delay_12864(37);

wrtcom_12864(0x08); //設置顯示、光标、閃(shǎn)爍全關(guān)。

delay_12864(100);

wrtcom_12864(0x01); //清屏，並(bìng)且DDRAM數據(jù)指針清零

delay_12864(100000);

wrtcom_12864(0x06); //進(jìn)入模式設(shè)置

wrtcom_12864(0x0c); //開(kāi)顯(xiǎn)示

}

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