#include

#include "delay.h"

#define IO_12864   _pc //定义12864的数据端口

#define IO_12864_C   _pcc

#define RS_12864  _pd5 //定义命令数据寄存器选择端

#define RW_12864  _pd6 //定义定义读写控制端

#define E_12864   _pd7  //定义使能端

#define RST_12864  _pd4 //定义复位端

//#define CS2   _pd3

//#define CS1   _pd2

void delay_12864(unsigned int ); //延时子函数原型

/*void busychk_12864(void); //忙检测子函数原型*/

void wrtcom_12864(unsigned char); //写命令子函数原型

unsigned char reddat_12864(void); //读数据子函数原型

void wrtdat_12864(unsigned char); //写数据子函数原型

//void choose_12864(unsigned char i);        //选屏

//void drawpic_12864( unsigned char*); //绘图子函数原型

//void drawdot_12864(unsigned char,unsigned char,unsigned char);//画点子函数原型

//void drawrec_12864(unsigned char,unsigned char,unsigned char,unsigned char,unsigned char);  //画矩形子函数原型

void clnGDR_12864(void); //清空GDRAM子函数原型

void inputchars_12864(unsigned char,unsigned char,unsigned char*);//输入短字符串子函数原型

void scroll_12864(unsigned char*); //输入长字符串卷动子函数原型

void initial_12864(void); //12864初始化子函数原型

void main()

{

unsigned char  uctech[] = {"wweerrtt"};

_pcc=0;

_pdc=0;

//_pcpu=0xff;

_pc=0;

_pd=0;

initial_12864();

clnGDR_12864();

inputchars_12864(1,1,uctech);

}

/***********        延时子程序，最大延迟时间为65ms***************/

void delay_12864(unsigned int del){

unsigned int i;

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

}

/***************忙检测，若忙则等待，最长等待时间为60ms**********/

//

//void busychk_12864(void){

//unsigned int timeout = 0;

//IO_12864_C=1;/

//E_12864 = 0;

//RS_12864 = 0;

//RW_12864 = 1;

//E_12864 = 1;

//while((IO_12864 & 0x80) && ++timeout != 0); //忙状态检测，等待超时时间为60ms

//E_12864 = 0;

//}

/****************写命令子程序*********************/

void wrtcom_12864(unsigned char com){

//busychk_12864();

IO_12864_C=0; ///

delay_12864(5000);

E_12864 = 0;

RS_12864 = 0;

RW_12864 = 0;

E_12864 = 1;

IO_12864 = com;

delay_12864(5000); //使能延时50us!!!注意这里，如果是较快的CPU应该延时久一些

E_12864 = 0;

}

/**************************读数据子程序，返回一个字节的数据****************/

unsigned char reddat_12864(void){

unsigned char temp;

//busychk_12864();

delay_12864(5000);/

E_12864 = 0;

IO_12864_C=0;/

IO_12864 = 0xff; //IO口置高电平，读引脚

RS_12864 = 1;

RW_12864 = 1;

E_12864 = 1;

delay_12864(5000); //使能延时50us!!!注意这里，如果是较快的CPU应该延时久一些

IO_12864_C=1;

temp = IO_12864;

return temp;

}

/*****************写数据子程序***********************/

void wrtdat_12864(unsigned char dat){

//busychk_12864();

IO_12864_C=0;//

delay_12864(5000);/

E_12864 = 0;

RS_12864 = 1;

RW_12864 = 0;

E_12864 = 1;

IO_12864 = dat;

delay_12864(5000); //使能延时50us!!!注意这里，如果是较快的CPU应该延时久一些

E_12864 = 0;

}

/***************选屏****************/

//void choose_12864(unsigned char i)//i是要写的屏.0是左屏,1是右屏,2是双屏；

//{                                                                         //此处在硬件上运行时i的电平全部与程序相反；

//  switch (i)                                                 //此版本为仿真版；

//  {

//    case 0: CS1=0;CS2=1;break;        //比如此处如果要在电路上运行则应该改为CS=1；CS2=0；

//    case 1: CS1=1;CS2=0;break;

//        case 2: CS1=0;CS2=0;break;

//        default: break;

//  }

//}

/************显示图片函数，参数时图片的地址，图片必须是128*64像素的逐行逐行的点阵信息。****************/

//void drawpic_12864( unsigned char   *pPicture ){

//unsigned char j, k ;

//wrtcom_12864(0x34);   //在写GDRAM的地址之前一定要打开扩充指令集，否则地址写不进去！！

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

//{

//wrtcom_12864(0x80 + j) ; //写Y 坐标

//wrtcom_12864(0x80) ; //写X 坐标

//for( k = 0 ; k < 16 ; k++ )         //写一整行数据

//{

//wrtdat_12864( *pPicture++ );

//}

//}

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

//{

//wrtcom_12864(0x80 + j) ; //写Y 坐标

//wrtcom_12864(0x88) ; //写X 坐标

//for( k = 0 ; k < 16 ; k++ )         //写一整行数据

//{

//wrtdat_12864( *pPicture++ ) ;

//}

//}

//wrtcom_12864(0x36); //打开绘图显示

//wrtcom_12864(0x30); //返回基本指令集

//}

//

画点函数,左上角为参考点(0，0)

右下角为(127,63)，点坐标形式为(行坐标，列坐标)

参数type用于设置画黑点、白点或取反(黑变白，白变黑)

type = 0为白色，1 为黑色，2为取反

画完点不开启显示，需要自行开启绘图显示

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

//unsigned char X,Y,k; //X存储行地址，Y存储列地址，k存储点在字中的位置(0~15从左至右)

//unsigned char DH,DL;

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

//if(y < 32){ //确定所画点的地址行与列地址

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

//Y = 0x80 + y;

//}else{

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

//Y = 0x80 + (y - 32);

//}

//wrtcom_12864(0x34); //开启扩展指令，关闭绘图显示

//wrtcom_12864(Y); //写行位地址

//wrtcom_12864(X); //写列字地址

//DH = reddat_12864(); //假读

//DH = reddat_12864();   //读高字节

//DL = reddat_12864(); //读低字节

//k = x % 16;

//switch(type){ //判断类型，是黑点还是白点还是取反

//case 0: //画白点

//  if(k < 8){

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

//}else{

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

//}

//break;

//case 1: //画黑点

//if(k < 8){

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

//}else{

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

//}

//break;

//case 2: //对点取反

//if(k < 8){

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

//}else{

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

//}

//break;

//default:

//break;

//}

//wrtcom_12864(Y); //写行位地址

//wrtcom_12864(X);   //写列字地址

//wrtdat_12864(DH); //回写高字节

//wrtdat_12864(DL); //回写低字节

//

//wrtcom_12864(0x36); //开启绘图显示

//wrtcom_12864(0x30); //转回普通指令

//}

//}

//

//                                                        /**********************画矩形子函数，参数为(点1行坐标，点1列坐标，点2行坐标，点2列坐标，*********

//                                                        **********************线条颜色(0为白，1为黑，2对原色取反))*************************************/

//

//

//

//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;

//}

画4条矩形边框

//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内部写满0x00*************/

void clnGDR_12864(void){

unsigned char j,k;

wrtcom_12864(0x34);//在写GDRAM的地址之前一定要打开扩充指令集，否则地址写不进去！！

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

{

wrtcom_12864(0x80 + j) ; //写Y 坐标

wrtcom_12864(0x80) ; //写X 坐标

for( k = 0 ; k < 32 ; k++ ) //写一整行数据

{

wrtdat_12864( 0x00 );

}

}

wrtcom_12864(0x30); //返回基本指令集

}

/***********************写入短字符串函数,参数分别为显示行(0~3)，显示列(0~7)，字符串首地址

字符串只会在一行显示，超过的不显示**********************************/

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

unsigned char i,address=0;

switch (y){ //设置字符显示起始地址

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++);

}

}

}

/******************长字符串显示卷屏函数**************************/

void scroll_12864(unsigned char *ser){

//addr存储地址的中间变量，flag卷屏地址，hang要写数据的行，

//over写完字符串后继续写的空字符计数

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

ptdat = ser; //获得字符串首地址

over = 0; //写入空字符串(写完字符串后)数目初始化为0

wrtcom_12864(0x80); //写第一行字符

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

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x90); //写第二行字符

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

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x88); //写第三行字符

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

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x98); //写第四行字符

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

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

ptdat = ptdat - 32;

wrtcom_12864(0xa0); //写第三行DDRAM,写入内容为第三行字符串和第五行字符串

for(i = 0; i < 16; i++){ //写第三行字符串

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

ptdat = ptdat + 16;

for(i = 0; i < 16; i++){   //写第五行字符串

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

wrtdat_12864(*ptdat++);

}else{

wrtdat_12864(0x20);

over++;

}

}

wrtcom_12864(0x0c); //开显示

if(over > 15){;} //显示字符不足4行，不卷动

else //显示字符大于4行，继续写字符，同时开启卷动

{

hang = 4;

flag = 0x01;

while(1){

switch(hang){   //设置写入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){ //设置要写数据的下一行

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); //打开扩展指令

wrtcom_12864(0x03); //允许输入卷动地址

wrtcom_12864(0x40 + flag++); //设置卷动地址

wrtcom_12864(0x30);         //回到基本指令

wrtcom_12864(addr + i);

delay_12864(20000);

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

wrtdat_12864(*ptdat++);   //连续写入两个字节之高字节

}else{

wrtdat_12864(0x20);

}

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

wrtdat_12864(*ptdat++);   //连续写入两个字节之低字节

}else{

wrtdat_12864(0x20);

}

}

ptdat = ptdat + 16;

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

wrtcom_12864(0x34); //打开扩展指令

wrtcom_12864(0x03); //允许输入卷动地址

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

wrtcom_12864(0x40 + flag); //设置卷动地址

flag++;

wrtcom_12864(0x30); //回到基本指令

wrtcom_12864(addr + i);

delay_12864(20000);

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

wrtdat_12864(*ptdat++);  //连续写入两个字节之高字节

}else{

over++;  //写完最后一行字符，需要再卷动16次才能显示出来。

wrtdat_12864(0x20);

}

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

wrtdat_12864(*ptdat++);    //连续写入两个字节之低字节

}else{

wrtdat_12864(0x20);

}

}

if(over < 8){;}   //最后一行显示完毕则停止卷动

else {break;}

}

}

}

/***********************初始化12864子函数***********************************/

void initial_12864(void){

delay_12864(40000);

RST_12864 = 1;

RST_12864 = 0; //复位

delay_12864(500);

RST_12864 = 1;

wrtcom_12864(0x30); //设置为基本指令集动作

delay_12864(100);

wrtcom_12864(0x30); //设置为基本指令集动作

delay_12864(37);

wrtcom_12864(0x08); //设置显示、光标、闪烁全关。

delay_12864(100);

wrtcom_12864(0x01); //清屏，并且DDRAM数据指针清零

delay_12864(1000);

wrtcom_12864(0x06);   //进入模式设置

wrtcom_12864(0x0c);     //开显示

}