128*64液晶显示器-白红宇

128*64液晶显示器

阅读量：5897 次

发布时间：2019-06-19

本文共 11037 字，大约阅读时间需要 36 分钟。

以数据并行的方式在DDRAM中实现基本的文本输出

#include 
     
      #include 
      
       #define NOP() _nop_()#define uchar unsigned char#define uint unsigned int           uchar code table0[] = "welcome zcmaker";uchar code table1[] = "我愿意这条情路";uchar code table2[] = "我会送你红色玫瑰";uchar code table3[] = "未来有你梦才会完美";sbit du = P2^6;sbit we = P2^7;                                                                   sbit LCDRS = P3^5;sbit LCDRW = P3^6;sbit LCDEN = P3^4;sbit LCDPSB = P3^7;void delayNms(uchar ms);void init();void writeCmd(uchar cmd);void writeData(uchar dat);uchar readState();void main(){    uint i = 0;    init();        /*注意点设定 与 游标或显示移位控制的区别：    当设定了点设定的内容时，写入的每一个内容都会     按照这个设定方式移动，而游标或显示移位控制只在    写入一条命令时移动一次    *//*****以下 实现了行屏幕左移动***************//*    writeCmd(0x07);//点设顶，画面左移    writeCmd(0x87);        while(table0[i] != '\0')    {                                                 writeData(table0[i++]);        delayNms(500);    }*//******************************************/             /*********检测DDRAM的地址为0xa0之后能否显示,结果是不能,数据没有存入到DDRAM中*******//*    writeCmd(0x9f);    writeData('1');    delayNms(500);    writeCmd(0x18);*//**************************************************************//**************游标或显示移位设定*****************************/    /*while(table0[i++] != '\0')    {        writeCmd(0x18);        delayNms(500);    }*//*********************************************************/       while(1);}void delayNms(uchar ms){    uchar i;    while(ms--)    {        for(i = 105; i>0; i--)            NOP();    }        }void init(){    we = 0;    du = 0;    LCDPSB = 1;    writeCmd(0x30);//功能设定，基本指令集    delayNms(1);    writeCmd(0x30);//这里为什么又多了个功能设定    delayNms(1);    writeCmd(0x0f);//显示开，游标开，游标位置开    delayNms(1);    writeCmd(0x01);//清频    delayNms(0x015);    writeCmd(0x06);//游标右移 ，整体显示不动}void writeCmd(uchar cmd){    LCDEN = 0;    while((readState() & 0x80) !=0);  //判忙    LCDRS = 0;    LCDRW = 0;    NOP();    LCDEN = 1;    P0 = cmd;    NOP();    NOP();    LCDEN = 0;}void writeData(uchar dat){    LCDEN = 0;    while((readState() & 0x80) !=0);    LCDRS = 1;    LCDRW = 0;    NOP();    LCDEN = 1;    P0 = dat;    NOP();    NOP();    LCDEN = 0;}uchar readState(){    uchar dat;    LCDEN = 0;    LCDRS = 0;    LCDRW = 1;    NOP();    LCDEN = 1;    dat = P0;    NOP();    NOP();    LCDEN = 0;    return dat;}

在液晶上面实现了绘图的功能

#include 
     
      #include 
      
       #define NOP() _nop_()#define uchar unsigned charconst uchar code fill[] = {
   "                "};const uchar code table0[] = {
   "欢迎来到"};const uchar code table1[] = {
   "   zcmaker's lab"};const uchar code table2[] = {
   "谢谢观看"};           const uchar code qq[] = 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,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};sbit du = P2^6;sbit we = P2^7;                                                                   sbit LCDRS = P3^5;sbit LCDRW = P3^6;sbit LCDEN = P3^4;sbit LCDPSB = P3^7;void delayNms(uchar ms);void init();void writeCmd(uchar cmd);void writeData(uchar dat);uchar readState();void funcTest();void clearGDRAM();void drawPic(uchar *dat);void writeChar(uchar loc, uchar *dat);void main(){    init();    writeCmd(0x0c);//光标不显示        writeChar(0x80, table0);    delayNms(500);    writeChar(0x90, table1);    delayNms(500);//    writeCmd(0x01);//清空DDRAM ,这句话导致图片显示的句子不正确，想不到是什么原因/**************一下4句话作为代替，清空DDRAM中的内容********************/    writeChar(0x80, fill);    writeChar(0x88, fill);    writeChar(0x90, fill);    writeChar(0x98, fill);/***********************************************************************/    drawPic(qq);    delayNms(500);    clearGDRAM();    writeChar(0x88, table2);    delayNms(500);    writeCmd(0x01);    /*writeCmd(0x01);    drawPic(qq);    delayNms(500);    delayNms(500);    delayNms(500);    writeCmd(0x01);*/       while(1);}void delayNms(uchar ms){    uchar i;    while(ms--)    {        for(i = 105; i>0; i--)            NOP();    }        }void init(){    we = 0;    du = 0;    LCDPSB = 1;    writeCmd(0x30);//功能设定，基本指令集    delayNms(1);    writeCmd(0x30);//这里为什么又多了个功能设定    delayNms(1);    writeCmd(0x0f);//显示开，游标开，游标位置开    delayNms(1);    writeCmd(0x01);//清频    delayNms(0x015);    writeCmd(0x06);//游标右移 ，整体显示不动}void writeCmd(uchar cmd){    LCDEN = 0;    while((readState() & 0x80) !=0);  //判忙    LCDRS = 0;    LCDRW = 0;    NOP();        LCDEN = 1;    P0 = cmd;    NOP();    NOP();    LCDEN = 0;}void writeData(uchar dat){    LCDEN = 0;    while((readState() & 0x80) !=0);    LCDRS = 1;    LCDRW = 0;    NOP();    LCDEN = 1;    P0 = dat;    NOP();    NOP();    LCDEN = 0;}uchar readState(){    uchar dat;    LCDEN = 0;    LCDRS = 0;    LCDRW = 1;    NOP();    LCDEN = 1;    dat = P0;    NOP();    NOP();    LCDEN = 0;    return dat;}void clearGDRAM(){    uchar i, j, k;    writeCmd(0x34);//进入扩展指令集    就可以对GDRAM中的数据进行设定    k = 0x80;    for(i = 0; i < 32; i++)    {        writeCmd(k++);//注意        writeCmd(0x80);        for(j = 0; j < 16; j++ )        {            writeData(0);            writeData(0);        }    }    writeCmd(0x30);//回到基本指令集}void drawPic(uchar *dat){    uchar i, j;    writeCmd(0x34);//进入扩展指令集    就可以对GDRAM中的数据进行设定    for(i = 0; i < 32; i++)    {        writeCmd(0x80 + i);//注意        writeCmd(0x80);        for(j = 0; j < 8; j++ )        {            writeData(*dat++);            writeData(*dat++);        }    }                                        for( i = 0; i< 32; i++)    {        writeCmd(0x80 + i);        writeCmd(0x88);        for(j = 0; j< 8; j++)        {            writeData(*dat++);            writeData(*dat++);        }    }    writeCmd(0x36);    writeCmd(0x30);//回到基本指令集        }void funcTest(){    writeCmd(0x34);//进入 补充指令集，不开绘图功能//    writeCmd(0x04);//1 3反白//    writeCmd(0x01);//进入待命模式//    writeCmd(0x08);//睡眠模式    }void writeChar(uchar loc, uchar *dat){    uchar i = 0;    writeCmd(loc);    while(dat[i] != '\0')    {                                                 writeData(dat[i++]);          }    }

转载于:https://www.cnblogs.com/zcmaker/archive/2012/11/23/2784512.html

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