单片机的动手实践篇--51单片机玩转12864-白红宇

单片机的动手实践篇--51单片机玩转12864

阅读量：5319 次

发布时间：2019-06-14

本文共 6858 字，大约阅读时间需要 22 分钟。

12864液晶的驱动和1602的类似，只不过是多了几个扩展的功能，不如画图功能：

这里讲一下：不要简单的认为12864是y轴64，x为128，那是点阵的分布，不是读写的分布，如正图表示，y轴的32行，从0到31，x轴的16 从0到15,0到7为上半个屏幕，8到15在下半个屏幕，所以绘图的时候，有两个部分要进行书写

在12864上载入任意一幅图：

示例代码：

#include
      
       #define uint unsigned int#define uchar unsigned charsbit lcdrs = P2^4;//数据还是指令的选择端口sbit lcdwr = P2^5;//读写操作端口sbit lcden = P2^6;//使能端延时端口sbit  PSB = P2^1;//串行数据还是并行数据的选择段//图片的编码，这幅图片的编码是一个哆啦a梦  unsigned char code pic1[] = { /* 0X10,0X01,0X00,0X80,0X00,0X40, 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delay1ms(uint x)//延时函数{    uint i,j;    for(i= x;i>0;i--)        for(j=110;j>0;j--);}void write_cmd(uchar cmd)//写指令函数{    lcdrs = 0;    lcdwr = 0;    P0 = cmd;    lcden = 1;    delay1ms(5);//    lcden = 0;}void write_date(uchar date)//写数据函数{    lcdrs = 1;    lcdwr = 0;    P0 = date;    lcden = 1;    delay1ms(5);//    lcden = 0;}void init_12864(){    PSB = 1;//确定是并行传送    write_cmd(0x30);//基本指令操作    write_cmd(0x0c);//开显示，关掉光标    write_cmd(0x01);//清楚lcd的内容}void lcd_putpic(unsigned char code *img)//载入图画的函数{    uint i,j;    //显示上半个屏幕的内容    for(i = 0;i<32;i++)    {        write_cmd(0x80+i);//垂直的地址        write_cmd(0x80);//水平的地址        for(j=0;j<16;j++)        {            write_date(*img);            img++;        }    }    //显示下半个屏幕的内容        for(i = 0;i<32;i++)    {        write_cmd(0x80+i);//垂直的内容        write_cmd(0x88);//水平的地址第三行的内容        for(j=0;j<16;j++)        {            write_date(*img);            img++;        }    }}void setpic()//图像显示模式设置函数{    write_cmd(0x36);//选择8bit的数据流，图像显示模式    delay1ms(5);}main(){    init_12864();//初始化液晶    setpic();//初始化液晶图片显示    lcd_putpic(pic1);//载入一幅图片    delay1ms(5);    while(1);}

View Code

以后载入图片只需要将图片用取模的软件，注意图片的大小必须是128x64的尺寸，否则会出现乱码，这是个比较容易犯的错误，希望大家注意

转载于:https://www.cnblogs.com/fengdashen/p/3358748.html

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