STC驱动教程系列——CDC驱动虚拟OLED显示汉字字符

国学芯用

一、前言

        看到STC家最近最新推出了STC32G(PS:STC8H8K64与他功能类似)，看到了全网首发的一个USB-CDC的虚拟串口功能，号称不用USB转TTL的芯片，只需要单片机通过USB连接电脑就可以实现串口通信，甚至在ISP软件上还有虚拟的各种设备可以直接驱动看效果（显示效果如下图），果断联系销售要了一个试试性能。

当然，因为DEMO程序可能有些刚入门的小伙伴不会使用，在这里我特出一期教程帮助大家入门，本教程围绕开天斧主板，最终实现功能如下：（详情见演示视频）

    1.直接驱动和缓存驱动两种驱动方式；

    2.内建汉字字库索引和ascll字符库，能实现汉字和字符的任意显示；

    3.缓存驱动实现画点函数和简易划线函数；

    4.虚拟键盘实现6个OLED页面的功能演示。

二、实现过程        

2.1工程的建立

  因为已知有现成的OLED的驱动函数，所以我们这里直接寻找一个现成的示例代码导入，当然想要从零新建一个工程的可以直接参考STC8H的手册实现，这里为了精简，我就直接从官网下载一个最新的示例代码库了。直接登录官网http://www.STCAI.com/，找到下图中的“开天斧-STC8H-实验板演示程序”下载下来。

解压出来找到历程包里有如下两个文件

随后，我们给他复制到一个新的文件夹，得到一个新的工程,具体如下（有需要的可以给16-STC开头的的那个文件夹改个名字，这里为了演示方便就不修改了），这里前一个文件夹是用户代码，COMM文件夹里是STC的USB相关的驱动库，为了后期方便升级替换，这里就放在了工程目录里

然后打开工程文件夹，开始编译工程。打开“16-STC-ISP调试接口通过USB CDC协议驱动虚拟设备”文加夹，双击“stc_usb_ser.uvproj”即可打开工程，然后开始编译，如下图说明编译成功。

2.2工程下载

  这里选择开天斧作为主控，先按下板子上的P3.2按钮不松开，然后按一下板子上的OFF按钮并松开，此事在松开P3.2按钮，然后打开ISP软件，随后按照下图配置：

2.3工程测试（按照如下图一步一步的设置）

然后分别打开STC调试接口里的“虚拟键盘”和“OLED-128*64”。

具体的功能可以见这个程序的注释，可以直接按下这个键盘上对应的按钮进行操作（例如按下虚拟键盘上的R就会打开显示，Q就会关闭显示）。但是看完了这个程序很多人会好奇，怎么只有一个显示图片的程序呢，我就想给他显示一个字母，我要怎么操作呢，怎么这里连显示一个字母的函数都没有呢？

2.4驱动逻辑分析

  看到“STC调试接口”里的调试接口协议，里面有全部的OLED的驱动函数，可以看到全部的函数如下图所示，仔细分析下来操作屏幕显示的只有一行OLED12864_ShowPicture的函数，所以我们要想在屏幕上显示一个字母，就得首先从这个函数入手。

  可以看到这个有这么一个函数：void OLED12864_ShowPicture(BYTE x, BYTE y, BYTE cx, BYTE cy, BYTE *dat);

  他的入口参数是一个指针，一般都是指向一个数组的首地址，那么显示一个数组的就必须要知道他对应的数组里存放的顺序，我们看到这个SSD1306的手册，重点部分如下截图：

已知默认OLED用的水平寻址模式，参考OLED的手册，可以看到该模式下他将128*64的像素点分成了纵向的128列，横向的8个大行（因为一次写8个bit，这里8个大行*8bit（八个小行）刚好64bit），且每个byte的数据发过去高位在下，低位在上。也就是说整屏幕的刷新广汇能源要显示数据一共是128*8个，每次发送的数据在的位数对应下图。横向8行，竖向128列，写入的1024个字节的数据中，第一个字节在第一行第一列，第128个字节在第一行第127列。

因为上表中单独一行中，每个列都是1个字节的，换成二进制数就是8个位。例如0X01,这是一个16进制数，也是一个字节的数据，写成二进制数就是0000 0001b，可以看到他前面有7个0，末尾有1个1。我们知道1代表点亮，也就是说这一大行的八个小行里，第一个小行的那个位置会被点亮。

  知道了这个驱动逻辑，那我们就可以开始取字模了，首先是写1点亮，这属于阴码格式，以行位单位，每次8个位的写数据，属于列行式，高位在下，低位在上属于逆向。所以取模软件的设置如下。

所以到了这里想玩转这个显示屏就很简单了，想点亮作为为（0,0,）的点，我们只需要通过这个函数void OLED12864_ShowPicture(BYTE x, BYTE y, BYTE cx, BYTE cy, BYTE *dat);，将他的x，y坐标都设置为0就可以指向原点位置，cx和cy都设置为1表示只需要输出一个字节，因为点亮的位置是在最上面，所以参数就是0x01即可。

  一个ascll就是横向写八个字节的数据，在换一行在写8个字节的数据，确定好x和y的地址之后，数据起始的指针指向这个字符对应的数组开始的地方就可以了。

2.5：实际测试（另外，不建议用这个方式，所以这里不细展开讲解了，推荐第三章的方式）

• 
  

国学芯用

2.5：实际测试（另外，不建议用这个方式，所以这里不细展开讲解了，推荐第三章的方式）

OLED.C文件内容如下：

<font size="3">#include "oled.h"

#include <stdio.h>

#include <string.h>

#include "font.h"

/****************************************系统操作****************************************/

void OLED_Init(void)     //OLED初始化

{

    OLED12864_SetContrast(255);       //亮度值（范围0～255）(255);//亮度最大

    OLED12864_ScrollStop(); //停止滚屏

    OLED12864_DisplayOn();             //打开OLED12864的显示

    OLED12864_DisplayContent();        //显示屏幕内容  

    OLED12864_SetAddressMode(0x00);    //

}

/****************************************直接驱动****************************************/

void OLED_ShowChar(unsigned char x,unsigned char y,char asc)     //OLED显示一个8*16字符

{

     OLED12864_ShowPicture(x, y, 8, 2, (BYTE *)&Ascll_16[(asc-' ')*2]);  

}

void OLED_ShowGBK(unsigned char x,unsigned char y,char *gbk)     //OLED显示一个16*16汉字

{

    unsigned char i;

    for( i=0;i<100;i++ )

    {

        if(( gbk[0]== GBK16.gbn_bum[0] )&&( gbk[1]== GBK16.gbn_bum[1] ))

        {

            OLED12864_ShowPicture(x,y, 16, 2, (BYTE *)&GBK16.gbk_font[0]);  

        }

    }  

}

void OLED_ShowString(unsigned char x,unsigned char y,char *s)

{

    char s_num[2];

        while(*s != '\0')       //字符串不为空，循环

        {

        if ((unsigned char)*s < 0x80)     //根据输入数据的大小判断是字符还是汉字，

        {

            OLED_ShowChar(x,y,*s);

            x+=8;

            s++;

        }

        else

        {

            s_num[0] = *s ;

            s_num[1] = *(s+1) ;

            OLED_ShowGBK(x,y,s_num);

            x+=16;

            s+=2;

        }

                if(x>128)

        {

            x=0;

            y+=16;

        }

        }  

}</font>

OLED.H文件内容如下：

<font size="3">#ifndef __OLED_H

#define __OLED_H

#include "../comm/STC8h.h"  //包含此头文件后，不需要再包含"reg51.h"头文件

#include "../comm/usb.h"     //USB调试及复位所需头文件

void OLED_Init(void);     //OLED初始化

void OLED_ShowChar(unsigned char x,unsigned char y,char asc);     //OLED显示一个8*16字符

void OLED_ShowGBK(unsigned char x,unsigned char y,char *gbk);     //OLED显示一个16*16汉字

void OLED_ShowString(unsigned char x,unsigned char y,char *s);

#endif</font>

FONT.H文件内容如下：(需要显示的内容需要取模放进来哦，不做字模的话无法识别)

<font size="3">#ifndef __FONT_H

#define __FONT_H

/****************************************8*16的点阵************************************/

const char code Ascll_16[][8]=         

{

  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 0

  0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 1

  0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 2

  0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 3

  0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 4

  0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 5

  0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 6

  0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 7

  0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 8

  0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 9

  0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 10

  0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 11

  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 12

  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 13

  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14

  0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 15

  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 16

  0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 17

  0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 18

  0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 19

  0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 20

  0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 21

  0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 22

  0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 23

  0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 24

  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 25

  0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26

  0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 27

  0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 28

  0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 29

  0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 30

  0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 31

  0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 32

  0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 33

  0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 34

  0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 35

  0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 36

  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37

  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 38

  0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 39

  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40

  0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 41

  0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 42

  0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 43

  0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44

  0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45

  0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 46

  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 47

  0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48

  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 49

  0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50

  0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 51

  0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52

  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 53

  0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 54

  0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 55

  0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 56

  0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 57

  0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 58

  0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 59

  0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,//\ 60

  0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 61

  0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 62

  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 63

  0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 64

  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65

  0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66

  0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 67

  0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 68

  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 69

  0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 70

  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 71

  0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 72

  0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73

  0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 74

  0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 75

  0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 76

  0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 77

  0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78

  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 79

  0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 80

  0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 81

  0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82

  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 83

  0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 84

  0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 85

  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 86

  0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 87

  0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 88

  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89

  0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 90

  0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 91

  0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 92

  0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 93

  0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94

};

    //阴码，列形式，逆向，

struct s_font

{

    unsigned char gbk_font[32];

    unsigned char gbn_bum[2];

};

const  struct s_font code GBK16[]=        

{

0x00,0x00,0xF8,0x88,0x88,0x88,0x88,0xFF,0x88,0x88,0x88,0x88,0xF8,0x00,0x00,0x00,

0x00,0x00,0x1F,0x08,0x08,0x08,0x08,0x7F,0x88,0x88,0x88,0x88,0x9F,0x80,0xF0,0x00,"电",//0

0x80,0x82,0x82,0x82,0x82,0x82,0x82,0xE2,0xA2,0x92,0x8A,0x86,0x82,0x80,0x80,0x00,

0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,"子",//1

0x00,0x00,0x00,0xE0,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x20,0x40,0x80,0x00,0x00,

0x08,0x04,0x03,0x00,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,0x00,0x01,0x0E,0x00,"小",//2

0x10,0x2C,0x24,0x24,0xA4,0xA4,0x65,0xA6,0x24,0x24,0x24,0x24,0xA4,0x34,0x0C,0x00,

0x40,0x49,0x49,0x29,0x24,0x14,0x52,0x89,0x7F,0x04,0x0A,0x11,0x10,0x20,0x20,0x00,"家",//3

0x00,0x04,0x04,0xF4,0x94,0x94,0x94,0x9F,0x94,0x94,0x94,0xF4,0x04,0x04,0x00,0x00,

0x40,0x40,0x40,0x7F,0x4A,0x4A,0x4A,0x4A,0x4A,0x4A,0x4A,0x7F,0x40,0x40,0x40,0x00,"直",//4

0x10,0x10,0x10,0xFF,0x10,0x50,0x44,0x54,0x65,0xC6,0x44,0x64,0x54,0x44,0x40,0x00,

0x04,0x44,0x82,0x7F,0x01,0x82,0x82,0x4A,0x56,0x23,0x22,0x52,0x4E,0x82,0x02,0x00,"接",//5

0x02,0xFA,0x82,0x82,0xFE,0x80,0x00,0xFE,0x02,0x12,0x62,0x82,0x62,0x1A,0x02,0x00,

0x08,0x18,0x48,0x84,0x44,0x3F,0x00,0x7F,0x50,0x48,0x46,0x41,0x46,0x58,0x40,0x00,"驱\xfd",//6

0x40,0x44,0xC4,0x44,0x44,0x44,0x40,0x10,0x10,0xFF,0x10,0x10,0x10,0xF0,0x00,0x00,

0x10,0x3C,0x13,0x10,0x14,0xB8,0x40,0x30,0x0E,0x01,0x40,0x80,0x40,0x3F,0x00,0x00,"动",//7

0x20,0x30,0xAC,0x63,0x30,0x02,0x26,0x2A,0xE2,0x26,0x29,0x21,0x29,0x25,0x00,0x00,

0x22,0x67,0x22,0x12,0x52,0x21,0x99,0x87,0x4D,0x55,0x25,0x55,0x4D,0x81,0x81,0x00,"缓",//8

0x04,0x04,0x84,0xE4,0x1C,0x07,0x24,0x24,0x24,0x24,0xA4,0x64,0x24,0x04,0x04,0x00,

0x02,0x01,0x00,0xFF,0x00,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x00,"存",//9

0x00,0x00,0xF8,0x49,0x4A,0x4C,0x48,0xF8,0x48,0x4C,0x4A,0x49,0xF8,0x00,0x00,0x00,

0x10,0x10,0x13,0x12,0x12,0x12,0x12,0xFF,0x12,0x12,0x12,0x12,0x13,0x10,0x10,0x00,"单",//0

0x80,0x80,0x40,0x20,0x10,0x08,0x04,0xC3,0x04,0x08,0x10,0x20,0x40,0x80,0x80,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,"个",//1

0x10,0x0C,0x04,0x24,0x24,0x24,0x25,0x26,0xA4,0x64,0x24,0x04,0x04,0x14,0x0C,0x00,

0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,"字",//2

0x10,0x08,0x04,0x87,0x6C,0x14,0x84,0x94,0x88,0x87,0x84,0xEC,0x94,0x84,0x84,0x00,

0x04,0x02,0x01,0xFF,0x00,0x00,0x00,0x02,0x0C,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,"符",//3

0x10,0x60,0x02,0x0C,0xC0,0x02,0x1E,0xE2,0x02,0x02,0x02,0xE2,0x1E,0x00,0x00,0x00,

0x04,0x04,0x7C,0x03,0x80,0x80,0x40,0x20,0x13,0x0C,0x13,0x20,0x40,0x80,0x80,0x00,"汉",//4

0x10,0x0C,0x04,0x24,0x24,0x24,0x25,0x26,0xA4,0x64,0x24,0x04,0x04,0x14,0x0C,0x00,

0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,"字",//5

0x00,0x00,0xC0,0x40,0x40,0x40,0x7F,0x48,0x48,0x48,0x48,0xC8,0x08,0x08,0x00,0x00,

0x80,0x40,0x37,0x04,0x04,0x14,0x64,0x04,0x14,0x64,0x04,0x07,0x10,0xE0,0x00,0x00,"点",//0

0x20,0x30,0xAC,0x63,0x20,0x18,0x80,0x90,0x90,0xFF,0x90,0x49,0x4A,0x48,0x40,0x00,

0x22,0x67,0x22,0x12,0x12,0x12,0x40,0x40,0x20,0x13,0x0C,0x14,0x22,0x41,0xF8,0x00,"线",//1

0x10,0x60,0x02,0x8C,0x00,0x44,0x54,0x54,0x54,0x7F,0x54,0x54,0x54,0x44,0x40,0x00,

0x04,0x04,0x7E,0x01,0x00,0x00,0xFF,0x15,0x15,0x15,0x55,0x95,0x7F,0x00,0x00,0x00,"清",//0

0x00,0x00,0xFE,0x12,0x92,0xB2,0xD2,0x92,0x92,0x92,0xD2,0xB2,0x9E,0x00,0x00,0x00,

0x40,0x30,0x0F,0x04,0x84,0x64,0x1F,0x04,0x04,0x04,0xFF,0x04,0x04,0x04,0x00,0x00,"屏",//1

0x00,0x10,0x90,0x92,0x52,0x32,0x12,0xFE,0x12,0x31,0x51,0x91,0x90,0x10,0x00,0x00,

0x01,0x81,0x80,0x40,0x31,0x0F,0x01,0x01,0x01,0x4D,0x8B,0x48,0x38,0x01,0x01,0x00,"秀",//2

0x10,0x60,0x02,0x8C,0x00,0x0C,0xA4,0xA4,0xA5,0xE6,0xA4,0xA4,0xA4,0x0C,0x00,0x00,

0x04,0x04,0x7E,0x01,0x00,0x80,0x4F,0x2A,0x0A,0x0F,0x0A,0x2A,0x4F,0x80,0x00,0x00,"演",//0

0x40,0x40,0x42,0x42,0x42,0x42,0x42,0xC2,0x42,0x42,0x42,0x42,0x42,0x40,0x40,0x00,

0x20,0x10,0x08,0x06,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x02,0x04,0x08,0x30,0x00,"示",//1

};

#endif </font>

在主函数中，siwtch中只保留这几行，别的都删掉

  然后将其中的几行语句改成：

<font size="3"> switch (UsbOutBuffer[5])

                {

                    case VK_DIGIT_0:

                        OLED_Init();

                        break;

                    case VK_DIGIT_2:

                        OLED_ShowChar(0,0,'1');

                        break;

                    case VK_DIGIT_3:

                        OLED_ShowGBK(0,2,"电");

                        break;

                    case VK_DIGIT_4:

                        OLED_ShowString(0,4,"电子DIY小家");                           

break;                    

                }

                   </font>

  随后按下键盘的0,2,3，4就可以按顺序出现下面的字了。

三、高级驱动

  首先定义一片缓存区域，因为我们上面讲到一次会输出1024个字节的数据，且这些数据代表了八个大行和128个列。

unsigned char xdata ShowBUFF[8][128];

3.1点的显示：我们刚刚已经分析过了，怎么去点亮一个点，那么这里先来显示一个点，

<font size="3">void OLED_BuffShowPoint(unsigned char x,unsigned char y)     //OLED显示一个dian,x:0-127,y:0-63

{

    ShowBUFF[y/8][x] |= 1<<(y%8);

}</font>

上面的代码第一个y/8表示他在第几行，因为y坐标的取值是0-63,8个点才显示一行，所以除以8取整数就知道他在第几行了，x坐标取值0-127就直接写到对应的列的位置就好了。因为一次写入一个字节，那么这里就要判断这个点在这个字节中的第几个位置，上面y除以8之后，剩下的余数就是他的第几个位置。例如y取值是4，那么他在4/8也就是第0大行的位置，余数是4，说明他是第四小行，而1<<4就是把1往前移动4位。

3.2：字符的显示

<font size="3">void OLED_BuffShowChar(unsigned char x,unsigned char y,char asc)     //OLED显示一个8*16字符

{

    unsigned char j,k;

    for( j=0;j<2;j++ )

    {

        for( k=0;k<8;k++ )

        {

            ShowBUFF[j+y][x+k]=Ascll_16[(asc-' ')*2][j*8+k];

        }

    }   

}</font>

首先这里的一个字符是8*16,那么他必然有一个循环两次的for，这样就可以实现两个大行的显示，这里就是 for( j=0;j<2;j++ )。其次他有八个列，那么需要循环八次，这里就是 for( k=0;k<8;k++ )，这样行和列的坐标就可以确定了，每次写的行就是j+y，列就是x+k。最后我们的取模的数组是从‘ ’开始按顺往下序取的，所以字符的开头减去这个就是起始坐标，其次在字库里一个字符分两行，所以第一个字符的坐标就是0，第二个字符就是2，所以这里第一个坐标要写成(asc-' ')*2，第二个坐标就是这个坐标里的第几个数据了，第一行就是k，第二行就是8+k。

3.3：汉字的显示

<font size="3">void OLED_BuffShowGBK(unsigned char x,unsigned char y,char *gbk)     //OLED显示一个16*16字符

{

    unsigned char i;

    unsigned char j,k;

    for( i=0;i<150;i++ )

    {

        if(( gbk[0]== GBK16.gbn_bum[0] )&&( gbk[1]== GBK16.gbn_bum[1] ))

        {

            for( j=0;j<2;j++ )

            {

                for( k=0;k<16;k++ )

                {

                    ShowBUFF[j+y][x+k]=GBK16.gbk_font[j*16+k];

                }

            }

            break;

        }

    }   

}</font>

这里还有一个汉字显示的程序，大家可以先自己分析一下，这个的实现原理，后面我会单独把答案放评论区里和群里。

3.4汉字和字符的混合现实

<font size="3">void OLED_BuffShowString(unsigned char x,unsigned char y,char *s)

{

    char s_num[2];

        while(*s != '\0')       //字符串不为空，循环

        {

        if ((unsigned char)*s < 0x80)     //根据输入数据的大小判断是字符还是汉字，

        {

            OLED_BuffShowChar(x,y,*s);

            x+=8;

            s++;

        }

        else

        {

            s_num[0] = *s ;

            s_num[1] = *(s+1) ;

            OLED_BuffShowGBK(x,y,s_num);

            x+=16;

            s+=2;

        }

                if(x>127)

        {

            x=0;

            y+=2;

        }

        }      

}</font>

    首先这个函数需要在输入的地方，判断输入的地方是不是为空，通过while(*s != '\0') 来实现，然后判断第一个字节的内码。因为在GBK的内码里，一个字符是1个字节，汉字是2个字节，且字符内码小于0x80，所以如果是字符，调用字符的程序，调用完了x坐标+8，然后指向的地址+1，去开始查询下个字节。汉字的内码是2个字节，显示玩一个汉字x坐标+16，指向的地址+2；

<font size="3">void OLED_BuffShow(void)     

{

    OLED12864_ShowPicture(0,0, 128,8, (BYTE *)&ShowBUFF);     

}</font>

  因为用的缓存的办法实现，所有的需要显示的数据都在单片机内存里，需要显示的话一定要给他发出去才行，这里就是将8*128个数据一次性发出去显示出来。

    上述就是实现的全部过程了，程序里还有一个简单的划线函数（通过画点函数实现），留给屏幕前的你们自由发挥和想象，可以改写个画圆，画方的程序出来。

最后在主函数中插入这个：

<font size="3"> switch (UsbOutBuffer[5])

                {

                    

                    case VK_DIGIT_0:

                        OLED_Init();

                        break;

                    case VK_DIGIT_1:

                        OLED_BuffClear();

                        OLED_ShowString(0,0,"OLED直接驱\xfd动演示");

                        OLED_ShowString(80,2,"--字符");

                        OLED_ShowChar(0,4,'1');

                        OLED_ShowString(0,6,"666");

                        break;

                    case VK_DIGIT_2:

                        OLED_BuffClear();

                        OLED_ShowString(0,0,"OLED直接驱\xfd动演示");

                        OLED_ShowString(80,2,"--汉字");

                        OLED_ShowGBK(0,4,"秀");

                        OLED_ShowString(0,6,"电子DIY小家");     //这一行函数可以自动判断汉字或者字符并显示

                        break;

                    case VK_DIGIT_3:

                        OLED_BuffClear();

                        OLED_ShowString(0,0,"OLED清屏");

                        break;                    

                    

                    case VK_DIGIT_5:

                        OLED_BuffClear();

                        OLED_BuffShowString(0,0,"OLED缓存驱\xfd动演示");

                        OLED_BuffShowString(80,2,"--字符");

                        OLED_BuffShowChar(0,4,'1');

                        OLED_BuffShowString(0,6,"6666666");

                        OLED_BuffShow();                        //缓存显示一定要开显示

                        break;

                    

                    case VK_DIGIT_6:

                        OLED_BuffClear();

                        OLED_BuffShowString(0,0,"OLED缓存驱\xfd动演示");

                        OLED_BuffShowString(80,2,"--汉字");

                        OLED_BuffShowGBK(0,4,"秀");

                        OLED_BuffShowString(0,6,"电子DIY小家");     //这一行函数可以自动判断汉字或者字符并显示

                        OLED_BuffShow();                        //缓存显示一定要开显示

                        break;  

                    

                    case VK_DIGIT_7:

                        OLED_BuffClear();

                        OLED_BuffShowString(0,0,"OLED缓存驱\xfd动演示");

                        OLED_BuffShowString(80,2,"--点线");

                        OLED_BuffShowPoint(0,40);

                        OLED_BuffShowPoint(64,40);              //点和线的x坐标都是0-127，y坐标0-63

                        OLED_BuffShowLine(20,50,108,50);        //

                        OLED_BuffShow();                        //缓存显示一定要开显示

                        break;                                

                    

                }</font>

最后就能完美的运行起来了，运行效果见开头的视频哈。或者这里留下几个截图

看完了文章，觉得有用的请在文末点个赞哈哈undefined

stc-isp-15xx-v6.90S.zip

STC32位8051

    使用USB接口进行数据通信非常方便，在STC-ISP软件上STC USB-CDC/就是串口还能驱动：模拟LED灯，数码管，12864 屏，以及虚拟键盘的输入等功能。  STC最快的1T8051，STC8H8K64U核心功能实验板 （开天斧），免费送，来电0513-55012928申请哦！

STC32位8051

图7，第2步骤小错误纠正一下：因为走的是USB-HID通信协议，不需要安装任何驱动的。

STC32位8051

图7，步骤2有点小错误，纠正下：因为走的是USB-HID通信协议，不需要安装任何驱动的。