12864G-086液晶屏使用

桐桐

之前买了几块12864G液晶屏，原以为和大的12864液晶一样使用就可以了，哪想到老是显示不了，上午花了点时间终于搞定了。

首先是接线，

液晶屏               arduino

  CS                     8

RST                    9

RS                      10

SDA                   11

SCK                    13

VDD                   +5V(看你买的模块是几伏的）

VSS                  GND

LEDA                 +3.3V

以下是程序：

1. #include "Lcd12864.h"
   
2. 
   
3. #include  "SPI.h"
   
4. 
   
5. unsigned char const wo[]={
   
6. 
   
7.       0x50,0x4C,0x44,0x44,0x44,0x44,0x45,0xC6,
   
8. 
   
9.       0x44,0x44,0x44,0x44,0x44,0x54,0x4C,0x00,
   
10. 
    
11.       0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x7F,
    
12. 
    
13.       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    
14. 
    
15.       
    
16. 
    
17.       0x20,0x42,0x04,0x0C,0x80,0xF8,0x88,0x88,
    
18. 
    
19.       0x88,0xFF,0x88,0x88,0xA8,0x18,0x00,0x00,
    
20. 
    
21.       0x04,0x04,0xFE,0x41,0x30,0x8F,0x40,0x22,
    
22. 
    
23.       0x14,0x08,0x14,0x22,0x41,0xC0,0x40,0x00,
    
24. 
    
25.       
    
26. 
    
27.       0x00,0xF8,0x08,0x08,0x08,0x08,0x08,0xFF,
    
28. 
    
29.       0x08,0x08,0x08,0x08,0x08,0xFC,0x08,0x00,
    
30. 
    
31.       0x00,0x03,0x01,0x01,0x01,0x01,0x01,0xFF,
    
32. 
    
33.       0x01,0x01,0x01,0x01,0x01,0x03,0x00,0x00,
    
34. 
    
35.       
    
36. 
    
37.       0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,
    
38. 
    
39.       0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,
    
40. 
    
41.       0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,
    
42. 
    
43.       0x06,0x05,0x04,0x04,0x04,0x06,0x04,0x00
    
44. 
    
45.       
    
46. 
    
47.     };
    
48. 
    
49. void setup()
    
50. 
    
51. {
    
52. 
    
53.    lcd12864 x;
    
54. 
    
55.   x.LcmInit();
    
56. 
    
57. }
    
58. 
    
59. void loop()
    
60. 
    
61. {  
    
62. 
    
63.     lcd12864 x;
    
64. 
    
65.     x.PUTchar16x16(0,0,4,wo);
    
66. 
    
67.     delay(1000);   
    
68. 
    
69. }
    

复制代码

屏幕上显示的是“宁波中学”

下面说一下如何显示具体的字符，库函数里有以下几个函数

LcmInit();               

初始化液晶屏

PUTchar8x8(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put);

PUTchar8x16(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put);

PUTchar16x16(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put);

PUTchar24x24(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put);

以上四个函数差不多，都是现实字符的，但其实这些字符必须通过取模软件取好模才能显示，这里虽然是个函数，只不过是给你计算一下具体的行和列罢了。函数中row，表示第几行，col表示第几列，count表示你要显示的有几个字符，*put表示你要显示的字符的模。

例如我的程序里先用取模软件取好要显示的字符的模，我这里定义为wo（注意汉字取模的时候参数设置，数据排列顺序是:从左到右从上到下，取模方式：纵向8点下高位。）

unsigned char const wo[]={

      //宁

      0x50,0x4C,0x44,0x44,0x44,0x44,0x45,0xC6,

      0x44,0x44,0x44,0x44,0x44,0x54,0x4C,0x00,

      0x00,0x00,0x00,0x00,0x00,0x40,0x80,0x7F,

      0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

      //波

      0x20,0x42,0x04,0x0C,0x80,0xF8,0x88,0x88,

      0x88,0xFF,0x88,0x88,0xA8,0x18,0x00,0x00,

      0x04,0x04,0xFE,0x41,0x30,0x8F,0x40,0x22,

      0x14,0x08,0x14,0x22,0x41,0xC0,0x40,0x00,

      //中

      0x00,0xF8,0x08,0x08,0x08,0x08,0x08,0xFF,

      0x08,0x08,0x08,0x08,0x08,0xFC,0x08,0x00,

      0x00,0x03,0x01,0x01,0x01,0x01,0x01,0xFF,

      0x01,0x01,0x01,0x01,0x01,0x03,0x00,0x00,

      //学

      0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,

      0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,

      0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,

      0x06,0x05,0x04,0x04,0x04,0x06,0x04,0x00

          };

显示的时候用函数：  x.PUTchar16x16(0,0,4,wo);//即意味着从0行0列开始显示4个字符

PUTBMP(unsigned char const *put);

这个函数是显示正向图片，即白底黑字，当然图片得先取好模，注意是128*64分辨率哦

PUTREVERSEBMP(unsigned char const *put);

这个显示反向图片，即黑底白字

LcmClear();

这个函数不解释了。

以下是程序及库函数的百度盘地址：http://pan.baidu.com/s/1bhomVs

以下是取模程序的百度盘地址：http://pan.baidu.com/s/1ntPWPWd

本来想发图片，结果无法上传，大家可以可以去我的博客看：http://blog.sina.com.cn/s/blog_9ab0b7ea0102w35b.html

桐桐

虽然上面的程序已经可以显示了，但是如果要简单的显示个字符数字什么的，有点麻烦，所以干脆加点程序：

#include "Lcd12864.h"

#include  "SPI.h"

   

unsigned char const ascii_8x16[95][16]={

//粗体8x16 点阵的ASCII 码的点阵数据，从"JLX-GB2312"型号的字库IC 中读出来的国标的。

0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //- -(即“空格”）ASCII 码：0X20

0x00,0x00,0x38,0xFC, 0xFC,0x38,0x00,0x00, 0x00,0x00,0x00,0x0D, 0x0D,0x00,0x00,0x00, //-!- ASCII 码：0X21

0x00,0x0E,0x1E,0x00, 0x00,0x1E,0x0E,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //-"-

0x20,0xF8,0xF8,0x20, 0xF8,0xF8,0x20,0x00, 0x02,0x0F,0x0F,0x02, 0x0F,0x0F,0x02,0x00, //-#-

0x38,0x7C,0x44,0x47, 0x47,0xCC,0x98,0x00, 0x06,0x0C,0x08,0x38, 0x38,0x0F,0x07,0x00, //-$-

0x30,0x30,0x00,0x80, 0xC0,0x60,0x30,0x00, 0x0C,0x06,0x03,0x01, 0x00,0x0C,0x0C,0x00, //-%-

0x80,0xD8,0x7C,0xE4, 0xBC,0xD8,0x40,0x00, 0x07,0x0F,0x08,0x08, 0x07,0x0F,0x08,0x00, //-&-

0x00,0x10,0x1E,0x0E, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //-'-

0x00,0x00,0xF0,0xF8, 0x0C,0x04,0x00,0x00, 0x00,0x00,0x03,0x07, 0x0C,0x08,0x00,0x00, //-(-

0x00,0x00,0x04,0x0C, 0xF8,0xF0,0x00,0x00, 0x00,0x00,0x08,0x0C, 0x07,0x03,0x00,0x00, //-)-

0x80,0xA0,0xE0,0xC0, 0xC0,0xE0,0xA0,0x80, 0x00,0x02,0x03,0x01, 0x01,0x03,0x02,0x00, //-*- ASCII 码：0X2A

0x00,0x80,0x80,0xE0, 0xE0,0x80,0x80,0x00, 0x00,0x00,0x00,0x03, 0x03,0x00,0x00,0x00, //-+-

0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x10,0x1E, 0x0E,0x00,0x00,0x00, //-,-

0x80,0x80,0x80,0x80, 0x80,0x80,0x80,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //---

0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x0C, 0x0C,0x00,0x00,0x00, //-.-

0x00,0x00,0x00,0x80, 0xC0,0x60,0x30,0x00, 0x0C,0x06,0x03,0x01, 0x00,0x00,0x00,0x00, //-/-

0xF8,0xF8,0x0C,0xC4, 0x0C,0xF8,0xF0,0x00, 0x03,0x07,0x0C,0x08, 0x0C,0x07,0x03,0x00, //-0- ASCII 码：0X30

0x00,0x10,0x18,0xFC, 0xFC,0x00,0x00,0x00, 0x00,0x08,0x08,0x0F, 0x0F,0x08,0x08,0x00, //-1-

0x08,0x0C,0x84,0xC4, 0x64,0x3C,0x18,0x00, 0x0E,0x0F,0x09,0x08, 0x08,0x0C,0x0C,0x00, //-2-

0x08,0x0C,0x44,0x44, 0x44,0xFC,0xB8,0x00, 0x04,0x0C,0x08,0x08, 0x08,0x0F,0x07,0x00, //-3-

0xC0,0xE0,0xB0,0x98, 0xFC,0xFC,0x80,0x00, 0x00,0x00,0x00,0x08, 0x0F,0x0F,0x08,0x00, //-4- ASCII 码：0X34

0x7C,0x7C,0x44,0x44, 0x44,0xC4,0x84,0x00, 0x04,0x0C,0x08,0x08, 0x08,0x0F,0x07,0x00, //-5-

0xF0,0xF8,0x4C,0x44, 0x44,0xC0,0x80,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0F,0x07,0x00, //-6-

0x0C,0x0C,0x04,0x84, 0xC4,0x7C,0x3C,0x00, 0x00,0x00,0x0F,0x0F, 0x00,0x00,0x00,0x00, //-7-

0xB8,0xFC,0x44,0x44, 0x44,0xFC,0xB8,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0F,0x07,0x00, //-8-

0x38,0x7C,0x44,0x44, 0x44,0xFC,0xF8,0x00, 0x00,0x08,0x08,0x08, 0x0C,0x07,0x03,0x00, //-9-

0x00,0x00,0x00,0x30, 0x30,0x00,0x00,0x00, 0x00,0x00,0x00,0x06, 0x06,0x00,0x00,0x00, //-:-

0x00,0x00,0x00,0x30, 0x30,0x00,0x00,0x00, 0x00,0x00,0x08,0x0E, 0x06,0x00,0x00,0x00, //-;-

0x00,0x80,0xC0,0x60, 0x30,0x18,0x08,0x00, 0x00,0x00,0x01,0x03, 0x06,0x0C,0x08,0x00, //-<-

0x00,0x20,0x20,0x20, 0x20,0x20,0x20,0x00, 0x00,0x01,0x01,0x01, 0x01,0x01,0x01,0x00, //-=-

0x00,0x08,0x18,0x30, 0x60,0xC0,0x80,0x00, 0x00,0x08,0x0C,0x06, 0x03,0x01,0x00,0x00, //->- ASCII 码：0X3E

0x18,0x1C,0x04,0xC4, 0xE4,0x3C,0x18,0x00, 0x00,0x00,0x00,0x0D, 0x0D,0x00,0x00,0x00, //-?-

0xF0,0xF0,0x08,0xC8, 0xC8,0xF8,0xF0,0x00, 0x07,0x0F,0x08,0x0B, 0x0B,0x0B,0x01,0x00, //-@-

0xE0,0xF0,0x98,0x8C, 0x98,0xF0,0xE0,0x00, 0x0F,0x0F,0x00,0x00, 0x00,0x0F,0x0F,0x00, //-A- ASCII 码：0X41

0x04,0xFC,0xFC,0x44, 0x44,0xFC,0xB8,0x00, 0x08,0x0F,0x0F,0x08, 0x08,0x0F,0x07,0x00, //-B-

0xF0,0xF8,0x0C,0x04, 0x04,0x0C,0x18,0x00, 0x03,0x07,0x0C,0x08, 0x08,0x0C,0x06,0x00, //-C-

0x04,0xFC,0xFC,0x04, 0x0C,0xF8,0xF0,0x00, 0x08,0x0F,0x0F,0x08, 0x0C,0x07,0x03,0x00, //-D-

0x04,0xFC,0xFC,0x44, 0xE4,0x0C,0x1C,0x00, 0x08,0x0F,0x0F,0x08, 0x08,0x0C,0x0E,0x00, //-E-

0x04,0xFC,0xFC,0x44, 0xE4,0x0C,0x1C,0x00, 0x08,0x0F,0x0F,0x08, 0x00,0x00,0x00,0x00, //-F-

0xF0,0xF8,0x0C,0x84, 0x84,0x8C,0x98,0x00, 0x03,0x07,0x0C,0x08, 0x08,0x07,0x0F,0x00, //-G-

0xFC,0xFC,0x40,0x40, 0x40,0xFC,0xFC,0x00, 0x0F,0x0F,0x00,0x00, 0x00,0x0F,0x0F,0x00, //-H- ASCII 码：0X48

0x00,0x00,0x04,0xFC, 0xFC,0x04,0x00,0x00, 0x00,0x00,0x08,0x0F, 0x0F,0x08,0x00,0x00, //-I-

0x00,0x00,0x00,0x04, 0xFC,0xFC,0x04,0x00, 0x07,0x0F,0x08,0x08, 0x0F,0x07,0x00,0x00, //-J-

0x04,0xFC,0xFC,0xC0, 0xE0,0x3C,0x1C,0x00, 0x08,0x0F,0x0F,0x00, 0x01,0x0F,0x0E,0x00, //-K-

0x04,0xFC,0xFC,0x04, 0x00,0x00,0x00,0x00, 0x08,0x0F,0x0F,0x08, 0x08,0x0C,0x0E,0x00, //-L-

0xFC,0xFC,0x38,0x70, 0x38,0xFC,0xFC,0x00, 0x0F,0x0F,0x00,0x00, 0x00,0x0F,0x0F,0x00, //-M-

0xFC,0xFC,0x38,0x70, 0xE0,0xFC,0xFC,0x00, 0x0F,0x0F,0x00,0x00, 0x00,0x0F,0x0F,0x00, //-N-

0xF8,0xFC,0x04,0x04, 0x04,0xFC,0xF8,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0F,0x07,0x00, //-O-

0x04,0xFC,0xFC,0x44, 0x44,0x7C,0x38,0x00, 0x08,0x0F,0x0F,0x08, 0x00,0x00,0x00,0x00, //-P-

0xF8,0xFC,0x04,0x04, 0x04,0xFC,0xF8,0x00, 0x07,0x0F,0x08,0x0E, 0x3C,0x3F,0x27,0x00, //-Q-

0x04,0xFC,0xFC,0x44, 0xC4,0xFC,0x38,0x00, 0x08,0x0F,0x0F,0x00, 0x00,0x0F,0x0F,0x00, //-R-

0x18,0x3C,0x64,0x44, 0xC4,0x9C,0x18,0x00, 0x06,0x0E,0x08,0x08, 0x08,0x0F,0x07,0x00, //-S-

0x00,0x1C,0x0C,0xFC, 0xFC,0x0C,0x1C,0x00, 0x00,0x00,0x08,0x0F, 0x0F,0x08,0x00,0x00, //-T-

0xFC,0xFC,0x00,0x00, 0x00,0xFC,0xFC,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0F,0x07,0x00, //-U-

0xFC,0xFC,0x00,0x00, 0x00,0xFC,0xFC,0x00, 0x01,0x03,0x06,0x0C, 0x06,0x03,0x01,0x00, //-V-

0xFC,0xFC,0x00,0x00, 0x00,0xFC,0xFC,0x00, 0x07,0x0F,0x0E,0x03, 0x0E,0x0F,0x07,0x00, //-W-

0x0C,0x3C,0xF0,0xE0, 0xF0,0x3C,0x0C,0x00, 0x0C,0x0F,0x03,0x01, 0x03,0x0F,0x0C,0x00, //-X-

0x00,0x0C,0x7C,0xC0, 0xC0,0x7C,0x3C,0x00, 0x00,0x00,0x08,0x0F, 0x0F,0x08,0x00,0x00, //-Y-

0x1C,0x0C,0x84,0xC4, 0x64,0x3C,0x1C,0x00, 0x0E,0x0F,0x09,0x08, 0x08,0x0C,0x0E,0x00, //-Z-

0x00,0x00,0xFC,0xFC, 0x04,0x04,0x00,0x00, 0x00,0x00,0x0F,0x0F, 0x08,0x08,0x00,0x00, //-[-

0x38,0x70,0xE0,0xC0, 0x80,0x00,0x00,0x00, 0x00,0x00,0x00,0x01, 0x03,0x07,0x0E,0x00, //-\-

0x00,0x00,0x04,0x04, 0xFC,0xFC,0x00,0x00, 0x00,0x00,0x08,0x08, 0x0F,0x0F,0x00,0x00, //-]-

0x08,0x0C,0x06,0x03, 0x06,0x0C,0x08,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //-^-

0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20, //-_-

0x00,0x00,0x03,0x07, 0x04,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //-`-

0x00,0xA0,0xA0,0xA0, 0xE0,0xC0,0x00,0x00, 0x07,0x0F,0x08,0x08, 0x07,0x0F,0x08,0x00, //-a- ASCII 码：0X61

0x04,0xFC,0xFC,0x20, 0x60,0xC0,0x80,0x00, 0x00,0x0F,0x0F,0x08, 0x08,0x0F,0x07,0x00, //-b-

0xC0,0xE0,0x20,0x20, 0x20,0x60,0x40,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0C,0x04,0x00, //-c-

0x80,0xC0,0x60,0x24, 0xFC,0xFC,0x00,0x00, 0x07,0x0F,0x08,0x08, 0x07,0x0F,0x08,0x00, //-d-

0xC0,0xE0,0xA0,0xA0, 0xA0,0xE0,0xC0,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0C,0x04,0x00, //-e-

0x40,0xF8,0xFC,0x44, 0x0C,0x18,0x00,0x00, 0x08,0x0F,0x0F,0x08, 0x00,0x00,0x00,0x00, //-f

0xC0,0xE0,0x20,0x20, 0xC0,0xE0,0x20,0x00, 0x27,0x6F,0x48,0x48, 0x7F,0x3F,0x00,0x00, //-g-

0x04,0xFC,0xFC,0x40, 0x20,0xE0,0xC0,0x00, 0x08,0x0F,0x0F,0x00, 0x00,0x0F,0x0F,0x00, //-h-

0x00,0x00,0x20,0xEC, 0xEC,0x00,0x00,0x00, 0x00,0x00,0x08,0x0F, 0x0F,0x08,0x00,0x00, //-i-

0x00,0x00,0x00,0x00, 0x20,0xEC,0xEC,0x00, 0x00,0x30,0x70,0x40, 0x40,0x7F,0x3F,0x00, //-j-

0x04,0xFC,0xFC,0x80, 0xC0,0x60,0x20,0x00, 0x08,0x0F,0x0F,0x01, 0x03,0x0E,0x0C,0x00, //-k-

0x00,0x00,0x04,0xFC, 0xFC,0x00,0x00,0x00, 0x00,0x00,0x08,0x0F, 0x0F,0x08,0x00,0x00, //-l-

0xE0,0xE0,0x60,0xC0, 0x60,0xE0,0xC0,0x00, 0x0F,0x0F,0x00,0x07, 0x00,0x0F,0x0F,0x00, //-m-

0x20,0xE0,0xC0,0x20, 0x20,0xE0,0xC0,0x00, 0x00,0x0F,0x0F,0x00, 0x00,0x0F,0x0F,0x00, //-n-

0xC0,0xE0,0x20,0x20, 0x20,0xE0,0xC0,0x00, 0x07,0x0F,0x08,0x08, 0x08,0x0F,0x07,0x00, //-o-

0x20,0xE0,0xC0,0x20, 0x20,0xE0,0xC0,0x00, 0x40,0x7F,0x7F,0x48, 0x08,0x0F,0x07,0x00, //-p-

0xC0,0xE0,0x20,0x20, 0xC0,0xE0,0x20,0x00, 0x07,0x0F,0x08,0x48, 0x7F,0x7F,0x40,0x00, //-q-

0x20,0xE0,0xC0,0x60, 0x20,0xE0,0xC0,0x00, 0x08,0x0F,0x0F,0x08, 0x00,0x00,0x00,0x00, //-r-

0x40,0xE0,0xA0,0x20, 0x20,0x60,0x40,0x00, 0x04,0x0C,0x09,0x09, 0x0B,0x0E,0x04,0x00, //-s-

0x20,0x20,0xF8,0xFC, 0x20,0x20,0x00,0x00, 0x00,0x00,0x07,0x0F, 0x08,0x0C,0x04,0x00, //-t-

0xE0,0xE0,0x00,0x00, 0xE0,0xE0,0x00,0x00, 0x07,0x0F,0x08,0x08, 0x07,0x0F,0x08,0x00, //-u-

0x00,0xE0,0xE0,0x00, 0x00,0xE0,0xE0,0x00, 0x00,0x03,0x07,0x0C, 0x0C,0x07,0x03,0x00, //-v-

0xE0,0xE0,0x00,0x80, 0x00,0xE0,0xE0,0x00, 0x07,0x0F,0x0C,0x07, 0x0C,0x0F,0x07,0x00, //-w-

0x20,0x60,0xC0,0x80, 0xC0,0x60,0x20,0x00, 0x08,0x0C,0x07,0x03, 0x07,0x0C,0x08,0x00, //-x-

0xE0,0xE0,0x00,0x00, 0x00,0xE0,0xE0,0x00, 0x47,0x4F,0x48,0x48, 0x68,0x3F,0x1F,0x00, //-y-

0x60,0x60,0x20,0xA0, 0xE0,0x60,0x20,0x00, 0x0C,0x0E,0x0B,0x09, 0x08,0x0C,0x0C,0x00, //-z- //

0x00,0x40,0x40,0xF8, 0xBC,0x04,0x04,0x00, 0x00,0x00,0x00,0x07, 0x0F,0x08,0x08,0x00, //-{-

0x00,0x00,0x00,0xBC, 0xBC,0x00,0x00,0x00, 0x00,0x00,0x00,0x0F, 0x0F,0x00,0x00,0x00, //-|-

0x00,0x04,0x04,0xBC, 0xF8,0x40,0x40,0x00, 0x00,0x08,0x08,0x0F, 0x07,0x00,0x00,0x00, //-}-

0x08,0x0C,0x04,0x0C, 0x08,0x0C,0x04,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, //-~- ASCII 码：0X7E

};

float pm25=521.13;

String str1="hello world!";

//以下是显示字符串的自定义函数。

void lcdprint8x16(int row,int col,String str)

{

  int sl=str.length();

  char ch;

  int chi;

  for(int i=0;i

    { lcd12864 x;

      ch=str.charAt(i);

      chi=ch;

      x.PUTchar8x16(row,col+i,1,ascii_8x16[chi-32]);

    }

}

void setup()

{

   lcd12864 x;

  x.LcmInit();

}

void loop()

{  

    String str=String(pm25);//把浮点数变成字符串

    lcdprint8x16(0,1,str);//将str字符显示在第0行第1列开始

    lcdprint8x16(2,0,str1);//将str1字符串显示在第1行第0列开始（库函数里行的倍数不

                                       //对，懒得改了。）

    delay(1000);   

}