[X-NUCLEO-IKS01A2测评] 连接串口黑白LCD测试

zhjb1

[X-NUCLEO-IKS01A2测评] 连接串口黑白LCD测试 [复制链接]

 查看X-NUCLEO-IKS01A2开发板的逻辑连接示意图，见图21。X-NUCLEO-IKS01A2占用了Arduino的A2、A3；D4、D5、D6、D14、D15以及D2工8个模拟数字口，串口就采用模拟串
口的方式，连接1块102X65的黑白LCD，可以设定为显示8行每行10个以上ASCII码。计划采用没有被占用的D13~D10-4个数据口+2根电源线构成6线LCD。
为了整洁好看，我们将LCD模块的设置函数单独创建一个incs文件夹，将6903.h文档放在里面，并且在工程项目中声明此默认文件夹的路径，将此文件夹加入到工程项目中
。6903.h的代码如下，因为有注释，解释省了：

1. DigitalOut sdat(D13);
   
2. DigitalOut sclk(D12);
   
3. DigitalOut sreg(D11);
   
4. DigitalOut sres(D10);
   
5. //6903 102X64LCD
   
6. const unsigned char asc2[][8]={//8x6 Dots 32-126[0-94]
   
7. {0x00,0x3E,0x45,0x49,0x51,0x3E},//0
   
8. {0x00,0x00,0x21,0x7F,0x01,0x00},//1
   
9. {0x00,0x31,0x43,0x45,0x49,0x31},//2
   
10. {0x00,0x22,0x49,0x49,0x49,0x36},//3
    
11. {0x00,0x04,0x0C,0x14,0x7F,0x04},//4
    
12. {0x00,0x72,0x51,0x51,0x51,0x4E},//5-5
    
13. {0x00,0x3E,0x49,0x49,0x49,0x06},//6
    
14. {0x00,0x40,0x43,0x4C,0x50,0x60},//7
    
15. {0x00,0x36,0x49,0x49,0x49,0x36},//8
    
16. {0x00,0x30,0x48,0x48,0x48,0x3F},//9
    
17. {0x00,0x1F,0x24,0x64,0x24,0x1F},//A-10
    
18. {0x00,0x41,0x7F,0x49,0x49,0x36},//B
    
19. {0x00,0x3E,0x41,0x41,0x41,0x22},//C
    
20. {0x00,0x41,0x7F,0x41,0x41,0x3E},//D
    
21. {0x00,0x41,0x7F,0x49,0x49,0x63},//E
    
22. {0x00,0x41,0x7F,0x49,0x5C,0x60},//F-15
    
23. {0x00,0x3E,0x41,0x45,0x47,0x24},//G
    
24. {0x41,0x7F,0x08,0x08,0x08,0x7F},//H
    
25. {0x00,0x00,0x41,0x7F,0x41,0x00},//I
    
26. {0x00,0x42,0x41,0x7F,0x40,0x40},//J
    
27. {0x00,0x41,0x7F,0x59,0x24,0x43},//K-20
    
28. {0x00,0x40,0x7F,0x41,0x01,0x03},//L
    
29. {0x00,0x7F,0x20,0x1E,0x20,0x7F},//M
    
30. {0x00,0x7F,0x30,0x18,0x06,0x7F},//N
    
31. {0x00,0x3E,0x41,0x41,0x41,0x3E},//O
    
32. {0x00,0x41,0x7F,0x49,0x48,0x30},//P-25
    
33. {0x00,0x3E,0x41,0x47,0x42,0x3D},//Q
    
34. {0x00,0x41,0x7F,0x49,0x4C,0x33},//R
    
35. {0x00,0x32,0x49,0x49,0x49,0x26},//S
    
36. {0x00,0x60,0x41,0x7F,0x41,0x60},//T
    
37. {0x00,0x7E,0x01,0x01,0x01,0x7E},//U-30
    
38. {0x00,0x7C,0x02,0x01,0x02,0x7C},//V
    
39. {0x00,0x7C,0x03,0x3C,0x03,0x7C},//W
    
40. {0x00,0x43,0x24,0x18,0x24,0x43},//X
    
41. {0x00,0x60,0x18,0x07,0x18,0x60},//Y
    
42. {0x00,0x63,0x45,0x49,0x51,0x63},//Z-35
    
43. {0x00,0x00,0x00,0x01,0x00,0x00},//.
    
44. {0x00,0x14,0x14,0x14,0x14,0x14},//=
    
45. {0x00,0x08,0x08,0x3E,0x08,0x08},//+
    
46. {0x00,0x08,0x08,0x08,0x08,0x08},//-
    
47. {0x00,0x00,0x00,0x24,0x00,0x00},//:-40
    
48. };
    
49. //Write Plus
    
50. void wri(void){sclk=0;sclk=1;}
    
51. //Write a byte to lcd dt=data,com=reg/data
    
52. void b2l(unsigned char dt,unsigned char com){
    
53. unsigned char i;
    
54. if(com)sreg=1;else sreg=0;
    
55. for(i=0;i<8;i++){
    
56.   if(dt&0x80){sdat=1;}else{sdat=0;};
    
57.   dt=dt<<1;
    
58.   wri();
    
59. }
    
60. }
    
61. //Set lcd display X,Y
    
62. void setXY(unsigned char X,unsigned char Y){
    
63. b2l(0x40 | Y,0);//column
    
64. b2l(0x80 | X,0);//row
    
65. }
    
66. //lcd Clear
    
67. void lcdClear(void){
    
68. unsigned char t,k;
    
69. setXY(0,0);
    
70. for(t=0;t<9;t++){for(k=0;k<102;k++){b2l(0x00,1);}}
    
71. }
    
72. //display a ASCII code
    
73. void c2l(unsigned char x,unsigned char y,unsigned char c){
    
74. unsigned char line;
    
75. setXY(x*6,y);   
    
76. for (line=0;line<6;line++) b2l(asc2[c][line],1);
    
77. }
    
78. //LCD6903 Initial 102x64
    
79. void lcdInit(void){
    
80. wait(0.050);
    
81. sres=0;
    
82. wait(0.050);
    
83. sres=1;
    
84. wait(0.050);
    
85. b2l(0x25,0);//00100 PD=1dcOn|=0Dcoff V=0Up|=1Left H==1
    
86. wait(0.0005);
    
87. b2l(0x14,0);//Plus width L000~111=1/6-1/7-1/8-1/9//14=1/7
    
88. wait(0.0005);
    
89. b2l(0xB4,0);//SET VOP~8.96V
    
90. wait(0.0005);
    
91. b2l(0x20,0);//PD=0,H=0,V=0
    
92. b2l(0x0C,0);//Set off
    
93. wait(0.0005);
    
94. }
    
95. //Display ASCII Test
    
96. void dispAsc(void){
    
97. int i,j,k=0;
    
98. for(i=0;i<8;i++){
    
99.   for(j=0;j<17;j++){
    
100.    c2l(j,i,k);
     
101.    if(k>39){k=0;}else{k++;}
     
102.   }
     
103. }
     
104. }
     
105. //END Files//
     
106. main.cpp主程序改为：
     
107. #include "mbed.h"
     
108. #include "6903.h"
     
109. DigitalOut myled(PA_5);
     
110. int main(){
     
111. lcdInit();
     
112. myled=1;
     
113. while(true){
     
114.   dispAsc();
     
115.   myled=!myled;
     
116.   wait(1);
     
117.   lcdClear();
     
118. }
     
119. }

复制代码

编译下载后的结果见照片22，硬件连接逻辑见照片23。由于设计的ASCII点阵为8X6的，因此一行可以显示17个ASCII码，一共可以显示8行，这样就足够了。
实际上此工程编译有5个警告，可以先不用理睬他。

nmg

zhjb1，代码嵌入的形式给你改了下，建议后面的发帖涉及到代码嵌入时，使用编辑器中的代码嵌入功能，方便网友查看

zhjb1

nmg 发表于 2017-9-25 10:38
zhjb1，代码嵌入的形式给你改了下，建议后面的发帖涉及到代码嵌入时，使用编辑器中的代码嵌入功能，方便网 ...

好的，还不会用，下次试试

okhxyyo

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