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[研电赛技术支持] IIC协议——OLED屏幕

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 楼主| chenci2013 发表于 2023-11-19 20:22 | 显示全部楼层 |阅读模式
LED, LED屏, LED屏幕, OLED, OLED屏
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  1. 

  2. #include "intrins.h"
    

  3.  
    

  4. sbit sda=P0^3;
    

  5. sbit scl=P0^1;
    

  6.  
    

  7. void i2c_start(void);   
    

  8. void i2c_stop(void);
    

  9. char ack(void);
    

  10. void send_messege_i2c(char messege);
    

  11. void w_cmd_i2c(char cmd);
    

  12. void w_data_i2c(char data1);
    

  13. void init_i2c(void);
    

  14. void clear_oled(void);
    

  15.  
    

  16. code char tx[]={
    

  17. 0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  18. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
    

  19. 0x01,0x03,0x03,0x03,0x07,0x07,0x05,0x07,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x01,
    

  20. 0x05,0x0F,0x0F,0x0F,0x07,0x05,0x07,0x05,0x07,0x07,0x07,0x0F,0x0F,0x0F,0x0F,0x0F,
    

  21. 0x0F,0x4F,0x0F,0x0F,0x0F,0x0F,0x0F,0x1F,0x1F,0x1F,0x0F,0x0F,0x1F,0x1F,0x1F,0x1F,
    

  22. 0x1F,0x3F,0x1F,0x1F,0x7F,0x1F,0x1F,0x9F,0x9F,0x3F,0x7F,0x6F,0x6F,0x5F,0x9F,0xBF,
    

  23. 0xBF,0xBF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  24. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  25. 0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  26. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  27. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  28. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  29. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  30. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
    

  31. 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x03,0x1F,0x1F,0x1F,0x3F,0x3F,0x1F,
    

  32. 0xCF,0xEF,0xF7,0xD7,0xDF,0xFB,0xFF,0x9F,0x9E,0x9F,0x8F,0x8F,0x9F,0x9F,0x9F,0xBF,
    

  33. 0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  34. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
    

  35. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  36. 0x00,0x00,0x00,0x00,0x00,0x00,0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,0xF8,0xF8,0xFC,0xFC,
    

  37. 0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFC,0xE0,0xC0,0x80,
    

  38. 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  39. 0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  40. 0x00,0x01,0x0C,0x44,0x60,0xF5,0xE0,0xC0,0xC0,0xC0,0xC0,0xC0,0xD8,0xFE,0xE7,0xE5,
    

  41. 0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  42. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  43. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xC0,0xC0,0x80,0x80,0x00,0x08,0x08,
    

  44. 0xC8,0x98,0x98,0x88,0x80,0x80,0xC0,0x81,0x81,0xC7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  45. 0xFF,0xDF,0x87,0x87,0xC3,0xC3,0xA3,0x91,0x91,0x11,0x11,0x19,0x99,0x89,0x09,0x09,
    

  46. 0x01,0x83,0xC3,0xC2,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  47. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  48. 0x00,0x00,0x00,0x00,0x00,0x03,0x37,0x3D,0xBF,0xBF,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  49. 0xFF,0xFF,0x00,0x00,0x20,0x40,0x40,0x40,0x40,0x06,0x06,0x00,0x00,0x00,0x00,0x00,
    

  50. 0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  51. 0x00,0x00,0x00,0x1E,0x3E,0x7C,0x70,0xE0,0xC3,0x1F,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  52. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,
    

  53. 0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  54. 0xFF,0xFF,0xFF,0xFF,0x1F,0x00,0x00,0x40,0x70,0x3C,0x1C,0x00,0x00,0x00,0x00,0x00,
    

  55. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  56. 0x00,0xC0,0xA0,0xC0,0xC0,0x00,0xC5,0xFF,0xFF,0xFF,0xFF,0xFD,0xFD,0xFF,0xFF,0xFF,
    

  57. 0xFF,0xFF,0x00,0x00,0x00,0x80,0x00,0x80,0x00,0x00,0xC0,0xC0,0x00,0xC0,0xC0,0x00,
    

  58. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
    

  59. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x0F,0x3F,0x7F,0xFF,0xFF,
    

  60. 0xFF,0xFF,0xFF,0xFF,0xDF,0x9F,0x9F,0x1F,0x1F,0x1E,0x9E,0xDE,0xDE,0xDE,0xDE,0xDE,
    

  61. 0xDE,0x1E,0x1C,0x1C,0x1F,0x1F,0x9F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x3F,0x1F,
    

  62. 0x1F,0x07,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,
    

  63. 0x40,0x40,0x00,0x00,0x00,0x00,0x30,0x08,0x08,0x03,0x80,0x80,0x80,0xF8,0xF8,0xFE,
    

  64. 0xEF,0xC7,0xE7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFD,0xFF,0xFF,0xFF,0xFF,
    

  65. 0xFF,0xFF,0x00,0x00,0xE0,0xEF,0xE0,0xEF,0xE0,0x80,0x0F,0x6F,0x60,0xCF,0xAF,0xBF,
    

  66. 0x23,0x84,0xC0,0xA0,0xE0,0xE0,0xE0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,
    

  67. 0x02,0x04,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  68. 0x01,0x07,0x0F,0x1F,0x3F,0x3F,0x7F,0x7C,0x7C,0xF8,0xF9,0xFB,0xFB,0xFB,0xFB,0xF9,
    

  69. 0xF9,0x78,0x78,0x7C,0x3E,0x3F,0x1F,0x1F,0x0F,0x07,0x03,0x01,0x00,0x00,0x00,0x00,
    

  70. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
    

  71. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC1,0xE1,0xFF,0xFF,0xFE,0xFE,
    

  72. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  73. 0xFF,0xFF,0x00,0x00,0x9F,0xBF,0xDF,0xFF,0xFF,0xEF,0xE0,0x98,0x98,0x9A,0x87,0xA7,
    

  74. 0xA7,0x8F,0x8F,0x9F,0x9F,0x9A,0x9E,0x9C,0xFF,0xFB,0xFA,0xFC,0xFC,0xFC,0xEC,0xE8,
    

  75. 0xF8,0xF0,0xB0,0xB0,0xA0,0xE0,0xC0,0xC0,0xC0,0x80,0x80,0x80,0x80,0x00,0x00,0x20,
    

  76. 0x00,0x00,0x00,0x40,0xC0,0xC0,0x44,0x04,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,
    

  77. 0x00,0x00,0x00,0x00,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xE0,0xE0,0xE0,0xE0,0xE0,
    

  78. 0xE0,0xD0,0xB0,0xF0,0xF8,0xF8,0xB8,0x9C,0xDC,0xDC,0x7E,0xFC,0xE4,0xEC,0xEC,0xF4,
    

  79. 0xF8,0xF8,0xFC,0xFC,0xF4,0xFE,0xFE,0xFE,0xFE,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,
    

  80. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};    //这是page7的内容
    

  81.  
    

  82. void main(void)
    

  83. {        
    

  84.         unsigned char i;
    

  85.         unsigned int j;
    

  86.         /*--  文字:  我  --*/
    

  87. /*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/
    

  88.         
    

  89.         
    

  90.         init_i2c();
    

  91.         clear_oled();   //清屏函数
    

  92.         
    

  93.         w_cmd_i2c(0x20);  //选择页寻址模式
    

  94.         w_cmd_i2c(0x02);
    

  95.         
    

  96.         //w_cmd_i2c(0xB0);  //选择page  1011 0xxx
    

  97.         //w_cmd_i2c(0x00);    //设置起始地址  低位
    

  98.         //w_cmd_i2c(0x10);    //设置起始地址  高位
    

  99.         //w_data_i2c(0x80);  //发送数据
    

  100.  
    

  101.         for(i=0;i<8;i++){
    

  102.                 
    

  103.                 w_cmd_i2c(0xB0+i);    //变换page  共有0-7 8个
    

  104.                 w_cmd_i2c(0x00);    //设置起始地址  低位
    

  105.                 w_cmd_i2c(0x10);    //设置起始地址  高位
    

  106.                 //i=3;
    

  107.                 for(j=128*i; j<(128*(i+1)); j++){   //变换的是tx中的数据
    

  108.                         w_data_i2c(tx[j]);  //tx中的数据  
    

  109.                 }
    

  110.         }
    

  111.  
    

  112.         while(1){}
    

  113. }  
    

  114. //下面是函数封装
    

  115.  
    

  116.  
    

  117. void clear_oled(void)
    

  118. {
    

  119.         char i;  int j;
    

  120.  
    

  121.         for(i=0;i<8;i++){
    

  122.                 w_cmd_i2c(0xB0+i);    //变换page
    

  123.                 w_cmd_i2c(0x00);    //设置起始地址  低位
    

  124.                 w_cmd_i2c(0x10);    //设置起始地址  高位
    

  125.                 for(j=0;j<128;j++){
    

  126.                         w_data_i2c(0x00);  //写0就行  
    

  127.                 }
    

  128.         }
    

  129.         
    

  130. }
    

  131.  
    

  132. void init_i2c(void)
    

  133. {
    

  134.         w_cmd_i2c(0xAE);//--display off
    

  135.         w_cmd_i2c(0x00);//---set low column address
    

  136.         w_cmd_i2c(0x10);//---set high column address
    

  137.         w_cmd_i2c(0x40);//--set start line address 
    

  138.         w_cmd_i2c(0xB0);//--set page address
    

  139.         w_cmd_i2c(0x81); // contract control
    

  140.         w_cmd_i2c(0xFF);//--128 
    

  141.         w_cmd_i2c(0xA1);//set segment remap
    

  142.         w_cmd_i2c(0xA6);//--normal / reverse
    

  143.         w_cmd_i2c(0xA8);//--set multiplex ratio(1 to 64)
    

  144.         w_cmd_i2c(0x3F);//--1/32 duty
    

  145.         w_cmd_i2c(0xC8);//Com scan direction
    

  146.         w_cmd_i2c(0xD3);//-set display offset
    

  147.         w_cmd_i2c(0x00);//
    

  148.         w_cmd_i2c(0xD5);//set osc division
    

  149.         w_cmd_i2c(0x80);//
    

  150.         w_cmd_i2c(0xD8);//set area color mode off
    

  151.         w_cmd_i2c(0x05);//
    

  152.         w_cmd_i2c(0xD9);//Set Pre-Charge Period
    

  153.         w_cmd_i2c(0xF1);//
    

  154.         w_cmd_i2c(0xDA);//set com pin configuartion
    

  155.         w_cmd_i2c(0x12);//
    

  156.         w_cmd_i2c(0xDB);//set Vcomh
    

  157.         w_cmd_i2c(0x30);//
    

  158.         w_cmd_i2c(0x8D);//set charge pump enable
    

  159.         w_cmd_i2c(0x14);//
    

  160.         w_cmd_i2c(0xAF);//--turn on oled panel
    

  161. }
    

  162.  
    

  163. void w_cmd_i2c(char cmd)
    

  164. {
    

  165.         i2c_start();
    

  166.         send_messege_i2c(0x78);
    

  167.         ack();
    

  168.         send_messege_i2c(0x00);
    

  169.         ack();
    

  170.         send_messege_i2c(cmd);
    

  171.         ack();
    

  172.         i2c_stop();
    

  173. }
    

  174.  
    

  175. void w_data_i2c(char data1)
    

  176. {
    

  177.         i2c_start();
    

  178.         send_messege_i2c(0x78);
    

  179.         ack();
    

  180.         send_messege_i2c(0x40);
    

  181.         ack();
    

  182.         send_messege_i2c(data1);
    

  183.         ack();
    

  184.         i2c_stop();
    

  185. }
    

  186.  
    

  187. void i2c_start(void)
    

  188. {
    

  189.         scl=1;
    

  190.         sda=0;        
    

  191.         sda=1;  //我的  
    

  192.         /*
    

  193.         scl=0;  //老师的
    

  194.         sda=1;
    

  195.         scl=1;*/
    

  196.         
    

  197.         _nop_();   //
    

  198.         sda=0;
    

  199.         _nop_();   //
    

  200.         scl=0;
    

  201. }
    

  202.  
    

  203. void i2c_stop(void)
    

  204. {
    

  205.         scl=0;
    

  206.         sda=0;
    

  207.         scl=1;
    

  208.         _nop_();   //
    

  209.         sda=1;
    

  210.         _nop_();   //
    

  211.         sda=0;  //老师不要这个
    

  212. }
    

  213.  
    

  214. char ack(void)      //应答信号
    

  215. {
    

  216.         char flag;
    

  217.         sda=1;
    

  218.         //_nop_();  //老师要的
    

  219.         scl=1;
    

  220.         _nop_();
    

  221.         flag=sda;
    

  222.         //_nop_();  //老师要的
    

  223.         scl=0;
    

  224.         _nop_();
    

  225.         return flag;
    

  226. }
    

  227.  
    

  228. void send_messege_i2c(char messege)
    

  229. {
    

  230.         char i;
    

  231.         
    

  232.         for(i=0;i<8;i++){
    

  233.                 scl=0;
    

  234.                 _nop_();   //必要
    

  235.                 sda= messege & 0x80 ;        
    

  236.                 //_nop_();  //老师要的
    

  237.                 scl=1;
    

  238.                 _nop_();
    

  239.                 scl=0;
    

  240.                 messege=messege<<1;
    

  241.         }
    

  242. }
    

  243. 原文链接：https://blog.csdn.net/m0_67794575/article/details/130902543


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chenqianqian 发表于 2023-11-22 08:39 来自手机 | 显示全部楼层
IIC速率还是慢了点
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