21ic电子技术开发论坛 › 单片机与嵌入式系统 › Microchip › 如何将8x16字符写到SSD1306的OLED显示屏上
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[PIC®/AVR®/dsPIC®产品] 如何将8x16字符写到SSD1306的OLED显示屏上

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6535|11
 楼主| dongnanxibei 发表于 2025-2-19 09:34 | 显示全部楼层 |阅读模式
LED, LED显示, OLED, OLED显示, OLED显示屏
显示屏是128×64分辨率的，字符集的头文件如下
复制
  1. #ifndef __ASCII8X16_H
    

  2. #define __ASCII8X16_H 
    


  3. 

  4. //16*16 ASCII字符集点阵
    

  5. unsigned char code asc2_1608[][16]={          
    

  6. {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*" ",0*/
    

  7. {0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00},/*"!",1*/
    

  8. {0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*""",2*/
    

  9. {0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00},/*"#",3*/
    

  10. {0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00},/*"$",4*/
    

  11. {0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00},/*"%",5*/
    

  12. {0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10},/*"&",6*/
    

  13. {0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"'",7*/
    

  14. {0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00},/*"(",8*/
    

  15. {0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00},/*")",9*/
    

  16. {0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00},/*"*",10*/
    

  17. {0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00},/*"+",11*/
    

  18. {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00},/*",",12*/
    

  19. {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01},/*"-",13*/
    

  20. {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00},/*".",14*/
    

  21. {0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00},/*"/",15*/
    

  22. {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00},/*"0",16*/
    

  23. {0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},/*"1",17*/
    

  24. {0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},/*"2",18*/
    

  25. {0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},/*"3",19*/
    

  26. {0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},/*"4",20*/
    

  27. {0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},/*"5",21*/
    

  28. {0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},/*"6",22*/
    

  29. {0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},/*"7",23*/
    

  30. {0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},/*"8",24*/
    

  31. {0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},/*"9",25*/
    

  32. {0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00},/*":",26*/
    

  33. {0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00},/*";",27*/
    

  34. {0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00},/*"<",28*/
    

  35. {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00},/*"=",29*/
    

  36. {0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00},/*">",30*/
    

  37. {0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00},/*"?",31*/
    

  38. {0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00},/*"@",32*/
    

  39. {0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20},/*"A",33*/
    

  40. {0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00},/*"B",34*/
    

  41. {0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},/*"C",35*/
    

  42. {0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00},/*"D",36*/
    

  43. {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00},/*"E",37*/
    

  44. {0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00},/*"F",38*/
    

  45. {0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00},/*"G",39*/
    

  46. {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20},/*"H",40*/
    

  47. {0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},/*"I",41*/
    

  48. {0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00},/*"J",42*/
    

  49. {0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00},/*"K",43*/
    

  50. {0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00},/*"L",44*/
    

  51. {0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00},/*"M",45*/
    

  52. {0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00},/*"N",46*/
    

  53. {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00},/*"O",47*/
    

  54. {0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00},/*"P",48*/
    

  55. {0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00},/*"Q",49*/
    

  56. {0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20},/*"R",50*/
    

  57. {0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00},/*"S",51*/
    

  58. {0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},/*"T",52*/
    

  59. {0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},/*"U",53*/
    

  60. {0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00},/*"V",54*/
    

  61. {0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00},/*"W",55*/
    

  62. {0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20},/*"X",56*/
    

  63. {0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00},/*"Y",57*/
    

  64. {0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00},/*"Z",58*/
    

  65. {0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00},/*"[",59*/
    

  66. {0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00},/*"",60*/
    

  67. {0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00},/*"]",61*/
    

  68. {0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"^",62*/
    

  69. {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},/*"_",63*/
    

  70. {0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"`",64*/
    

  71. {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20},/*"a",65*/
    

  72. {0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00},/*"b",66*/
    

  73. {0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00},/*"c",67*/
    

  74. {0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20},/*"d",68*/
    

  75. {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00},/*"e",69*/
    

  76. {0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},/*"f",70*/
    

  77. {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00},/*"g",71*/
    

  78. {0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},/*"h",72*/
    

  79. {0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},/*"i",73*/
    

  80. {0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00},/*"j",74*/
    

  81. {0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00},/*"k",75*/
    

  82. {0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},/*"l",76*/
    

  83. {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F},/*"m",77*/
    

  84. {0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20},/*"n",78*/
    

  85. {0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00},/*"o",79*/
    

  86. {0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00},/*"p",80*/
    

  87. {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80},/*"q",81*/
    

  88. {0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00},/*"r",82*/
    

  89. {0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00},/*"s",83*/
    

  90. {0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00},/*"t",84*/
    

  91. {0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20},/*"u",85*/
    

  92. {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00},/*"v",86*/
    

  93. {0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00},/*"w",87*/
    

  94. {0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00},/*"x",88*/
    

  95. {0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00},/*"y",89*/
    

  96. {0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00},/*"z",90*/
    

  97. {0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40},/*"{",91*/
    

  98. {0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00},/*"|",92*/
    

  99. {0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00},/*"}",93*/
    

  100. {0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"~",94*/
    

  101. };
    

  102. #endif
经过琢磨使用下面的函数可以完成
复制
  1. void WriteAscii8x16(u8 x, u8 y, u8 charData) {
    

  2.     u8 i;
    

  3.         u8 c=0;
    

  4.         c=charData-' ';
    

  5.         
    


  6. 

  7.     if (x > (128 - 16)) return;  // 检查x坐标是否超出范围
    

  8.     if (y >= 8) return;          // 检查y坐标是否超出范围
    


  9. 

  10.     Set_Dot_Addr(x, y);          // 设置起始地址
    

  11.     for (i = 0; i < 16; i++) {   // 写入16列数据
    

  12.                                 if(i==8) Set_Dot_Addr(x, y+1);
    

  13.         OLED_WriteData(asc2_1608[c][i]);
    

  14.     }
    

  15. }
因为使用的是局部的ASCII所以要进行一个减去操作，编译后都是标准的字符集序号，所以要计算出来相对位置。
u8 i;：定义一个无符号 8 位整数 i，用于循环计数。

u8 c=0;：定义一个无符号 8 位整数 c，并初始化为 0。

c=charData-' ';：计算字符 charData 在字符集数组中的索引。charData-' ' 的作用是将字符的 ASCII 值减去空格字符的 ASCII 值（32），从而得到字符在字符集数组中的偏移量。

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 楼主| dongnanxibei 发表于 2025-2-19 09:35 | 显示全部楼层
for (i = 0; i < 16; i++)：循环 16 次，每次循环处理字符的一列像素数据。

if(i==8) Set_Dot_Addr(x, y+1);：当 i 等于 8 时，表示已经处理了字符的上半部分（8 行），此时需要切换到下半部分。调用 Set_Dot_Addr(x, y+1) 设置下半部分的起始地址。
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 楼主| dongnanxibei 发表于 2025-2-19 09:37 | 显示全部楼层
所以8*16的字符，是分为上下两部分的，先处理上面的8*8，再写入下面的8*8，这样就显示完整了，这也是为何当等于8的时候y向下移动一个序列。
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 楼主| dongnanxibei 发表于 2025-2-19 09:40 | 显示全部楼层
数据是按列写入，所以直接被写入的坐标x是从0到127，y是从0到7。
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发送到工地施工 发表于 2025-2-22 23:54 | 显示全部楼层
函数 WriteAscii8x16 用于在 OLED 屏幕上显示一个 8x16 的 ASCII 字符。
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捉虫天师 发表于 2025-2-25 14:44 | 显示全部楼层
这个主要是要知道是怎么显示的，是按列，8BIT是一列，比如128*32，那就是每列分成了四个8BIT。
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自动化陈稳 发表于 2025-4-27 01:10 | 显示全部楼层
您可以使用 I2C 或 SPI 接口来连接屏幕，具体取决于您的硬件设置。
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自动化陈稳 发表于 2025-4-27 01:21 | 显示全部楼层
如果您需要显示更复杂的字体或符号，可以使用更大的字体库或者通过外部库来支持更多字符。
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野玫瑰 发表于 2025-8-29 12:07 | 显示全部楼层
首先初始化 SSD1306，配置通信接口（I2C/SPI）。接着字符转为点阵数据，按 8x16 格式取模。然后设置显示起始页和列地址，通过通信协议发送命令和点阵数据，依次写入各字符，完成 8x16 字符在 OLED 上的显示。
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