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51单片机控制st7920显示图片 源程序PCB文件

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ID:730009 发表于 2022-3-26 10:59 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
  1. #ifndef _LCD12864BU_H_
  2. #define _LCD12864BU_H_
  3. /*****液晶显示器的端口定义*****/
  4. #define LCD_data  P0             //数据口
  5. sbit LCD_RS  =  P2^0;            //寄存器选择输入
  6. sbit LCD_RW  =  P2^1;            //液晶读/写控制
  7. sbit LCD_EN  =  P2^2;            //液晶使能控制
  8. sbit LCD_PSB =  P3^6;            //串/并方式控制
  9. sbit RST_12864 = P2^5;
  10. #define uchar unsigned char
  11. #define uint  unsigned int

  13.         unsigned char code pictrue1[1024]={
  14.                 /*--  调入了一幅图像：E:\Desktop\冰.bmp  --*/
  15. /*--  宽度x高度=128x64  --*/
  16. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  17. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  18. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  19. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  20. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  21. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  22. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  23. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  24. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0x7B,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  25. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  26. 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x57,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  27. 0xFF,0xFF,0xFF,0xFF,0xF3,0xFF,0xFF,0xFF,0xF8,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  28. 0xFF,0xFF,0x3F,0xFF,0xCC,0xFF,0xFF,0xFF,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  29. 0xFF,0xFC,0xDF,0xFF,0xE1,0xFF,0xFF,0xF8,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
  30. 0xFF,0xFD,0x7C,0x00,0x1E,0xFF,0xFF,0xF0,0x00,0x00,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,
  31. 0xFF,0xFF,0xF0,0x00,0x0E,0xFF,0xFF,0xF0,0x00,0x00,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,
  32. 0xFF,0xFF,0xE0,0x00,0x05,0xFF,0xFF,0xC2,0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,
  33. 0xFF,0xFF,0xC0,0x01,0x81,0xFF,0xFF,0x80,0x00,0x00,0x02,0x20,0xFF,0xFF,0xFF,0xFF,
  34. 0xFF,0xFF,0x80,0x28,0x09,0xDE,0x01,0xC0,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  35. 0x00,0x04,0x00,0x9F,0xFA,0xE0,0x01,0xC0,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  36. 0x00,0x06,0x02,0x70,0x06,0x4F,0x03,0xC0,0x00,0x00,0x09,0x00,0xFF,0xFF,0xFF,0xFF,
  37. 0x00,0x0C,0x07,0x88,0x09,0xFF,0x83,0xC2,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  38. 0x00,0x0C,0x0F,0x20,0x00,0xFF,0x83,0xB8,0x00,0x00,0x00,0x80,0xFF,0xFF,0xFF,0xFF,
  39. 0x00,0x18,0x1E,0x00,0x01,0x7F,0x07,0x80,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  40. 0x00,0x18,0x3F,0x00,0x04,0x3F,0x87,0x00,0x00,0x80,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  41. 0x00,0x18,0x38,0x7C,0x0F,0x3E,0x07,0x00,0x00,0x00,0x00,0x40,0xFF,0xFF,0xFF,0xFF,
  42. 0x00,0x18,0x78,0xE4,0x01,0x7F,0x07,0x00,0x00,0x00,0x00,0x40,0xFF,0xFF,0xFF,0xFF,
  43. 0x00,0x18,0x75,0xE6,0x05,0xDC,0x06,0x0C,0x00,0x30,0x04,0x40,0xFF,0xFF,0xFF,0xFF,
  44. 0x00,0x10,0x3B,0xFE,0x05,0x98,0x06,0x0C,0x00,0x00,0x3F,0xC0,0xFF,0xFF,0xFF,0xFF,
  45. 0x00,0x10,0x63,0xE4,0x7D,0x9C,0x02,0x00,0x00,0x00,0x7F,0xC0,0xFF,0xFF,0xFF,0xFF,
  46. 0x00,0x10,0xE3,0xE4,0x67,0x98,0x02,0x00,0x00,0xC0,0x3F,0xC0,0xFF,0xFF,0xFF,0xFF,
  47. 0x00,0x10,0xEB,0xF8,0x07,0x98,0x03,0x00,0x00,0xC0,0x7F,0xC0,0xFF,0xFF,0xFF,0xFF,
  48. 0x00,0x10,0xE3,0xF1,0x13,0x98,0x01,0x80,0x00,0x00,0x7F,0x80,0xFF,0xFF,0xFF,0xFF,
  49. 0x00,0x10,0xE3,0xE0,0x01,0x90,0x01,0xF0,0x00,0x00,0x7F,0x80,0xFF,0xFF,0xFF,0xFF,
  50. 0x00,0x38,0x61,0xC0,0x00,0x10,0x00,0xFC,0x00,0x00,0x3F,0x80,0xFF,0xFF,0xFF,0xFF,
  51. 0x00,0x3C,0x78,0x00,0x00,0x50,0x00,0x7F,0x00,0x00,0x3F,0x00,0xFF,0xFF,0xFF,0xFF,
  52. 0x00,0x7C,0x70,0x00,0x00,0xB0,0x00,0x3F,0xFF,0x7C,0x7E,0x00,0xFF,0xFF,0xFF,0xFF,
  53. 0x00,0x3E,0x38,0x00,0x01,0x60,0x00,0x3F,0xFF,0xFF,0xFC,0x00,0xFF,0xFF,0xFF,0xFF,
  54. 0x00,0x7E,0x1F,0x20,0x3D,0xC0,0x00,0x7F,0xFF,0xFF,0xF8,0x00,0xFF,0xFF,0xFF,0xFF,
  55. 0x00,0xFE,0x1F,0xE0,0x07,0xC0,0x00,0x7F,0xFF,0xFF,0xE0,0x00,0xFF,0xFF,0xFF,0xFF,
  56. 0x00,0xFF,0x07,0xFF,0xFF,0x80,0x00,0x7F,0xFF,0xFF,0x80,0x00,0xFF,0xFF,0xFF,0xFF,
  57. 0x00,0xFF,0x83,0xFF,0xFF,0x00,0x00,0x7F,0xFF,0xFF,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  58. 0x01,0xFF,0x80,0x7F,0xF8,0x00,0x00,0x3F,0xFF,0xFF,0x80,0x00,0xFF,0xFF,0xFF,0xFF,
  59. 0x01,0xF8,0x00,0x00,0x81,0x80,0x00,0x1F,0xFF,0xFF,0xC0,0x00,0xFF,0xFF,0xFF,0xFF,
  60. 0x01,0xF8,0x00,0x01,0xE1,0x00,0x00,0x07,0xC0,0x3F,0xC0,0x00,0xFF,0xFF,0xFF,0xFF,
  61. 0x03,0xF8,0x00,0x01,0xFF,0x00,0x00,0x03,0xD8,0x3F,0xC0,0x00,0xFF,0xFF,0xFF,0xFF,
  62. 0x00,0xE8,0xFE,0x3F,0xFE,0x00,0x00,0x03,0xC8,0x3F,0xC0,0x00,0xFF,0xFF,0xFF,0xFF,
  63. 0x00,0xF0,0xFF,0xFF,0xFE,0x00,0x00,0x03,0x90,0x1F,0xC0,0x00,0xFF,0xFF,0xFF,0xFF,
  64. 0x00,0x00,0xFF,0xFF,0xFC,0x00,0x00,0x03,0xA0,0x3E,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  65. 0x00,0x01,0x7F,0xFF,0xFC,0x00,0x00,0x01,0x80,0x3C,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  66. 0x00,0x00,0x7F,0xFF,0xFC,0x00,0x00,0x01,0xC0,0x3C,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  67. 0x00,0x00,0xFF,0xFF,0xFC,0x00,0x00,0x01,0xFC,0xFC,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  68. 0x00,0x00,0xBF,0xFF,0xFC,0x00,0x00,0x00,0xFF,0xF8,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  69. 0x00,0x00,0x3F,0xF7,0xF8,0x00,0x00,0x00,0xFF,0xC0,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  70. 0x00,0x00,0x3F,0xC1,0xF8,0x00,0x00,0x00,0xFF,0x10,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  71. 0x00,0x00,0x3F,0x81,0xF8,0x00,0x00,0x00,0x79,0xF8,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  72. 0x00,0x00,0x3F,0x80,0x74,0x00,0x00,0x00,0x01,0xF0,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  73. 0x00,0x00,0x5F,0x41,0x98,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  74. 0x00,0x00,0x3F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  75. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  76. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  77. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  78. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,
  79. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF};//\Desktop\冰.bmp0


  82. /****************************************************************************
  83. 函数功能:LCD延时程序
  84. 入口参数:del
  85. 出口参数:
  86. ****************************************************************************/
  87. //忙检测，若忙则等待，最长等待时间为60ms
  88. //延时子程序
  89. void delay_12864(unsigned int del){
  90. unsigned int i;
  91. for(i = 0; i < del; i++){; }
  92. }
  93. /****************************************************************************
  94. 状态检查，LCD是否忙
  95. *****************************************************************************/
  96. //void busychk_12864(void){
  97. //unsigned int timeout = 0;
  98. //  LCD_EN  = 0;
  99. //  LCD_RS = 0;
  100. //  LCD_RW  = 1;
  101. //  LCD_EN  = 1;
  102. //while(( LCD_data & 0x80)&& ++timeout != 0);  //忙状态检测，等待超时时间为60ms
  103. //  LCD_EN  = 0;
  104. //}
  105. /*****************************************************************************
  106. 函数功能:写命令到LCD程序，RS(DI)=L,RW=L,EN=H，即来一个脉冲写一次
  107. 入口参数:cmd
  108. 出口参数:
  109. *****************************************************************************/
  110. //写命令子程序
  111. void wrtcom_12864(unsigned char com){
  112. //busychk_12864();
  113.   LCD_EN  = 0;
  114.   LCD_RS = 0;
  115.   LCD_RW  = 0;
  116. LCD_data = com;
  117.   LCD_EN  = 1;
  118. delay_12864(50);    //使能延时!!!注意这里，如果是较快的CPU应该延时久一些
  119.   LCD_EN  = 0;  
  120. }
  121. ////读数据子程序
  122. //unsigned char reddat_12864(void){
  123. //unsigned char temp;
  124. //busychk_12864();
  125. //  LCD_EN  = 0;
  126. // LCD_data = 0xff;  //IO口置高电平，读引脚
  127. //  LCD_RS = 1;
  128. //  LCD_RW  = 1;
  129. //  LCD_EN  = 1;
  130. //delay_12864(50);    //使能延时!!!注意这里，如果是较快的CPU应该延时久一些
  131. //temp =  LCD_data;
  132. //return temp;
  133. //}
  134. //写数据子程序
  135. void wrtdat_12864(unsigned char dat){
  136. //busychk_12864();
  137.   LCD_EN  = 0;
  138.   LCD_RS = 1;
  139.   LCD_RW  = 0;
  140.   LCD_EN  = 1;
  141. LCD_data = dat;
  142. delay_12864(50);    //使能延时!!!注意这里，如果是较快的CPU应该延时久一些
  143.   LCD_EN  = 0;  
  144. }

  146. /*****************************************************************************
  147. 函数功能:LCD初始化程序
  148. 入口参数:
  149. 出口参数:
  150. *****************************************************************************/
  151. //初始化12864子函数
  152. void initial_12864(void){
  153. delay_12864(40000);
  154. RST_12864 = 1;
  155. RST_12864 = 0;    //复位
  156. delay_12864(500);
  157. RST_12864 = 1;
  158. wrtcom_12864(0x30);   //设置为基本指令集动作
  159. delay_12864(100);
  160. wrtcom_12864(0x30);   //设置为基本指令集动作
  161. delay_12864(37);
  162. wrtcom_12864(0x08);   //设置显示、光标、闪烁全关。
  163. delay_12864(100);
  164. wrtcom_12864(0x01);   //清屏，并且DDRAM数据指针清零
  165. delay_12864(100000);
  166. wrtcom_12864(0x06);   //进入模式设置
  167. wrtcom_12864(0x0c);   //开显示
  168. }


  171. void Clear12864Screen()

  173. {

  175.    unsigned char i,j;

  177.   wrtcom_12864(0x34);//功能设定：8位控制方式，使用扩充指令

  179.   wrtcom_12864(0x36);//使用扩充指令，绘图显示控制

  181.    for(i=0;i<32;i++)

  183. //ST7920可控制256*32点阵（32行256列），而12864液晶实际的行地址只有0-31行,

  185. //12864液晶的32-63行的行是0-31行地址从第128列划分一半出来的,所以分为上下两半屏，

  187. //也就是说第0行和第32行同属一行，行地址相同;第1行和第33行同属一行，以此类推

  189.    {                           

  191.          wrtcom_12864(0x80|i);//写行地址（垂直地址）

  193.          wrtcom_12864(0x80);//写列地址（水平地址）

  195.           for(j=0;j<32;j++)

  197.                     wrtdat_12864(0x00);//清屏

  199.    }

  201. }

  203. void LCD12864DisplayPictrue(unsigned char y,unsigned char x,

  205.                               unsigned char px,unsigned char py, unsigned char *pp)

  207. //y-起始行（数值0-63），x-起始列（16位宽，数值0-7），

  209. //px-图片宽度，py-图片高度，pp-指针指向图片数组

  211. //因为上下屏的地址不连续，要在任意位置显示完整的图像，处理起来比较繁琐

  213. {

  215.    unsigned char i,j,k;

  217.    Clear12864Screen();//清屏

  219.    if(y<32)//如果起始行在上半屏

  221.    {

  223.           k=32-y;//算出上半屏的行数

  225.           for(i=0;i<k;i++,y++)//上半屏行数

  227.           {

  229.                      wrtcom_12864(0x80|y);//写行地址（垂直地址）

  231.                      wrtcom_12864(0x80|x);//写列地址（水平地址）

  233.                      for(j=0;j<px/8;j++)

  235.                               wrtdat_12864(pp[i*px/8+j]);//写图片数据

  237.           }

  239.           y=0;//下半屏起始行，接上半屏继续写数据

  241.           for(;i<py;i++,y++)//下半屏剩下的行数

  243.           {

  245.                      wrtcom_12864(0x80|y);//写行地址（垂直地址）

  247.                      wrtcom_12864(0x80|(8+x));//写列地址（水平地址）

  249.                      for(j=0;j<px/8;j++)

  251.                               wrtdat_12864(pp[i*px/8+j]);//写图片数据

  253.           }

  255.    }

  257.    else //如果起始行在下半屏

  259.    {

  261.           for(i=0;i<py;i++,y++)//行数

  263.           {

  265.                      wrtcom_12864(0x80|(y-32));//写行地址（垂直地址）

  267.                      wrtcom_12864(0x80|(8+x));//写列地址（水平地址）

  269.                      for(j=0;j<px/8;j++)

  271.                                wrtdat_12864(pp[i*px/8+j]);//写图片数据

  273.           }

  275.    }

  277. }   


  280. #endif
复制代码
  1. #include < reg52.h>
  2. #include < lcd12864bu.h>

  4. void main()
  5. {
  6.             initial_12864();       //初始化12864
  7.                                  LCD12864DisplayPictrue(0,0,128,64,pictrue1);//显示

  9.         while(1);
  10. }
复制代码

Keil代码下载: 冰.7z (17.44 KB, 下载次数: 21)
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沙发
ID:679480 发表于 2023-3-28 23:32 | 只看该作者
问一下，这个屏（ST7920）显示图片的时候，当图片比较小，不满128X64像素，显示完图片后其它区域就会乱码，怎么回事？显示前清屏了也不行
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板凳
ID:1042619 发表于 2023-3-29 08:21 | 只看该作者
用下面的完全正确验证过的实战程序测试下
第36个实战程序
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