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OK6410裸机4.3寸LCD显示问题求助

2019-07-16 07:55发布

站内问答 / 嵌入式Linux
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如图所示，选取了一副220*205的图片，16-BPP输出，但是在屏幕上没有完全显示，查阅了许多博客，根据他们的配置做了许多修改依然没有解决问题，感觉对LCD的配置还没有理解到位，希望小伙伴们可以指点下，附件有代码，有兴趣的可以帮忙看看哪里配置还存在缺陷，感激不尽。 原图
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代码 图片.rar (212.81 KB, 下载次数: 19)


  1. #define GPICON (*(volatile unsigned long *)0x7F008100)        //LCD Data Port VD[0:15]
  2. #define GPJCON (*(volatile unsigned long *)0x7F008120)        //LCD Data Port VD[16:23]

  4. #define VIDCON0 (*(volatile unsigned long *)0x77100000)        //Video control 0 register
  5. #define VIDCON1 (*(volatile unsigned long *)0x77100004)        //Video control 1 register
  6. #define VIDCON2 (*(volatile unsigned long *)0x77100008)        //Video control 2 register

  8. #define VIDTCON0 (*(volatile unsigned long *)0x77100010)    //Video time control 0 register
  9. #define VIDTCON1 (*(volatile unsigned long *)0x77100014)    //Video time control 1 register   
  10. #define VIDTCON2 (*(volatile unsigned long *)0x77100018)    //Video time control 2 register

  12. #define WINCON0 (*(volatile unsigned long *)0x77100020)        //Window control 0 register

  14. #define VIDOSD0A (*(volatile unsigned long *)0x77100040)    //Video Window 0's position control register
  15. #define VIDOSD0B (*(volatile unsigned long *)0x77100044)    //Video Window 0's position control register
  16. #define VIDOSD0C (*(volatile unsigned long *)0x77100048)    //Video Window 0's size control register

  18. #define VIDW00ADD0B0 (*(volatile unsigned long *)0x771000A0)        //Window 0's buffer start address register, buffer 0
  19. #define VIDW00ADD1B0 (*(volatile unsigned long *)0x771000D0)        //Window 0's buffer end address register, buffer 0
  20. #define VIDW00ADD2    (*(volatile unsigned long *)0x77100100)        //Window 0's buffer size register

  22. #define WPALCON    (*(volatile unsigned long *)0x771001A0)                //Window Palette control register

  24. #define MIFPCON    (*(volatile unsigned long *)0x7410800C)        //Modem Interface Port Control register
  25. #define SPCON      (*(volatile unsigned long *)0x7F0081A0)        //Special Port Control Register

  27. #define WIN0MAP        (*(volatile unsigned long *)0x77100180)        //Window'0 color control


  30. #define VIDOUT_RGB_I_F                 (3<<26)
  31. #define PNERMODE_RGB_PAR        (3<<17)
  32. #define CLKSEL_F_HCLK                (3<<2)
  33. #define CLKSEL_F_EXT                (3<<2)
  34. #define DISPLAY_ON                        (3<<0)
  35. #define DISPALY_OFF                        (3<<0)

  37. #define IVCLK_FALLING                (1<<7)
  38. #define IHSYNC                                (1<<6)
  39. #define IVSYNC                                (1<<5)
  40. #define IVDEN                                (1<<4)


  43. #define VSPW 9
  44. #define VBPD 1
  45. #define VFPD 1
  46. #define CLKVAL_HCLK 13
  47. #define CLKVAL_EXT 2
  48. #define HSPW 40
  49. #define HBPD 1
  50. #define HFPD 1

  52. #define LeftTopX 0
  53. #define LeftTopY 0
  54. #define RightBotX 480
  55. #define RightBotY 272

  57. #define LCD_XSIZE 480//水平分辨率
  58. #define LCD_YSIZE        272//垂直分辨率

  60. #define LINEVAL 271
  61. #define HOZVAL 479

  63. #define PAGEWIDTH        ( (HOZVAL+1)*2 )
  64. #define OFFSIZE        0

  66. volatile unsigned int LCDBUFFER[LCD_YSIZE][LCD_XSIZE] = {0};

  68. typedef unsigned int U32;
  69. typedef unsigned short U16;
  70. typedef unsigned char U8;

  72. void lcd_port_init()
  73. {
  74.     GPICON = 0xAAAAAAAA;
  75.     GPJCON = 0xAAAAAA;       
  76. }

  78. void lcd_control_init()
  79. {       
  80.     MIFPCON &= ~(1<<3);   /* Normal mode */
  81.     SPCON &= ~(0x3);
  82.     SPCON |= 0x1;       /* RGB I/F style */
  83.    
  84.     WPALCON |=  (3<<1); /*16-bit data format*/
  85.    
  86.         /*Clock and Output Mode Configuration*/
  87.    
  88.         /*Clock Source  -->  HCLK*/       
  89. #if 1
  90.     VIDCON0 &= ~( DISPALY_OFF | VIDOUT_RGB_I_F | PNERMODE_RGB_PAR | CLKSEL_F_HCLK | (0XFF<<6) );        //RGB I/F,vclk = HCLK / (CLKVAL+1) = 133/14 = 9.5MHz
  91.                 VIDCON0 |= ( (1<<4) | (CLKVAL_HCLK<<6) );        //diplay on,CLKVAL = 13+1
  92. #endif  
  93.         /*Clock Source  -->  Ext Clock Input */
  94. #if 0
  95.     VIDCON0 &= ~( VIDOUT_RGB_I_F | PNERMODE_RGB_PAR | (0XFF<<6) );  //RGB I/F,vclk== 27MHz Ext Clock input / (CLKVAL+1) = 27/3 = 9MHz */
  96.     VIDCON0 |= (DISPLAY_ON | (1<<4) | (CLKVAL_EXT<<6) | CLKSEL_F_EXT );    //diplay on,CLKVAL = 3
  97. #endif
  98.      
  99.     /*Clock polarity and active edge configuration*/
  100.     VIDCON1 &= ~( (IVCLK_FALLING) | (IVDEN) );        //falling edge,output enable
  101.     VIDCON1 |= ( (IHSYNC) | (IVSYNC) );        //HSYNC High, VSYNC High, 1 = inverted
  102.        
  103.         /*Clock time configuration*/
  104.     VIDTCON0 = (VBPD << 16) | (VFPD << 8) | (VSPW << 0); /*VBPD=1, VFPD=1, VFPD=9*/
  105.     VIDTCON1 = (HBPD << 16) | (HFPD << 8) | (HSPW << 0);        /*HBPD=1, HBPD=1, HSPW=40*/
  106.     VIDTCON2 = (LINEVAL << 11) | (HOZVAL << 0);        /*LINEVAL = 272-1, HOZVAL = 480-1*/

  108.         /*Window 0 configuration*/
  109.     WINCON0 &= ~(0xf<< 2);
  110.     WINCON0 |= (0x5<<2) | (1<<0);        //enable VIDEO control signal output,Bits Per Pixel = 16-BPP      
  111.    
  112.         /*Window 0 position  configuration*/
  113.     VIDOSD0A =(LeftTopX << 11) | (LeftTopY << 0);        /*top left orignal coordinate = (0,0)*/
  114.     VIDOSD0B =(RightBotX << 11) | (RightBotY << 0);        /*low right orignal coordinate = (480,272)*/
  115.     VIDOSD0C = (LINEVAL + 1) * (HOZVAL + 1);        /*Height * Width (Number of Word),Window Size = 272*480*/
  116.    
  117.         /* Window 0’s buffer configuration*/
  118.     VIDW00ADD0B0 = ( (((U32)LCDBUFFER>>24)<<24) | ((U32)LCDBUFFER&0xffffff) );
  119.     VIDW00ADD1B0 =  ( (U32)LCDBUFFER + ( (PAGEWIDTH + OFFSIZE) * (LINEVAL+1) ) ) & (0xffffff);        /*VBASEL = VBASEU + (PAGEWIDTH+OFFSIZE) x (LINEVAL+1)*/
  120.     VIDW00ADD2 =  (OFFSIZE<<13) | PAGEWIDTH ;
  121.     /*screen offset size (the number of byte) = 0,
  122.     creen page width (the number of byte) */
  123. }


  126. void lcd_init()
  127. {       
  128.     lcd_port_init();
  129.     lcd_control_init();

  131.                 VIDCON0 |= (3<<0);       
  132. }

  134. void point(unsigned int x,unsigned int y,unsigned int color)
  135. {
  136.     unsigned int red, green, blue;
  137.    
  138.     red = (color>>19) & 0x1f;       
  139.     green = (color>>10) & 0x3f;       
  140.     blue = (color>>3) & 0x1f;       
  141.     LCDBUFFER[x][y] = (unsigned short)((red<<11)|(green<<5)|blue);       
  142. }

  144. void Paint_Bmp(U16 x0,U16 y0,U16 wide,U16 high,const U8 *bmp)
  145. {
  146.     U16 x,y;
  147.     U16 c;
  148.     U32 p = 0;

  150.     for( y = y0 ; y < y0+high ; y++ )
  151.     {
  152.             for( x = x0 ; x < x0+wide ; x++ )
  153.             {
  154.                 c = bmp[p] | (bmp[p+1]<<8);                                                                               
  155.             
  156.             if ( ( x < 480) && ( y < 272) )
  157.                 LCDBUFFER[y][x] = c ;
  158.                 
  159.             p = p + 2 ;       
  160.             }
  161.     }
  162. }

  164. void clearSrc(unsigned int color)
  165. {
  166.     //WIN0MAP = (1<<24) | (color&0xffffff);        //fill screen with color
  167. }

  169. const unsigned char gImage_QQ[90200];

  171. void lcd_test()
  172. {
  173.     int x;
  174.    
  175.     Paint_Bmp(0,0,220,205,gImage_QQ);
  176.    
  177. }

  179. //http://www.114la.com/other/rgb.htm

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简单沉默
2019-07-16 12:05
帮助顶，顶起。。。。。。。。。。。

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