S5PV210之LCD

注意：本人開發板是深圳九鼎創展科技的產品，7寸LCD分辨率是800*480。

 

#include "main.h"

#define GPF0CON (*(volatile unsigned long *)0xE0200120)

#define GPF1CON (*(volatile unsigned long *)0xE0200140)

#define GPF2CON (*(volatile unsigned long *)0xE0200160)

#define GPF3CON (*(volatile unsigned long *)0xE0200180)

#define GPD0CON (*(volatile unsigned long *)0xE02000A0)

#define GPD0DAT (*(volatile unsigned long *)0xE02000A4)

#define CLK_SRC1 (*(volatile unsigned long *)0xe0100204)

#define CLK_DIV1 (*(volatile unsigned long *)0xe0100304)

#define DISPLAY_CONTROL (*(volatile unsigned long *)0xe0107008)

#define VIDCON0 (*(volatile unsigned long *)0xF8000000)

#define VIDCON1 (*(volatile unsigned long *)0xF8000004)

#define VIDTCON2 (*(volatile unsigned long *)0xF8000018)

#define WINCON0 (*(volatile unsigned long *)0xF8000020)

#define WINCON2 (*(volatile unsigned long *)0xF8000028) 

#define VIDOSD0A (*(volatile unsigned long *)0xF8000040)

#define VIDOSD0B (*(volatile unsigned long *)0xF8000044)

#define VIDOSD0C (*(volatile unsigned long *)0xF8000048)

#define SHADOWCON (*(volatile unsigned long *)0xF8000034)  

#define VIDW00ADD0B0 (*(volatile unsigned long *)0xF80000A0)

#define VIDW00ADD1B0 (*(volatile unsigned long *)0xF80000D0)

#define VIDTCON0 (*(volatile unsigned long *)0xF8000010)

#define VIDTCON1 (*(volatile unsigned long *)0xF8000014)

//下面註釋的參數是本開發板廠家出廠參數

#define HSPW (40)                   // 1~40 DCLK

#define HBPD (10 - 1)              // 46

#define HFPD (240 - 1)            // 16  - 210  - 354

#define VSPW (20)                   // 1~20 DCLK

#define VBPD (10 - 1)              // 23

#define VFPD (30 - 1)              // 7  - 22 -  147

// FB地址（即顯存地址）

#define FB_ADDR (0x23000000)//隨便定，除了23，還可以25、27、

#define ROW (480)

#define COL   (800)

#define HOZVAL   (COL-1)

#define LINeval_r  (ROW-1)

#define XSIZE   COL

#define YSIZE   ROW

// 初始化LCD

void lcd_init(void)

{

// 配置引腳用於LCD功能

GPF0CON = 0x22222222;

GPF1CON = 0x22222222;

GPF2CON = 0x22222222;

GPF3CON = 0x22222222;

// 打開背光 GPD0_0（PWMTOUT0）

GPD0CON &= ~(0xf<<0);

GPD0CON |= (1<<0);                  // output mode

GPD0DAT &= ~(1<<0);             // output 0 to enable backlight

// 10: RGB=FIMD I80=FIMD ITU=FIMD

DISPLAY_CONTROL = 2<<0;

// bit[26~28]:使用RGB接口

// bit[18]:RGB 並行

// bit[2]:選擇時鐘源爲HCLK_DSYS=166MHz

VIDCON0 &= ~( (3<<26)|(1<<18)|(1<<2) );

// bit[1]:使能lcd控制器

// bit[0]:當前幀結束後使能lcd控制器

VIDCON0 |= ( (1<<0)|(1<<1) );

// bit[6]:選擇需要分頻

// bit[6~13]:分頻係數爲5，即VCLK = 166M/(4+1) = 33M

VIDCON0 |= 4<<6 | 1<<4;

// H43-HSD043I9W1.pdf(p13) 時序圖：VSYNC和HSYNC都是低脈衝

// s5pv210芯片手冊(p1207) 時序圖：VSYNC和HSYNC都是高脈衝有效，所以需要反轉

VIDCON1 |= 1<<5 | 1<<6;

// 設置時序

VIDTCON0 = VBPD<<16 | VFPD<<8 | VSPW<<0;

VIDTCON1 = HBPD<<16 | HFPD<<8 | HSPW<<0;

// 設置長寬(物理屏幕)

VIDTCON2 = (LINEVAL << 11) | (HOZVAL << 0);

// 設置window0

// bit[0]:使能

// bit[2~5]:24bpp（RGB888）

WINCON0 |= 1<<0;

WINCON0 &= ~(0xf << 2);

WINCON0 |= (0xB<<2) | (1<<15);

#define LeftTopX     0

#define LeftTopY     0

#define RightBotX   799//可以設置得顯存空間更大，1920，不過要看內存大小

#define RightBotY   479

// 設置window0的上下左右

// 設置的是顯存空間的大小

VIDOSD0A = (LeftTopX<<11) | (LeftTopY << 0);

VIDOSD0B = (RightBotX<<11) | (RightBotY << 0);

VIDOSD0C = (LINEVAL + 1) * (HOZVAL + 1);

// 設置fb的地址（映射空間地址）（像素需要3個點，不過要像素對齊，所以是乘以4）

VIDW00ADD0B0 = FB_ADDR;

VIDW00ADD1B0 = (((HOZVAL + 1)*4 + 0) * (LINEVAL + 1)) & (0xffffff);

// 使能channel 0傳輸數據

SHADOWCON = 0x1;

}

在編寫代碼中，發現S5PV210數據手冊中P1249出現一個小錯誤，現截圖提醒：