S5PV210之LCD

来源：互联网发布：linux 修改时区编辑：程序博客网时间：2024/06/02 05:46

注意：本人开发板是深圳九鼎创展科技的产品，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)

//下面注释的参数是本开发板厂家出厂参数

#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（即显存地址）

#define FB_ADDR (0x23000000)//随便定，除了23，还可以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)

{

// 配置引脚用于LCD功能

GPF0CON = 0x22222222;

GPF1CON = 0x22222222;

GPF2CON = 0x22222222;

GPF3CON = 0x22222222;

// 打开背光 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 并行

// bit[2]:选择时钟源为HCLK_DSYS=166MHz

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

// bit[1]:使能lcd控制器

// bit[0]:当前帧结束后使能lcd控制器

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

// bit[6]:选择需要分频

// bit[6~13]:分频系数为5，即VCLK = 166M/(4+1) = 33M

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

// H43-HSD043I9W1.pdf(p13) 时序图：VSYNC和HSYNC都是低脉冲

// s5pv210芯片手册(p1207) 时序图：VSYNC和HSYNC都是高脉冲有效，所以需要反转

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

// 设置时序

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

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

// 设置长宽(物理屏幕)

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

// 设置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//可以设置得显存空间更大，1920，不过要看内存大小

#define RightBotY 479

// 设置window0的上下左右

// 设置的是显存空间的大小

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

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

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

// 设置fb的地址（映射空间地址）（像素需要3个点，不过要像素对齐，所以是乘以4）

VIDW00ADD0B0 = FB_ADDR;

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

// 使能channel 0传输数据

SHADOWCON = 0x1;

}

在编写代码中，发现S5PV210数据手册中P1249出现一个小错误，现截图提醒：

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