ok6410的LCD裸机范例

/******************************************
        实验步骤
1.配置引脚功能，将其GPI、GPJ引脚设置为VD数据输出模式，及GPJ后几位设置成LCD时钟输出；
2.设置LCD时序值，初始化时序值。
    （1）需要初始化时序：VSPW、VBPD、LINEVAL、VFPD、HSPW、HBPB、HOZVAL、HFPD、
    CLKVAL（在LCD芯片手册中找到初始化时序图，然后找到对应的时序参数）
    （2）找到初始化这些时序信号相应的寄存器（在芯片手册中找到相应的寄存器，并对其初始化）
    （3）结合LCD芯片手册和时序图将对应参数的是设置出来
3.帧缓存初始化（帧缓冲指的是在内存中开辟出来的用来存储图像数据空间，并告知给LCD的CMA。）
    (1)设置窗口大小对应的寄存器
    (2)告诉ADM寄存器内存起始地址和大小
4.杂项初始化（）
5.画点
6.画线
7.绘制QQ图
8.单色显示
**********************************************************/
#define GPICON (*(volatile unsigned long *)0x7F008100)
#define GPJCON (*(volatile unsigned long *)0x7F008120)
#define MOFPCON (*(volatile unsigned long *)0x7410800C)
#define SPCON (*(volatile unsigned long *)0x7F0081A0)
#define VIDCON0 (*(volatile unsigned long *)0x77100000)
#define VIDCON1 (*(volatile unsigned long *)0x77100004)
#define VIDTCON0 (*(volatile unsigned long *)0x77100010)
#define VIDTCON1 (*(volatile unsigned long *)0x77100014)
#define VIDTCON2 (*(volatile unsigned long *)0x77100018)
#define WINCON0 (*(volatile unsigned long *)0x77100020)
#define VIDOSD0A (*(volatile unsigned long *)0x77100040)
#define VIDOSD0B (*(volatile unsigned long *)0x77100044)
#define VIDOSD0C (*(volatile unsigned long *)0x77100048)
#define VIDW00ADD0B0 (*(volatile unsigned long *)0x771000A0)
#define VIDW00ADD1B0 (*(volatile unsigned long *)0x771000D0)

#define VSPW 9
#define VBPD 1
#define LINEVAL 271
#define VFPD 1
//#define CLKVAL 4   //10 = 100/((CLKVAL+1)*2)
#define HSPW 40
#define HBPD 1
#define HOZVAL 479
#define HFPD 1

#define LeftTopX 0
#define LeftTopY 0
#define RightBotX 479
#define RightBotY 271

#define FRAME_BUFFER 0x54000000

extern unsigned char bmp[];/* 导出的时候切记不要包含图像头数据！！！！！！ */

void lcd_port_init()
{
    GPICON = 0xaaaaaaaa;
    GPJCON = 0xaaaaaaaa;
}
void lcd_contral_init()
{
    MOFPCON = <<;   /* 这一位必须设置为0 */
    SPCON = 0x01;    /* RGB模式下必须设置为1 */

    VIDCON0 = (<<)|(<<)|(<<); /* 禁止视频输出和控制信号 选择视频时钟源 确定VCLK和CLKVAL[7:0]的值[VCLK=视频时钟源/（CLKVAL+1）] */
    VIDCON1 = (<<)|(<<);

    VIDTCON0 = (VBPD<<)|(VFPD<<)|(VSPW<<); /* 时钟初始化 */
    VIDTCON1 = (HBPD<<)|(HFPD<<)|(HSPW<<);
    VIDTCON2 = (LINEVAL<<)|(HOZVAL<<);

    WINCON0 = (<<)|(0xb<<)|(<<);   /* 禁止视频输出和视频控制信号 选择BPP图像窗口模式（24bpp） 打开半字交换控制位 */

    VIDOSD0A = (LeftTopX<<)|(LeftTopY<<);  /* 设置视频窗口0的位置 */
    VIDOSD0B = (RightBotX<<)|(RightBotY<<);
    VIDOSD0C = (LINEVAL+)|(HOZVAL+);  /* 设置视频窗口0的尺寸 */

    VIDW00ADD0B0 = FRAME_BUFFER;         /* 设置缓存区开始地址 */
    VIDW00ADD1B0 = ((FRAME_BUFFER+(HOZVAL+)**(LINEVAL+)))&(0xffffff); /* 设置缓存区结束地址 ？？？？*/
}

void lcd_init()
{
    lcd_port_init();
    lcd_contral_init();

    //打开LCD电源
}

void point(int row, int col, int color)
{
    int red, green, blue;
    unsigned long *point = (unsigned long*)FRAME_BUFFER;
    red = (color>>) & 0xff;
    green = (color>>) & 0xff;
    blue = (color>>) & 0xff;
    *(point + row* + col) = (green<<) | (blue<<) | red; /* 具体不知原因 试出来的 */

}

void paint_bmp(const unsigned char bmp[])
{
    int i,j;
    unsigned char *p = (unsigned char *)bmp;
    int blue, green,red;
    int color;

    for(i=;i<;i++)  /* 必须和导出的尺寸一致！！！ */
    {
        for(j=;j<;j++)
        {
            red = *p++;    /* 必须和导出的颜色顺序一模一样！！！！！！ */
            blue = *p++;
            green = *p++;

            color = (red<<)|(green<<)|(blue<<); 

            point(i,j,color);
        }
    }
}

void lcd_test()
{
    int y;
    for(y=;y<;y++)
        point(,y,0xFF0000);

    paint_bmp(bmp);
}