linux framebuffer 学习笔记二（程序用例）

1 程序流程图。
2  sample例子
HI_S32 TDE_DrawGraphicSample()
{
    HI_U32 u32Size;
    HI_S32 s32Fd;
    HI_U32 u32Times;
    HI_U8* pu8Screen;
    HI_U32 u32PhyAddr;
    HI_S32 s32Ret = -1;
    HI_U32 i = 0;
    struct fb_fix_screeninfo stFixInfo;
    struct fb_var_screeninfo stVarInfo;
    struct fb_bitfield stR32 = {10, 5, 0};
    struct fb_bitfield stG32 = {5, 5, 0};
    struct fb_bitfield stB32 = {0, 5, 0};
    struct fb_bitfield stA32 = {15, 1, 0};
    //HI_UNF_DISPLAY_SetEnable(HI_TRUE);
    /* 1. open tde device */
    HI_TDE2_Open();
    /* 2. framebuffer operation */
    s32Fd = open("/dev/fb0", O_RDWR);
    if (s32Fd == -1)
    {
        printf("open frame buffer device error\n");
        goto FB_OPEN_ERROR;
    }
    stVarInfo.xres_virtual         = SCREEN_WIDTH;
    stVarInfo.yres_virtual        = SCREEN_HEIGHT*2;
    stVarInfo.xres              = SCREEN_WIDTH;
    stVarInfo.yres              = SCREEN_HEIGHT;
    stVarInfo.activate          = FB_ACTIVATE_NOW;
    stVarInfo.bits_per_pixel    = 16;
    stVarInfo.xoffset = 0;
    stVarInfo.yoffset = 0;
    stVarInfo.red   = stR32;
    stVarInfo.green = stG32;
    stVarInfo.blu