0V2640摄像头开窗问题

以前用0V2640的时候，使用的是正点原子的初始化，遇到过开窗问题，问题如下：

1、正点原子的开窗函数主要是以下四个：

OV2640_Window_Set(0,0,1800,1200); //传感器窗口
OV2640_ImageSize_Set(1600,1200); //图像尺寸
OV2640_ImageWin_Set(0,0,1600,1200); //图像窗口

OV2640_OutSize_Set(120,120); //图片输出大小

但是经过测试发现，无论如何调整，输出图片都不是按照比例缩放，都是从窗口中截取的像素点，而不是调用它内部的dsp缩放，导致视野范围太小，而且会有视野会偏离中心。

2、问题解决：是因为正点原子的初始化程序的 0x50 寄存器被初始化两次，第一次初始化为 0x82 ，第二次初始化为0x00，所以初始化无效。更改如下：（拿走不谢）

//OV2640 UXGA初始化寄存器序列表
//此模式下帧率为15帧
//UXGA(1600*1200)
const u8 ov2640_uxga_init_reg_tbl[][2]=
{   0xff, 0x00,0x2c, 0xff,0x2e, 0xdf,0xff, 0x01,0x3c, 0x32,//0x11, 0x00,0x09, 0x02,0x04, 0xD8,//水平镜像,垂直翻转0x13, 0xe5,0x14, 0x48,0x2c, 0x0c,0x33, 0x78,0x3a, 0x33,0x3b, 0xfB,//0x3e, 0x00,0x43, 0x11,0x16, 0x10,//0x39, 0x92,//0x35, 0xda,0x22, 0x1a,0x37, 0xc3,0x23, 0x00,0x34, 0xc0,0x36, 0x1a,0x06, 0x88,0x07, 0xc0,0x0d, 0x87,0x0e, 0x41,0x4c, 0x00,0x48, 0x00,0x5B, 0x00,0x42, 0x03,//0x4a, 0x81,0x21, 0x99,//0x24, 0x40,0x25, 0x38,0x26, 0x82,0x5c, 0x00,0x63, 0x00,0x46, 0x00,0x0c, 0x3c,//0x61, 0x70,0x62, 0x80,0x7c, 0x05,//0x20, 0x80,0x28, 0x30,0x6c, 0x00,0x6d, 0x80,0x6e, 0x00,0x70, 0x02,0x71, 0x94,0x73, 0xc1, 0x3d, 0x34, 0x5a, 0x57,//0x12, 0x00,//UXGA 1600*12000x17, 0x11,0x18, 0x75,0x19, 0x01,0x1a, 0x97,0x32, 0x36,0x03, 0x0f, 0x37, 0x40,// 0x4f, 0xca,0x50, 0xa8,0x5a, 0x23,0x6d, 0x00,0x6d, 0x38,//0xff, 0x00,0xe5, 0x7f,0xf9, 0xc0,0x41, 0x24,0xe0, 0x14,0x76, 0xff,0x33, 0xa0,0x42, 0x20,0x43, 0x18,0x4c, 0x00,0x87, 0xd5,0x88, 0x3f,0xd7, 0x03,0xd9, 0x10,0xd3, 0x82,//0xc8, 0x08,0xc9, 0x80,//0x7c, 0x00,0x7d, 0x00,0x7c, 0x03,0x7d, 0x48,0x7d, 0x48,0x7c, 0x08,0x7d, 0x20,0x7d, 0x10,0x7d, 0x0e,//0x90, 0x00,0x91, 0x0e,0x91, 0x1a,0x91, 0x31,0x91, 0x5a,0x91, 0x69,0x91, 0x75,0x91, 0x7e,0x91, 0x88,0x91, 0x8f,0x91, 0x96,0x91, 0xa3,0x91, 0xaf,0x91, 0xc4,0x91, 0xd7,0x91, 0xe8,0x91, 0x20,//0x92, 0x00,0x93, 0x06,0x93, 0xe3,0x93, 0x05,0x93, 0x05,0x93, 0x00,0x93, 0x04,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,//0x96, 0x00,0x97, 0x08,0x97, 0x19,0x97, 0x02,0x97, 0x0c,0x97, 0x24,0x97, 0x30,0x97, 0x28,0x97, 0x26,0x97, 0x02,0x97, 0x98,0x97, 0x80,0x97, 0x00,0x97, 0x00,//0xc3, 0xef,0xa4, 0x00,0xa8, 0x00,0xc5, 0x11,0xc6, 0x51,0xbf, 0x80,0xc7, 0x10,0xb6, 0x66,0xb8, 0xA5,0xb7, 0x64,0xb9, 0x7C,0xb3, 0xaf,0xb4, 0x97,0xb5, 0xFF,0xb0, 0xC5,0xb1, 0x94,0xb2, 0x0f,0xc4, 0x5c,//0xc0, 0xc8,0xc1, 0x96,0x8c, 0x00,0x86, 0x3d,//   0x50, 0x00,0x50, 0x92, //更改0x51, 0x90,0x52, 0x2c,0x53, 0x00,0x54, 0x00,0x55, 0x88,0x5a, 0x90,0x5b, 0x2C,0x5c, 0x05,0xd3, 0x02,//auto设置要小心//0xc3, 0xed,0x7f, 0x00,0xda, 0x09,0xe5, 0x1f,0xe1, 0x67,0xe0, 0x00,0xdd, 0x7f,0x05, 0x00,
};
//OV2640 SVGA初始化寄存器序列表
//此模式下,帧率可以达到30帧
//SVGA 800*600
const u8 ov2640_svga_init_reg_tbl[][2]=
{    0xff, 0x00,0x2c, 0xff,0x2e, 0xdf,0xff, 0x01,0x3c, 0x32,//0x11, 0x80,0x09, 0x02,0x04, 0xD8,//水平镜像,垂直翻转0x13, 0xe5,0x14, 0x48,0x2c, 0x0c,0x33, 0x78,0x3a, 0x33,0x3b, 0xfB,//0x3e, 0x00,0x43, 0x11,0x16, 0x10,//0x39, 0x92,//0x35, 0xda,0x22, 0x1a,0x37, 0xc3,0x23, 0x00,0x34, 0xc0,0x36, 0x1a,0x06, 0x88,0x07, 0xc0,0x0d, 0x87,0x0e, 0x41,0x4c, 0x00,0x48, 0x00,0x5B, 0x00,0x42, 0x03,//0x4a, 0x81,0x21, 0x99,//0x24, 0x40,0x25, 0x38,0x26, 0x82,0x5c, 0x00,0x63, 0x00,0x46, 0x22,0x0c, 0x3c,//0x61, 0x70,0x62, 0x80,0x7c, 0x05,//0x20, 0x80,0x28, 0x30,0x6c, 0x00,0x6d, 0x80,0x6e, 0x00,0x70, 0x02,0x71, 0x94,0x73, 0xc1,0x3d, 0x34, 0x5a, 0x57,//根据分辨率不同而设置0x12, 0x40,//SVGA 800*6000x17, 0x11,0x18, 0x43,0x19, 0x00,0x1a, 0x4b,0x32, 0x09,0x37, 0xc0,//0x4f, 0xca,0x50, 0xa8,0x5a, 0x23,0x6d, 0x00,0x3d, 0x38,//0xff, 0x00,0xe5, 0x7f,0xf9, 0xc0,0x41, 0x24,0xe0, 0x14,0x76, 0xff,0x33, 0xa0,0x42, 0x20,0x43, 0x18,0x4c, 0x00,0x87, 0xd5,0x88, 0x3f,0xd7, 0x03,0xd9, 0x10,0xd3, 0x82,//0xc8, 0x08,0xc9, 0x80,//0x7c, 0x00,0x7d, 0x00,0x7c, 0x03,0x7d, 0x48,0x7d, 0x48,0x7c, 0x08,0x7d, 0x20,0x7d, 0x10,0x7d, 0x0e,//0x90, 0x00,0x91, 0x0e,0x91, 0x1a,0x91, 0x31,0x91, 0x5a,0x91, 0x69,0x91, 0x75,0x91, 0x7e,0x91, 0x88,0x91, 0x8f,0x91, 0x96,0x91, 0xa3,0x91, 0xaf,0x91, 0xc4,0x91, 0xd7,0x91, 0xe8,0x91, 0x20,//0x92, 0x00,0x93, 0x06,0x93, 0xe3,0x93, 0x05,0x93, 0x05,0x93, 0x00,0x93, 0x04,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,0x93, 0x00,//0x96, 0x00,0x97, 0x08,0x97, 0x19,0x97, 0x02,0x97, 0x0c,0x97, 0x24,0x97, 0x30,0x97, 0x28,0x97, 0x26,0x97, 0x02,0x97, 0x98,0x97, 0x80,0x97, 0x00,0x97, 0x00,//0xc3, 0xed,0xa4, 0x00,0xa8, 0x00,0xc5, 0x11,0xc6, 0x51,0xbf, 0x80,0xc7, 0x10,0xb6, 0x66,0xb8, 0xA5,0xb7, 0x64,0xb9, 0x7C,0xb3, 0xaf,0xb4, 0x97,0xb5, 0xFF,0xb0, 0xC5,0xb1, 0x94,0xb2, 0x0f,0xc4, 0x5c,//根据分辨率不同而设置0xc0, 0x64,0xc1, 0x4B,0x8c, 0x00,0x86, 0x3D,0x50, 0x92,    //更改0x51, 0xC8,0x52, 0x96,0x53, 0x00,0x54, 0x00,0x55, 0x00,0x5a, 0xC8,0x5b, 0x96,0x5c, 0x00,0xd3, 0x02,//auto设置要小心//0xc3, 0xed,0x7f, 0x00,0xda, 0x09,0xe5, 0x1f,0xe1, 0x67,0xe0, 0x00,0xdd, 0x7f,0x05, 0x00,
};

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