OV7620开窗问题

luojihao24669

As shown above, HS<7:0> defines the starting pixel within a scan line, HE<7:0> defines the ending pixel
within a scan line. VS<7:0> defines the starting row within a field, VE<7:0> defines the ending
row within a field. VS/VE automatically defines the window height of a image frame. The rect-
angular window defined by HS/HE/VS/VE is the active image window. Only pixels insides this
window is valid, along with the HREF timing signals, black level substitutes the pixel data
when outside the active window.
Identical value for HS/HE or VS/VE is not permitted since it causes undefined window size.
If end point is lower than the starting point, the window begins from the starting point and ends at the far
end of the available image boundary.
The window size calculate formula is as below:
1. Horizontal size: VGA mode: Horizontal window size = (Register [18] - Register [17])*4.
QVGA mode: Horizontal window size = (Register [18] - Register [17])*2.
2. Vertical size: VGA mode: Vertical window size = (Register [1A]- Register [19]+1);
QVGA mode: Horizontal window size = (Register [1A] - Register [19]+ 1).

luojihao24669

啃英文吧

luojihao24669

给你个STM32写的，7670的

luojihao24669

哈哈，赚了好多积分

xuefeiying

luojihao24669 发表于 2012-3-28 00:29
给你个STM32写的，7670的

多谢。我想问下，寄存器改了之后，是不是一直是改的那样了？不会再按着缺省值了是吧？

xuefeiying

luojihao24669 发表于 2012-3-28 00:16
SCCB： 写
   IIC_Start();
    IIC_Send_Byte(OV7620_ID);

非常感谢~

xuefeiying

sonwendi 发表于 2012-3-27 23:22
似乎是IIC通信的，写对应的寄存器就对了

多谢版主

luojihao24669

xuefeiying 发表于 2012-3-28 10:09
多谢。我想问下，寄存器改了之后，是不是一直是改的那样了？不会再按着缺省值了是吧？

复位了就会恢复默认值，要每次使用时初始化OV7620

xuefeiying

luojihao24669 发表于 2012-3-28 16:36
复位了就会恢复默认值，要每次使用时初始化OV7620

奥，原来是这样。多谢~

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