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本帖最后由 一只耳朵怪 于 2018-5-28 17:35 编辑
大家好! 希望能得到帮助: 硬件环境:dm8168+tvp7002 实现功能:输入未知分辨率-- vpss--cap--device--tvp7002返回分辨率信息 给vpss正常显示图像 思路: 1、怎么配置寄存器让tvp7002检测输入行场频,来算设置输出? 2、怎么给vpss显示检测到的分辨率信息? 我对vpss协处理器作用不是很熟悉,可能思路不是很对,有异议可以告诉我下,在此先谢过了。 |
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谢谢你的热心回复! 你说的配置之前有看过,我是想通过读出tvp7002的寄存器获取到总的行数、行频、场频等信息,我在网上找到读出输入信息的寄存器: 0x14 :是否检测出行同步和场同步、行场同步的输入引脚、行场同步极性; 0x37~0x38: 每帧图像的行数; 0x39~0x3A:可读出每行的像素点数; 在tvp7002有对这几个寄存器详细的说明如何计算 fh 和 fv 现在问题来了:0x37~0x3A 这4个寄存器读不到?? 有视频源: I2C (0x5d): 0x14 = 0xb7 I2C (0x5d): 0x37 = 0x65 I2C (0x5d): 0x38 = 0x24 I2C (0x5d): 0x39 = 0x60 I2C (0x5d): 0x3a = 0x00 没有视频源: I2C (0x5d): 0x14 = 0x05 I2C (0x5d): 0x37 = 0x65 I2C (0x5d): 0x38 = 0x24 I2C (0x5d): 0x39 = 0x60 I2C (0x5d): 0x3a = 0x00 问题: 1、tvp7002有没有像ED数据有效一样能直接获取到输入源信息 ? 2、 要检测输入源 是不是还要激活什么寄存器? ----------------------1080p的配置 I2C (0x5d): 0x01 = 0x89 I2C (0x5d): 0x02 = 0x80 I2C (0x5d): 0x03 = 0xe0 I2C (0x5d): 0x04 = 0x00 I2C (0x5d): 0x05 = 0x06 I2C (0x5d): 0x06 = 0x10 I2C (0x5d): 0x07 = 0x2c I2C (0x5d): 0x0e = 0x36 I2C (0x5d): 0x0f = 0x2e I2C (0x5d): 0x10 = 0x58 I2C (0x5d): 0x11 = 0x40 I2C (0x5d): 0x12 = 0x01 I2C (0x5d): 0x13 = 0x00 I2C (0x5d): 0x15 = 0x43 I2C (0x5d): 0x16 = 0x11 I2C (0x5d): 0x18 = 0x11 I2C (0x5d): 0x17 = 0x12 I2C (0x5d): 0x19 = 0x00 I2C (0x5d): 0x1a = 0xca I2C (0x5d): 0x21 = 0x22 I2C (0x5d): 0x22 = 0x00 I2C (0x5d): 0x26 = 0x80 I2C (0x5d): 0x28 = 0x53 I2C (0x5d): 0x2a = 0x87 I2C (0x5d): 0x2c = 0x80 I2C (0x5d): 0x2d = 0x00 I2C (0x5d): 0x2e = 0x80 I2C (0x5d): 0x31 = 0x18 I2C (0x5d): 0x35 = 0x00 I2C (0x5d): 0x36 = 0x00 I2C (0x5d): 0x3d = 0x06 I2C (0x5d): 0x3f = 0x00 I2C (0x5d): 0x44 = 0x04 I2C (0x5d): 0x45 = 0x04 I2C (0x5d): 0x46 = 0x2d I2C (0x5d): 0x47 = 0x2d I2C (0x5d): 0x48 = 0x00 I2C (0x5d): 0x49 = 0x00 I2C (0x5d): 0x40 = 0xda I2C (0x5d): 0x41 = 0x00 I2C (0x5d): 0x42 = 0x5e I2C (0x5d): 0x43 = 0x08 --------------------- |
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ctx1129 发表于 2018-5-28 12:45 ***你可以参考一下: http://www.deyisupport.com/question_answer/dsp_arm/davinci_digital_media_processors/f/39/t/89863.aspx http://www.deyisupport.com/question_answer/dsp_arm/f/22/t/94897.aspx?pi2132219853=1 |
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