有关adv7181显示有横纹

rothwanhuang — Thu, 08 Dec 2016 01:40:14 GMT

各位好，我现在使用的是 "imx6q_L3_14_52" ，前期显示倒车的CVBS有横纹。

1，操作：显示方式是当倒车时，CVBS-->ADV7181-->IMX6Q-->LVDS 屏显示。如下图，显示白色直线时，有明显的横纹。

2.同时这个测试程序是用nxp的测试代码 imx-test/test/mxc_v4l2_test。

3.adv7181的参数设置如下：

and For adv7181, I have try the followed settting:

p->if_type = V4L2_IF_TYPE_BT656;

p->u.bt656.mode = V4L2_IF_TYPE_BT656_MODE_NOBT_8BIT;

p->u.bt656.nobt_hs_inv = 0;

p->u.bt656.bt_sync_correct = 0; // Use internal VSYNC mode, CSI_VSYNC and CSI_HSYNC pins are not needed.

p->u.bt656.clock_curr = 0; //BT656 interlace clock mode

adv7181 I2C register setting for CVBS input:

adv7180_write_reg(0x00,0x00);

adv7180_write_reg(0x03,0x0c);

adv7180_write_reg(0x04,0x77);

adv7180_write_reg(0x17,0x41);

adv7180_write_reg(0x1d,0x47);

adv7180_write_reg(0x31,0x02);

adv7180_write_reg(0x3a,0x17);

adv7180_write_reg(0x3b,0x81);

adv7180_write_reg(0x3d,0xa2);

adv7180_write_reg(0x3e,0x6a);

adv7180_write_reg(0x3f,0xa0);

adv7180_write_reg(0x86,0x0b);

adv7180_write_reg(0xf3,0x01);

adv7180_write_reg(0xf9,0x03);

adv7180_write_reg(0x0e,0x80);

adv7180_write_reg(0x52,0x46);

adv7180_write_reg(0x54,0x00);

adv7180_write_reg(0x7f,0xff);

adv7180_write_reg(0x81,0x30);

adv7180_write_reg(0x90,0xc9);

adv7180_write_reg(0x91,0x40);

adv7180_write_reg(0x92,0x3c);

adv7180_write_reg(0x93,0xca);

adv7180_write_reg(0x94,0xd5);

adv7180_write_reg(0xb1,0xff);

adv7180_write_reg(0xb6,0x08);

adv7180_write_reg(0xc0,0x9a);

adv7180_write_reg(0xcf,0x50);

adv7180_write_reg(0xd0,0x4e);

adv7180_write_reg(0xd1,0xb9);

adv7180_write_reg(0xd6,0xdd);

adv7180_write_reg(0xd7,0xe2);

adv7180_write_reg(0xe5,0x51);

adv7180_write_reg(0xf6,0x3b);

adv7180_write_reg(0x0e,0x00);

4.根据一些信息，增加Deinterlace patch,显示有点点改善，但还是会有；

5.请各位大侠分析分析，指出问题所在，彻底解决，谢谢！

Re: 有关adv7181显示有横纹

jimmychan — Wed, 14 Dec 2016 07:45:48 GMT

It is better to use the unit test mxc_v4l2_tvin for testing adv7181.

Re: 有关adv7181显示有横纹

rothwanhuang — Wed, 14 Dec 2016 07:53:59 GMT

Hi Jimmy chan,

Yes , i test the adv7181 with the mxc test mxc_v4l2_tvin,thanks!

Re: 有关adv7181显示有横纹

lixiaohui — Fri, 07 Apr 2017 06:16:24 GMT

你好，同问你的图像显示横纹问题最后怎么解决了啊？

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有关adv7181显示有横纹

Re: 有关adv7181显示有横纹

Re: 有关adv7181显示有横纹

Re: 有关adv7181显示有横纹