Shulou(Shulou.com)06/01 Report--

How to display the CVBS video input of PX2, I believe that many inexperienced people do not know what to do about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

There are two video inputs on the board of PX2, CVBS and YCRCB, both of which are connected to the chip ADV7180, so after configuring the ADV7180 in the kernel, turn on the camera of PX2, and the content of CVBS can be displayed.

But if you are not familiar with the kernel, you may be a little confused about how to configure ADV7180.

However, the landlord here will introduce you to a simple method, and everyone should still know the command make rkpx2_4.4_lcd_defconfig.

We now execute input execution under kernel, and enter make menuconfig after execution.

Search for the address of ADV7180, that is, enter / ADV7180, and you will see the path.

Then press this path to the location of ADV7180, and you can see the following

It shows that ADV7180 has been compiled in the kernel at this time, and the kernel that can display CVBS is generated by executing make kernel. As long as you don't make too many changes, you should be able to use the CVBS of the board normally now. Of course, if the CVBS port is not connected to the device, or if there is a problem with that device, opening the camera will only display a blue screen, so it is recommended that you use the serial port to check the debugging information to confirm whether the ADV7180 is really open. If it is opened, when the device is not connected to the device, the following message will appear when camera is opened.

After reading the above, have you mastered how to input and display the CVBS video of PX2? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.