RGB and SATA function switching module based on Quanzhi rk3568j

1. RGB Function transfer module

FET3568-C The core board supports five display interfaces , What you can see on the development board are HDMI、eDP、LVDS and MIPI, The fifth display interface is actually a multiplexing interface .

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CPU Inside is the RGB And part of it UART、SPI、IIC、GPIO Reuse the , By default, the Development Board reserves 2.54mm The needle row of , Convenient for users to plug in DuPont line expansion function module , Such as our temperature and humidity sensor 、UART turn RS485 wait .

RGB The function realization needs to use the transfer module --- take 2.54mm The row pin is converted into the connector of Feiling standard LCD module .

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Now it's time to use LCD, Download user information , open Linux Catalog , There will be two folders , see LCD Use document of transfer module ,after and before It is the device tree file before and after modification .

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Click on after Go to the bottom directory , take DTSI File copy in VM development environment , Use command cp, Copy it to the corresponding location , Then compile the kernel , Generate boot.img Used for single step burning .

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The generated boot Put the file on the desktop , Use the one-step burn tool , Identify the device , Read the device partition table , Burn it alone boot, Click on the perform , Use PuTTy Software , Open the serial port , Wait for the development board to start , At this time LCD The screen has shown logo, But the interface after startup is not displayed .

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Check with the command LCD Whether to load successfully , You can see that it has been loaded successfully , But the screen didn't light up , Now we need to LVDS Display of is off , First restart , Enter again uboot Screen selection , And then LVDS Show off , After closing successfully , Choose restart , Then you can operate normally .

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2. SATA Function transfer module

In addition to the display interface ,PCIe2.1 and SATA There is also reuse , These two functions are commonly used by engineers , Feiling also made a transfer design for everyone ,PCIe The slot is switched to SATA The connector .

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Now it's time to use PCLe turn SATA, Download user information , open Linux Catalog , There will be two folders .

see SATA Use document of adapter board module ,after and before It is the device tree file before and after modification , Click on after Go to the bottom directory , take DTSI File copy in VM development environment , Use command cp, Copy it to the corresponding location , Then compile the kernel , Generate boot.img Used for single step burning .

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The generated boot Put the file on the desktop , Use the one-step burn tool , Identify the device , Read the device partition table , Burn it alone boot, Click on the perform , Use PuTTy Software , Open the serial port , Wait for the development board to start , use df-h The command shows that these three devices have been mounted .

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use lspci You can see there is no PCIe equipment , use cd Command access directory , You can see the files in the hard disk , It's a success https://www.forlinx.com/