raspi2raspi
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AndrewFromMelbourne
How to copy the display screen of HDMI interface to the RGB LCD screen of DPI interface?
Hi Andrew! First of all, thank you for giving me an idea. Now I want to display HDMI screen on DPI interface（https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md）, but I tried several routines of yours, but they failed. Can you give me some advice? Thank you!
What you are looking for is the opposite of raspi2raspi. It would be possible to write a program to do this, but I don't have anything that would do what you want.
What you are looking for is the opposite of raspi2raspi. It would be possible to write a program to do this, but I don't have anything that would do what you want.
I'm glad to hear from you. Yesterday, I consulted the relevant information and found that the display number of raspberry HDMI is 5 and the display number of DPI is 4. I used the command line：
sudo ./raspi2raspi --source 5 --destination 4
Surprised to see the DPI LCD screen synchronized display HDMI screen. But I would like to ask you how to understand the relationship between different hardware display interfaces and "display number"?
Sorry, yes of course. It has been a long while since I did this. I don't really know how thee display numbers are assigned.