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Raspberry Pi
Raspberry Pi Forum Dual 3.5" screen with Retropie (not mirrored images)
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  • dual screen
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Dual 3.5" screen with Retropie (not mirrored images)

rictrajano
rictrajano over 2 years ago

Hello,

So I'm trying to create this portable gaming system with a raspberry pie using the retropie emulator, but one requisite for it to work as I'd like is to have 2 different 3.5" screens showing different parts of the actual game total image.

For example I'd like to use the MAME emulator on the Retropie with Game and Watch emulator. The emulator shows one image where you can see both screens of the game and watch (on game and watch models that require 2 screens) but instead of having only one screen connected to the raspberry pie, I want to have 2 screens and spit the image, half goes on one screen and the other on another screen. And not only that, I'd like to crop exactly what part of the image I want to go on each screen.

Is this even possible?? Sweat smile

Thanks for your help

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  • shabaz
    shabaz over 2 years ago

    By coincidence just saw this, linked to a Hackady article today:

    https://www.youtube.com/watch?v=x1Y203vH-Dc&list=PLCGpd0Do5-I3b5TtyqeF1UdyD4C-S-dMa

    It is a 30-episode video series walking through how to write a device driver. 

    I would say, if you can follow that, then by the end of it, it shouldn't be too hard to code a driver that can (say) drive a couple of SPI interfaced LCD screens, each one displaying part of the framebuffer.

    However, the series contains many hours of video overall. You'd have to really want to do it, to sit through that. (Useful employable skill though, if it fits your desired career path).

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  • shabaz
    shabaz over 2 years ago

    By coincidence just saw this, linked to a Hackady article today:

    https://www.youtube.com/watch?v=x1Y203vH-Dc&list=PLCGpd0Do5-I3b5TtyqeF1UdyD4C-S-dMa

    It is a 30-episode video series walking through how to write a device driver. 

    I would say, if you can follow that, then by the end of it, it shouldn't be too hard to code a driver that can (say) drive a couple of SPI interfaced LCD screens, each one displaying part of the framebuffer.

    However, the series contains many hours of video overall. You'd have to really want to do it, to sit through that. (Useful employable skill though, if it fits your desired career path).

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