Retropie working on the 3.5" PiTFT from Adafruit

Post tips/tricks or get help with configuring RetroPie
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jpk806
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Retropie working on the 3.5" PiTFT from Adafruit

Post by jpk806 » Thu May 12, 2016 11:05 pm

[RELOCATION FROM GENERAL FORUM TO RETROPIE SPECIFIC FORUM]

I'm having some problems getting my TFT display to work on my gameboy-zero. I have followed the instructions provided for the smaller brethren of the 3.5" TFT linked here--https://learn.adafruit.com/running-open ... opie-setup--but I still get a white screen. The only thing i changed in this tutorial is I set the resolution with the hdmi_cvt=480 320 60 1 0 0 0 instead of the resolution provided for the smaller displays.
Has anyone got any experience with this issue and would like to help a guy out? Thanks!

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wermy
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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by wermy » Fri May 13, 2016 8:10 am

On the step that has you add this to your config.txt:
dtoverlay=pitft28-resistive-overlay,rotate=90,speed=80000000,fps=60

Did you do pitft28? That might not be correct since you're using the 3.5" one. I'm not sure though, all I have is the 2.8" one.
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jpk806
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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by jpk806 » Mon May 16, 2016 11:41 pm

Thanks for the reply @wermy !
I did actually change that part too, I just forgot to mention it in my post. I believe where you see the "dtoverlay=pitft28-resistive-overlay,rotate=90,speed=80000000,fps=60" I changed it to " dtoverlay=pitft35-resistive-overlay,rotate=90,speed=80000000,fps=60".
Alas, the screen still doesn't boot up. I'll keep investigating this more and post whatever works for me if I can figure it out!

UniBLuNT
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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by UniBLuNT » Fri Nov 18, 2016 11:07 pm

Here is what I did for mine to work:
dtoverlay=pitft35-resistive,rotate=90,speed=64000000,fps=60

no pitft35-resistive-overlay
no pitft35r

Let me know if I am too late to this party.

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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by chanh55 » Sat Nov 19, 2016 12:34 pm

I had a white screen issue too. Turned out my ribbon cable was loose. Just tightened it up and problem solved. Whew...

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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by rogersouza » Mon Jan 09, 2017 7:54 pm

I've got the same issue here: "white screen on booting".
Already tested with 2 different TFT models, with no success. Both with Retropie and Recalbox.

Anyone's got an answer for that?

Thanks a lot

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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by 144TECH » Sun Jan 22, 2017 8:59 am

These screens stay white (only backlight) when switching on/booting up, as soon as the Pi enters Raspbian the driver kicks in and fires up the image on the display, mostly halfway of the booting. idk if you can fire it up before that. but this is what i experienced. (it would be interesting to find out what pin's are hsync and vsync or rgb and composite. if you figure this out, you can have it ''always on'' yet bypassing the gpio to vga mode/dvi/rgb/composite whatever
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Re: Retropie working on the 3.5" PiTFT from Adafruit

Post by ramamramam » Tue Jan 24, 2017 11:59 pm

that is a good post by you...well done
Graduated from Soran University with First Class Degree with Honours in Computer Science.

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