2.8" TFT Touchscreen Raspberry Pi and Retropie

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MJDalton
 
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2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by MJDalton »

Hey Guys,

I am running the 2.8 inch Adafruit touchscreen shield on my Raspberry Pi Model B+. I have the retropi image installed which is a build on Raspbian. After following the instructions

https://learn.adafruit.com/adafruit-pit ... stallation

I have got the RPi to display on the TFT shield. Startx and console displays on the 2.8" TFT but I can't get retropi to open up on the TFT,it still pops up through the HDMI port.

I have tried "FRAMEBUFFER=/dev/fb1 emulationstation" at the console, but after executing it retropi loads through the HDMIport.

Maybe someone can help me?

Regards

Michael D

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MJDalton
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by MJDalton »

Hey,

After some reading it turns out that the retropie project uses OpenGL for most of its emulators. The FRAMEBUFFER method apparently doesn't support OpenGL so it just won't work.

But of a pity.

MJDalton

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wowow
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by wowow »

I've found this post on the pi forums http://www.raspberrypi.org/forums/viewt ... 67&t=58952 which discusses the same thing. They use this https://github.com/tasanakorn/rpi-fbcp utility to copy the framebuffer. Only issue is it may be slow.

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lucasheringer
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by lucasheringer »

Was anyone able to follow this step-by-step and get this working?
https://learn.adafruit.com/running-open ... erformance

I'm trying with with a Pi B+ and tft 2.8c but I am still getting a white screen.

Any help will be appreciated.

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

I'm running into this same issue as well, any ideas?

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drewfustini
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by drewfustini »

Which Raspberry Pi model do you have?
Which model of Adafruit display?
Which SD card image are you running your Raspberry Pi?

The fbtft wiki may have some info that would help. (fbtft is the Linux kernel driver that allows the Pi to use small LCDs).

Framebuffer mirroring

MAME

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

I'm using a Raspberry Pi 2 with the capacitive touchscreen 2.8" LCD from Adafruit (product ID 2423). I'm trying to install the screen using RetroPie (standard install). I've been following this guide (https://learn.adafruit.com/adafruit-pit ... stallation) but I keep getting errors as early as the part entering (curl -SLs https://apt.adafruit.com/add-pin | sudo bash)

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

Has anyone else seen this issue?

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

Screen Shot 2016-02-09 at 5.41.54 PM.png
Screen Shot 2016-02-09 at 5.41.54 PM.png (40.74 KiB) Viewed 1387 times
Has anyone else seen this issue?

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drewfustini
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by drewfustini »

Please try adding the "-k" option:
curl -kSLs https://apt.adafruit.com/add-pin | sudo bash

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

That seemed to allow me to continue with the steps. Thank you!

However now all I get on the screen is a blinking cursor for the console. I used the easy install on a Retropie image. Would that make a difference for my install?

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mrglass86
 
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Re: 2.8" TFT Touchscreen Raspberry Pi and Retropie

Post by mrglass86 »

That seemed to allow me to continue with the steps. Thank you!

However now all I get on the screen is a blinking cursor for the console. I used the easy install on a Retropie image. Would that make a difference for my install?

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