Load RetroPie on LCD display

[ts87]

Ok, here is the current setup:
– Installed Raspbian Jessie
– Installed RetroPi on top
– Installed drivers for LCD screen

Now when the Raspberry boots to RetroPi it shows the picture on the HDMP. However when i go to startx in the terminal it loads Jessie on the LCD screen..
Is there possibility to redirect the picture of RetroPi from HDMI to the LCD?

[herbfargus]

Fbcp

[ts87]

What do you mean? I installed Fbcp like that:

sudo apt-get install cmake
git clone https://github.com/tasanakorn/rpi-fbcp
cd rpi-fbcp/
mkdir build
cd build/
cmake ..
make
sudo install fbcp /usr/local/bin/fbcp

and still the same – EmulationStation loads on the HDMI instead of LCD.

[herbfargus]

Does it show on the LCD when not plugged into HDMI? Might be a setting in config.txt that you can mess with. I think I did something with the HDMI configs but it was a long time ago so I don’t remember exactly.

[ts87]

I did check the file /boot/config.txt and i did set the following:

hdmi_cvt 320 240 60 1 0 0 0
hdmi_group=2
hdmi_mode=87

however still no result..
Great, played a little bit too much with it.. Now it’s not booting, only white screen – time to reinstall the SD card..

[ts87]

Short update..
I messed with the config.txt some more. I managed to rotate the LCD screen to the direction i actually needed (EmulationStation still boots on HDMI).
Few notes that might help:
When i set my Raspian Jessie to load on LCD it changes the /boot/config.txt by adding
dtoverlay=waveshare32b
dtoverlay=ads7846

I check the file /usr/share/X11/xorg.conf.d/99-fbturbo.conf
and i see output is set to /dev/fb1

From what i have seen online so far all should be fine.. but the fact is EmulationStation loads on the hdmi :(

I think i need to modify /opt/retropie/supplementary/runcommand/runcommand.sh by adding something like this:
mode_new = “DMT-87”
return

on function get_mode()
Unfortunately i don’t see such function in that file..

[herbfargus]

Did you edit the cmdline.txt at all? I had to add fbcon10 or something like that

My notes for my build are on this page:https://www.petrockblock.com/forums/topic/gamepi-zero-attachment-fileimage-jpeg/ may differ slightly from your hardware

[ts87]

@herbfargus thank you kindly!
So i re-installed Jessie.
Then i installed the LCD driver.
Next i installed RetroPie.
RetroPie shows on HDMI.
Switch to LCD terminal.

sudo raspi-config
expand filesystem

disable overscan

force audio to 3.5mm 

advanced options >> enable Device Tree

advanced options >> enable SPI >> load SPI kernel module by default

sudo reboot

Next
FBCP

sudo apt-get install cmake
git clone https://github.com/tasanakorn/rpi-fbcp
cd rpi-fbcp/
mkdir build
cd build/
cmake ..
make
sudo mkdir /usr/local/bin
sudo install fbcp /usr/local/bin/fbcp

Next
/etc/profile.d/10-emulationstation.sh

on its own on the second line before emulationstation is called.

/usr/local/bin/fbcp &

/boot/config.txt

sudo nano /boot/config.txt
hdmi_force_hotplug=1
hdmi_cvt=320 240 60 1 0 0 0 
hdmi_group=2
hdmi_mode=87

and finally
sudo nano /home/pi/emulationstation.sh

#!/bin/bash
/usr/bin/local/fbcp &
emulationstation
sudo chmod +x emulationstation.sh

Not sure if the last one did anything, but after reboot RetroPie loaded on the LCD :)

[senkun]

[quote=119180]
…
Then i installed the LCD driver.
…

[/quote]

Thank you for the step-by-step, I presume you’re using a 3.2″ lcd from WaveShare? May I ask what is that LCD driver that you installed in the second step right after installing Jessie?

[Author]

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