Getting the screen working in retropie

using raspi-config, enable spi, enale ssh, disable overscan

in /etc/modules, add

spi-bcm2835
fbtft_device

in /etc/modprobe.d/fbtft.conf add

options fbtft_device name=fb_ili9341 gpios=reset:25,dc:24 speed=80000000 bgr=1 rotate=90 custom=1fps=60

reboot and its all done!

The screen by default wont actually run retropie on its own. So we need to run some code which copies the current screen into the tft. we need to download and install the code

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

now we just need to add into /etc/rc.local (just make sure its before the exit)

fbcp&

now when you reboot, you will have a screen working!