Retropie with Adafruit PiTFT 2.2" and model A+

[andré]

Hey guys! :-)

I'm doing a portable game grrl-kind of project where I have a Raspberry Pi model A+ and an Adafruit PiTFT 2.2" display. I'm stuck trying to get the Retropie to work with the display, as my Pi doesn't have network access and I haven't got my mobiles tethering to work either... and the only way I've found to install the display drivers is by having network access.

Does anybody have like a pre-made image with Retropie+2.2" driver preinstalled or could guide me how to do this? :-) I have a console cable if that helps.

Any help would be much appreciated!!

[senkun]

@andré

look in /boot/overlays/
if I remember correctly, for your 2.2" you should be able to use either;
pitft28-capacitive
pitft28-resistive

[andré]

Thanks for the reply @senkun! :) I found a file called "pitft22.dtbo" online and which I added to the overlay folder from my stationary computer. I then added this line to /etc/modprobe.d/adafruit.conf file
options fbtft_device name=adafruit22a gpios=dc:25 rotate=270 frequency=32000000

Also I added the following to /boot/config.txt

[pi1]
device_tree=bcm2708-rpi-b-plus.dtb
[pi2]
device_tree=bcm2709-rpi-2-b.dtb
[all]
dtparam=spi=on
dtparam=i2c1=on
dtparam=i2c_arm=on
dtoverlay=pitft22,rotate=270,speed=32000000,fps=20

This however did not make it work. Do you have any ideas what I can do further? :) Is there any other way I otherwise can install the drivers already when I create the SD-card?

[glennlake]

@andré It might be worth it to get a usb wifi dongle or a usb ethernet dongle to connect to the internet to configure your build. That could always come in handy for updates or transferring roms.