[Guide] ili9341 SPI TFT Screen on Retropie

[Sande]

Hi Folks,

Is there any way to connect this screen without using Pin 19 (GPIO 10) and Pin 23 (GPIO 11)? I ask because I'm trying to use a SNES controller, and I can connect that to the Raspberry Pi Zero using the 5 existing output pins on the controller and run gamecondriver on the Pi. This , however, requires that I connect to pins 1, 5, 9, 19, and 23.

All the research I've attempted suggests that both the screen and the controller require Pins 19 and 23 and that connot be changed. But I'm hoping theres something I can change in the drivers to allow either one to use different pins.

Thanks in advance for any advice anyone can give.

[moosepr]

I think you might be struggling on the screen side, those pins are used for the spi connection, and they can't be changed unfortunately. I don't know enough about the gamecondriver to be able to advise on that side in afraid

[username 123]

Will this help us achieve 60fps with our ili9341 screens?
https://www.raspberrypi.org/forums/view ... p?t=182217
Forgive me if it's been posted before. Sounds like this guy got spi screens to real 60fps.

[abrugsch]

yes and no. he's posted in here (this very thread: http://www.sudomod.com/forum/viewtopic. ... 091#p32091 )and is in the discord channel regularly updating us with his progress. but as it's a library not a driver, the game or program has to explicitly use it in the code. it has to be written into the game itself. He is working on an emulator but I'm not sure exactly what it will support.

It does look very promising on the 60fps front though!

[moosepr]

Yeah he is using more efficient methods of updating the screen like only updating the parts that have changed. Clever stuff!

[username 123]

Im really obsessing over this great little lcd. I wish it didnt have a blueish hue to it.

[moosepr]

Yeah they are really good. Cheap and simple!

[Holydohnut]

Hi moosepr. Just wanted to let you know that my ACTUAL ili9341arrived today, and your guide worked first time. Not sure what to do now with this useless ILI9225, but hey ho!

Thanks again for your help.

[moosepr]

That's awesome news dude! Glad it came good in the end! You can add that screen to your parts bin like I do. It might work of for Arduino stuff

[codeman0624]

Why does overscan need to be disabled?

Is there a way to adjust where on the screen everything is displayed? Something like what overscan would do. I'm trying to get a display to fit a particular opening I have available.