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Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
yep, thats how i connected them i think it might be that? ill try to get some fresh wires and see if it helps -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
here: https://paste.armbian.com/oyozunowab (running through docker on fedora 42 latest everything after a restart, the same issue happens on a fresh download too) i dont have it available atm, i will include it as soon as i can get access to it, but last time i checked dmesg there was pretty much no errors no, not really, i changed the pins for D/C and reset iirc -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
ok so, i tried to replicate the issues i had but they just... didnt happen? everything just... works perfectly fine????? i have no idea if it was just that i was particularly unlucky or something, but i just compiled a working image fairly easily. edit: nevermind, when i retried after a restart i got a Failed to update binfmts [ update-binfmts --enable qemu-arm ] error, googling yielded almost no information (host: fedora 42) i did! its a russian store, so it probably has a bunch of countries region blocked (for me it works, even through VPN) -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
i am using a downloaded image, trying to compile armbian has been an awful experience, i guess ill keep trying different settings and see if anything changes -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
oh so THAT'S why Xfce didnt launch, good to know. i did try lowering the SPI frequency but the result is pretty much the same. i am using the panel-mipi-dbi-spi driver, i will check the script later and see how it actually works. i am 100% sure the display is not defective, it works perfectly fine through tft_eSPI on an esp32, i will try getting an another unit and see if it changes anything. -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
now that i think of it, i think you're right; the data being displayed is not offset its just straight up not displayed in some regions and wraps around for some reason. i bought the display here. its very likely resold from aliexpress. -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
thanks! direct wiring has definitely changed something, i guess ill keep changing stuff and update if i get something upd: the direct wiring has definitely made an improvement, but it still looks offset, i have no idea how to fix this, changing stuff in panel-timing just.. does stuff randomly, and i have no idea how to pick the right one. does anyone know the solution to this kind of weirdness? this is the best i could get it: -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
hello again, i searched around and pretty much everything links back to this thread. this is the best result i could get on latest armbian, does anyone know what i can change? i think the problem is that the image is kinda shifted down and then goes back up? im pretty sure i need to change some kind of offset, but other than that im stumped -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
ill go look in there then, thanks! -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
its an ili9488 3.5" cheap red SPI display, pretty much right after posting the comment i got it to output a garbled image, i did change the pins to match my pin connections. i was running orange pi branded debian, doing stuff on armbian doesn't work for some reason, im going to try to compile it myself. i completely removed touch from the DTS because i dont really need it. i am on orange pi zero 2w btw. for some reason i cant upload an image -
Driving the ili9488 LCD (4.0 inch cheap chinese clone)
p a s h replied to robertoj's topic in Allwinner sunxi
hello! i was trying to hook up a 3.5" display to my orange pi zero 2w, but when i try to use the DTS, all i get is black and white stripes. does anyone know a fix or what this even means?