Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. It only takes a minute to sign up.
Sign up to join this community
I bought this Artillery 3.2 Inch LCD Touch Screen Display Monitor: https://www.aliexpress.com/item/32553185633.html?spm=a2g0s.9042311.0.0.27424c4dFky0Ok
But it only shows a white screen, so I probably need some driver to install? But I cannot figure out which one to install?
How can I find out these things?
Question
(1) My Artillery 3.2" SPI TFT touch screen only shows a white screen.
(2) Why?
(3) Do I need to install any driver?
Answer
ILI9341 Touch Screen Interface
White Screen Testing
(1) Your touch screen seems to use the ILI9341 driver (Ref 1)
(2) You can google video tutorials to find more details (eg Ref 2, 4)
(3) Depending on your config: Rpi3B+/Rpi4B stretch/buster version/released dates etc, and whether you are using 3/4 pin SPI or 16 GPIO pin connector mode, you might need to build your own driver/kernel module (Ref 3)
A white screen usually means at least the back lit LED is working. You need to install the driver to display. Ref 3 shows how to get the white screen and build a kernel.
References
(1) Artillery SPI TFT XPT2046 3.2 inch LCD touch screen monitor Module for Raspberry Pi3B/B+
(2) TSC2046 XPT2046 TOUCH SCREEN ILI9341 2,008 views 2017oct01
(3) LCD TFT screen 2.8" ILI9341 SPI connect (How to build kernel/driver)
(5) ILI9341 Touch LCD SPI Based Driver for Rpi3B+ stretch - juj 2019apr19
(6) Rpi ILI9341 / XPT2046 SPI 3.2" Touch LCD Display - LCwiki
Appendices
Appendix A - Wiring Notes v0.1
End of Answer
