I have a automotive dash I built for myself that accesses the ECU via CANbus, gps for speed. I started with the Mega and moved it to an ESP32 with a Nextion display. I wanted to use Squareline Studio to design a nicer UI/dash but am stumped.
Not sure which MCU to use. Teensy 4.1? Stick ESP32 since the code works? Portenta since it has a USB display port and makes the answer for the below easier?
Which 7" touch display should I use? I’ve seen some on best displays website but can’t find a good example code to look at.
Stumped. Googled and stumped myself even more. Lol
A 7" display usually has at least 800x480 resolution. Usually it’s too slow for a normal ESP32 especially with SPI bus. Teensy 4.1 can be better choice, but you should target parallel port communication. I’m not sure Teensy has a parallel port periphery or it should be implement using normal GPIOs.
Selecting a display is always difficult. I suggest looking around at https://www.buydisplay.com/
Usually they provide basic drivers too.
A Teensy 4.1 can do parallel port (16 bits) but does not support DMA.
A Teensy Micromod can do 8 bit parallel with DMA.
Choose your weapon;)
I personally use the Micromod with an ILI9488 and it’s more than fast enough.
With a 800*480 resolution you might get slightly lower FPS over an 8 bit wide bus but I think you can still achieve ~30FPS with the right screen