Nextion display issues
Out of courtesy for @JonnyMac I’ve moved this discussion into a separate thread so I dont plug-up Jon’s teaching efforts.
My original post:
I seem to have bricked my Nextion display. The display came pre-loaded with a neat, interactive "fake factory" demo, but when I tried to load a basic UI (just a "hello world"), the display tried to update its firmware from the SD card, rebooted a couple of times, and now it says "System Data ERROR!". It does respond on the serial channel however, and I've sent it a reset command which it executes... and then it displays the same error. So I'm sorta stuck.
I'd like to copy a known good boot image to the SD and see if this fixes it, but I have no such thing. In an effort to ungork my display, could you post a complete UI in a "ready to run" format? I don't care what it is or how bad it looks... I just need something that I know runs to try to get out of this hole.
ADDIT: it responds just fine to commands over the 9600 baud serial channel. I can draw boxes, circles and clear the screen under P2 control. It just wont load pages from SD.