ILI9341 Graphics Test Errors
Posted: Sat Jun 29, 2019 11:55 pm
I'm trying to get this display (https://tinyurl.com/yyc8hrxo) working with this board (https://tinyurl.com/y5whqvrf). I'm using the Adafruit_ILI9341 library and the ESP32_ILI9341_Graphicstest. I'm compiling and uploading with Arduino IDE 1.8.9 (tried both store and desktop versions on Windows 10). Nothing complicated...or so I thought.
The issue I'm having is that the graphics test shows and correctly scrolls through the fill screen tests but then things get weird. Sometimes text will be missing from the testText portion of the test. Sometimes the screen goes white. At some point it will screw up the resolution and start only updating about 3/4 of the screen. I know it's the resolution because the triangles are squished and not cropped.
The errors remain consistent in the following manner. Each reboot of the device results in the same errors in display. If I change something like a color just to get it to recompile, the errors change but will again be consistent with each reboot. I can then change the code back to the original and the errors will change again but not to the same as before and again they will repeat with each reboot.
So each compile results in different display behavior but each reboot results in consistent behavior. I have 2 of these screens and the behavior does not change if I swap screens.
I'm incredibly confused here and my instinct is to blame the compiler or controller but I just don't know where to move next with diagnosing this issue. Any help is appreciated.
The issue I'm having is that the graphics test shows and correctly scrolls through the fill screen tests but then things get weird. Sometimes text will be missing from the testText portion of the test. Sometimes the screen goes white. At some point it will screw up the resolution and start only updating about 3/4 of the screen. I know it's the resolution because the triangles are squished and not cropped.
The errors remain consistent in the following manner. Each reboot of the device results in the same errors in display. If I change something like a color just to get it to recompile, the errors change but will again be consistent with each reboot. I can then change the code back to the original and the errors will change again but not to the same as before and again they will repeat with each reboot.
So each compile results in different display behavior but each reboot results in consistent behavior. I have 2 of these screens and the behavior does not change if I swap screens.
I'm incredibly confused here and my instinct is to blame the compiler or controller but I just don't know where to move next with diagnosing this issue. Any help is appreciated.