ILI9341 problem

I tested ILI9341 with the library "Adafruit_ILI9341.h" it works well, the image is clear but it takes a long time to draw it screen about 1 minute.
With the "Ucglib.h" library it is faster but the image is confused and the colors are strange.
regards
Giordano

I tested ILI9341 with the library "Adafruit_ILI9341.h" it works well, the image is clear but it takes a long time to draw it screen about 1 minute.

How is simulation speed?

With the "Ucglib.h" library it is faster but the image is confused and the colors are strange.
regards

Can you provide a link to that library and some example?

ILI9341 component can still be optimized, not a priority by now, but eventually I will get into it.

Library Link:
https://github.com/olikraus/Ucglib_Arduino/releases/tag/1.5.2

I used the example Box3D.
Real Speed 24% bad picture.

Library Link:
https://github.com/adafruit/Adafruit_ILI9341
I used the example graphictest.
while with the library "Adafruit_ILI9341.h" Real Speed 13% good picture.
Regards
Giordano

Thanks. I will have a look.

Not sure how the "Ucglib.h" library graphictest should look like, but those color paterns are beautiful hehe.

https://www.youtube.com/watch?v=4hhMrg6VT7s

regards

The issue with Ucglib should be solved in 0.4.15 branch Rev 190.
I have not tested it very much so not sure if evrything is working properly.

But I think this library should be even slower as it uses 18 bit RGB pixel mode (3 bytes per pixel), while Adafruit uses 16 bit mode (2 bytes).
The fact that it was faster is sprobably because it was not working properly.

One thing that slows down simulation speed is that SCK output in Arduino Uno is where the board led is connected.
And simulating a led at 8 MHz takes a lot of cpu.
If you use an Atmega328 instead it will run much faster.

Simulating this dispaly will be slow in any case as it is using 8 MHz SPI clock, and no way the simulator can keep that at real time when it is continuously sending data.

A posible solution for this would be implementing some kind of "virtual" SPI conection, the same way that Serial Monitor or Serial Port connections are done.

Now with Ucglib the picture is better but there is still a color problem.
I attach screen and test program for arduino
Greetings

Now with Ucglib the picture is better but there is still a color problem.

Should be solved in Rev 191.