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Bodmer / TFT_ILI9341

A fast Arduino IDE compatible graphics and fonts library including a driver for the ILI9341 based TFT displays.
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Help, please. #23

Open udas2003 opened 3 years ago

udas2003 commented 3 years ago

I just only begin to work with SPI displays and study the examples. I examined some examples and no one does work, just white screen, that periodicaly turn to dark blue. At the same time examples "graphictest" from Adafruit_ILI9341 and "mock_ili9341" from Adafruit-GFX work as should. At all cases I use the same set for Arduino pins. Setup - UNO, converter 5v to 3.3v , chinese "red" SPI display 3.2" 240x320 from Ali. Igor

Bodmer commented 3 years ago

Run the Read_User_Setup sketch and check the output is as you expect for your hardware.

udas2003 commented 3 years ago

Hello Bodmer!

I’m not skilled User at all!

Retired, 69 years old – learn Arduino as a hobby.

So, would you be so kind to give me more detailed instructions?

I did find only one “Read_User_Setup sketch” in your TFT_eSPI library.

I looked over the sketch and, as I understand, the one is for 32 bits processors.

But I have modest UNO.

Is this sketch what you recommend me?

Best wishes

Igor

Run the Read_User_Setup sketch and check the output is as you expect for your hardware.

—

Bodmer commented 3 years ago

Sorry, my response was for a different library. Currently I am travelling but will post back in a few days.

Bodmer commented 3 years ago

See this link. You must use voltage level converters as described. https://www.google.com/amp/s/www.instructables.com/Arduino-TFT-display-and-font-library/%3famp_page=true

udas2003 commented 3 years ago

Sorry, my response was for a different library. Currently I am travelling but will post back in a few days.

Wish fun days!

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udas2003 commented 3 years ago

See this link. You must use voltage level converters as described. https://www.google.com/amp/s/www.instructables.com/Arduino-TFT-display-and-font-library/%3famp_page=true

— Ok, at holydays I”ll buy resistors and check such converter.

Now, in successful sketches from Adafruit_ILI9341 and Adafruit_GFX libraries I used

The pins numbers were chosen from TFT_Clock scetch or User_Setup.h:

“// These are the control pins I use on my UNO/Nano/Pro Micro/ATmega328 setup

// TFT_CS 10 // Chip select control pin

// TFT_DC 9 // Data Command control pin

// TFT_RST 7 // Reset pin (could connect to Arduino RESET pin)”

In User_Setup.h :

I commented out all Fonts besides Font4 (for TFT_Clock sketch),

In “speed up options” only #define FAST_LINE is uncommented.

I don’t see “Other F_AS_T option”

“ If using an UNO or Mega (ATmega328 or ATmega2560 processor) then for best

performance use the F_AS_T option found in the User_Setup.h file in the

TFT_ILI9341 library folder.” Or do you mean #define FAST_LINE?

Best wishes

Igor