Use Arduino Mega2560 to drive ILI9341 3.2″ touch screen

Byadmin

Use Arduino Mega2560 to drive ILI9341 3.2″ touch screen


Buy from US Buy from UK Buy from DE Buy from IT Buy from FR Buy from ES
amz amzuk

The SD Card Instruction for Mega2560 and 3.2 inch Touch Screen

The SD Card Instruction for Mega2560 and 3.2 inch Touch Screen

1)Objective:
In this project, we will use an Arduino Mega2560 board to drive ILI9341 3.2″ touch screen.

2)Parts and Devices

Pictures Device Quantity
7 Arduino mega2560 board 1
3.2inchscreen for mega2560 3.2 inch ili9341 screen 1
3,2inchscreenadaptershield 3.2 inch screen adapter shield 1

Put the screen into shield first, then connect the shield to Arduino, it is quite straight forward.

3)Download and install UTFT and URTouch library file from following link and copy them into Arduino library folder.

URTouch download link
UTFT download link

Unzip files downloaded from above download link, then copy these 2 folders into Arduino library folder as following:

If you already have UTFT library in Arduino, you need change dsy[] array in UTFT.CPP under UTFT folder.

dsy[] array before change

before

dsy[] array after change

end

if you don’t change dsy[] array ,the screen only makes partial display as following:

CutOffDouble

after change:

FullScreenDouble

4)Download Ili9341 Arduino sample code from following link:
ili9341 Arduino code download here
Unzip above file you will see 5 folders which contain following files:
UTFT_Demo_320x240_Serial_3.2.INO,URTouch_ButtonTest_3.2.INO,URTouch_Calibration_3.2.INO,URTouch_QuickDraw_3.2.INO,URTouch_QuickPaint_3.2.INO

you can use these files to display sample graph, calibrate screen, test touch, and draw lines.
Before loading these ino files into Arduino, you should go to Arduino IDE ->Tools->boards and select Arduino MEGA 2560. Otherwise your code might not work.

Note: UTFT library defines ili9431 device code is ITDB32WC, so make sure the first argument of MyGLCD function should be ITDB32WC (i.e. myGLCD(ITDB32WC,38,39,40,41)) , If your screen have changed, you should change the value as per definitions in UTFT.h under UTFT library folder.

There are serval version of our TFT LCD screen, Please try the following code one by one, if the touch screen does not work.
myGLCD(ITDB32WC,38,39,40,41)
myGLCD(CTE32,38,39,40,41)
TFT LCD touch screen

Example :
ili9341

About the Author

admin administrator

1 Comment so far

telariumPosted on  12:23 pm - Jan 31, 2017

I don’t see a UTFT.cpp or UTFT.h file in your UTFT download link. Are you sure you posted the right one? I tried using a UTFT library from Rinky-Dink Electronics, but it just results in a grey screen.

Comments are closed.

Comments Are Closed!!!