TFT keeps showing just white

Using Arduino Displays
#1

Hi,

First of all, I’m a complete newbie with arduino, so I may be doing things just plain wrong. I have a 4.3" inch TFT LCD screen that I’m connecting to a CTE shield, and this to an Arduino DUE R3.

I first tried to execute some examples. Some of them use the UTFT_CTE library, but there seems to be a couple of functions, namely _SPIread and _SPIwrite), that do not work (note that the SPI library does not include these).

So I decided to use just the UTFT library and I changed the port configuration as stated in the CTE help document:

UTFT myGLCD(CTE50,25,26,27,28);

It compiles and allows to upload it to the arduino, but the screen won’t show anything.

As a first program I decided to try with this:

#include <UTFT.h>
UTFT myGLCD(CTE50,25,26,27,28);

extern uint8_t SmallFont[];


void setup() {
  myGLCD.InitLCD();
  myGLCD.clrScr();
  myGLCD.setBackColor(0,0,0);
  myGLCD.setFont(SmallFont);
  myGLCD.print("Hi", CENTER,10);
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Thank you very much in advance

#2

Hi Victor,

The most likely problem is you didn't uncomment line 4 of \libraries\UTFT\hardware\arm\HW_ARM_defines.h

#define CTE_DUE_SHIELD 1

Regards,

Graham

#3

Hi Graham,

Thank you for your response. Actually, it was uncommented, so I don't now what it can be :confused: .

By the way, what happened with the CTE library? You seem to know about it, were they going to release a new one and finally they didn't?

#4

victormv99:
I have a 4.3" inch TFT LCD screen that I'm connecting to a CTE shield, and this to an Arduino DUE R3.

Can you confirm WHAT size display you have? Is it 4.3" or 5.0" ??

Graham

#5

victormv99

Make sure the pins are connected all the way in, I know it sounds like a dumb answer, but trust me I had the same problem you did, connected the pins all the way in and, boom, demo worked perfectly.

#6