I have placed the shield (LCD screen) onto the Arduino DUE.I downloaded the correct Libraries and got the Sketch from the WIKI page.Nothing is happening to the LCD (looks like no p...

The "lcd.println();" doesn't work as intended in my code. Each line is printed on top of each other.
Could it have something to do with these warnings that appear when I compile the code:

warning: '__progmem__' attribute ignored [-Wattributes]

virtual void draw(const PROGMEM byte* buffer, uint16_t width, uint16_t height) {}

Thanks!

the display is not functioning , I charge the examples of software on the wiki and with the command println only appears the first character of the string of characters.
I am using DFRobot_TELEMATICS_3.5-_TFT_Touch_LCD_Shield- with the Arduino Mega 2560

My code is as follows:

#include <arduino.h>
#include <spi.h>
#include <multilcd.h>

LCD_R61581 lcd;

void setup(){
lcd.begin();
lcd.setFontSize(FONT_SIZE_MEDIUM); //set font size
lcd.setColor(RGB16_YELLOW); //set strings color
lcd.setCursor(0, 0);
lcd.print("SAMPLE");
}

void loop(){

}

You need to change the PWM on D8, not just the voltage.

I need to run this display by I2C. I am looking for the libraries.

Did you switch the power switch to 3.3V? The working voltage of DUE is 3.3V