Example Code for Arduino-Touch Function

Hardware Preparation

• DFR0323 Bluno Mega 2560 x 1
• DFR0387 3.5" TFT Touch LCD Shield x 1

Software Preparation

• Download Arduino IDE: Click to download Arduino IDE
• Download the DFRobot_TELEMATICS_3.5-_TFT_Touch_LCD_Shield library: DFRobot_TELEMATICS_3.5-_TFT_Touch_LCD_Shield library
• About how to install the library?

Note: This library only works on Classic Arduino IDE 1.0.x)

Sample Code

#include <Arduino.h>
#include <SPI.h>
#include <MultiLCD.h>
#include "touch.h"

LCD_R61581 lcd;

void setup(){
  lcd.begin();
  lcd.setFontSize(FONT_SIZE_MEDIUM);  //set font size
  lcd.setColor(RGB16_YELLOW);  //set strings color
  lcd.println("DFRobot");
  lcd.println("TELEMATICS LCD SHIELD V1.0");
  lcd.println();
  lcd.setColor(RGB16_WHITE);

  touch.init();
}

void loop(){
  lcd.setCursor(0, 8);
  int x, y;
  if ( touch.read(x, y) ){
    lcd.print("X:");
    lcd.print(x);
    lcd.print(" Y:");
    lcd.print(y);
    lcd.print("  ");
  } else {
    lcd.print("           ");
  }
}

Result

The yellow text "DFRobot" and "TELEMATICS LCD SHIELD V1.0" is permanently displayed on the screen.
Touching any position on the screen will show real-time X/Y coordinates in white at the specified position; the coordinate area is cleared when the touch is released.