Ecco il programma per intero, ho creato più pulsanti ma nello sketch sto facendo le prove con il primo pulsante senza considerare gli altri… Quando avrò ben capito, farò le "coordinate anche per i successivi…
Comunque con il tuo consiglio, molto prezioso, la situazione è migliorata ma non avendo sensibilità nel tocco (per poco non sfondo il display 
mi sono fermato e posto l’intero sketch:
// IMPORTANT: ELEGOO_TFTLCD LIBRARY MUST BE SPECIFICALLY
// CONFIGURED FOR EITHER THE TFT SHIELD OR THE BREAKOUT BOARD.
// SEE RELEVANT COMMENTS IN Elegoo_TFTLCD.h FOR SETUP.
//Technical support:goodtft@163.com
#include <Elegoo_GFX.h> // Core graphics library
#include <Elegoo_TFTLCD.h> // Hardware-specific library
#include <TouchScreen.h>
// The control pins for the LCD can be assigned to any digital or
// analog pins...but we'll use the analog pins as this allows us to
// double up the pins with the touch screen (see the TFT paint example).
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_RESET A4
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
// When using the BREAKOUT BOARD only, use these 8 data lines to the LCD:
// For the Arduino Uno, Duemilanove, Diecimila, etc.:
// D0 connects to digital pin 8 (Notice these are
// D1 connects to digital pin 9 NOT in order!)
// D2 connects to digital pin 2
// D3 connects to digital pin 3
// D4 connects to digital pin 4
// D5 connects to digital pin 5
// D6 connects to digital pin 6
// D7 connects to digital pin 7
// For the Arduino Mega, use digital pins 22 through 29
// (on the 2-row header at the end of the board).
// Assign human-readable names to some common 16-bit color values:
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
#define MY_BLACK 0x2145
#define MY_RED 0xDAEC
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A3 // must be an analog pin, use "An" notation!
#define YM 8 // can be a digital pin
#define XP 9 // can be a digital pin
#define TS_MINX 120
#define TS_MAXX 900
#define TS_MINY 70
#define TS_MAXY 920
Elegoo_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
// If using the shield, all control and data lines are fixed, and
// a simpler declaration can optionally be used:
// Elegoo_TFTLCD tft;
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
boolean buttonEnabled = true;
void setup(void) {
Serial.begin(9600);
tft.setRotation(0);//set the display diretion(0-3)
Serial.println(F("TFT LCD test"));
#ifdef USE_Elegoo_SHIELD_PINOUT
Serial.println(F("Using Elegoo 2.4\" TFT Arduino Shield Pinout"));
#else
Serial.println(F("Using Elegoo 2.4\" TFT Breakout Board Pinout"));
#endif
Serial.print("TFT size is "); Serial.print(tft.width()); Serial.print("x"); Serial.println(tft.height());
tft.reset();
uint16_t identifier = tft.readID();
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
} else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
} else if(identifier == 0x4535) {
Serial.println(F("Found LGDP4535 LCD driver"));
}else if(identifier == 0x7575) {
Serial.println(F("Found HX8347G LCD driver"));
} else if(identifier == 0x9341) {
Serial.println(F("Found ILI9341 LCD driver"));
} else if(identifier == 0x8357) {
Serial.println(F("Found HX8357D LCD driver"));
} else if(identifier==0x0101)
{
identifier=0x9341;
Serial.println(F("Found 0x9341 LCD driver"));
}
else if(identifier==0x1111)
{
identifier=0x9328;
Serial.println(F("Found 0x9328 LCD driver"));
}
else {
Serial.print(F("Unknown LCD driver chip: "));
Serial.println(identifier, HEX);
Serial.println(F("If using the Elegoo 2.8\" TFT Arduino shield, the line:"));
Serial.println(F(" #define USE_Elegoo_SHIELD_PINOUT"));
Serial.println(F("should appear in the library header (Elegoo_TFT.h)."));
Serial.println(F("If using the breakout board, it should NOT be #defined!"));
Serial.println(F("Also if using the breakout, double-check that all wiring"));
Serial.println(F("matches the tutorial."));
identifier=0x9328;
}
tft.begin(identifier);
tft.drawRect(0,0,240,318,WHITE);
tft.setCursor(50,80);
tft.setTextColor(WHITE);
tft.setTextSize(6);
tft.print("C4P1\n");
// tft.print("\n");
tft.setTextSize(3);
tft.print(" for EDILTEC");
tft.print("\n");
tft.print("\n");
tft.setTextColor(WHITE);
tft.setTextSize(2);
tft.setTextColor(MY_RED);
tft.print(" Projet By:Filomeni");
delay(1000);
}
#define MINPRESSURE 2
#define MAXPRESSURE 1000
void loop(void) {
tft.fillScreen(MY_BLACK);
tft.drawRect(0,0,240,318,WHITE);
tft.fillRect(20,80, 200, 40, MY_RED);
tft.drawRect(20,80,200,40,MY_RED);
tft.setCursor(50,88);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Programma");
tft.fillRect(20,125, 200, 40, MY_RED);
tft.drawRect(20,125,200,40,MY_RED);
tft.setCursor(23,133);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Contatori");
tft.fillRect(20,170, 200, 40, MY_RED);
tft.drawRect(20,170,200,40,MY_RED);
tft.setCursor(55,178);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Setting");
tft.fillRect(20,215, 200, 40, MY_RED);
tft.drawRect(20,215,200,40,MY_RED);
tft.setCursor(50,223);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Test C4P");
TSPoint p = ts.getPoint(); //Get touch point
if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
Serial.print("X = "); Serial.print(p.x);
Serial.print("\tY = "); Serial.print(p.y);
Serial.print("\n");
p.x = map(p.x, TS_MAXX, TS_MINX, 50, 200);
p.y = map(p.y, TS_MAXY, TS_MINY, 80, 120);
if(p.x>50 && p.x<200 && p.y>80 && p.y<120 && buttonEnabled)// Pulsante "Programma"
{
buttonEnabled = false; //Disable button
//This is important, because the libraries are sharing pins
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
//Erase the screen
tft.fillScreen(BLACK);
//Draw frame
tft.drawRect(0,0,319,240,WHITE);
tft.setCursor(50,50);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Nuova Pagina\n\n Ciao!");
}
delay(5000);
}
}
Ho visto che c’è il “cambiamento” di pagina al tocco, ma dura per il tempo impostato a delay(5000);
come faccio per far si che al cambio la nuova schermata rimanga fissa?
Grazie infinite
Maurizio Filomeni
va bene così come hai fatto