制作按钮在Arduino TFT触摸屏上做些什么

Question

所以我有一个Arduino MEGA2560和TFT屏蔽触摸屏。我使用了其中的一个例子，通过使用drawRect()，可以在屏幕上显示2个按钮。但是当我按下这两个盒子时，我该如何让这两个盒子做些什么？我知道这两个盒子的坐标，所以我如何让他们“感觉”触摸并进入另一个显示屏？也许一个代码示例会很有帮助！谢谢。

我现在的代码如下：你可以添加必要的部分。

#include <Adafruit_GFX.h> // Core graphics library 
#include <Adafruit_TFTLCD.h> // Hardware-specific library 

#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_RESET A4 // Can alternately just connect to Arduino's reset pin 

#define BLACK 0x0000 
#define BLUE 0x001F 
#define RED  0xF800 
#define GREEN 0x07E0 
#define CYAN 0x07FF 
#define MAGENTA 0xF81F 
#define YELLOW 0xFFE0 
#define WHITE 0xFFFF 

Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET); 


void setup(void) { 
    Serial.begin(9600); 
    progmemPrintln(PSTR("TFT LCD")); 

#ifdef USE_ADAFRUIT_SHIELD_PINOUT 
    progmemPrintln(PSTR("Using Adafruit 2.8\" TFT Arduino Shield Pinout")); 
#else 
    progmemPrintln(PSTR("Using Adafruit 2.8\" TFT Breakout Board Pinout")); 
#endif 

    tft.reset(); 

    uint16_t identifier = tft.readID(); 

    if(identifier == 0x9325) { 
    progmemPrintln(PSTR("Found ILI9325 LCD driver")); 
    } else if(identifier == 0x9328) { 
    progmemPrintln(PSTR("Found ILI9328 LCD driver")); 
    } else if(identifier == 0x7575) { 
    progmemPrintln(PSTR("Found HX8347G LCD driver")); 
    } else { 
    progmemPrint(PSTR("Unknown LCD driver chip: ")); 
    Serial.println(identifier, HEX); 
    progmemPrintln(PSTR("If using the Adafruit 2.8\" TFT Arduino shield, the line:")); 
    progmemPrintln(PSTR(" #define USE_ADAFRUIT_SHIELD_PINOUT")); 
    progmemPrintln(PSTR("should appear in the library header (Adafruit_TFT.h).")); 
    progmemPrintln(PSTR("If using the breakout board, it should NOT be #defined!")); 
    progmemPrintln(PSTR("Also if using the breakout, double-check that all wiring")); 
    progmemPrintln(PSTR("matches the tutorial.")); 
    return; 
    } 

    tft.begin(identifier); 



    progmemPrint(PSTR("Text      ")); 
    Serial.println(startText()); 
    delay(0); 



    progmemPrintln(PSTR("Done!")); 
} 

void loop(void) { 

    startText(); 
    delay(9999999); 

} 



unsigned long startText() { 
    tft.fillScreen(BLACK); 
    unsigned long start = micros(); 
    tft.setCursor(0, 0); 
    tft.println(); 
    tft.println(); 
    tft.setTextColor(GREEN); tft.setTextSize(2.8); 
    tft.println("Welcome "); 
    tft.println(); 
    tft.setTextColor(WHITE); tft.setTextSize(2.5); 

    tft.println(); 

    tft.drawRect(5, 150, 110, 110, YELLOW); 
    tft.drawRect(130, 150, 110, 110, RED); 
    tft.setCursor(155, 170); 
    tft.setTextColor(RED); 
    tft.println("OFF"); 
    tft.fillRect(5, 150, 110, 110, YELLOW); 
    tft.fillRect(13, 158, 94, 94, BLACK); 
    tft.setTextColor(GREEN); 
    tft.setCursor(20, 170); 
    tft.println("ON"); 

    return micros() - start; 

} 

// Copy string from flash to serial port 
// Source string MUST be inside a PSTR() declaration! 
void progmemPrint(const char *str) { 
    char c; 
    while(c = pgm_read_byte(str++)) Serial.print(c); 
} 

// Same as above, with trailing newline 
void progmemPrintln(const char *str) { 
    progmemPrint(str); 
    Serial.println(); 
} 

Answer 1

这是一个UART TFT LCD，它支持所见即所得的编辑器，在电脑上构建您的GUI并通过USB下载。

它可以通过UART的Arduino控制，所以只需使用Serial.print（），你可以使其显示许多图像。你甚至可以自己建立Font并下载到LCD上。

参见https://www.indiegogo.com/projects/nextion-a-cost-effective-high-performance-tft-hmi/x/4467372

Answer 2

需要触摸屏的lib

包括

内部环路
TSPoint P = ts.getPoint（）; //取回一个点
p = ts.getPoint（）; Serial.print（“X =”）; Serial.print（p.x）; Serial.print（“\ tY =”）; Serial.print（p.y）; Serial.print（“\ tPressure =”）; Serial.println（p.z）;

希望这有助于