1.54英寸240x240 IPS TFT LCD顯示模塊：高分辨率與低功耗的完美結(jié)合

在電子設(shè)計(jì)領(lǐng)域，顯示模塊的性能對于產(chǎn)品的整體表現(xiàn)至關(guān)重要。今天要給大家介紹一款極具特色的1.54英寸240x240 IPS TFT LCD顯示模塊，它以高分辨率、低功耗等優(yōu)勢，在眾多顯示應(yīng)用場景中脫穎而出。

文件下載：DFR0649.pdf

一、模塊特性

1. 高分辨率與小尺寸

該模塊采用1.54英寸的IPS顯示屏，具備240×240的分辨率，能夠提供清晰、細(xì)膩的顯示效果。小尺寸的設(shè)計(jì)使其在空間有限的應(yīng)用場景中也能完美適配，如電子禮品盒、電子天氣裝飾品等。

2. 低功耗設(shè)計(jì)

模塊可在3.3V - 5V的電壓下工作，最大功耗僅為24mA，全屏功耗約為17mA（3.3V和5V時(shí)典型值）。這種低功耗特性使得它在對功耗要求較高的設(shè)備中表現(xiàn)出色，能夠有效延長設(shè)備的續(xù)航時(shí)間。

3. 寬視角與易接線

IPS顯示屏提供80/80/80/80的視角，無論從哪個(gè)角度觀看，都能獲得清晰、準(zhǔn)確的顯示效果。同時(shí)，模塊采用SPI和GDI接口，與帶有GDI端口的主控制器配合使用，大大降低了接線的復(fù)雜度。

二、規(guī)格參數(shù)

三、引腳說明

四、使用教程

1. 硬件要求

• DFRduino UNO R3（或類似）x 1
• 1.54" 240x240 LCD模塊 x 1
• M - M/F - M/F - F跳線線
• 電線

2. 軟件要求

• Arduino IDE
• 下載并安裝DFRobot_GDL庫

3. 注意事項(xiàng)

• GDI接口只能與帶有GDI的主控制器配合使用。
• 建議使用Arduino 1.8.10及以上版本。
• 如果SD卡接觸不良，可能會導(dǎo)致初始化失敗，此時(shí)可嘗試重新插拔。

五、示例代碼

1. 基本繪圖示例

此示例展示了如何在模塊上繪制點(diǎn)、圓、線和矩形等圖形。通過設(shè)置不同的顏色和參數(shù)，可以實(shí)現(xiàn)各種圖形的繪制效果。

#include "DFRobot_GDL.h" 

// 根據(jù)不同主板設(shè)置引腳
#if defined ARDUINO_SAM_ZERO 
#define TFT_DC 7 
#define TFT_CS 5 
#define TFT_RST 6 
#elif defined(ESP32) || defined(ESP8266) 
#define TFT_DC D3 
#define TFT_CS D4 
#define TFT_RST D5 
#else 
#define TFT_DC 2 
#define TFT_CS 3 
#define TFT_RST 4 
#endif 

DFRobot_ST7789_240x240_HW_SPI screen(TFT_DC, TFT_CS, TFT_RST); 

void setup() { 
  Serial.begin(115200); 
  screen.begin(); 
} 

void loop() { 
  testDrawPixel(); 
  testLine(); 
  testFastLines(COLOR_RGB565_PURPLE, COLOR_RGB565_YELLOW); 
  testRects(COLOR_RGB565_BLACK, COLOR_RGB565_WHITE); 
  testRoundRects(); 
  testCircles(24, COLOR_RGB565_BLUE); 
  testTriangles(COLOR_RGB565_YELLOW); 
  testPrint(); 
} 

// 測試?yán)L制像素點(diǎn)
void testDrawPixel() { 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  int x = 0; 
  int y = screen.height(); 
  for(int i = 0; i <= screen.width()/2; i += 10) { 
    for (x = screen.width() - i; x >= i; x -= 10) { 
      screen.drawPixel(x, y, COLOR_RGB565_ORANGE); 
      delay(10); 
    } 
    for (y = screen.height() - i; y >= i; y -= 10) { 
      screen.drawPixel(x, y, COLOR_RGB565_ORANGE); 
      delay(10); 
    } 
    for (x = i; x <= screen.width() - i + 1; x += 10) { 
      screen.drawPixel(x, y, COLOR_RGB565_ORANGE); 
      delay(10); 
    } 
    for (y = i; y <= screen.height() - i + 1; y += 10) { 
      screen.drawPixel(x, y, COLOR_RGB565_ORANGE); 
      delay(10); 
    } 
  } 
} 

// 測試?yán)L制直線
void testLine() { 
  uint16_t color = 0x00FF; 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  for (int16_t x = 0; x < screen.width(); x += 6) { 
    screen.drawLine(screen.width()/2, screen.height()/2, x, 0, color); 
  } 
  for (int16_t y = 0; y < screen.height(); y += 6) { 
    screen.drawLine(screen.width()/2, screen.height()/2, screen.width(), y, color += 0x0700); 
  } 
  for (int16_t x = screen.width(); x >= 0; x -= 6) { 
    screen.drawLine(screen.width()/2, screen.height()/2, x, screen.height(), color += 0x0700); 
  } 
  for (int16_t y = screen.height(); y >= 0; y -= 6) { 
    screen.drawLine(screen.width()/2, screen.height()/2, 0, y, color += 0x0700); 
  } 
} 

// 測試快速繪制直線（僅水平和垂直線）
void testFastLines(uint16_t color1, uint16_t color2) { 
  for (int16_t y = 0; y < screen.height(); y += 4) { 
    screen.drawFastHLine(0, y, screen.width(), color2); 
    delay(10); 
  } 
  for (int16_t x = 0; x < screen.width(); x += 3) { 
    screen.drawFastVLine(x, 0, screen.height(), color1); 
    delay(10); 
  } 
} 

// 測試?yán)L制矩形
void testRects(uint16_t color1, uint16_t color2) { 
  int16_t x = screen.width() - 12; 
  for (; x > 100; x -= screen.width()/40) { 
    screen.fillScreen(COLOR_RGB565_BLACK); 
    screen.drawRect(screen.width()/2 - x/2, screen.height()/2 - x/2, x, x, color2 += 0x0F00); 
    delay(100); 
  } 
  screen.fillRect(screen.width()/2 - x/2, screen.height()/2 - x/2, x, x, color2); 
  delay(100); 
  for (; x > 6; x -= screen.width()/40) { 
    screen.drawRect(screen.width()/2 - x/2, screen.height()/2 - x/2, x, x, color1); 
    delay(100); 
  } 
} 

// 測試?yán)L制圓角矩形
void testRoundRects() { 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  int color = 0xF00F; 
  int i; 
  int x = 0; 
  int y = 0; 
  int w = screen.width() - 3; 
  int h = screen.height() - 3; 
  for (i = 0; i <= 16; i += 2) { 
    screen.drawRoundRect(x, y, w, h, 20, color); 
    x += 5; 
    y += 5; 
    w -= 10; 
    h -= 10; 
    color += 0x0100; 
    delay(50); 
  } 
  for (i = 0; i <= 16; i += 2) { 
    screen.fillRoundRect(x, y, w, h, 10, color); 
    x += 5; 
    y += 5; 
    w -= 10; 
    h -= 10; 
    color += 0x0500; 
    delay(50); 
  } 
} 

// 測試?yán)L制圓形
void testCircles(uint8_t radius, uint16_t color) { 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  for (int16_t x = radius; x <= screen.width() - radius; x += radius * 2) { 
    for (int16_t y = radius; y <= screen.height() - radius; y += radius * 2) { 
      screen.drawCircle(x, y, radius, color); 
      if (x == y || x == -y || x == y + 2 * radius) { 
        color += 800; 
        screen.fillCircle(x, y, radius, color); 
      } 
      delay(100); 
    } 
  } 
} 

// 測試?yán)L制三角形
void testTriangles(uint16_t color) { 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  for (int16_t i = 0; i <= screen.width(); i += 24) { 
    screen.drawTriangle(i, 0, 0, screen.height() - i, screen.width() - i, screen.height(), color); 
  } 
  for (int16_t i = 0; i < screen.width(); i += 24) { 
    screen.drawTriangle(screen.width(), i * 4/3, 0, screen.height() - i * 4/3, i, 0, color); 
  } 
  for (int16_t i = 0; i < screen.width(); i += 24) { 
    screen.drawTriangle(screen.width(), i * 4/3, i, 0, screen.width() - i, screen.height(), color); 
  } 
  color = COLOR_RGB565_RED; 
  for (int16_t i = 0; i <= screen.width(); i += 24) { 
    screen.fillTriangle(i, 0, 0, screen.height() - i, screen.width() - i, screen.height(), color); 
  } 
  for (int16_t i = 0; i < screen.width(); i += 24) { 
    screen.fillTriangle(screen.width(), i * 4/3, 0, screen.height() - i * 4/3, i, 0, color += 100); 
  } 
  for (int16_t i = 0; i < screen.width(); i += 24) { 
    screen.fillTriangle(screen.width(), i * 4/3, i, 0, screen.width() - i, screen.height(), color += 100); 
  } 
} 

// 測試打印文本
void testPrint() { 
  int16_t color = 0x00FF; 
  screen.setTextWrap(false); 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  screen.setCursor(0, 50); 
  screen.setTextColor(color += 0x3000); 
  screen.setTextSize(0); 
  screen.println("Hello World!"); 
  screen.setTextColor(color += 0x3000); 
  screen.setTextSize(1); 
  screen.println("Hello World!"); 
  screen.setTextColor(color += 0x3000); 
  screen.setTextSize(2); 
  screen.println("Hello World!"); 
  screen.setTextColor(color += 0x3000); 
  screen.setTextSize(3); 
  screen.println("Hello World!"); 
  screen.setTextColor(color += 0x3000); 
  screen.setTextSize(4); 
  screen.println("Hello!"); 
  screen.setTextSize(5); 
  screen.print("Hello!"); 
  delay(2000); 
  screen.setCursor(0, 0); 
  screen.fillScreen(COLOR_RGB565_BLACK); 
  screen.setTextSize(2); 
  screen.setTextColor(color += 0x3000); 
  screen.print("a = "); 
  screen.setTextColor(color += 0x3000); 
  int a = 1234; 
  screen.println(a, 1); 
  screen.setTextColor(color += 0x3000); 
  screen.print(8675309, HEX); 
  screen.println("this is HEX!"); 
  screen.println(""); 
  screen.setTextColor(color += 0x0F00); 
  screen.println("running for: "); 
  screen.setTextColor(color += 0x0F00); 
  screen.print(millis()); 
  screen.setTextColor(color += 0x0F00); 
  screen.println("/1000 seconds."); 
  char *text = "Hi DFRobot!"; 
  screen.setTextColor(color += 0x0F00); 
  screen.setTextWrap(true); 
  screen.setTextSize(3); 
  screen.println(text); 
  delay(2000); 
}

2. 圖標(biāo)顯示示例

此示例展示了如何在屏幕上顯示一些常用圖標(biāo)。首先需要使用GIMP2將圖標(biāo)轉(zhuǎn)換為代碼，然后通過代碼在屏幕上顯示這些圖標(biāo)。

#include "DFRobot_GDL.h" 
#include "Icon.h" 

// 根據(jù)不同主板設(shè)置引腳
#if defined ARDUINO_SAM_ZERO 
#define TFT_DC 7 
#define TFT_CS 5 
#define TFT_RST 6 
#elif defined(ESP32) || defined(ESP8266) 
#define TFT_DC D3 
#define TFT_CS D4 
#define TFT_RST D5 
#else 
#define TFT_DC 2 
#define TFT_CS 3 
#define TFT_RST 4 
#endif 

DFRobot_ST7789_240x240_HW_SPI screen(TFT_DC, TFT_CS, TFT_RST); 

void setup() { 
  Serial.begin(115200); 
  screen.begin(); 
} 

void loop() { 
  int w = screen.width(); 
  int h = screen.height(); 
  int a = millis()/1000; 
  uint16_t color = 0x00FF; 
  screen.fillScreen(COLOR_RGB565_WHITE); 
  while (1) { 
    for (int i = 0; i < 12; i++) { 
      screen.fillRect(16, 16, w - 16 * 2, 35, COLOR_RGB565_WHITE); 
      screen.setTextWrap(false); 
      screen.setTextColor(0x30FF); 
      screen.setTextSize(3); 
      screen.setCursor(30, 30); 
      screen.println("Time:"); 
      screen.setTextColor(0x00FF); 
      screen.setTextSize(3); 
      screen.setCursor(120, 30); 
      a = millis()/1000; 
      screen.println(a, 1); 
      screen.fillRoundRect(w/2 - 48 - 12, h/2 - 16 - 8, 32 * 3 + 12 * 2, 32 + 8 * 2, 20, 0x0000); 
      for (int x = 0; x < 16; x++) { 
        screen.drawFastVLine(x, 0, h, color); 
      } 
      screen.drawFastHLine(16, 0, w - 16 * 2, color); 
      for (int y = 0; y < 16; y++) { 
        screen.drawFastHLine(16, y, w - 16 * 2, color);