2_Arduino-ESP32_呼吸灯,OLED_I2C_0.96(SSD1306),TFT_LCD_IPS_SPI_1.3(ST7789)

1_呼吸灯

---

#define LED_PWM 2 //把调用的GPIO引脚进行了一个宏定义
 int freq = 5000;
 int ledChannel = 0;
 int resolution = 8;

void setup() {
ledcSetup(ledChannel, freq, resolution);
 ledcAttachPin(LED_PWM, ledChannel);
}

void loop() {
  
for (int dutyCycle = 0; dutyCycle <= 255; dutyCycle++) {
 ledcWrite(ledChannel, dutyCycle);
 delay(7);
 }

for (int dutyCycle = 255; dutyCycle >= 0; dutyCycle--) {
 ledcWrite(ledChannel, dutyCycle);
 delay(7);
 }

}
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2_OLED_I2C_0.96(SSD1306)

---

SCL=22
SDA=21

下载并把库放在C:\Program Files (x86)\Arduino\libraries
Adafruit-GFX-Library
Adafruit_SSD1306

2.1_英文显示

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

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

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();

  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 10);
  // Display static text
  display.println("Hello, world!");
  display.display(); 
}

void loop() {
  
}
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2.2_中文显示

取模软件：PCtoLCD2002完美版

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

//取16X16汉字字模 逐行式 顺向高位在前
static const unsigned char PROGMEM str1[] =
{0x08,0x20,0x08,0x20,0xFF,0xFE,0x08,0x20,0x00,0x00,0x1F,0xF0,0x10,0x10,0x1F,0xF0,
0x10,0x10,0x1F,0xF0,0x01,0x00,0x7F,0xFC,0x02,0x80,0x04,0x40,0x18,0x30,0xE0,0x0E};/*莫*/
static const unsigned char PROGMEM str2[] =
{0x00,0x40,0x44,0x40,0x28,0x40,0x10,0x40,0x29,0x44,0x49,0x44,0x89,0x48,0x0A,0x50,
0x18,0x40,0x28,0xA0,0x48,0xA0,0x88,0x90,0x09,0x10,0x09,0x08,0x52,0x04,0x24,0x02};/*狄*/
void setup() {
  Serial.begin(9600);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);//开始启动的语句
  display.setTextColor(WHITE);//开像素点发光
  display.clearDisplay();//清屏

  display.drawBitmap(5, 10, str1, 16, 16,1); 
  display.drawBitmap(21, 10, str2, 16, 16,1);
  display.display();         
}
void loop() {
  
}
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3_TFT_LCD_IPS_SPI_1.3(ST7789)

---

SDA=23
SCL=18

下载并把库放在C:\Program Files (x86)\Arduino\libraries
Adafruit-GFX-Library
github.com/adafruit/Ad…

3.1_演示显示

#include <Adafruit_GFX.h> 
#include <Adafruit_ST7789.h> 

#define TFT_CS -1
#define TFT_RST 22 
#define TFT_DC 21

// For 1.3", 1.54", and 2.0" TFT with ST7789:
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);


float p = 3.1415926;

void setup(void) {
  Serial.begin(9600);
  Serial.print(F("Hello! ST77xx TFT Test"));

  tft.init(240, 240,SPI_MODE2);           // Init ST7789 240x240
  tft.setRotation(2);
  
  Serial.println(F("Initialized"));

  uint16_t time = millis();
  tft.fillScreen(ST77XX_BLACK);
  time = millis() - time;

  Serial.println(time, DEC);
  delay(500);

  // large block of text
  tft.fillScreen(ST77XX_BLACK);
  testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST77XX_WHITE);
  delay(1000);

  // tft print function!
  tftPrintTest();
  delay(4000);

  // a single pixel
  tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
  delay(500);

  // line draw test
  testlines(ST77XX_YELLOW);
  delay(500);

  // optimized lines
  testfastlines(ST77XX_RED, ST77XX_BLUE);
  delay(500);

  testdrawrects(ST77XX_GREEN);
  delay(500);

  testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
  delay(500);

  tft.fillScreen(ST77XX_BLACK);
  testfillcircles(10, ST77XX_BLUE);
  testdrawcircles(10, ST77XX_WHITE);
  delay(500);

  testroundrects();
  delay(500);

  testtriangles();
  delay(500);

  mediabuttons();
  delay(500);

  Serial.println("done");
  delay(1000);
}

void loop() {
  tft.invertDisplay(true);
  delay(500);
  tft.invertDisplay(false);
  delay(500);
}

void testlines(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, 0, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, 0, 0, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(0, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
    delay(0);
  }

  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
    delay(0);
  }
  for (int16_t y=0; y < tft.height(); y+=6) {
    tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
    delay(0);
  }
}

void testdrawtext(char *text, uint16_t color) {
  tft.setCursor(0, 0);
  tft.setTextColor(color);
  tft.setTextWrap(true);
  tft.print(text);
}

void testfastlines(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t y=0; y < tft.height(); y+=5) {
    tft.drawFastHLine(0, y, tft.width(), color1);
  }
  for (int16_t x=0; x < tft.width(); x+=5) {
    tft.drawFastVLine(x, 0, tft.height(), color2);
  }
}

void testdrawrects(uint16_t color) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=0; x < tft.width(); x+=6) {
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
  }
}

void testfillrects(uint16_t color1, uint16_t color2) {
  tft.fillScreen(ST77XX_BLACK);
  for (int16_t x=tft.width()-1; x > 6; x-=6) {
    tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
    tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
  }
}

void testfillcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=radius; x < tft.width(); x+=radius*2) {
    for (int16_t y=radius; y < tft.height(); y+=radius*2) {
      tft.fillCircle(x, y, radius, color);
    }
  }
}

void testdrawcircles(uint8_t radius, uint16_t color) {
  for (int16_t x=0; x < tft.width()+radius; x+=radius*2) {
    for (int16_t y=0; y < tft.height()+radius; y+=radius*2) {
      tft.drawCircle(x, y, radius, color);
    }
  }
}

void testtriangles() {
  tft.fillScreen(ST77XX_BLACK);
  int color = 0xF800;
  int t;
  int w = tft.width()/2;
  int x = tft.height()-1;
  int y = 0;
  int z = tft.width();
  for(t = 0 ; t <= 15; t++) {
    tft.drawTriangle(w, y, y, x, z, x, color);
    x-=4;
    y+=4;
    z-=4;
    color+=100;
  }
}

void testroundrects() {
  tft.fillScreen(ST77XX_BLACK);
  int color = 100;
  int i;
  int t;
  for(t = 0 ; t <= 4; t+=1) {
    int x = 0;
    int y = 0;
    int w = tft.width()-2;
    int h = tft.height()-2;
    for(i = 0 ; i <= 16; i+=1) {
      tft.drawRoundRect(x, y, w, h, 5, color);
      x+=2;
      y+=3;
      w-=4;
      h-=6;
      color+=1100;
    }
    color+=100;
  }
}

void tftPrintTest() {
  tft.setTextWrap(false);
  tft.fillScreen(ST77XX_BLACK);
  tft.setCursor(0, 30);
  tft.setTextColor(ST77XX_RED);
  tft.setTextSize(1);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_YELLOW);
  tft.setTextSize(2);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_GREEN);
  tft.setTextSize(3);
  tft.println("Hello World!");
  tft.setTextColor(ST77XX_BLUE);
  tft.setTextSize(4);
  tft.print(1234.567);
  delay(1500);
  tft.setCursor(0, 0);
  tft.fillScreen(ST77XX_BLACK);
  tft.setTextColor(ST77XX_WHITE);
  tft.setTextSize(0);
  tft.println("Hello World!");
  tft.setTextSize(1);
  tft.setTextColor(ST77XX_GREEN);
  tft.print(p, 6);
  tft.println(" Want pi?");
  tft.println(" ");
  tft.print(8675309, HEX); // print 8,675,309 out in HEX!
  tft.println(" Print HEX!");
  tft.println(" ");
  tft.setTextColor(ST77XX_WHITE);
  tft.println("Sketch has been");
  tft.println("running for: ");
  tft.setTextColor(ST77XX_MAGENTA);
  tft.print(millis() / 1000);
  tft.setTextColor(ST77XX_WHITE);
  tft.print(" seconds.");
}

void mediabuttons() {
  // play
  tft.fillScreen(ST77XX_BLACK);
  tft.fillRoundRect(25, 10, 78, 60, 8, ST77XX_WHITE);
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_RED);
  delay(500);
  // pause
  tft.fillRoundRect(25, 90, 78, 60, 8, ST77XX_WHITE);
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_GREEN);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_GREEN);
  delay(500);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_BLUE);
  delay(50);
  // pause color
  tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_RED);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_RED);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_GREEN);
}
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3.2_中文显示

取模软件：PCtoLCD2002完美版

#include <Adafruit_GFX.h> 
#include <Adafruit_ST7789.h> 

#define TFT_CS -1
#define TFT_RST 22 
#define TFT_DC 21

// For 1.3", 1.54", and 2.0" TFT with ST7789:
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

//取16X16汉字字模 逐行式 顺向高位在前
static const unsigned char PROGMEM str1[] =
{0x08,0x20,0x08,0x20,0xFF,0xFE,0x08,0x20,0x00,0x00,0x1F,0xF0,0x10,0x10,0x1F,0xF0,
0x10,0x10,0x1F,0xF0,0x01,0x00,0x7F,0xFC,0x02,0x80,0x04,0x40,0x18,0x30,0xE0,0x0E};/*莫*/

static const unsigned char PROGMEM str2[] =
{0x00,0x40,0x44,0x40,0x28,0x40,0x10,0x40,0x29,0x44,0x49,0x44,0x89,0x48,0x0A,0x50,
0x18,0x40,0x28,0xA0,0x48,0xA0,0x88,0x90,0x09,0x10,0x09,0x08,0x52,0x04,0x24,0x02};/*狄*/

void setup(void) {
 
  tft.init(240, 240,SPI_MODE2);
  tft.setRotation(2);
  tft.fillScreen(ST77XX_BLACK);

  tft.drawBitmap(0,0,str1,16,16,ST77XX_WHITE);
  tft.drawBitmap(16,0,str2,16,16,ST77XX_WHITE);
}

void loop() {
 
}
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3.3_图片显示

修改图片尺寸工具

LCD图像转换器

#include <Adafruit_GFX.h> 
#include <Adafruit_ST7789.h> 
#include "bitmapsLarge.h"

#define TFT_CS -1
#define TFT_RST 22 
#define TFT_DC 21

// For 1.3", 1.54", and 2.0" TFT with ST7789:
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

void setup(void) {
 
  tft.init(240, 240,SPI_MODE2);
  tft.setRotation(2);
  tft.fillScreen(ST77XX_BLACK);

  int h = 240,w = 240, row, col, buffidx=0;
  for (row=0; row<h; row++) { // For each scanline...
    for (col=0; col<w; col++) { // For each pixel...
      //To read from Flash Memory, pgm_read_XXX is required.
      //Since image is stored as uint16_t, pgm_read_word is used as it uses 16bit address
      tft.drawPixel(col, row, pgm_read_word(evive_in_hand + buffidx));
      buffidx++;
    } // end pixel
  }
  
}

void loop() {
 
}
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bitmapsLarge.h

#ifndef BITMAPS_LARGE_H
#define BITMAPS_LARGE_H

const uint16_t evive_in_hand[] PROGMEM{
    //放置图片转换代码
};

#endif
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