아두이노 코드 및 I2C를 사용한 SSD1306 OLED 128 x 32 디스플레이용 비디오

/*********************************************************************
This is an example for our monochrome OLEDs based on SSD1306 drivers.

This example is for a 128x32 size display using I2C.

If you get the error: Adafruit_GFX.h not found, download the Adafruit-GFX Library
https://github.com/adafruit/Adafruit-GFX-Library


Purchase this OLED module from Amazon: https://amzn.to/36zFvTb

Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information.
All text above, and the splash screen must be included in any redistribution.

 * Watch the video for this code to learn it fully.
  * Watch the video here: https://youtu.be/RjyulqVsz2o
 * This code is offered "as is" without any warranty.
 * Updated by Ahmad Shamshiri for Robojax.com video tutorial
 * on March 18, 2018 at 10:21 in Ajax, Ontario, Canada.
 * Please view other Robojax codes and videos at http://robojax.com/learn/arduino
 * If you are sharing this code, you must keep this copyright note.
 * 
*********************************************************************/

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

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2
double count=0;

/*
 * PIN connection:
 * Pin connection see: https://www.arduino.cc/en/Reference/Wire
 * for UNO: SDA to A4, SCL to A5
 * for Mega2560: SDA to 20, SCL to 21
 * for Leonardo: SDA to 2, SCL to 3
 * for Due: SDA to 20, SCL to 21
 * VCC to 5V
 * GND to GND :-)
 */


// this is the Width and Height of Display which is 128 x 32
#define LOGO16_GLCD_HEIGHT 32
#define LOGO16_GLCD_WIDTH  128 


#if (SSD1306_LCDHEIGHT != 32)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif

void setup()   {                
  Serial.begin(9600);

  // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // initialize with the I2C addr 0x3C (for the 128x32)
  display.display();
  delay(2000);
   // Clear the buffer.
  display.clearDisplay(); 
}


void loop() {
  String vString =  String(count, 3);// using a float and the 
  display.clearDisplay();
  robojaxText("Voltage:          ", 4, 3, 1, false);
  robojaxText(vString, 72, 3, 1, false);
  robojaxText("V", 110, 3, 1, false);
  robojaxText("Temperature: 32C", 4, 11, 1, false);
  robojaxText("Capacity:   92.86L", 4, 21, 1, false);
  //display.drawLine(1, 37, 100, 37, WHITE);
 display.drawRect(1, 1, 126,31, WHITE);
  //display.drawCircle(63,31, 31, WHITE);
   //display.startscrollright(0x00, 0x0F);
  display.display();
  count +=0.173;
   delay(2000); 
}


/*
 * robojaxText(String text, int x, int y,int size, boolean d)
 * text is the text string to be printed
 * x is the integer x position of text
 * y is the integer y position of text
 * size is the text size, 1, 2, 3 etc
 * d is either true or false.  If true, the display is updated.
 */
void robojaxText(String text, int x, int y,int size, boolean d) {

  display.setTextSize(size);
  display.setTextColor(WHITE);
  display.setCursor(x,y);
  display.println(text);
  if(d){
    display.display();
  }
  
  //delay(100);
}