DFR0934 Fermion Example Code for Multi-Language Display

This guide provides an in-depth look at displaying multiple languages using Arduino and an OLED screen. It covers hardware preparation, software setup with the U8g2 library, detailed wiring diagrams, and the sample code to display 'Hello World' in Chinese, English, and Japanese.

Hardware Preparation

ESP32-E (or similar) x 1
1.51" Transparent OLED Display Module x1
Dupont Wires

Software Preparation

Arduino IDE
Download and install the U8g2 Arduino Library. (About how to install the library?)

Wiring Diagram

Connection

Wiring Detail Diagram:
Wiring Detail Diagram1
Wiring Detail Diagram2

Note: You can refer to the FPC cable color to access the correct position.

Other Preparation Work

Demos are stored in U8g2_Arduino-master > DFRobot_Demo > 1.51 inch OLED12864-SSD1309.
Ensure the correct U8G2 function is enabled in the code.
select the library

Sample Code

/*!
 * @file Language.ino
 * @brief Display multiple languages in U8G2
 * @n A demo for displaying “hello world！” in Chinese, English, Japanese
 * @n U8G2 Font GitHub Link：https://github.com/olikraus/u8g2/wiki/fntlistall
 * 
 * @copyright  Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 * @author [Ivey]([email protected])
 * @maintainer [Fary]([email protected])
 * @version  V1.0
 * @date  2019-10-15
 * @url https://github.com/DFRobot/U8g2_Arduino
*/

#include <Arduino.h>
#include <U8g2lib.h>

#include <SPI.h>


/*
 * Display hardware IIC interface constructor
 *@param rotation：U8G2_R0 Not rotate, horizontally, draw direction from left to right
           U8G2_R1 Rotate clockwise 90 degrees, drawing direction from top to bottom
           U8G2_R2 Rotate 180 degrees clockwise, drawing in right-to-left directions
           U8G2_R3 Rotate clockwise 270 degrees, drawing direction from bottom to top
           U8G2_MIRROR Normal display of mirror content (v2.6.x version used above)
           Note: U8G2_MIRROR need to be used with setFlipMode().
 *@param reset：U8x8_PIN_NONE Indicates that the pin is empty and no reset pin is used
 * Display hardware SPI interface constructor
 *@param  Just connect the CS pin (pins are optional)
 *@param  Just connect the DC pin (pins are optional)
 *
*/
#if defined ARDUINO_SAM_ZERO
#define OLED_DC  7
#define OLED_CS  5
#define OLED_RST 6
/*ESP32 */
#elif defined(ESP32)
#define OLED_DC  D2
#define OLED_CS  D6
#define OLED_RST D3
/*ESP8266*/
#elif defined(ESP8266)
#define OLED_DC  D4
#define OLED_CS  D6
#define OLED_RST D5
/*AVR series board*/
#else
#define OLED_DC  2
#define OLED_CS  3
#define OLED_RST 4
#endif
U8G2_SSD1309_128X64_NONAME2_1_4W_HW_SPI u8g2(/* rotation=*/U8G2_R0, /* cs=*/ OLED_CS, /* dc=*/ OLED_DC,/* reset=*/OLED_RST);



void setup(void) {
  u8g2.begin();    //init
  u8g2.enableUTF8Print();        // Enable UTF8 support for Arduino print（）function.
}

void loop(void) 
{
  /*@brief Set font direction  of all strings setFontDirection(uint8_t dir)
   *@param dir=0，rotate 0 degree
                 dir=1，rotate 90 degrees
                 dir=2，rotate 180 degrees
                 dir=3，rotate 270 degrees
   *@param When completed font setting, re-set the cursor position to display normally. Refer to API description for more details.
  */
  u8g2.setFontDirection(0); 
  /*
   * firstPage Change the current page number position to 0 
   * Revise content in firstPage and nextPage, re-render everything every time
   * This method consumes less ram space than sendBuffer
  */
  u8g2.firstPage();
  do {
    /*
     *The font takes up a lot of memory, so please use it with caution. Get your own Chinese encode for displaying only several fixed words.
     *Display by drawXBM or use controller with larger memory
     *Chinese Font：require a controller with larger memory than Leonardo  
     *Japanese Font：require a controller with larger memory than UNO
     *Korean Font：Arduino INO files of the current version do not support for displaying Korean, but it can displayed properly on the Screen
    */
    u8g2.setFont(u8g2_font_HelvetiPixelOutline_tr);
    u8g2.setCursor(/* x=*/0, /* y=*/15);    //Define the cursor of print function, any output of the print function will start at this position.
    u8g2.print("Hello World!");
    u8g2.setFont(u8g2_font_unifont_t_chinese2);
    u8g2.setCursor(0, 35);
    u8g2.print("你好世界");        // Chinese "Hello World" 
    u8g2.setFont(u8g2_font_b10_t_japanese1);
    u8g2.setCursor(0, 50);
    u8g2.print("こんにちは世界");
  } while ( u8g2.nextPage() );
  delay(1000);
}

Result

Result(There are many demo screens in this example. The following are some pictures in the demo screen ):
Result

Example Code for Arduino-Multi-Language Display