Example Code for Arduino-Multiple Font Display

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

Wiring Detail Diagram:

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

Other Preparation Work

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

Sample Code

/*!
 * @file Font.ino
 * @brief Show several U8G2-supported fonts
 * @n U8G2 supports multiple fonts, and this demo is just a few fonts to display
 * @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();       //Initialize the function
  u8g2.setFontPosTop();  /**When you use drawStr to display strings, the default criteria is to display the lower-left
  * coordinates of the characters.The function can be understood as changing the coordinate position to the upper left
  * corner of the display string as the coordinate standard.*/
}


void draw(int a )
{
   switch(a)
   {
     case 0: 
     u8g2.setFont(u8g2_font_bubble_tr   );    //Set the font set, which is“u8g2_font_bubble_tr“
     u8g2.drawStr(/* x=*/0,/* y=*/0, "DFR123");       //Start drawing strings at the coordinates of x-0, y-0 “DFR123”
     u8g2.setFont(u8g2_font_lucasarts_scumm_subtitle_o_tf     );
     u8g2.drawStr(0, 25, "DFR123");  
     u8g2.setFont(u8g2_font_HelvetiPixelOutline_tr     );
     u8g2.drawStr(0, 45, "DFR123"); 
     break;            
     case 1: 
     u8g2.setFont(u8g2_font_tenstamps_mr    );
     u8g2.drawStr(0,0, "DFR123");  
     u8g2.setFont(u8g2_font_jinxedwizards_tr      );
     u8g2.drawStr(56, 16, "DFR123");  
     u8g2.setFont(u8g2_font_secretaryhand_tr      );
     u8g2.drawStr(0, 32, "DFR123"); 
     u8g2.setFont(u8g2_font_freedoomr10_mu       );
     u8g2.drawStr(56, 48, "DFR123"); 
     break;                     
   }       
}

 void loop()
{
  for( int i = 0; i <2 ; i++)
  {
  /*
       * firstPage will change the current page number position to 0
       * When modifications are between firstpage and nextPage, they will be re-rendered at each time.
       * This method consumes less ram space than sendBuffer
   */ 
    u8g2.firstPage();   
    do
      {
          draw(i);
      } while( u8g2.nextPage() );
      delay(2000);
  }
}