View source for OLED Display

==Synopsis==
Demo of different graphics and test modes of SSD1306.
==Code==
<syntaxhighlight lang="C++" line='line'>
//Arduino UNO
//SSD1306
////Pin A4 SDA
////Pin A5 SCL
#include <SPI.h>
#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)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

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

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C))
  { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  display.clearDisplay();


  testdrawchar();      // Draw characters of the default font

//  testdrawstyles();    // Draw 'stylized' characters

//  testscrolltext();    // Draw scrolling text

  // Invert and restore display, pausing in-between
  display.invertDisplay(true);
  delay(1000);
  display.invertDisplay(false);
  delay(1000);

}


void loop() {
}


void testdrawchar(void) {
  display.clearDisplay();

  display.setTextSize(1);      // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE); // Draw white text
  display.setCursor(0, 0);     // Start at top-left corner
  display.cp437(true);         // Use full 256 char 'Code Page 437' font

while(1){
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("    CoolShit (TM)    "));
  display.println(F("   Battery Monitor   "));
  display.write(201);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(187);
  display.println(F(""));
  display.write(186);
  display.print(F(" A1=3.176 A2=3.175 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" A3=3.176 A4=3.176 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" A5=3.177 A6=3.177 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" A7=3.177 A8=3.178 "));
  display.write(186);
  display.println(F(""));
  display.write(200);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(188);

  display.display();
  delay(4000);
  display.invertDisplay(true);
  delay(500);
  display.invertDisplay(false);
  display.clearDisplay();
  delay(500);

  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("    CoolShit (TM)    "));
  display.println(F("   Battery Monitor   "));
  display.write(201);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(187);
  display.println(F(""));
  display.write(186);
  display.print(F(" B1=3.231 B2=3.232 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" B3=3.231 B4=3.222 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" B5=3.222 B6=3.223 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" B7=3.234 B8=3.245 "));
  display.write(186);
  display.println(F(""));
  display.write(200);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(188);


  display.display();
  delay(4000);
  display.invertDisplay(true);
  delay(500);
  display.invertDisplay(false);
  display.clearDisplay();
  delay(500);


  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("    CoolShit (TM)    "));
  display.println(F("   Battery Monitor   "));
  display.write(201);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(187);
  display.println(F(""));
  display.write(186);
  display.print(F(" C1=3.166 C2=3.165 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" C3=3.165 C4=3.165 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" C5=3.164 C6=3.153 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" C7=3.164 C8=3.163 "));
  display.write(186);
  display.println(F(""));
  display.write(200);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(188);


  display.display();
  delay(4000);
  display.invertDisplay(true);
  delay(500);
  display.invertDisplay(false);
  display.clearDisplay();
  delay(500);


  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("    CoolShit (TM)    "));
  display.println(F("   Battery Monitor   "));
  display.write(201);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(187);
  display.println(F(""));
  display.write(186);
  display.print(F(" D1=3.185 D2=3.176 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" D3=3.176 D4=3.175 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" D5=3.174 D6=3.173 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" D7=3.183 D8=3.188 "));
  display.write(186);
  display.println(F(""));
  display.write(200);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(188);


  display.display();
  delay(4000);
  display.invertDisplay(true);
  delay(500);
  display.invertDisplay(false);
  display.clearDisplay();
  delay(500);


  display.setCursor(0,0);             // Start at top-left corner
  display.println(F("    CoolShit (TM)    "));
  display.println(F("   Battery Monitor   "));
  display.write(201);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(187);
  display.println(F(""));
  display.write(186);
  display.print(F(" E1=3.222 E2=3.221 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" E3=3.224 E4=3.214 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" E5=3.223 E6=3.224 "));
  display.write(186);
  display.println(F(""));
  display.write(186);
  display.print(F(" E7=3.233 E8=3.223 "));
  display.write(186);
  display.println(F(""));
  display.write(200);
for(int i=0;i<19;i++)
  display.write(205);
  display.write(188);


  display.display();
  delay(4000);
  display.invertDisplay(true);
  delay(500);
  display.invertDisplay(false);
  display.clearDisplay();
  delay(500);


}
}


</syntaxhighlight>