OLED-SDK-dat

• OLED-driver-dat

OLED Libs for arduino

Name                                               Installed Available   Location Description
ACROBOTIC SSD1306                                  1.0.1     -           user     -
ESP8266 and ESP32 OLED driver for SSD1306 displays 4.6.1     -           user     -
SSD1306wire                                        2.0.1     -           user     -

OLED Memory Layout

The following diagram shows the display memory layout: 64×128 bits

Data Types

Data written to the OLED screen is divided into two types:

1. Command Type: Controls cursor position and other settings

   • Format: 0x00 + command_value
   • Example: Setting cursor position

2. Data Type: Writes values to the display buffer

   • Format: 0x01 + data_value
   • Example: Writing pixel data

Display Principle

The display works by:

1. Buffer Allocation: Create a buffer matching the screen size

   • Buffer Size: 64 × 128 ÷ 8 = 1024 bytes

2. Buffer Modification: Update the buffer content as needed

3. Display Refresh: Send the entire buffer content to display memory

   • Refresh Method: Update all columns in the display memory simultaneously

code

init

SSD1306Wire display(0x3c, 12, 2);   // ADDRESS, SDA, SCL , ESP32 pin IO12 for SDA and IO2 for SCL
SSD1306Wire display(0x3c, 15, 13);

arduino OLED library

• SSD1306ascii

ESP8266_and_ESP32_OLED_driver_for_SSD1306_displays

code

display.init();
delay(50);
display.clear();
display.setTextAlignment(TEXT_ALIGN_LEFT);

display.setFont(ArialMT_Plain_16);
display.drawString(0, 0, "Temp: ");
display.drawString(50, 0, String(temperature));

display.setFont(ArialMT_Plain_16);
display.drawString(0, 20, "Press: ");
display.drawString(50, 20, String(pressure));

common OLED I2C address

• 0x3C = the version we are selling

library

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

ref

• OLED-dat