ESP32 Drive I2C-OLED -Duino
tags: Single -chip machine stm32 Embedded hardware
ESP32 I2C-OLED display
IDE：Arduino
Foreword
- I have made some Arduino libraries before to understand the format of the Arduino library. Originally, I planned to transplant the I2C-OLED driver of the STM32 directly. However, I kept making mistakes. I was too lazy to make wheels, so I started to record it by the way.
Hardware connection
The ESP-Weoom-32 small module is used.
| iic | ESP32 pin | Function |
|---|---|---|
| SDA | GPIO21 | Data line |
| SCL | GPIO22 | Clock line |
Get the library file
- Link:esp8266-oled-ssd1306, Lien Library from GitHub, and then put it in the libraries folder under the Arduino path.
Primary
#include <Wire.h>
#include "SSD1306.h"
SSD1306 display(0x3c, 21, 22);
void setup() {
display.init();
display.drawString(0, 0, "Hello World");
display.display();
}
void loop() {}
display effect
- At the beginning, the effect was like this, and the display direction and font size had not been adjusted.
Reference information
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