[esp_lcd](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/lcd.html) supports I2C interfaced OLED LCD, whose color depth is usually 1bpp.
This example shows how to make use of the SSD1306 panel driver from `esp_lcd` component to facilitate the porting of LVGL library. In the end, example will display a scrolling text on the OLED screen. For more information about porting the LVGL library, you can also refer to another [lvgl porting example](../i80_controller/README.md).
## How to use the example
### Hardware Required
* An ESP development board
* An SSD1306 OLED LCD, with I2C interface
* An USB cable for power supply and programming
### Hardware Connection
The connection between ESP Board and the LCD is as follows:
The GPIO number used by this example can be changed in [lvgl_example_main.c](main/i2c_oled_example_main.c). Please pay attention to the I2C hardware device address as well, you should refer to your module's spec and schematic to determine that address.
### Build and Flash
Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project. A scrolling text will show up on the LCD as expected.
The first time you run `idf.py` for the example will cost extra time as the build system needs to address the component dependencies and downloads the missing components from the ESP Component Registry into `managed_components` folder.
See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
