There’s still lots left to do, but the core functionality — GPIO, UART, SPI ... but there’s some great HAL code hidden away in the Arduino-ESP32 codebase that’ll give you a head start.

If you use the Arduino IDE to program the ESP32, you might be interested ... [Andreas] shows how to modify the code, so that UART 1 maps to unused pins, which makes everything work.

The power of Espressif’s ESP32-S3 meets Arduino’s unmatched ... Provides support for both Micropython and Arduino code. Plug-and-play debugging with the Arduino IDE 2 eliminates the need ...

Arduino has introduced a Nano shaped board with a Wi-Fi and Bluetooth LE capable Espressif’s ESP32-S3 microcontroller ... Serial interfaces sharing these pins include SPI, I 2 C, I 2 S, UART and CAN ...