Arduino 3.x is not officially suported by PlatformIO - see #1225
Due to the lack of further development of the Espressif 32 Arduino Core for PlatformIO, the pioarduino fork was created.
platform-espressif32 | Arduino Core | based on ESP-IDF |
---|---|---|
51.03.10+rc1 | 3.1.0-rc1 | [5.3.0](https://github.com/espres |