micropython/ports/esp32/boards/ESP32_GENERIC_S2/board.md

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The following files are firmware that should work on most ESP32-S2-based boards with 4MiB of flash, including WROOM, WROVER, and MINI modules.

This firmware supports configurations with and without SPIRAM (also known as PSRAM) and will auto-detect a connected SPIRAM chip at startup and allocate the MicroPython heap accordingly.