8000 /esp32/boards: Add LOLIN_S3_PRO board definition. by mattytrentini · Pull Request #17290 · micropython/micropython · GitHub
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/esp32/boards: Add LOLIN_S3_PRO board definition. #17290

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Summary

Added a board definition for the Wemos Lolin S3 Pro.

Testing

I deployed the firmware to my S3 Pro, it appeared to work fine. Tested the filesystem (since a key feature of this board is the 16MB flash) and the GRB (not RGB) LED:

MicroPython v1.25.0-preview.575.g076e07197 on 2025-05-12; LOLIN_S3_PRO with ESP32S3
Type "help()" for more information.
>>>
paste mode; Ctrl-C to cancel, Ctrl-D to finish
=== import os
=== fs_stat = os.statvfs('/')
=== fs_size = fs_stat[0] * fs_stat[2]
=== fs_free = fs_stat[0] * fs_stat[3]
=== print(f"File System Size {fs_size:,} - Free Space {fs_free:,}")
===
File System Size 14,680,064 - Free Space 14,667,776
>>> from machine import Pin
>>> from neopixel import NeoPixel
>>> neo = NeoPixel(Pin.board.RGB_LED, 1)
>>> NeoPixel.ORDER = (0, 1, 2, 3)  # GRB rather than RGB
>>> neo[0] = (40, 0, 0)
>>> neo.write() # Red
>>> neo[0] = (0, 40, 0)
>>> neo.write() # Green
>>> neo[0] = (0, 0, 40)
>>> neo.write() # Blue

Trade-offs and Alternatives

A user could define their own custom board. We could also extend ESP32_GENERIC_S3 to support 16MB models (which may be wroth doing as well).

See #17217 for a request for this board.

@mattytrentini mattytrentini added the board-definition New or updated board definition files. Combine with a port- label. label May 12, 2025
@mattytrentini mattytrentini linked an issue May 12, 2025 that may be closed by this pull request
Request: Port for Lolin ESP32-S3 Pro (16MB flash, 8MB SPRAM) #17217
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@mattytrentini mattytrentini mentioned this pull request May 13, 2025
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@dpgeorge dpgeorge mentioned this pull request May 13, 2025
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@mattytrentini
/esp32/boards: Add LOLIN_S3_PRO board definition.
3162970 
Signed-off-by: Matt Trentini <matt.trentini@gmail.com>
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board-definition New or updated board definition files. Combine with a port- label. port-esp32
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Request: Port for Lolin ESP32-S3 Pro (16MB flash, 8MB SPRAM)
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