Update pins_arduino.h for lolin_c3_pico to define LED as RGB rather than the default GRB #11851

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Merged

me-no-dev merged 3 commits into espressif:master from mitra42:patch-2

Sep 22, 2025

Merged

Update pins_arduino.h for lolin_c3_pico to define LED as RGB rather than the default GRB #11851

me-no-dev merged 3 commits into espressif:master from mitra42:patch-2

Sep 22, 2025

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@mitra42 mitra42 commented Sep 17, 2025

Description of Change

Please describe your proposed Pull Request and it's impact.

On the lolin_c3_pico the LED is RGB, but RGB_BUILTIN_LED_COLOR_ORDER defaults to GRB which is correct for many Neopixel LEDs

Test Scenarios

Please describe on what Hardware and Software combinations you have tested this Pull Request and how.

Tested on Lolin C3 Pico - with Frugal_IoT system, looked carefully at call to rgbLedWrite which was correctly sending rgb in that order, BUT the LED was coming up the wrong color because of the default to presume the actual write to LED should be GRB.

I'm using PlatformIO with specific config

[env:sht30_lolin_c3_pico]
platform = espressif32
board = lolin_c3_mini 
board_build.variant = lolin_c3_pico
build_flags = 
 ${common.build_flags}
 -D ARDUINO_LOLIN_C3_PICO ; if using C3_PICO use lolin_c3_mini as board and define here
lib_compat_mode = strict
board_build.partitions = huge_app.csv
lib_deps = 
 ${common.lib_deps}

Related links

Please provide links to related issue, PRs etc.
N/A
(eg. Closes #number of issue)

@mitra42


 Update pins_arduino.h for lolin_c3_pico to define LED as RGB rather t...

879e14d

...han the default GRB

@mitra42 mitra42 requested a review from P-R-O-C-H-Y as a code owner

September 17, 2025 12:04

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github-actions bot commented Sep 17, 2025 •

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the commit message "Update pins_arduino.h for lolin_c3_pico to define LED as RGB rather than the default GRB":
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Please fix these commit messages - here are some basic tips:

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