turbo: SAMx5x boards loader enable native .mpy default - #11356
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Turn on CIRCUITPY_LOAD_NATIVE for SAMD51, SAME51 and SAME54 boards. It fits on every board except these ten, which already have little flash to spare and opt out in their own mpconfigboard.mk: circuitbrains_deluxe_m4, datalore_ip_m4, hallowing_m4_express, kicksat-sprite, mini_sam_m4, monster_m4sk, openbook_m4, pewpew_m4, silicognition-m4-shim, uartlogger2 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Sep 13, 2026
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Thanks!
I will work on some translation shrink stuff which may make a lot of these fit again.
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What
Enables the turbo loader (
CIRCUITPY_LOAD_NATIVE) by default on SAMx5x.32 of 42 boards fit. The other 10 opt out in
mpconfigboard.mk.Follow-up to #11332 (RP2) and #11355 (STM32F4).
Hardware tested
Metro M4 AirLift Lite
10.3.0-66-g55984e753c, which includes this commit..mpy.mpy@native.mpyHow I tested it
All 42 SAMx5x boards built in their tightest CI language with GCC 15.2.1.
Hardware used
vsum.pyfrom #11332 pluspixels.py.metro_m4_expressfrfeather_m4_expressfrpygamerfrpybadgefrfeather_m4_canfrpewpew_m4plmonster_m4skjamini_sam_m4jahallowing_m4_expressjauartlogger2jaopenbook_m4jasilicognition-m4-shimjakicksat-spriterucircuitbrains_deluxe_m4jadatalore_ip_m4jaScope
nRF52 and Xtensa loader support will be separate PRs. SAMD21 does not currently fit.
AI assistance
Claude Code was used.