turbo: SAMD21 boards loader enable native .mpy default - #11397
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Turn on CIRCUITPY_LOAD_NATIVE for SAMD21 boards. It fits on 25 of them. The other fifty have too little flash to spare and opt out in their own mpconfigboard.mk: adafruit_trrs_trinkey_m0, arduino_mkr1300, arduino_mkrzero, arduino_nano_33_iot, arduino_zero, bast_pro_mini_m0, catwan_usbstick, circuitbrains_basic_m0, circuitplayground_express_displayio, cp_sapling_m0, cp_sapling_m0_revb, datum_distance, datum_imu, datum_light, datum_weather, dynossat_edu_eps, escornabot_makech, feather_m0_adalogger, feather_m0_basic, feather_m0_express, feather_m0_rfm69, feather_m0_rfm9x, feather_m0_supersized, fluff_m0, gemma_m0, huntercat_nfc, itsybitsy_m0_express, meowmeow, metro_m0_express, ndgarage_ndbit6, ndgarage_ndbit6_v2, pewpew_lcd, pewpew10, picoplanet, pyruler, qtpy_m0, qtpy_m0_haxpress, seeeduino_xiao, sensebox_mcu, shirtty, snekboard, sparkfun_qwiic_micro_no_flash, sparkfun_redboard_turbo, sparkfun_samd21_dev, sparkfun_samd21_mini, stackrduino_m0_pro, stringcar_m0_express, trinket_m0, trinket_m0_haxpress, uchip Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Closing this for now. We can revisit whether native .mpy loading makes sense on certain SAMD21 boards despite the limited RAM. |
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What
Enables the turbo loader (
CIRCUITPY_LOAD_NATIVE) by default on SAMD21.25 of 75 boards fit. The other 50 opt out in
mpconfigboard.mk.Follows #11332, #11355, #11356 and #11360.
How I tested it
Hardware ran
10.4.0-alpha.1-30-g5762872053on an Ubuntu host..mpy, 4 KB buffer.mpyvs@native.mpy@micropython.viperin sourceSyntaxError.mpyValueError: incompatible .mpy archMetro M0 Express opts out. It ran an
en_USbuild with the loader forced on (416 B free).vsum used a 4 KB buffer, since 25.6 KB does not fit in 32 KB RAM. Medians of 5 runs.
Boards were picked from main's Build CI flash free bytes at
82b255fe56, all languages. The loader costs about 1.9 KB.adafruit_proxlight_trinkey_m0ruadafruit_pixel_trinkey_m0ruhallowing_m0_expressde_DE50 opt-outs, flash free on main without the loader
catwan_usbstickrusensebox_mcurudynossat_edu_epsde_DEpewpew10rucircuitplayground_express_displayiode_DEstringcar_m0_expressde_DEescornabot_makechrumeowmeowrufeather_m0_rfm9xrucp_sapling_m0rubast_pro_mini_m0rufeather_m0_rfm69rucircuitbrains_basic_m0de_DEstackrduino_m0_prode_DEpicoplanetrugemma_m0rufeather_m0_supersizedde_DEfeather_m0_expressde_DEfluff_m0ruadafruit_trrs_trinkey_m0rushirttyruarduino_nano_33_iotrutrinket_m0rumetro_m0_expressde_DEdatum_lightrudatum_weatherrusparkfun_redboard_turbode_DEdatum_distanceruitsybitsy_m0_expressde_DEsparkfun_qwiic_micro_no_flashrundgarage_ndbit6_v2rucp_sapling_m0_revbruuchiprusnekboardde_DEhuntercat_nfcde_DEqtpy_m0rundgarage_ndbit6rusparkfun_samd21_minirufeather_m0_basicrupyrulerrutrinket_m0_haxpressde_DEseeeduino_xiaoruarduino_mkrzerorudatum_imurusparkfun_samd21_devruqtpy_m0_haxpressde_DEarduino_mkr1300ruarduino_zerorufeather_m0_adaloggerrupewpew_lcdde_DEAI assistance
Claude Code was used.