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update micro:bit v2 #2639

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Merged
merged 3 commits into from
Jun 11, 2025
Merged

update micro:bit v2 #2639

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41551c8
ram size already was 128k, update wrong info
fanoush Jun 10, 2025
f18e6e0
enable JIT for micro:bit V2
fanoush Jun 10, 2025
3d354f4
sync micro:bit V2 board with others (MTU 53, 2 centrals, packed symbo…
fanoush Jun 10, 2025
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13 changes: 9 additions & 4 deletions boards/MICROBIT2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,6 @@

# TODO:
# Move to SDK17 with proper nRF52833 support
# - expand RAM to 128k
# Proper event handling for accelerometer/etc
# Functions for sound

Expand All @@ -39,11 +38,17 @@
# 'NET',
'GRAPHICS',
'NEOPIXEL',
'TENSORFLOW'
'TENSORFLOW',
'JIT'
],
'makefile' : [
'DEFINES += -DCONFIG_GPIO_AS_PINRESET', # Allow the reset pin to work
'DEFINES += -DNRF_BLE_GATT_MAX_MTU_SIZE=53 -DNRF_BLE_MAX_MTU_SIZE=53', # increase MTU from default of 23
'DEFINES += -DCENTRAL_LINK_COUNT=2 -DNRF_SDH_BLE_CENTRAL_LINK_COUNT=2', # allow two outgoing connections at once
'LDFLAGS += -Xlinker --defsym=LD_APP_RAM_BASE=0x3290', # set RAM base to match MTU=53 + CENTRAL_LINK_COUNT=2
'LDFLAGS += -nostartfiles', 'ASFLAGS += -D__STARTUP_CLEAR_BSS -D__START=main', # Save ~300b by not including CRT startup code
'DEFINES += -DNEOPIXEL_SCK_PIN=27 -DNEOPIXEL_LRCK_PIN=18', # SCK pin needs defining as something unused for neopixel (HW errata means they can't be disabled)
'DEFINES+=-DESPR_PACKED_SYMPTR', # Pack builtin symbols' offset into pointer to save 2 bytes/symbol
'DEFINES += -DGPIO_COUNT=2 -DP1_PIN_NUM=16 -DNRF_P1_BASE=0x50000300UL "-DNRF_P1=((NRF_GPIO_Type*)NRF_P1_BASE)"', # Hack for 52833 on SDK12
'DEFINES += -DMICROBIT', # enable microbit-specific stuff
'INCLUDE += -I$(ROOT)/libs/microbit',
Expand All @@ -59,9 +64,9 @@
'part' : "NRF52832", # actually 52833 but we're using SDK12 for this at the moment, and it doesn't support it
'family' : "NRF52",
'package' : "QFN48",
'ram' : 64,
'ram' : 128,
'flash' : 512,
'speed' : 64, # TODO: actually 128k
'speed' : 64,
'usart' : 1,
'spi' : 1,
'i2c' : 1,
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