Andrew YongandChloe Bethel
0ee5777c15
mallinfo().fordblks counts only free bytes within the committed arena. On STM32WL (newlib sbrk heap) the arena grows lazily from _end toward SP, so fordblks reads near-zero at early boot even when ~48 KB of addressable space remains. This caused NodeDB::isFull() to fire prematurely and evict nodes on a freshly booted device. Fix getFreeHeap() to include uncommitted sbrk headroom (SP - sbrk(0)) so the returned value reflects true available memory throughout the boot lifecycle. Introduce MESHTASTIC_DYNAMIC_SBRK_HEAP as an opt-in build flag (set in stm32.ini) so the fix is gated to platforms with a dynamic sbrk heap rather than a static heap. Future platforms with the same heap model can opt in by adding this flag. Signed-off-by: Andrew Yong <me@ndoo.sg> Assisted-by: Claude Sonnet 4.6 <noreply@anthropic.com>
61 lines
2.4 KiB
INI
61 lines
2.4 KiB
INI
[stm32_base]
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extends = arduino_base
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platform =
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# renovate: datasource=custom.pio depName=platformio/ststm32 packageName=platformio/platform/ststm32
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platformio/ststm32@19.5.0
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platform_packages =
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# renovate: datasource=github-tags depName=Arduino_Core_STM32 packageName=stm32duino/Arduino_Core_STM32
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platformio/framework-arduinoststm32@https://github.com/stm32duino/Arduino_Core_STM32/archive/2.10.1.zip
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extra_scripts =
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${env.extra_scripts}
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extra_scripts/stm32_extra.py
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build_type = release
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build_flags =
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${arduino_base.build_flags}
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-flto
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-Isrc/platform/stm32wl -g
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-DMESHTASTIC_EXCLUDE_AUDIO=1
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-DMESHTASTIC_EXCLUDE_ATAK=1 ; ATAK is quite big, disable it for big flash savings.
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-DMESHTASTIC_EXCLUDE_INPUTBROKER=1
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-DMESHTASTIC_EXCLUDE_POWERMON=1
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-DMESHTASTIC_EXCLUDE_SCREEN=1
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-DMESHTASTIC_EXCLUDE_MQTT=1
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-DMESHTASTIC_EXCLUDE_BLUETOOTH=1
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-DMESHTASTIC_EXCLUDE_WIFI=1
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-DMESHTASTIC_EXCLUDE_TZ=1 ; Exclude TZ to save some flash space.
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-DSERIAL_RX_BUFFER_SIZE=256 ; For GPS - the default of 64 is too small.
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-DHAS_SCREEN=0 ; Always disable screen for STM32, it is not supported.
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;-DPIO_FRAMEWORK_ARDUINO_NANOLIB_FLOAT_PRINTF ; Enable this if enabling debugg logging. It is REQUIRED for at least traceroute debug prints - without it the length returned by printf ends up uninitialized.
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-DDEBUG_MUTE ; You can #undef DEBUG_MUTE in certain source files if you need the logs.
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-fmerge-all-constants
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-ffunction-sections
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-fdata-sections
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-DRADIOLIB_EXCLUDE_SX128X=1
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-DRADIOLIB_EXCLUDE_SX127X=1
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-DRADIOLIB_EXCLUDE_LR11X0=1
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-DRADIOLIB_EXCLUDE_LR2021=1
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-DMESHTASTIC_DYNAMIC_SBRK_HEAP
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-DHAL_DAC_MODULE_ONLY
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-DHAL_RNG_MODULE_ENABLED
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-Wl,--wrap=__assert_func
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-Wl,--wrap=strerror
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-Wl,--wrap=_tzset_unlocked_r
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build_src_filter =
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${arduino_base.build_src_filter} -<platform/esp32/> -<nimble/> -<mesh/api/> -<mesh/wifi/> -<mesh/http/> -<modules/esp32> -<mesh/eth/> -<input> -<buzz> -<modules/RemoteHardwareModule.cpp> -<platform/nrf52> -<platform/portduino> -<platform/rp2xx0> -<mesh/raspihttp>
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board_upload.offset_address = 0x08000000
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upload_protocol = stlink
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debug_tool = stlink
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lib_deps =
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${env.lib_deps}
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${radiolib_base.lib_deps}
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# renovate: datasource=git-refs depName=caveman99-stm32-Crypto packageName=https://github.com/caveman99/Crypto gitBranch=main
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https://github.com/caveman99/Crypto/archive/1aa30eb536bd52a576fde6dfa393bf7349cf102d.zip
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lib_ignore =
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OneButton
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