Ben MeadorsandGitHub
b4b1ece8f1
The Arduino loop task runs Meshtastic's entire cooperative OSThread scheduler on the Adafruit core's stock 4 KB (1024-word) stack. The 2.8 first-sync path - AdminModule::handleSetConfig -> saveChanges -> configChanged -> RadioInterface::reloadConfig -> LR11x0 reconfigure -> SPI Lock::lock, with vsnprintf/USB-CDC logging frames stacked on top - overflows it. SWD fault capture on a T1000-E (pyocd vector_catch=h) proved it: the loop task's SP was driven 40 bytes BELOW its own pxStack base, the stack paint was consumed to the floor, and the crash was a BusFault in xQueueSemaphoreTake dereferencing a semaphore handle that adjacent-heap corruption had overwritten with log text (0x3f3f207c = "| ??"). The core's HardFault handler is a bare NVIC_SystemReset, so in the field this presents as a silent reboot ~seconds after a phone pairs (or a 30 s zombie hang -> supervision timeout 0x8 when the corruption lands on task TCBs instead). Also explains the set_time_only -> immediate-NodeInfo crash variant reported on empty-DB nodes: same task, different deep chain. 2.7.26 is unaffected because the deep frames (XEdDSA, satellite map conversion, replay engine) did not exist. Fix: set -DLOOP_STACK_SZ=2048 (words = 8 KB) for all nrf52840 targets. Requires the #ifndef guard from meshtastic/Adafruit_nRF52_Arduino#7; until that merges the flag is a harmless redefinition warning. Validated on hardware: pairing + full sync completes, stack paint shows healthy margin under load. Also fix the boot-time reset-reason log: the core's init() caches RESETREAS and W1C-clears the register before setup() runs, so the raw read here has always printed 0. Use readResetReason() instead. (preFSBegin's RESETREAS==0 gate is intentionally left as-is - its degenerate GPREGRET-only behavior is what makes lfs recovery work.)
67 lines
3.0 KiB
INI
67 lines
3.0 KiB
INI
[nrf52_base]
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; Instead of the standard nordicnrf52 platform, we use our fork which has our added variant files
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platform =
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# renovate: datasource=custom.pio depName=platformio/nordicnrf52 packageName=platformio/platform/nordicnrf52
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platformio/nordicnrf52@10.12.0
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extends = arduino_base
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platform_packages =
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; our custom Git version with C++17 support in platform.txt
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# renovate: datasource=git-refs depName=meshtastic/Adafruit_nRF52_Arduino packageName=meshtastic/Adafruit_nRF52_Arduino gitBranch=master
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platformio/framework-arduinoadafruitnrf52 @ https://github.com/meshtastic/Adafruit_nRF52_Arduino#0fd295f13203e93df19d578073646ec32f2bf45a
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; Don't renovate toolchain-gccarmnoneeabi
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platformio/toolchain-gccarmnoneeabi@~1.90301.0
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extra_scripts =
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${env.extra_scripts}
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extra_scripts/nrf52_extra.py
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pre:extra_scripts/nrf52_lto.py
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extra_scripts/nrf52_warm_region.py ; post-link guard: image must end below the 12 KB warm-store raw-flash region at 0xEA000-0xED000
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build_type = release
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build_flags =
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-include variants/nrf52840/cpp_overrides/lfs_util.h
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${arduino_base.build_flags}
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-Wno-unused-variable
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-Isrc/platform/nrf52
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; The Arduino loop task runs the entire cooperative OSThread scheduler; the core's stock
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; 4 KB (1024-word) stack overflows during BLE first-sync (admin config-apply -> radio
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; reconfigure with XEdDSA/satmap/log frames stacked) - SWD-proven on T1000-E: SP driven
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; 40 B below pxStack, corrupting adjacent heap -> silent HardFault reset on phone pairing.
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; 2048 words = 8 KB, validated on hardware. Value is in WORDS; requires the #ifndef guard
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; from meshtastic/Adafruit_nRF52_Arduino#7 (harmless redefinition warning until it merges).
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-DLOOP_STACK_SZ=2048
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-DLFS_NO_ASSERT ; Disable LFS assertions , see https://github.com/meshtastic/firmware/pull/3818
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-DMESHTASTIC_EXCLUDE_AUDIO=1
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-DMESHTASTIC_EXCLUDE_PAXCOUNTER=1
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-DMESHTASTIC_EXCLUDE_PKT_HISTORY_HASH=1 ; drop PacketHistory's 1 KB hash index; O(n) over ~240 records is negligible at LoRa packet rates
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-DOLEDDISPLAY_REDUCE_MEMORY ; drop the ThingPulse OLED back buffer (~1 KB); TFT variants must -U this (TFTDisplay.cpp needs buffer_back)
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-Os
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-std=gnu++17
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-flto ; whole-image LTO (~-60KB) on every nrf52840 target; nrf52_lto.py (pre: extra_script) keeps the interrupt handlers out of LTO so they survive
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-fmerge-all-constants ; fold identical constants image-wide (~0.7KB; same flag stm32 uses)
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build_unflags =
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-Ofast
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-Og
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-ggdb3
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-ggdb2
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-g3
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-g2
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-g
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-g1
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-g0
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-std=c++11
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-std=gnu++11
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build_src_filter =
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${arduino_base.build_src_filter} +<platform/nrf52/> -<nimble/> -<mesh/wifi/> -<mesh/api/> -<mesh/http/> -<modules/esp32> -<mesh/eth/> -<mesh/raspihttp> -<serialization/>
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lib_deps=
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${arduino_base.lib_deps}
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${radiolib_base.lib_deps}
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# renovate: datasource=github-tags depName=meshtastic/Crypto packageName=meshtastic/Crypto
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https://github.com/meshtastic/Crypto/archive/591ff9a690e8168ccb7a36abde8d7783e448d395.zip
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lib_ignore =
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BluetoothOTA
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lvgl
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