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meshtastic_firmware/variants/nrf52840/nrf52.ini
T
Ben MeadorsandGitHub ed03a69555 Right-size nRF52 heap tiers after 2.8.0 heap-exhaustion field reports (#10898)
* Right-size nRF52 heap tiers after 2.8.0 heap-exhaustion field reports

Field reports on 2.8.0 show nRF52840 devices at 99% heap (114/115 KB)
within minutes of boot; operator new asserts on OOM, so these devices
are one allocation from a reboot. The 2.8.0 cache sizing ladders gave
nRF52 the largest non-PSRAM tiers on the assumption that a BLE-only
part has a roomy heap - the arena is actually ~125 KB shared with the
FreeRTOS task stacks.

Per-target retiers (nRF52840 unless noted):
- Traffic Management cache 1000 -> 250 entries (10 KB -> 2.5 KB); the
  unclassified fallthrough drops 1000 -> 400 to match the classic-ESP32
  tier (also affects RP2040/RP2350)
- Warm node store 200 -> 100 entries (8 KB -> 4 KB); the non-XXAA
  fallthrough drops 320 -> 100 so an unclassified RAM-constrained part
  can't boot-allocate 12.8 KB
- MESSAGE_HISTORY_LIMIT 20 -> 10 (text pool 4.4 KB -> 2.2 KB), the tier
  classic ESP32 already ships
- MAX_RX_TOPHONE 32 -> 16, shrinking the static packet pool 70 -> 54
  slots (~6.6 KB of .bss returned to the heap arena)
- PacketHistory hash index off arch-wide (1 KB); O(n) over 240 records
  is negligible at LoRa packet rates
- OLEDDISPLAY_REDUCE_MEMORY arch-wide (~1 KB OLED back buffer); the five
  TFT variants -U it because TFTDisplay.cpp needs buffer_back for
  dirty-window diffing
- Drop the stale "for testing" 1024-entry TMM override on T1000-E

Measured on rak4631: heap arena grows 124,572 -> 131,180 B and boot
allocations drop ~15.7 KB, roughly +22 KB free heap on the field-report
device class.

Migration: the nRF52840 warm flash ring replays through place() (LRU),
so the newest 100 identities survive the shrink; the file backend
rejects oversized snapshots cleanly (new test covers this). Native
suites pass (536/536 Docker, 13/13 native-macos warm store); rak4631,
heltec-mesh-node-t114 (TFT) and tracker-t1000-e build green.

* Drop stale OLEDDISPLAY_REDUCE_MEMORY -U on t114 / mesh-solar-tft

Only USE_TFTDISPLAY variants (t1, t096, wismeshtap) compile
TFTDisplay.cpp and need the lib's buffer_back; t114 and mesh-solar-tft
render through the meshtastic-st7789 driver, which handles the
reduced-memory configuration fine - as #10894 (merged from develop)
already established by defining the flag there. Remove the -U guard and
the per-variant -D (redundant with the arch-wide define in nrf52_base
on this branch). Both variants verified building.
2026-07-06 13:18:25 -05:00

60 lines
2.3 KiB
INI

[nrf52_base]
; Instead of the standard nordicnrf52 platform, we use our fork which has our added variant files
platform =
# renovate: datasource=custom.pio depName=platformio/nordicnrf52 packageName=platformio/platform/nordicnrf52
platformio/nordicnrf52@10.12.0
extends = arduino_base
platform_packages =
; our custom Git version with C++17 support in platform.txt
# TODO renovate
platformio/framework-arduinoadafruitnrf52 @ https://github.com/meshtastic/Adafruit_nRF52_Arduino#master
; Don't renovate toolchain-gccarmnoneeabi
platformio/toolchain-gccarmnoneeabi@~1.90301.0
extra_scripts =
${env.extra_scripts}
extra_scripts/nrf52_extra.py
pre:extra_scripts/nrf52_lto.py
extra_scripts/nrf52_warm_region.py ; post-link guard: image must end below the 12 KB warm-store raw-flash region at 0xEA000-0xED000
build_type = release
build_flags =
-include variants/nrf52840/cpp_overrides/lfs_util.h
${arduino_base.build_flags}
-Wno-unused-variable
-Isrc/platform/nrf52
-DLFS_NO_ASSERT ; Disable LFS assertions , see https://github.com/meshtastic/firmware/pull/3818
-DMESHTASTIC_EXCLUDE_AUDIO=1
-DMESHTASTIC_EXCLUDE_PAXCOUNTER=1
-DMESHTASTIC_EXCLUDE_PKT_HISTORY_HASH=1 ; drop PacketHistory's 1 KB hash index; O(n) over ~240 records is negligible at LoRa packet rates
-DOLEDDISPLAY_REDUCE_MEMORY ; drop the ThingPulse OLED back buffer (~1 KB); TFT variants must -U this (TFTDisplay.cpp needs buffer_back)
-Os
-std=gnu++17
-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
-fmerge-all-constants ; fold identical constants image-wide (~0.7KB; same flag stm32 uses)
build_unflags =
-Ofast
-Og
-ggdb3
-ggdb2
-g3
-g2
-g
-g1
-g0
-std=c++11
-std=gnu++11
build_src_filter =
${arduino_base.build_src_filter} +<platform/nrf52/> -<nimble/> -<mesh/wifi/> -<mesh/api/> -<mesh/http/> -<modules/esp32> -<mesh/eth/> -<mesh/raspihttp> -<serialization/>
lib_deps=
${arduino_base.lib_deps}
${radiolib_base.lib_deps}
# renovate: datasource=github-tags depName=meshtastic/Crypto packageName=meshtastic/Crypto
https://github.com/meshtastic/Crypto/archive/591ff9a690e8168ccb7a36abde8d7783e448d395.zip
lib_ignore =
BluetoothOTA
lvgl