* 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.
* Add central memory-class ladder (MemClass.h) with fail-safe-small defaults
The 2.8.0 nRF52840 heap exhaustion happened because each RAM-sized cache
picked its per-platform tier from its own chip #ifdef ladder, and every
ladder's fallthrough default was its largest non-PSRAM tier - nRF52 was
never named, so it silently got 1000-entry caches on a ~115 KB arena.
This introduces src/memory/MemClass.h: a single MESHTASTIC_MEM_CLASS
(TINY / SMALL / MEDIUM / LARGE) ranked by usable app heap after platform
overheads, with the deliberate property that an unclassified chip lands
in SMALL - a new target boots with small caches until someone opts it up
in one visible place.
The TMM cache, warm store, MAX_RX_TOPHONE and MAX_SATELLITE_NODES
ladders in mesh-pb-constants.h now key off the class; branches pinned by
something other than RAM stay explicit and say why (nRF52840's SoftDevice
arena, RP2040's warm.dat watchdog bound). MAX_NUM_NODES intentionally
stays separate - it is flash-shaped (nodes.proto vs LittleFS), not
heap-shaped.
A per-class MESHTASTIC_BOOT_CACHE_BUDGET static_assert now covers the
three big boot-allocated caches, so the next cache-adding PR that would
blow a small platform's budget fails to compile instead of exhausting
heap in the field.
No values change for any existing target: rak4631, tbeam, rak11310 and
wio-e5 build byte-identical before/after; all ladders remain
#ifndef-guarded so variant overrides keep working.
* Address review: fix RP2350 class-table doc, add PacketRecord static_assert
- MemClass.h's class table claimed RP2350 was MEDIUM while the mapping
ladder classifies it SMALL (with RP2040) - the table now matches the
ladder, with a note that RP2350 is a MEDIUM candidate whenever someone
wants to tune it up (kept SMALL here so this header stays a behavioral
no-op).
- The boot-cache budget comment referenced a static_assert pinning
PacketHistory::PacketRecord at 20 B that did not exist (only a layout
comment). Add the real static_assert so the budget math in
mesh-pb-constants.h fails to compile if the record layout changes.
Also merges develop (the base #10898 landed there as a squash, which is
what made this stacked branch conflict); develop's mesh-pb-constants.h
is byte-identical to this branch's base, so the resolution keeps the
MemClass ladder unchanged. rak4631 and wio-e5 build green;
test_packet_history 47/47.
* Address review: share PACKETHISTORY_MAX, trim policy comments
- Hoist PACKETHISTORY_MAX from PacketHistory.cpp into
mesh-pb-constants.h (next to the MAX_NUM_NODES it derives from) so the
constructor clamp and the boot-cache budget static_assert use one
definition instead of hand-mirrored arithmetic that could drift. The
expression stays valid where MAX_NUM_NODES resolves at runtime
(ESP32-S3, portduino); the pointless 2.0 double math becomes integer.
- Trim the MemClass.h header (36 -> 16 comment lines) and the budget /
sizing-policy comments per the repo comment-length guideline, keeping
the class table, the fail-safe-small rule, the override mechanism, and
the include-order constraint.
rak4631 (compile-time MAX_NUM_NODES) and heltec-v3 (runtime) build
green; test_packet_history 47/47.
* 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.
* True Colors on TFT (Heltec Mesh Node T114, Heltec Vision Master T190, CardPuter Adv, T-Deck, T-Lora Pager)
* Theme support - New and some Classic Themes!
* Colored Compass
---------
Co-authored-by: Jason P <applewiz@mac.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
* Migrate all of the Meshtastic API attributes into the ini as a source of truth
* Cleanup garbage coalescing
* Another spot
* We already account for inkhud and mui
* Consolidate
* Removed them
* Boogers
* Infer
* Copying manifest should always succeed
* Remove portduino guards
* Rename
* None
Ben MeadorsandGitHub
HarukiToredaandGitHub
AustinandGitHub