Wire the 1-minute CPU load average into the stats history pipeline:
- Rename HistorySample::reserved to load_avg1_pct (uint8_t, 0-100);
struct size unchanged.
- Populate load_avg1_pct in updateStatsHistory on ESP32 from
_cpu_tracker.getLoadAvg1() * 100.
- Register "cpu_load" series in buildPointValue / seriesTitle /
seriesUnit so buildSeriesJson serves it via
/api/stats?series=cpu_load.
- Persist load_avg1_pct as a 29th CSV column in flushSummaryLog.
parseSummaryLine accepts both 28-column (old, load_avg1_pct=0)
and 29-column (new) formats for backward compatibility.
- Add "cpu_load" to the web panel trend card order with orange
sparkline color (#e07b39), "N %" hover formatting, and a Y-axis
floored at 0 with a 10% minimum ceiling.
Track CPU utilisation on core 0 using a FreeRTOS tick hook that
increments per-tick idle/busy counters, sampled every 5s by an
esp_timer callback. Exponential moving averages with Linux-style
time constants (1 / 5 / 15 min) are maintained in software:
DECAY1 = exp(-5/60) ≈ 0.9200 (1-minute window)
DECAY5 = exp(-5/300) ≈ 0.9835 (5-minute window)
DECAY15 = exp(-5/900) ≈ 0.9945 (15-minute window)
Core 1 is excluded intentionally: it runs the Arduino loopTask at
100% load for LoRa packet processing, so its figure is always 1.0
and carries no diagnostic value. All other tasks are pinned to
core 0 by task_pinning.c, so core-0 load reflects the true system
utilisation.
New files:
arch/esp32/CPUUsageTracker.h – class declaration
arch/esp32/CPUUsageTracker.cpp – tick hook + esp_timer sampling
Integration:
MyMesh::begin() calls _cpu_tracker.begin() on ESP32 builds.
formatStatsReply() emits "load_avg":[<1m>,<5m>,<15m>] in the
compact stats JSON payload.
formatWebStatsSummaryJson() adds the same field to the web-panel
stats endpoint under core.load_avg.
The web-panel HUD gains a "Load Avg" metric tile showing all
three values side-by-side; the core-metrics grid is widened from
4 to 5 columns. The tile is rendered conditionally so older
firmware (or non-ESP32 builds) that omit the field degrade
gracefully.
CPUUsageTracker.cpp is added to the esp32_base build_src_filter
in platformio.ini.
* room server: added RegionMap, and new CommonCLI wiring, default_scope handling
* sensor: only minimal RegionMap wiring. Still needs work to handle default-scope
The companion_radio example was not restoring the GPS enabled/disabled
preference from flash after reboot. The preference was being saved
correctly when toggled via the mobile app, but on boot,
sensors.begin() -> initBasicGPS() unconditionally sets gps_active=false
and nothing subsequently restored the persisted state.
Added applyGpsPrefs() (matching the pattern in simple_repeater,
simple_sensor, and simple_room_server) and call it from main.cpp
after sensors.begin() to ensure the GPS hardware is initialized
before the saved preference is applied.
Valentin V. Bartenev