Valentin V. Bartenev
a6f01d544e
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.
41 baris
988 B
C++
41 baris
988 B
C++
#pragma once
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#ifdef ESP32
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#include <stdint.h>
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#include "esp_attr.h"
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#include "esp_timer.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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class CPUUsageTracker {
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public:
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void begin();
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float getLoadAvg1() const { return _avg1; }
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float getLoadAvg5() const { return _avg5; }
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float getLoadAvg15() const { return _avg15; }
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private:
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static constexpr float DECAY1 = 0.920044415f; // exp(-5/60)
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static constexpr float DECAY5 = 0.983471454f; // exp(-5/300)
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static constexpr float DECAY15 = 0.994459848f; // exp(-5/900)
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static volatile uint32_t s_idle_ticks;
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static volatile uint32_t s_busy_ticks;
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static TaskHandle_t s_idle_handle;
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static void IRAM_ATTR s_tick_hook();
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static void s_sample_cb(void* arg);
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uint32_t _last_idle = 0;
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uint32_t _last_busy = 0;
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float _avg1 = 0.0f;
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float _avg5 = 0.0f;
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float _avg15 = 0.0f;
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esp_timer_handle_t _timer = nullptr;
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void _onSample();
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};
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#endif
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