Adding diagnostics

src/core/configuration.h

@@ -1,3 +1,3 @@
 // Contains configuration constants:
 
-#define FIRMWARE_VERSION "1.0.3"
+#define FIRMWARE_VERSION "1.0.6"

src/core/diagnostics_state.cpp

@@ -0,0 +1,41 @@
+#include "diagnostics_state.h"
+
+
+void DiagnosticsState::update()
+{
+    current.timestamp = millis();
+    current.freeHeap =
+        ESP.getFreeHeap();
+
+    current.minimumFreeHeap =
+        ESP.getMinFreeHeap();
+
+    current.cpuFrequency =
+        ESP.getCpuFreqMHz();
+
+    history[historyIndex] = current;
+
+    historyIndex++;
+    if(historyIndex >= DIAGNOSTIC_HISTORY_SIZE)
+    {
+        historyIndex = 0;
+    }
+}
+
+
+
+DiagnosticSample DiagnosticsState::getCurrent()
+{
+    return current;
+}
+
+
+
+DiagnosticSample DiagnosticsState::getHistory(uint8_t index)
+{
+    if(index >= DIAGNOSTIC_HISTORY_SIZE)
+    {
+        return current;
+    }
+    return history[index];
+}

src/core/diagnostics_state.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <Arduino.h>
+
+
+#define DIAGNOSTIC_HISTORY_SIZE 60
+
+
+struct DiagnosticSample
+{
+    uint32_t timestamp;
+    uint32_t freeHeap;
+    uint32_t minimumFreeHeap;
+    uint32_t cpuFrequency;
+};
+
+
+class DiagnosticsState
+{
+public:
+
+    void update();
+
+
+    DiagnosticSample getCurrent();
+    DiagnosticSample getHistory(uint8_t index);
+
+
+private:
+
+    DiagnosticSample current;
+    DiagnosticSample history[DIAGNOSTIC_HISTORY_SIZE];
+    uint8_t historyIndex = 0;
+};