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main/system_info.h

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+#ifndef _SYSTEM_INFO_H_
+#define _SYSTEM_INFO_H_
+
+#include <string>
+
+#include <esp_err.h>
+#include <freertos/FreeRTOS.h>
+
+class SystemInfo {
+public:
+    static size_t GetFlashSize();
+    static size_t GetMinimumFreeHeapSize();
+    static size_t GetFreeHeapSize();
+    static std::string GetMacAddress();
+    static std::string GetChipModelName();
+    static std::string GetUserAgent();
+    static esp_err_t PrintTaskCpuUsage(TickType_t xTicksToWait);
+    static void PrintTaskList();
+    static void PrintHeapStats();
+    static void PrintPmLocks();
+};
+
+#endif // _SYSTEM_INFO_H_