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46 lines
960 B
46 lines
960 B
3 years ago
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#include <cmath>
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#include <SPIFFS.h>
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class DataLogger
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{
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public:
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struct Entry
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{
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float batteryVoltage = 0.0f; // V
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float batteryOutputCurrent = 0.0f; // A
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float speed = 0.0f; // m/s
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bool isDifferent(const Entry& other)
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{
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const float scale = speed > 0.0f ? 1.0f : 5.0f;
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return
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std::abs(batteryVoltage - other.batteryVoltage) > 0.1f * scale
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&& std::abs(batteryOutputCurrent - other.batteryOutputCurrent) > 0.1f * scale
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&& std::abs(speed - other.speed) > 0.1f;
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}
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};
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public:
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DataLogger();
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~DataLogger();
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static DataLogger& get() { return mainLogger; }
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void open();
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void close();
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void log(unsigned long timeMilliseconds, const Entry& entry);
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bool isOpen();
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const char* currentLogFileName();
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private:
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static DataLogger mainLogger;
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Entry lastEntry;
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unsigned long lastTimeMilliseconds = -1;
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float currentTime = 0.0f;
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float lastLogTime = 0.0f;
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File file; // @suppress("Abstract class cannot be instantiated")
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};
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