TempTrack-ESP/include/eepromInterface.h

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#include <stdint.h>
#include <stddef.h>
#pragma pack(push, 1)
struct DeviceInfo {
// The index where the measurement data starts in the eeprom storage
uint16_t startIndex;
// The time when the device was powered on (seconds since 1970)
uint32_t deviceStartTime;
};
struct Measurement {
uint16_t measurementIntervalsSinceDeviceStart;
uint8_t temperature0;
uint8_t temperature1;
};
#pragma pack(pop)
constexpr size_t eepromTotalSize = 13350;
constexpr uint16_t maxiumDeviceInfoCount = 10;
constexpr uint16_t dataStorageStartIndex = sizeof(DeviceInfo) * maxiumDeviceInfoCount;
constexpr uint16_t sizeOfMeasurement = sizeof(Measurement);
class EEPROMInterface {
public:
bool isInitialized;
/**
* @brief Initialize the storage
*
*/
EEPROMInterface();
/**
* @brief
*
*/
uint8_t startNewDeviceSession();
/**
* @brief Remove all stored data
*
* @return true The data was deleted
* @return false There was an error deleting the data
*/
bool clearAllData();
bool writeData(uint8_t* data, uint16_t count);
/**
* @brief Free space in the buffer
*
* @param buffer
* @param count
* @return uint16_t The number
*/
uint16_t readData(uint8_t* buffer, uint16_t count);
uint16_t getStoredByteCount();
private:
/**
* @brief The index into the buffer where the next byte should be written
*
*/
uint16_t writeIndex;
/**
* @brief The index into the buffer where the first byte is stored
*
*/
uint16_t readIndex;
/**
* @brief Find the write index, the first zero byte after a non-zero byte
*
* @return uint16_t The write index
*/
uint16_t findEndIndex();
uint16_t findStartIndex();
};