Data Logger

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class DataLogger {
  public:
    Virtual void setup() = 0;
    Virtual void loop() = 0;
    Virtual void add_data(char[] key, float value()) = 0;
    Virtual void write_meassage(char[] message) = 0;
    Virtual void persist() = 0;
}

class DataLoggerManager: public DataLogger {
  Public:
    Virtual void add_logger(DataLogger *logger) = 0;
}

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class SDLogger: public DataLogger {
  public:
    SDLogger(char[] log_folder, char[] data_folder) {}
}

• https://learn.adafruit.com/adafruit-adalogger-featherwing/using-the-sd-card
• https://www.adafruit.com/product/2922
• https://docs.particle.io/community/feather/#storage

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class SerialLogger: public DataLogger {
  public: 
    SerialLogger() {}
}

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class UbiLogger: public DataLogger {
  public:
    UbiLogger() {}
}

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BLE UART

https://docs.particle.io/tutorials/device-os/bluetooth-le/#uart-peripheral

https://rickkas7.github.io/ble-powersource/

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eink https://www.adafruit.com/product/4195

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Made DataLog (global/singleton?) like Log

Looked at:

• https://github.com/particle-iot/device-os/blob/1b1805fb4afcb93b0e92fbecfd28c082d6310285/wiring/inc/spark_wiring_logging.h#L626
• https://github.com/particle-iot/device-os/blob/60c5e50ee511d73d07a512476c1aeb12646b0843/wiring/src/spark_wiring_logging.cpp#L352

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Libraries to use for logging:

• PublishQueueAsyncRK
  • Replace current Ubidots implementation with a more generic publish function.
  • This can persist data to storage to send later, including persisting to SD cards via SDFat
• BleSerialPeripheralRK
  • Log output to Bluetooth Low Energy.
  • Tried implementation on BLE-UART branch.
• SdCardLogHandlerRK
  • Easier way to log to SD cards, by allowing print and similar serial like functions.
  • Can set different rotation periods.
  • Thread