Config section are stored as binary structures. On reset the uC checks the CRC to see if there is a valid configuration. In theory we should be able to push a new config version before updating the uC firmware

The memory map looks as follows

 +----------------------+
 | EEPROM Marker (0xFC) |
 +----------------------+
 |     Data block 1     |
 |                      |
 |    e.g Analog Cal    |       crc=crc8(EEPROM_MARKER)
 +----------------------+           + crc8(size of data block 1)
 |         . . .        |           + crc8(       . . .        )
 +----------------------+           + crc8(size of data block n)
 |     Data block n     |
 |                      |
 |    e.g Analog Cal    |
 +----------------------+
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Each data block is written & read using EEPROMex.

Sample data blocks:

• CardReader stores an array of 10 PINs or RFIDs (i.e. unsigned long)
  • libraries/CardReader/CardReader.cpp:64
• SensorAcq stores an array of struct sensorThreshold (static size defined at compile time)
  • libraries/SensorAcq/SensorAcq.cpp:39