Are you confusing flash memory with EEPROM? EEPROM is usually where those type of values would be stored. The EEPROM library that comes with the IDE has example code.
If you do have a Due, there are many I2C or SPI EEPROMs available.
Are you confusing flash memory with EEPROM? EEPROM is usually where those type of values would be stored. The EEPROM library that comes with the IDE has example code.
If you do have a Due, there are many I2C or SPI EEPROMs available.