At the moment I store some configuration data (5 variable values) in EEPROM which is read only once during setup, then used in the sketch.
I would like to put the configuration data on an SD Card instead. The only functional requirement will be a one time read during setup. The data will be pre-written on the card on a different system, so there is no SD Card write requirement in the sketch.
The issue I am having is the amount of memory the standard SD.h library uses. I have been doing some research and found some alternative libraries including Sdfat.h, although there seems to be a number of forks. Fat16 is not practical - as it is not easy to find cards.
If my understanding is correct, since there is no write requirement, there may be no need for a 512 buffer.
Does anyone have a recommendation for a suitable library?
Another "out there" question... Once the sketch starts and the data has been read from the SD Card, is it possible to "exclude" the SD Card library and free up some memory?
TIA for any help.