EEPROM.h: No such file or directory about ascom-oag-focuser

[jlecomte]

Interesting! Indeed, it seems like the Seeeduino Xiao does not have any EEPROM. I have a few units myself but had not yet tried on them (so far, I've been developing the firmware using an Uno clone) But it seems like there are several options:

1. Option 1 is to not use EEPROM. All the EEPROM-related code would be in #ifdef ... #endif blocks... This is not so great because you lose the ability to remember the position of the focuser during a power cycle...
2. Option 2 is to use something like this: https://github.com/khoih-prog/FlashStorage_SAMD. Unfortunately, this also has a downside. The number of writes will be limited to about 10,000. Once you get in that neighborhood, your chip is dead.
3. Option 3 is to use a separate EEPROM chip and use that instead of relying on the micro-controller.
4. Option 4 is to not use a Xiao. I love that little microcontroller board, but for this application, maybe it's not ideal. I am going to experiment with an ATTiny85 board to see if it works well. I will update the README accordingly.

Any other idea @OriomMao ?

[jlecomte]

I updated the README to warn people of this compatibility issue and to let them know what to do. See https://github.com/jlecomte/ascom-oag-focuser/#microcontroller-compatibility