- Add crc16 utility function
- Implement CRC16 for config store, remove old checksum, increment layout version
- Move UBL mesh store/load to MarlinSettings; increment UBL_VERSION
- Begin to lay out MAT structure, prototype functions, etc.
- Rename ubl.state.eeprom_storage_slot to .storage_slot
- Misc. optimization
- Cleanup/standardize/improve some messages
This is a work in progress!
Also... The memory corruption issue may be fixed. The GCC compiler
was inlining static functions and this caused the G29() stack frame to
become much larger than the AVR could handle.
`ftostr62sign()` is used only when displaing/editing
Steps/mm. A sign is not needed - the value is always positive.
Because the number part is long there is no't much place for the values name.
With this PR the is one more char for the name possible.
Bob-the-Kuhn