This is a simple Spin I2C driver intended mostly for accessing I2C serial EEPROMs like the boot EEPROM. There are low level routines included that can be used to access other I2C devices, but the specific routines to do so would have to be written by the user. This somewhat duplicates the I2C Object Library by James Burrows, but is simpler, possibly easier to understand, and focused particularly on EEPROM use.