I2cBus

• setBitRate - Sets the communications speed of the I2C bus.
• start - A low level function to start communicating with a given slave device if you are writing your own I2C communications from scratch.
• stop - This is a low-level call to indicate that the communication session has finished (ie 'hang up the phone').
• get - This is a low-level function to read, and return, a byte from the bus.
• put - This is a low-level function to write a byte across the bus.