When I developed the software of FSL Air Mouse based on kinetis KL16 , I need read and write more than 1 byte data from or to sensor by i2c. But I don't find any i2c driver which supports mutli-bytes accessing. So I write the i2c driver which supports mutli-bytes accessing. It can run on MCU KL1x series and you can modify it a little for Kinetis K series.