Many low-power sensors have only an I2C connection…how do I connect one of these sensors to an Xbee Pro 900HP programmable? If not supported out of the box, is there sample code or a library to use some I/O pins for that purpose?
Yes there are sample applications found in the FreeScale XBee SDK that allows you to use one or more of the radios/freescales ADC/DIO lines for this purpose.