so, we are trying to hook up the polar HRMI circuit from sparkfun using I2C and having lots of issues... I'll post those in another thread, but this lead to asking if we could use the serial interface on the HRMI interface board rather than I2C. I hesitate to do this since it would take up the serial interface we normally use to hook to the PC for debugging.
But then I noticed this "Power Serial I2C" port... can we use this? Will it work as another serial port for the Jeenode? If so, anyone have some example code showing how to use it as a serial port or an I2C port?