Introduction - If you have any usage issues, please Google them yourself
I2C interface to TMP100 temperature sensor in 9-bit mode.
Timer_A CCR0 interrupt is used to wake up and read the two bytes of
the TMP100 temperature register every 62ms. If the temperature is greater than 28C, P1.0 is set, else reset. CPU is operated in LPM0. I2C speed is ~100kHz.