added test to call tmp100_init
test done for initializing 1 device
added test for more devices than allowed
refactor
changed enum declaration
added comments
added test for opening an I2C bus
added test for open i2c bus
refactor
a hwbus reference can now be passed to i2c devices
basic read temperature test passes
refactor
i2c open before init
renamed HWBUS to I2C_HWBUS
fixed project includes