delete stray .o file
add I2C master driver from RP6 project
set the correct clock speed in Makefile
ok, we can speek to TriacBloc via I2C
ant the naivest possible PID works
slow pid setting
more responsive controller
Merge branch 'master' into feature/pid

Conflicts:
	src/main.c
run timer in CTC mode, avoid manually reseting timer to 0. Now sampling frequency looks to be right
run timer2 to generate triangle wave at frequency fsampling/16. this triangle wave is being added to measured signal
PID library refactored
refactor code a bit, extract adc to temperature conversion to separate function