Improve average response time accuracy

[SeppNel]

Because I check the light sensor like this

The response time would be half of the time spent waiting in .write longer than in reallity (Worst case: time spent waiting, Best case: 0, AVG: worst/2)

To improve accuracy I would need to:

1. Measure avg time waiting
2. Subtract that from average

Because the poll frequency is not the same between all adapters, I have to do the measurement dynamically.