overcomplicated formula for temperature conversion

[kriede]

You are using a counterintuitive formular:

degree = ((response.registers[0] - 96) / 2) + 18

what can be rewritten as

degree = -30 + response.registers[0] / 2

or

degree = (response.registers[0] -60) / 2

Maybe not a big deal but clarifies what is really happening here: possible values...

• start at -30°C
• go up in steps of 0.5°C
• go up to 97.5°C (using 7-bits)

what fits all use-cases af such a heat pump.