Determination of a driving style as input when Adaptive cruise control system is turned to on?

I am trying to implement an algo where I need to ouput a particular driving style as an input to one of my state machine states.

For that the car is in a manual mode initially and I compute the relative velocity of my car wrt to a predetermined velocity. Then I output a particular value of driving style. However my state machine control state should take this driving style value when car is in ACC mode i.e from manual to automatic.

How can it be so that I take driving style value only when ACC is on ?

Answer 1

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In your state machine create a local data of same type as driving_style_value input.

In your code

if CAR_IN_ACC_MODE
  driving_style_value_local = driving_style_value;
else
  driving_style_value_local = Whatever you want.

Use driving_style_value_local for further processing.