How do I make a condition be one or the other on Stateflow?

Hey all, I'm designing a traffic light system in Simulink using stateflow and need to know how to change a condition so it can be met with one of 2 conditions.

How do I put "button equals to 1 or 0" for the condition cirlced in red? As I need the traffic light system to run even if button doesn't equal to one but to jump to that line when button does equal to 1.

Answer 1

[Jayanti]

Since you want the traffic system to go from "Start" to "PrepareToStop" state for both the cases of button. I am assuming that you want to immediately transition to "PrepareToStop" in case button value is 1, or after some time if button value is 0.

In Stateflow, you can use logical conditions to specify multiple criteria for transitions.

For delayed transitions when the button value is 0, the "after(time, sec)" function can be employed. This function is a temporal logic operator that triggers transitions based on elapsed time.

To achieve your requirement, you can use the following condition:

[button == 1 || (button == 0 && after(5, sec))].

For more details, you can refer to the MathWorks documentation:

https://www.mathworks.com/help/stateflow/ref/after.html