temporalCount
Number of events, chart executions, or time since state became active
Description
temporalCount( increments by 1 and returns a
positive integer value for each occurrence of the base event E)E that takes
place after activation of the associated state. Otherwise, the operator returns a value of
0.
In a chart with no input events, temporalCount(tick) returns the
number of times that the chart has woken up since activation of the associated state.
The temporalCount operator resets the counter for
E to 0 each time the associated state reactivates.
Use of temporalCount as an event-based temporal logic operator is not
supported in charts for execution as MATLAB® objects.
temporalCount( counts and returns
the number of units of time that have elapsed since activation of the associated state.
Specify time_unit)time_unit as seconds (sec), milliseconds
(msec), or microseconds (usec).
The temporalCount operator resets the counter for
sec, msec and usec to 0 each time
the associated state reactivates.
Examples
Tips
You can use quotation marks to enclose the keywords
'tick','sec','msec', and'usec'. For example,temporalCount('tick')is equivalent totemporalCount(tick).
The timing for absolute-time temporal logic operators depends on the type of Stateflow® chart:
Charts in a Simulink® model define temporal logic in terms of simulation time.
Standalone charts in MATLAB define temporal logic in terms of wall-clock time.
The difference in timing can affect the behavior of a chart. For example, suppose that this chart is executing the
entryaction of stateA.
In a Simulink model, the function call to
fexecutes in a single time step and does not contribute to the simulation time. After calling the functionf, the chart assigns a value of zero toy.In a standalone chart, the function call to
fcan take several seconds of wall-clock time to complete. After calling the functionf, the chart assigns the nonzero time that has elapsed since stateAbecame active toy.