Using the Requirements Management Interface (Requirements Management Interface)

Requirements Management Interface

Viewing the Requirements for a Node

Use the Navigator to see which nodes have requirements associated with them. This is done when you are reviewing the objects (Simulink model, Stateflow diagram, or MATLAB M-file) requirements.

Select a node that has requirements associated with it. The requirements for that node appear in the right pane of the Navigator.

The shading of a node's icon in the Navigator indicates whether or not it has associated requirements, as shown in the following table.

Table 2-1: Node icons in the Navigator and What They Represent

Not shaded
Simulink subsystem with no requirements

Shaded
Simulink subsystem that has requirements

Lightly shaded
Simulink subsystem belonging to a subsystem that has requirements; subsystem itself has no requirements

Not shaded
Simulink block with no requirements

Shaded
Simulink block that has requirements

Lightly shaded
Simulink block belonging to a subsystem that has requirements; block itself has no requirements

Not shaded
Stateflow chart with no requirements

Shaded
Stateflow chart that has requirements

Lightly shaded
Stateflow chart belonging to a subsystem that has requirements; chart itself has no requirements

Not shaded
Stateflow state with no requirements

Shaded (with yellow)
Stateflow state that has requirements

Lightly shaded
Stateflow state belonging to a superstate, chart, or subsystem that has requirements; state itself has no requirements

Not shaded
Stateflow transition with no requirements

Shaded (with blue)
Stateflow transition that has requirements

Lightly shaded
Stateflow transition belonging to a superstate, chart, or subsystem that has requirements; transition itself has no requirements

Not shaded
MATLAB M-file with no requirements

Shaded
MATLAB M-file that has requirements

Table 2-1: **Node icons in the Navigator and What They Represent**
	Not shaded	Simulink subsystem with no requirements
	Shaded	Simulink subsystem that has requirements
	Lightly shaded	Simulink subsystem belonging to a subsystem that has requirements; subsystem itself has no requirements
	Not shaded	Simulink block with no requirements
	Shaded	Simulink block that has requirements
	Lightly shaded	Simulink block belonging to a subsystem that has requirements; block itself has no requirements
	Not shaded	Stateflow chart with no requirements
	Shaded	Stateflow chart that has requirements
	Lightly shaded	Stateflow chart belonging to a subsystem that has requirements; chart itself has no requirements
	Not shaded	Stateflow state with no requirements
	Shaded (with yellow)	Stateflow state that has requirements
	Lightly shaded	Stateflow state belonging to a superstate, chart, or subsystem that has requirements; state itself has no requirements
	Not shaded	Stateflow transition with no requirements
	Shaded (with blue)	Stateflow transition that has requirements
	Lightly shaded	Stateflow transition belonging to a superstate, chart, or subsystem that has requirements; transition itself has no requirements
	Not shaded	MATLAB M-file with no requirements
	Shaded	MATLAB M-file that has requirements

The following example shows that nodes for the N block in the valve timing subsystem and the positive edge to dual edge conversion subsystem are shaded, indicating they have requirements associated with them. The nodes under the positive edge to dual edge conversion subsystem are lightly shaded, indicating they belong to a subsystem that has requirements associated with it.

Stateflow Chart with Requirements

Note Stateflow allows for multiple transitions at the same level to have the same name. However, the Requirements Management Interface does not support associating requirements documents with transition peers that have the same name.

This example shows the control logic Stateflow chart (in the fuel rate controller subsystem of the fuelsys model) with requirements.

MATLAB M-File with Requirements

This example shows the M-file engine.m with requirements

Viewing Requirements in the Navigator Changing or Deleting a Requirement