uRTEDemo_03_Nucleo-F446RE_SystemStates_10_Model

CyclicEvent

Button Timebase

Timebase for button read operations

Warnings

Safety (1)

Safety Warnings for CyclicEvent Button Timebase.
Safety warnings are related to the Requirements Layer, especially the SIL

Button Timebase has a SIL required of SIL_1 but a SIL achieved of QM

Safety

Required
The highest SIL derived from SafetyRequirements and activated Runnables.
SIL derived 		SIL_1
This attribute allows to overwrite the derived SIL level. The result is the SIL effective attribute.
SIL manual 		derived
The reason why the derived SIL is ignored and an explicit SIL is set.
reason
The SIL required for this implementation unit is defined by the derived SIL but can be overwritten by "SIL manual".
SIL required 		SIL_1
Achieved
The achieved SIL for this implementation unit. Has to be provided by the user.
SIL achieved 		QM
A justification why a certain SIL was achieved.
justification

Properties

Base
The name of this object. Certain classes of objects require this field to be unique. Please consider that this field might be used in code and thus must not contain special characters.
Name 		Button Timebase
The type of this object within the uRTE model
Type 		CyclicEvent
A descriptive text for this object. Please consider that this field might be used in code and thus must not contain special characters.
Description

Timebase for button read operations
A user defined ID which can be freely chosen. Please consider that this field might be used in code and thus must not contain special characters.
User-ID 		CyclicEvent_52
Each object within the uRTE model has a unique ID, this is the ID for this object
UID 		_bCdS8OZjEeyZ2OzYlvU4PA
configuration
The interval in which this event shall be fired.
Cycle Time 		200
The offset, relative to the cycle time, with which this event shall be fired.
Offset 		0

Associated Ports (1)

Port Events Signal event source Container Task Guard Order
Runnable_run_readButton_Tick
run_readButton Button
0

Requirement Layer

Hazard Scenarios (1)

Hazard Scenarios for associated Hazardous Events.

Hazard Scenario Parent Hazard Events
Potential customers don't like the tool

This would be very sad.

Hazardous Events (2)

Hazardous Events for associated Safety Goals.

Hazardous Event Parent Probability Controllability Effect SIL Safety-Goals
Complexity

The user might think µRTE is hard to use.

 QM
Unknown features

The customer might not see the full spectrum of features µRTE comes with.

 QM

Safetygoals (1)

Safety Goals linking to the Requirements.

Safety Goal Parent Function Type SIL derived SIL manual SIL required Safe State Safety Requirements
Show most important features in an lightweight demo

An small demo model with the most important features shall show the most important features of µRTE.

 System_Function QM derived QM Show slides

(Safety)Requirements (1)

Requirements referencing to this CyclicEvent.

(Safety)Requirement Parent User-ID Author Creation Date Start Date Deadline Expense Responsibe Category Type Status Justification Function Type SIL derived SIL manual SIL required Tests Technical Functions Software Other SW Hardware Signals Global variables Activation events Use-Cases User-Stories Refining Conflicting refined by conflicted by
SafetyRequirement_95 - Runnable activation by cyclic events

Runnables can be activated by cyclic events.

 SafetyRequirement_95 Thomas Barth Wed Jun 08 17:34:15 CEST 2022 0.0 Thomas Barth product functional implemented System_Function QM SIL_1 SIL_1

Software Layer

Runnables (1)

Runnables triggered by this event.

Unit Parent Function calls other Software Elements Technical Functions Requirements Type Tasks WCET Stack ROM Globals ProtectionSets SIL required SIL achieved sub Technical Functions sub Requirements) Has a return value SystemStates Ingoing Trigger Ports Outgoing Trigger Ports Ingoing Data Ports Outgoing Data Ports
run_readButton

Acquires the button state periodically and provides button signals

 Button
Runnable 0 0 0
SIL_1 QM false
  • Runnable_run_readButton_Tick
  • Runnable_run_readButton_Edge_OUT
  • run_readButton_HW_IN
  • Runnable_run_readButton_Button_OUT
  • Runnable_run_readButton_button_pressed_cnt

Tasks (1)

Tasks which can be activated with this event (depending on the system-state).

Task Core SIL Priority Software States Signals Init Hardware OutputSections Own TimeBase Stack
Button

Task responsible for reading the button state

 Arm® Cortex®-M4 SIL_1 6 - false .rtos.task.Button

System-States (2)

States in which the event is active.

State isStart Runnables Tasks
Blink

In this state, an LED will blink.

 true
UART

A state that is entered if the user has pressed the button. Here, periodic UART messages are sent.

 false