uRTEDemo_03_Nucleo-F446RE_SystemStates_10_Model

Logical Function Block

LED

An LED to indicate a binary state

Diagrams

Relationships

Requirements Model
Logical Function Model
Software Model
Hardware Model

Safety

Required
The SIL for this logical function is derived from the Safety Requirements linking to its technical functions.
SIL 		SIL_1

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 		LED
The type of this object within the uRTE model
Type 		LogicalFunctionBlock
A descriptive text for this object. Please consider that this field might be used in code and thus must not contain special characters.
Description

An LED to indicate a binary state
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 		LogicalFunctionBlock_27
Each object within the uRTE model has a unique ID, this is the ID for this object
UID 		_eFgSYOZREeyZ2OzYlvU4PA
Stereotype
Type of function
Type 		Output
References

Technical Functions (1)

System functionalities (technical functions) this logical function block is associated with.

Function LFB Software Hardware Other Software SIL required SIL achieved SIL justification sub Technical Functions Requirements sub Requirements
Blinking LED

An LED shall blink to indicate that the system is alive and responding.
SIL_1 QM
Ports
Port Flow
LED_IN (LogicalFunctionPort_30)

LED control
  • LED state (LogicalFunctionFlow_28)

Functional Layer

Logical Function Blocks (2)

Logical Function Blocks which which are associated with the Technical Functions.

Function Type Technical functions
Button

An binary HMI

 Input
Controller

The MCU implementing the logic

 Service

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 (3)

(Safety)Requirements linking to the Technical Functions.

(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
Requirement_32 - LED Blink

In order to indicate that uRTE is up and running, an LED shall blink (toggle its binary state) with an frequency of 1/100ms.

 Requirement_32 Thomas Barth Tue Jun 07 13:05:57 CEST 2022 0.0 Thomas Barth product functional implemented - - - -
Requirement_93 - LED Button

While the button is pressed, the LED shall be on permanently.

 Requirement_93 Wed Jun 08 17:18:27 CEST 2022 0.0 product functional implemented - - - -
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

Software units (4)

Sofware units the associated technical functions are associated with. See associated tasks for more software dependencies.

Unit Parent Function calls other Software Elements Technical Functions Requirements Type Tasks WCET Stack ROM Globals ProtectionSets SIL required SIL achieved sub Technical Functions (R) sub Requirements (R) Has a return value (R) SystemStates (R) Ingoing Trigger Ports (R) Outgoing Trigger Ports (R) Ingoing Data Ports (R) Outgoing Data Ports (R) Signals (D) Runnables (D) DataType (D) Is Synchronous (D) Hardware (D) Ports (G) Callers (F) Return Type (F) Parameters (F)
ButtonRead

Reads the current button state from hardware

 Button
InDriver 0 0 0
SIL_1 QM - - - - - - - - uRTE_boolean_t true - - - -
drv_LED

Hardware write-Interface towards the LED

 LED
OutDriver 0 0 0
SIL_1 QM - - - - - - - - uRTE_boolean_t true - - - -
run_LED

Controls the LED signal and thus the LED

 LED
Runnable 0 0 0
SIL_1 QM false
  • Runnable_00_blink_Tick
  • Runnable_blink_Button_IN
  • Runnable_00_blink_OUT
 - - - - - - - - -
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
 - - - - - - - - -

Hardware Layer

Hardware Components (1)

Hardware Components the associated technical functions are associated with. See associated tasks for more hardware dependencies.

Component Type Start End SIL required SIL achieved Sub-Components Technical Functions sub Technical Functions Requirements sub Requirements
PA5

LD2 [Green Led] on the Nucelo Board

 Periphery GPIOA_BASE GPIOB_BASE - 1 SIL_1 QM