uRTEDemo_03_Nucleo-F446RE_SystemStates_10_Model

SWComponent

Button

Logic for the button

Diagrams

SWC Button

Safety

Required
SILs QM

Properties

Base
NameButton
Type SWComponent
Description

Logic for the button
User-IDSWComponent_34
UID_5mAcMOZgEeyZ2OzYlvU4PA
configuration
Filenameswc_button
Generatedtrue
Sub-Folderfalse
containment

Software units (2)

All software units contained in this SWC

Unit Parent Function calls Technical Functions Requirements Type Tasks WCET Stack ROM Globals ProtectionSets SIL req SIL ach 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
QM QM - - - - - - - - uRTE_boolean_t true - - - -
run_readButton

Acquires the button state periodically and provides button signals

 Button
Runnable 0 0 0
QM 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
 - - - - - - - - -

Outgoing Trigger Ports (1)

Trigger OUT ports attached to this SWC

Port Signal event target Container
SWC_Button_OUT_Edge Button

Ingoing Data Ports (1)

Data IN ports attached to this SWC

Port Signals Source Container
SWC_Button_HW_IN Button

Outgoing Data Ports (2)

Data OUT ports attached to this SWC

Port Signals Target Container
SWC_Button_OUT_Count Button
SWC_Button_OUT_State Button

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 effective 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 (2)

Requirements mapped to software units in this SWC.

(Safety)Requirement Parent User-ID Author Creation Date Start Date Deadline Expense Responsibe Category Type Status Function Type SIL derived SIL manual SIL effective Tests Technical Functions Software Hardware Signals Global variables Activation events Use-Cases User-Stories Refining Conflicting refined by conflicted by
(SafetyRequirement_94) Global variables

Global variables can store data for Runnables and other Software Functions.
The memory protection will automatically be generated.
The actual declaration is implemented as user-code to allow the use of non-trivial datatypes and operations.

 SafetyRequirement_94 Thomas Barth Wed Jun 08 17:34:15 CEST 2022 0.0 Thomas Barth product functional implemented System_Function QM derived QM
(SafetyRequirement_110) Hardware Interfacing

How to read and write data form and to hardware.

 SafetyRequirement_110 Thomas Barth Thu Jun 09 20:50:22 CEST 2022 0.0 Thomas Barth product functional approved System_Function QM derived QM

Functional Layer

Technical Functions (2)

Technical functions mapped to software functions in this SWC.

Function LFB Software Hardware Technical Functions sub Technical Functions Requirements sub Requirements
Blinking LED

An LED shall blink to indicate that the system is alive and responding.
UART

If the button is pressed, UART messages indicating the press duration are sent.

Software Layer

Tasks (1)

Tasks executing software units in this SWC

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

Signals (4)

Signals used by the runnables in this SWC

Signal Type Storage Runnables OUT Runnables IN Tasks SystemStates Requirements miminum Age maximum Age Checksum Force Sync Inline ISR API effective inline SIL req SIL ach Initial value (D) Pointer access (D) Datatype (D) Alt-In (D) Alt-Out (D) In-Driver (D) Out-Driver (D) OnData (D) OnError (D) OnTrigger (E)
HWI_Button

Hardware interface for the button

 Data local in
0 2 false false false false false - QM false false uRTE_boolean_t
ButtonRead
-
button state

A representation of the current button state

 Data local in
0 105 false false false false false SIL_1 QM false false uRTE_boolean_t
-
-
button_cnt

contains the number of seconds, the button has been pressed

 Data global in
Button		 0 202 true false false false false QM QM 0 false button_cnt_t
-
-
button_edge

Fired whenever the button is pressed (but not if it is released)

 Event local in
0 0 false false false false false QM QM - - - - - - - - -

Output-Sections (1)

Sections used by the global variables of this SWC or its software units.

OutputSection SIL References Initialization Generate Section start symbol Section end symbol Memory
.button

a section containing application data for the button

 SIL_1 UnInit true ADRL_uRTE_BUTTON_BEGIN* ADRL_uRTE_BUTTON_END* main
Symbols marked with * are automatically generated because no value was set.

Triggered Runnables (2)

Runnables in other SWCs triggered by runnables in this SWC.

Unit Parent Function calls Technical Functions Requirements Type Tasks WCET Stack ROM Globals ProtectionSets SIL req SIL ach sub Technical Functions sub Requirements) Has a return value SystemStates Ingoing Trigger Ports Outgoing Trigger Ports Ingoing Data Ports Outgoing Data Ports
run_UART_send

Sends UART messages periodically via the UART signal

 UART
Runnable 0 0 0
QM QM
true
  • Runnable_run_UART_send_TPortIN_1
  • Runnable_run_UART_send_DPortIN_1
  • Runnable_run_UART_send_DPortIN_2
  • Runnable_run_UART_send_UART_OUT
run_UART_wakeUp

Runnable to switch into the UART state if there is an event in the Blink State.
This runnable does not use hardware signals but accesses hardware directly and is therefore associated with
an protection set grandting access to hardware.

 UART
Runnable 0 0 0
QM QM
true
  • Runnable_run_UART_WakeUP

Target Runnables (2)

Runnables in other SWCs receiving data from the runnables in this SWC.

Unit Parent Function calls Technical Functions Requirements Type Tasks WCET Stack ROM Globals ProtectionSets SIL req SIL ach sub Technical Functions sub Requirements) Has a return value SystemStates Ingoing Trigger Ports Outgoing Trigger Ports Ingoing Data Ports Outgoing Data Ports
run_LED

Controls the LED signal and thus the LED

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

Sends UART messages periodically via the UART signal

 UART
Runnable 0 0 0
QM QM
true
  • Runnable_run_UART_send_TPortIN_1
  • Runnable_run_UART_send_DPortIN_1
  • Runnable_run_UART_send_DPortIN_2
  • Runnable_run_UART_send_UART_OUT

Ingoing Trigger Ports (1)

Trigger IN ports attached to the runnables in this SWC.

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

Activation-Events (1)

Activation Events triggering the execution of runnables in this SWC.

Event Type Cycle Time (C) Offset (C) Task-Init (S) Requirements Ports Runnables Tasks SystemStates SIL req SIL ach
Button Timebase

Timebase for button read operations

 CyclicEvent 200 0 - SIL_1 QM

Hardware Layer

Hardware Components (2)

Cores executing the software units of this SWC and hardware references by the drivers.

Component Type Start End SIL req SIL ach Sub-Components Technical Functions sub Technical Functions Requirements sub Requirements
Arm® Cortex®-M4

Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator) allowing 0-wait state execution from Flash memory, frequency up to 180 MHz, MPU, 225 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions

 Core - - - QM
PC13-TAMPER-RTC

B1 [Blue PushButton] on the Nucleo Board

 Periphery GPIOC_BASE GPIOD_BASE - 1 - QM