uRTEDemo_03_Nucleo-F446RE_SystemStates_10_Model

SignalDataObject

button_cnt

contains the number of seconds, the button has been pressed

Diagrams

Requirements Model
Logical Function Model
Software Model
Hardware Model

Safety

Required
SIL derived QM
overwrite (SIL_manual) derived
reason (SIL_manual_reason)
SIL QM
Achieved
SIL achieved QM
justification

Properties

Base
Namebutton_cnt
Type SignalDataObject
Description

contains the number of seconds, the button has been pressed
User-IDSignalDataObject_60
UID_-1yaIOZoEeyZ2OzYlvU4PA
signal configuration
miminum Age 0
maximum Age 202
Storage (isLocal) global signal in Button
Checksum true
Force Sync false
Inline false
effective inline false
Has ISR API false
effective ISR API deactivated for all signals
datasignal configuration
Initial value: 0
Pointer access: false
Datatype: button_cnt_t

Alternative IN datatypes (1)

Alternative input datatypes.

Type Atomic Primitive Initial value Typedef path Signals Drivers Global Variables
uRTE_uint16_t

This type used by uRTE internally and is avaiable for general purpose. Its save to delete this type if it is not needed.

 true true 0 generated at src_rte\signals\types\uRTE_uint16_t_type.h

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 (3)

Requirements referencing to this signal.

(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_111) SignalLayer features

Demonstrate the use of scalers and validators.
Make use of age restrictions, checksums and pointer access.

 SafetyRequirement_111 Thu Jun 09 20:52:41 CEST 2022 0.0 product functional approved System_Function QM derived QM
(SafetyRequirement_96) Inter-task communication

µRTE easily can transmit events and data between tasks

 SafetyRequirement_96 Thomas Barth Wed Jun 08 17:46:14 CEST 2022 0.0 Thomas Barth product functional implemented System_Function QM derived QM
(SafetyRequirement_97) local and global signals

Signals can either be global data objects of local objects on the task stack.
Global signals are the same for everyone while with local signals each task has an own copy which gets synchroized if the signal changes,

 SafetyRequirement_97 Wed Jun 08 17:49:01 CEST 2022 0.0 product non_functional implemented System_Function QM derived QM

Software Layer

Data-Out Runnables (1)

Runnables in which this signal is an output.

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_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

Data-In Runnables (1)

Runnables in which this signal is an input.

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

Tasks (2)

Tasks in which the signal is used.

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
UART

Task responsible for sending out UART protocolls

 Arm® Cortex®-M4 SIL_1 5 - false .rtos.task.UART

System-States (2)

SystemStates in which the signal is used.

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

Hardware Layer

Hardware Components (2)

Associated hardware. Cores executing the associated runnables, memory used, peripherals interfaced.

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
main

The STM32F446RE RAM module

 RAM 0x20000000 0x2001ffff - QM