Dem Status Inject

R2026b

Inject an event failure to test recovery

Since R2022a

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Dem Status Inject block

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Libraries:
AUTOSAR Blockset / Classic Platform / Basic Software / Diagnostic Event Manager (Dem)

Description

The Dem Status Inject block can be configured to instantaneously set the diagnostic status for an AUTOSAR event simulated in the Diagnostic Service Component block. This status value can be configured according to the Unified Diagnostic Services (UDS) standard. Specifically, you can use this block to inject a transient failure into a system to test its ability to recover. This block simulates and responds to other blocks affecting its status to show system recovery.

Examples

Simulate and Verify AUTOSAR Component Behavior by Using Diagnostic Fault Injection

Simulate and verify the behavior of AUTOSAR components modeled in Simulink® that contain calls into the AUTOSAR Diagnostic Event Manager (Dem). You can gain quick testing coverage by overriding the diagnostic status of specific events or verify component recovery by injecting transient event failures.

• Open Live Script

Parameters

EventID — Specify the event

0 (default) | integer

Specify the AUTOSAR event that you want to override by using this block.

Programmatic Use

Block Parameter: EventId

Type: integer

Values: 0 | integer

Default: 0

Fault type — Specify the type of fault

Event Fail (default) | Event Pass | Operation Cycle Start | Operation Cycle End | Fault Record Overwritten | Fault Maturation | Clear Diagnostic | Aging | Healing | Indicator Conditions Met

Specify the type of diagnostic event that you want to inject into the system.

Programmatic Use

Block Parameter: FaultType

Type: character vector

Values: 'Event Fail' | 'Event Pass' | 'Operation Cycle Start' | 'Operation Cycle End' | 'Fault Record Overwritten' | 'Fault Maturation' | 'Clear Diagnostic' | 'Aging' | 'Healing' | 'Indicator Conditions Met'

Default: 'Event Fail'

Trigger type — Specify the inject condition

rising (default) | falling | either | function-call

Specify when to inject the diagnostic event into the system.

Programmatic Use

Block Parameter: InjectTriggerType

Type: character vector

Values: 'rising' | 'falling' | 'either' | 'function-call'

Default: 'rising'

Test Failed — Indicates the result of the most recently performed test

Clear (default) | Set

Test failed the last time it was checked.

This read-only property is set by the Fault type.

Test Failed this Operation Cycle — Indicates whether a diagnostic test has reported a failure during the current operation cycle

Clear (default) | Set

Test failed during the current operation cycle.

This read-only property is set by the Fault type.

Pending DTC — Indicates whether a diagnostic test has reported a failure during the current or last completed operation cycle

Clear (default) | Set

Test failed during the current or previous operation cycle.

This read-only property is set by the Fault type.

Confirmed DTC — Indicates whether a malfunction was detected enough times to warrant that the DTC should be stored in long-term memory

Clear (default) | Set

Test failure confirmed at the time of the request.

This read-only property is set by the Fault type.

Test Not Complete Since Last Clear — Indicates whether a test has run and completed since the last time a call was made to ClearDiagnosticInformation

Clear (default) | Set

Test not performed since the last code clear.

This read-only property is set by the Fault type.

Test Failed Since Last Clear — Indicates whether a test has failed since the last time a call was made to ClearDiagnosticInformation

Clear (default) | Set

Test failed at least once since last code clear.

This read-only property is set by the Fault type.

Test Not Complete This Operation Cycle — Test not performed during the current operation cycle

Clear (default) | Set

Test not completed during this operation cycle.

This read-only property is set by the Fault type.

Warning Indicator Requested — Indicates the status of any warning indicators associated with a particular DTC

Clear (default) | Set

Test failure so severe that it alerts the server.

This read-only property is set by the Fault type.

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"autosarlibdem/Dem Status Inject"

Example: add_block("autosarlibdem/Dem Status Inject","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2022a