Dem Status Override

R2026b

Override an event to simulate and verify behavior

Since R2022a

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Dem Status Override block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

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

Description

The Dem Status Override block can be configured to 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 set the return value of GetEventStatus calls for a specific event regardless of the behavior of the other events in the model. Other blocks that attempt to modify the event status during simulation are ignored. This block allows a predictable entry-point for testing specific behavior that you can use as a low-cost method to quickly gain coverage of a component model.

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

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

Clear (default) | Set

Test failed the last time it was checked.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

Test Not Completed 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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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

Clear (default) | Set

Test not completed during this operation cycle.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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.

To set this property, select Dialog to manually configure the status or Input port to have the status configured dynamically in response to the behavior of a connected input.

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 Override"

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

Extended Capabilities

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

Version History

Introduced in R2022a