CAPL script development
Create or extend event-driven CAPL behavior for CANoe and CANalyzer, using the available project structure and test specification.
Testing, Validation & Simulation
CAPL Development for Repeatable Vehicle-Network Testing
Develop CAPL scripts, automated test suites, and restbus simulations for CANoe and CANalyzer projects. The work supports functional, integration, regression, bench, SIL, HIL, MIL, and vehicle testing where repeatable network behavior is required.
Discuss a CAPL ProjectProblems I can investigate
Find the behavior behind the symptom
- 01
Testing is too manual
Repeated test execution and evaluation consume engineering time and make consistent regression testing difficult.
- 02
Restbus simulation needed
Missing network participants must be simulated so the available system can be exercised without every physical component.
- 03
ECU unavailable for testing
Development or test work is blocked because the target ECU is not available for the required test activity.
- 04
Vehicle unavailable for testing
System validation cannot depend on access to a complete vehicle, requiring executable test and simulation capability outside the vehicle.
What I can help with
Focused engineering work in Testing, Validation & Simulation
Automated test execution
Implement repeatable setup, execution, evaluation, and result handling for functional, integration, and regression testing.
Restbus simulation
Simulate missing CAN or CAN-FD network nodes and their communication to exercise available system behavior.
Diagnostic test support
Build test behavior around supplied UDS, ISO-TP, DoIP, or DTC requirements without assuming unsupported ECU behavior.
Network and trace analysis
Use CANalyzer or CANoe project context to inspect CAN communication, DBC-defined signals, and supplied BLF recordings.
What to send
Start with the evidence you already have
Existing CAPL
Existing CAPL nodes, test modules, or libraries to extend, refactor, or integrate.
Existing CANoe project
An existing CANoe configuration and its project assets, including the relevant test and simulation structure.
DBC
A CAN database defining the messages and signals used by the implementation or test activity.
Test specification
Test cases, procedures, expected results, or acceptance criteria that define the intended behavior.
How the analysis works
From recorded data to engineering findings
- 01
Review the engineering context
Inspect the existing CAPL, CANoe project, DBC, and test specification to establish the required interfaces and expected behavior.
- 02
Define the executable behavior
Translate the test or simulation requirement into CAPL event handling, test steps, setup, evaluation, and network communication behavior.
- 03
Implement and exercise
Develop the CAPL capability in the supplied project context and exercise it against the available test or simulation conditions.
- 04
Refine for repeatability
Review observed results, address implementation issues, and organize the output for repeatable functional, integration, or regression testing.
What you receive
Deliverables matched to the investigation
CAPL script
CAPL source implementing CANoe or CANalyzer behavior.
Automated test suite
Executable tests with assertions, setup, and repeatable results.
Restbus simulation
A simulation of missing network nodes and their communication.
Technologies & formats
Automotive data and analysis environments
- CAPL
Communication Access Programming Language
Vector event-driven language for network simulation, testing, and automation.
- CANoe
Vector CANoe
A development, simulation, test, and analysis environment for vehicle networks.
- CAN
Controller Area Network
A priority-based broadcast bus used for in-vehicle control communication.
- UDS
Unified Diagnostic Services
ISO 14229 diagnostic services for communicating with vehicle ECUs.
- CANalyzer
Vector CANalyzer
A Vector environment for recording and analyzing vehicle-network communication.
- CAN-FD
CAN Flexible Data-rate
An extension of CAN with larger payloads and a faster data phase.
- DBC
CAN Database
A text format describing CAN messages, signals, nodes, scaling, and metadata.
- J1939
SAE J1939
A higher-layer vehicle network protocol suite using CAN, common in heavy vehicles.
- ISO-TP
ISO 15765-2 Transport Protocol
A segmented transport protocol for messages carried over CAN.
- python-can
python-can
A Python library providing a common API for CAN interfaces and messages.
- BLF
Binary Logging Format
A Vector binary container for timestamped bus communication.
- DoIP
Diagnostics over Internet Protocol
Diagnostic transport over IP networks as defined by ISO 13400.
- DTC
Diagnostic Trouble Code
A coded diagnostic record identifying a detected fault condition.
FAQ
Practical questions before an investigation
- Can existing CAPL be extended?
- Yes. Existing CAPL nodes, test modules, or libraries can be reviewed and extended when they are provided with the CANoe project and relevant requirements.
- Can this support testing without the target ECU?
- A CAPL-based simulation or automated test capability can support development when the target ECU is unavailable, subject to the supplied network definitions and test specification.
- What network information is needed?
- A DBC is useful for message and signal definitions. Existing CAPL, the CANoe project, and the test specification provide additional implementation and evaluation context.
- Is the work limited to CAN testing?
- The scope can include CAN, CAN-FD, UDS, ISO-TP, J1939, DoIP, or DTC-related behavior when those technologies are part of the supplied project requirements.
Discuss the evidence
Discuss a CAPL Development Project
Share the existing CAPL or CANoe project, DBC, and test specification to scope the required CAPL development, automation, or restbus simulation.