Models can include blocks for generating code that handles asynchronous events, such as:
Hardware-generated interrupts
Elapsed timers
Asynchronous read and write operations
Asynchronous tasks spawned by a real-time operating system (RTOS)
For simulation, you can import asynchronous event data into a function-call subsystem.
| Asynchronous Task Specification | Specify priority of asynchronous task represented by referenced model triggered by asynchronous interrupt |
| Async Interrupt | Generate Versa Module Eurocard (VME) interrupt service routines (ISRs) that execute downstream subsystems or Task Sync blocks |
| Task Sync | Run code of downstream function-call subsystem or Stateflow chart by spawning an example RTOS (VxWorks) task |
Design models that support execution of blocks in response to events that occur asynchronously to the periodic timing source of the system.
Rate Transitions and Asynchronous Blocks
Use Rate Transition blocks to handle data transfers to and from asynchronous blocks.
Generate Interrupt Service Routines
Generate an interrupt service routine (ISR) that is associated with a specific VME interrupt level.
Spawn and Synchronize Execution of RTOS Task
Simulate and generate code for asynchronous events on a multitasking, real-time operating system (VxWorks®).
Pass Asynchronous Events in RTOS as Input To a Referenced Model
Generate code for a model that triggers asynchronous events that get passed as input to a referenced model.
Maintain absolute and elapsed timing data for blocks that execute in the context of an asynchronous task with the code generator.
Create a Customized Asynchronous Library
Create custom blocks that support handling of asynchronous events with vxlib1 library blocks as templates.
Import Asynchronous Event Data for Simulation
Import asynchronous event data into a function-call subsystem.
Asynchronous Support Limitations
Limitations of asynchronous event support.