Model Preparation for Real-Time Simulation

Predefined and custom I/O driver blocks, code generation parameters, real-time kernel

A library of I/O driver blocks provides connections between physical I/O devices and real-time models. To observe how Simulink^® models respond to real-world behavior, use the Simulink Desktop Real-Time™ block library to create a real-time application from a Simulink model. Set the model configuration parameters to values consistent with real-time execution. The real-time application runs on your computer with the Simulink Desktop Real-Time kernel. See Prepare for Real-Time Execution.

Functions

`sldrtkernel`	Install and remove Simulink Desktop Real-Time kernel
`rtwho`	Display information about development computer status
`sldrtconfigset`	Attach and activate default Simulink Desktop Real-Time configuration set

Blocks

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Analog I/O

Analog Input	Read from one or multiple analog input channels
Analog Output	Write to one or multiple analog output channels

Counter, Encoder, and Frequency I/O

Counter Input	Read from one or multiple counter-input channels
Encoder Input	Read from one or multiple incremental encoder input channels
Frequency Output	Write to one or multiple frequency or PWM output channels

Digital I/O

Digital Input	Read from one or multiple digital input channels
Digital Output	Write to one or multiple digital output channels

Internet of Things

ThingSpeak Input	Read input fields from ThingSpeak channel
ThingSpeak Output	Write output fields to ThingSpeak channel

Packet I/O

Packet Input	Read binary data or a CAN message from a communication channel
Packet Output	Write binary data or a CAN message to a communication channel

Servo I/O

Servo Output

Write to standard servo output channels

Stream I/O

Stream Input	Read formatted ASCII data from communication channel
Stream Output	Write formatted ASCII data to communication channel

Other I/O

Other Input	Read from one or more input channels not handled by specific blocks
Other Output	Write to one or more output channels not handled by specific blocks

Synchronization

Real-Time Sync

Synchronize model execution to real time in normal mode or accelerator mode

Target Profiling

Execution Time	Output total execution time in external mode
Timestamp	Output signal timestamp in external mode

Simulink Configuration Parameters

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Topics

Prerequisites

Install Real-Time Kernel

Install the Simulink Desktop Real-Time kernel on your development computer.

Configuration

Prepare for Real-Time Execution

Transform your Simulink model for interaction with physical I/O devices.

Use I/O Boards
Use I/O Driver Blocks
Use Analog I/O Drivers
Use Vector CAN Drivers
Custom I/O Driver Basics
Simulink Desktop Real-Time Pane
Execution Time Measurement and Block Profiling

Related Information

Create a Simulink Model

Featured Examples

Frequency Measurement

Measure input signal frequency by using Simulink Desktop Real-Time™. The measured signal is connected to the counter input of your data acquisition board. Counter Input block is configured to reset counter each sample-hit after counter read. Dividing counter value by sample time gives input signal frequency.

Open Example

PWM Frequency and Duty Measurement

Measure PWM signal frequency and duty using Simulink Desktop Real-Time™. The measured signal is connected to gate pins of two counter inputs of your data acquisition board. The first Counter Input block is configured to measure signal duty by measuring the time between rising and falling edge of the signal. The other Counter Input block is configured to measure signal period by measuring the time between two rising edges of the signal. Both the counters use internal on-board clock as the clock source. PWM frequency and duty are then computed based on these values.

Open Example

Packet Input/Output

Transfer data through UDP communication protocol using binary encoding. The model sends data within one computer, from one UDP port to another. You can modify the model to communicate between two computers by splitting this model into its send and receive parts and running the models on two computers. The yellow blocks are used to send the data, the blue blocks are used to receive the data. Then, please enter the host names or IP addresses of the two computers into the appropriate fields in the Board Setup dialog.

Open Example

Stream Input/Output

Transfer data through TCP communication protocol by using ASCII encoding. The model sends data within one computer, from one TCP port to another. You can modify the model to communicate between two computers by splitting this model into its send and receive parts and running the models on two computers. The yellow blocks are used to send the data, the blue blocks are used to receive the data. Then, please enter the host names or IP addresses of the two computers into the appropriate fields in the Board Setup dialog.

Open Example

CAN Input/Output

Transfer data through CAN bus. The model sends data within one computer, from one CAN channel to another. The two CAN channels can be either virtual channels or physical channels on a dual-channel CAN device. Two different CAN messages using different message identifiers are being transmitted. You can modify the model to communicate between two computers by splitting this model into its send and receive parts and running the models on two computers. The yellow blocks are used to send the data, the blue blocks are used to receive the data.

Open Example

CAN Input/Output with Vehicle Network Toolbox

Transfer data through CAN bus, utilizing the CAN_MESSAGE data type and the CAN Pack and CAN Unpack blocks available in Vehicle Network Toolbox™ block library. The CAN_MESSAGE data type can be directly processed by Simulink Desktop Real-Time™ blocks.

Open Example