Callback Button
Execute MATLAB code using button with customizable appearance
- Library:
Simulink / Dashboard / Customizable Blocks
Description
The Callback Button block executes MATLAB® code in response to a click or a press of the button. When you press the button, the code executes after a time span that you specify has elapsed or at time intervals that you specify. You can configure the block to execute different code for a click versus for a press. When you use the Callback Button block from the Customizable Blocks library, you can also customize the appearance of the block to look like a button in your real system.
Double-clicking the Callback Button block does not open its dialog box during simulation or when the block is selected. To edit the block parameters, you can use the Property Inspector or open the block dialog box by:
Double-clicking the block when the block is not selected and the model is not simulating.
Right-clicking the block and selecting Block Parameters from the context menu.
Customize Callback Button Blocks
When you add a Callback Button block to your model, the block is
preconfigured with a default design. You can use the block with the default design or
customize the appearance of the block. When you design a Callback Button
block, you configure the block appearance for each possible state. When you configure the
Block Type as Momentary
, the block has two
states, and when you configure the Block Type as
Latch
, the block has four. For each state, you can:
Add an image that defines the appearance of the block in that state.
Specify text for the button label and configure its color and position within the block.
Add an icon and specify the position of the icon relative to the label.
When you want an aspect of the block, such as the label text or color, to indicate the state of the block, configure that aspect of the design differently for each state. When you want an aspect of the block to remain the same for all states, configure that aspect of the block design so it is the same for all states.
You can also design the block background and foreground, which apply for all states. To configure the foreground for the block, upload a foreground image. To configure the background for the block, you can upload a background image or use a solid background color.
To customize the appearance of the block, use design mode. You can enter design mode in one of three ways after selecting the block:
On the Button tab, under Design, click Edit.
In the Property Inspector, on the Design tab, click Edit Design.
Pause on the ellipsis that appears above the block and click the Edit Custom Block button.
Design mode gives you access to block parameters and settings that allow you to customize the appearance of the block. You can use the toolbar above the block to configure the image, the icon, and the label color and opacity for each state. For more customization options, use the Design tab in the Property Inspector.
When you finish designing the button, click Exit in the upper-right of the canvas to exit design mode.
Parameters
Block Characteristics
Data Types | |
Direct Feedthrough |
|
Multidimensional Signals |
|
Variable-Size Signals |
|
Zero-Crossing Detection |
|
Tips
To design a button that changes the value of a variable or parameter in your model, use the Push Button block.