Circular Buffer Has New Data
Indicates whether a circular buffer contains new data or is empty.
Library
MATLAB Command Line
Click to copy the following command line to the clipboard. Then paste it in the MATLAB Command Window:
qc_open_library('quarc_library/Advanced/Asynchronous')Description
The Circular Buffer Has New Data block indicates whether the circular buffer contains new data or is empty. If it contains new data then the output is true (1). Otherwise the output is false (0). The Circular Buffer Has New Data block is often used to provide the initial condition on a While Iterator Subsystem that is processing the data in the circular buffer.
Input Ports
This block has no input ports.
Output Ports
new
Whether the circular buffer contains new data. It is true (1) if there is data in the buffer and false (0) otherwise.
Data Type Support
This block outputs a boolean signal.
Parameters and Dialog Box
Go to Circular Buffer blocks using this buffer
Opens a dialog that lists all the Circular Buffer blocks in the model which are currently using the same interface selected in the Buffer name parameter. The dialog may be used to go to another Circular Buffer block in the model just by double-clicking on the name of the block in the dialog box.
Buffer name
The name of the circular buffer. This list of buffer names is derived from all the Circular Buffer Initialize blocks in the model.
Sample time
The sample time of the block. A sample time of 0 indicates that the block will be treated as a continuous time block. A positive sample time indicates that the block is a discrete time block with the given sample time.
A sample time of -1 indicates that the block inherits its sample time. Since this is a source block, only inherent the sample time when it is placed in a conditionally executed subsystem, like a Triggered Subsystem, Enabled Subsystem, Function Call Subsystem or in a referenced model.
To use the fundamental sampling time of the model, set the sample time to qc_get_step_size , which is a QUARC function that returns the fundamental sampling time of the model.
The default sample time is set to qc_get_step_size because this block is a source block.
Targets
|
Target Name |
Compatible* |
Model Referencing |
Comments |
|---|---|---|---|
|
Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
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Yes |
Yes |
Last fully supported in QUARC 2018. |
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Rapid Simulation (RSIM) Target |
Yes |
Yes |
|
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S-Function Target |
No |
N/A |
Old technology. Use model referencing instead. |
|
Normal simulation |
Yes |
Yes |
See Also
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