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Mark Biesiada


MathWorks

51 total contributions since 2011

My name is Mark Biesiada, and I work in technical support at MathWorks. I primarily focus on Simulink code-generation, but I also have a lot of background with writing S-functions as well.
Professional Interests: Embedded systems

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  • Knowledgeable Level 2
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Answered
Rate Transition with adjustable sampling rate
Dear Boru, Unfortunately, Simulink doesn't support changing sample times in the generated code. The underlying issue is that ...

3 Monate ago | 0

Answered
How to customize the code interface of a function generated of a reference model
Dear Boru, If you have Embedded Coder, it is possible to control the entry points using the Function Prototype Control featur...

3 Monate ago | 0

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Answered
Simulink debugger and referenced models
I would recommend using a feature such as signal logging to monitor the values inside the model reference. It doesn't let you in...

etwa 8 Jahre ago | 1

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Answered
Make error in compiling simulink 3d simulink file
I second Walter's theory about the writability of the directory. An easy way to check this would be to run MATLAB as administrat...

etwa 8 Jahre ago | 1

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Answered
Recompiling an S function, altered results
I recommend checking to see if there are any differences in support for floating-point operations. Specifically, check to see if...

etwa 8 Jahre ago | 0

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Answered
signal builder: repeat a signal for n times in one simulation (not to be confused with running in succession)
I don't know of a good way to do this using "Signal Builder", but the "From Workspace" block allows you to specify repetition af...

etwa 8 Jahre ago | 0

Answered
Creating simulink block and hidding the code
The S-function approach is probably the right way to go. If you plan on distributing it, you would need to provide a ".mex" file...

mehr als 8 Jahre ago | 0

Answered
Shared Utilities template file
I'm not sure if it's possible, but I would recommend looking at the customized file banners. I believe that there are different ...

mehr als 8 Jahre ago | 0

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accessing data from workspace
In addition to the FromWorkspace block, you can also use base workspace variables in most dialog boxes in Simulink. Also, if you...

mehr als 8 Jahre ago | 1

Answered
Triggering a subsystem to run for set duration
Fangjun's approach is probably the best way if the interval between the 0.25 pulses is also known in advance. If it is not, I w...

mehr als 8 Jahre ago | 0

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summation
There are a couple options available: * You could chain a series of 64 unit delays together and run a branched signal off of ...

mehr als 8 Jahre ago | 0

Answered
Efficiency about Embedded Funtion in Simulink
The best way to do this is probably to use Accelerator Mode, or Rapid Accelerator mode. There is some overhead that occurs duri...

mehr als 8 Jahre ago | 0

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Define Array data type
Fangjun is correct, the data type is independent of/orthogonal to the dimensions. You can also set the dimensions on most block...

mehr als 8 Jahre ago | 0

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How do I load text stored in an external file and display it as an annotation in a Simulink models?
One possible way to do this is to use a mask on top of an empty subsystem instead of annotations. From there, you can use the m...

mehr als 8 Jahre ago | 0

Answered
Import Workspace Data - Lookup Table vs. From Workspace?
As a third method, I would propose using an inport, and then specifying a workspace variable using the "Import/Export" section o...

mehr als 8 Jahre ago | 0

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3d graphics with s-function
For testing, I would recommend Kaustubha's approach for creating an instance of "Example1" and then trying to use it. For the bi...

mehr als 8 Jahre ago | 0

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S-function Runtime-evaluation of parameters
This should be possible if you take two steps inside the S-function: # You need to make the dialog parameters tuneable run-t...

mehr als 8 Jahre ago | 0

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Triggered subsystems at time t=0
Unfortunately, this sort of behavior is definitely impossible using only a triggered subsystem. Since the "edge" that triggers ...

mehr als 8 Jahre ago | 0

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Dynamically sized IO ports in simulink
The code above is mostly right, but there are some minor changes that you will need to make: * The calls to "mdlSetOutputPort...

mehr als 8 Jahre ago | 1

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Answered
Subversion and mdl files
In general, doing text merges on ".mdl" files doesn't go well, so I would strongly advise against this. The primary issue is th...

mehr als 8 Jahre ago | 0

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How to define parameters in Simulink ?
You may want to make "T" a state variable using work vectors. Within Simulink, blocks aren't able to influence/alter/change the...

mehr als 8 Jahre ago | 2

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Answered
How to determine if segmentation violation is caused by MATLAB function or user-defined function?
The general way to read a stack trace is that each row indicates a function call, and the top one is the deepest/most recent fun...

mehr als 8 Jahre ago | 0

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Answered
Simulink and COM (Component Object Model)
Fangjun is correct, you can only interface MATLAB through COM, but you *can* control Simulink from MATLAB, which could be enough...

mehr als 8 Jahre ago | 1

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Synchronize data output with clock pulses.
I believe that the issue is with the "Enable" block inside the enabled subsystem. If you double-click on this block, you can ac...

mehr als 8 Jahre ago | 0

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reading ASCII data from a file from s function
I suspect that this is only a subset of the code in the S-function, so it is a little difficult to tell if things are truly miss...

mehr als 8 Jahre ago | 0

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Get the Simulink block's handle of the block under the mouse
I don't believe that there is any way to detect a block that you are hovering over but haven't clicked. It is possible to detec...

mehr als 8 Jahre ago | 0

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Logging of Merge block Inputs
I would recommend putting a "Signal Conversion" (not to be confused with Data Type Conversion) block immediately upstream from e...

mehr als 8 Jahre ago | 0

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Access to the Matlab / simulink API
In conjunction with Kaustubha's point above about the automation server, the actual commands that you will want to run will like...

mehr als 8 Jahre ago | 1

Answered
No supported Visual C/C++ compiler found. Check your installation of Visual C/C++.
I believe that this occurs if you are using Visual Studio Express. When Simulink creates a VS solution/project, it actually does...

mehr als 8 Jahre ago | 1

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Answered
Generate C Function wih inline keyword
This is probably not necessary. For any atomic subsystem, you can choose the type of code generated for it. The "inline" optio...

mehr als 8 Jahre ago | 0

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