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Simulink block to get the specified value
You need your design to remember the past value of a signal, so your design will need some lasting memory. Lasting memory is als...

3 years ago | 0

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How to set an input/output data type based block mask parameters?
One way to achieve this is to use the Mask Initialization code to create a dummy "value holder variable" of the same type specif...

3 years ago | 1

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Simulation for custom multiprocessor hardware
Yes, a strength of Simulink is allowing all manner of different things to be brought together in a system level simulation. Thi...

3 years ago | 0

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Use variable with number of bits for entiere and fractional part
Hi Mathieu, As Walter mentioned, Fixed-Point Designer provides fixed-point support for MATLAB, Simulink, Stateflow, Embedded Co...

3 years ago | 3

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Answered
Why does C code generated from Stateflow logic with 'duration' operator have conversion to real_T (double) in it?
Tunable Pararmeters with Duration appears to be a Limitation for Singles only designs In the model above, tuneParam1, tunePar...

3 years ago | 2

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Answered
Mux signals do not affect simulation or code generation. But when Code is generated using Mux Block then Arrays are getting generated. Please explain
The mux block is not changing the values. In that sense, "Mux signals do not affect simulation or code generation." But, as the...

3 years ago | 0

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Answered
Stateflow model file dependencies issue.
Hi 1) You can proceed with the rest of the Fixed-Point Tool conversion workflow. A restore point only impacts how you can aba...

3 years ago | 0

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Machine precision in simulink
To determine what is happening, a good approach is to log the key signals involved. Then use MATLAB to investigate the logged v...

3 years ago | 0

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Answered
Why is type conversion int32_t to uint32_t a Sign Change Integer Conversion Overflow Defect in Polyspace?
First, two suggestions Here are two suggestions that can improve the efficiency of your generated code and may make the analysi...

3 years ago | 0

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Answered
Matlab Code for IQ Samples Compression and Decompression based on Block Floating point
I'll describe some concepts that will hopefully help you figure out the code needed for your specific case. I'm assuming the in...

3 years ago | 1

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What is the equivalent of Discrete Filter bloc in a matlab code ?
dsp.IIRFilter dsp.FIRFilter filter

3 years ago | 1

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Answered
Why do the data become zero when using the function fi?
It's just like scientific notation is the short answer to "Why FractionLength can be bigger than WordLength?". The long answe...

3 years ago | 0

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How can you get a mathmatical function from a simulink plot?
Finding a model or function is a very broad field. Depending on the nature of the problem and requirements, many tools and tech...

4 years ago | 0

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Simulink Fixed point to Floating Conversion
Notice the "(SI)" shown on the icons of the data type conversion blocks. That means the block is using the less common "Stored ...

4 years ago | 0

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Answered
Does anyone have any experience or success using the manually written fixed-point fft provided by Mathworks in this example?
The FFT provided by DSP System Toolbox as MATLAB callable system object dsp.FFT or as the FFT block should be consistent with ea...

4 years ago | 0

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Why can't an fft function output an int data type?
MATLAB's built-in types are generally designed to favor operations producing an output of the same type as the inputs. (Key exc...

4 years ago | 1

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Why can't complex integer arithmetic be done?
The integers provided in base MATLAB were design to support image processing use cases. Integer types are also a special case o...

4 years ago | 1

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Is there a fixed-point alternative to the fft and ifft fiunction?
The FFT provided by DSP System Toolbox as MATLAB callable system object dsp.FFT or as the FFT block support fixed-point data typ...

4 years ago | 1

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reduce the working precision
I'm guessing you want your simulation code to be smaller and faster. Single precision floating-point provides around 7 decimal ...

4 years ago | 0

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How to fix error in port widths or dimentions on the reshape block input?
The purpose of Simulink's Reshape block and MATLAB's reshape command is only to "reinterpret" the dimensions (aka size) of the s...

4 years ago | 0

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Answered
Counter for Sawtooth signal in Simulink
The icon shows the Z-domain description of the Integrator block in accumulator mode (noting that K = 1) Y(z) = ( z / (...

4 years ago | 0

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How can I use fractional data types when the values are beyond the interval [-1, +1) ?
I recommend against trying to force a design to use fractional types. Using general fixed-point scaling instead of limiting only...

4 years ago | 0

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Answered
simulink fixed point advisor example file
The model used in Harhita's Webinar is attached along with a script to define an input object to trigger both of the model's sim...

4 years ago | 0

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Counter for Sawtooth signal in Simulink
Look at the edge detection blocks and the discrete integrator in accumulator mode. You can also look under the mask of the edge...

4 years ago | 0

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How can I make my simulation stop when my graph hits 0? (Simulink)
You can build a solution using the Stop Block. You'll need to build the logic that feeds the Stop Block input using relational...

4 years ago | 0

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Vector to matrix using assignment - Simulink
As Fangjun noted, MATLAB Function block is a good approach. It can also be done with a combination of reshapes and selector.

4 years ago | 0

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Answered
Move a simulink block to a existing subsystem using matlab script
Combination of add_block and delete_block commands should do the trick.

4 years ago | 1

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Converting continous time function to fixed point-help
First determine which parts of your model are intended for embedded system deployment. Isolate that portion into a subsystem or...

4 years ago | 1

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Vector to matrix using assignment - Simulink
Does the reshape block meet your needs?

4 years ago | 0

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Non uniform quantization block in simulink?
Flat Lookup Lookup Table Using Flat Interpolation can be used for arbitrary quantization to a set of specified quantization val...

4 years ago | 0