How ro restore a fixed-pointed and saved model to its unfixed state?

My fixed-pointed model has already saved .But I want to change some fuctions on its unfixed state.The "Restore Original Model"button just can restore the model which is being optimized.Is there a solution,please?

Answer 1

[Brenda]

Hi Chan,

Thanks for your question!

Since your model is already converted to fixed-point, you now may want to use Data Type Override functionalities to recover the floating-point behaviors before the conversion.

You only need to maintain one model for simulation behaviors in original floating-point and fixed-point.

https://www.mathworks.com/help/fixedpoint/ug/fixed-point-instrumentation-and-data-type-override.html

You can also use Iterative workflow in Fixed-Point Tool to continue conversion steps in your current model.

You also described the challenge to track the changes during your modeling process. I suggest you check out the modeling tool called Design Evolutions. More specifically, you can follow the workflow steps from Fixed-Point Tool.

https://www.mathworks.com/help/simulink/ug/about-design-evolutions.html

https://www.mathworks.com/help/simulink/ug/use-design-evolution-manager-with-the-fixed-point-tool.html

Feel free to ask more questions on MATLAB Answers when using the tools. Thanks!

[Zora Aria Jade]

Thanks for your reminding! Using Design Evolution Manager with the Fixed-Point Tool is a good idea!

I will give it a try later.

Answer 2

[Kiran Kintali]

>>I want to change some fuctions on its unfixed state.

Do you mean the restore step in the Fixed-Point Tool failed for you and left you in the partially converted state?

Can you share the steps you have used to restore the model to its original state?

https://www.mathworks.com/help/fixedpoint/ug/restore-model-to-original-state.html

Restore Model to Original State

During the Prepare System for Conversion step, the Fixed-Point Tool creates a restore point for your model. After the conversion process, if you want to restore your model to its state at the start of the conversion process, in the Fixed-Point Tool, click Restore Original Model. The Fixed-Point Tool closes your model and reopens the model in its original state. Any changes made to your model after the preparation stage of the conversion are removed.

[Zora Aria Jade]

Sorry,I did not make it clear. The restore step in the Fixed-Point Tool just can restore the model which is not saved.But my model has been saved, and I want to change something on its original state: lock all of its input ports to the same data type and then fix it again.

[Kiran Kintali]

Unfortunately this may not be possible in the current workflow. Please reach out to tech support with your expectations on the workflow.