Why i do not get a fixed point out from a FFT HDL optimized block in simulink?
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Cristhian campos
el 13 de Jun. de 2019
Comentada: Bharath Venkataraman
el 19 de Jun. de 2019
I am creating a HDL model on simulink,
using a fixed-point input on FFT HDL Optimized i get a double output, and the block parameters does not have the option of "scaling" or modify the output data type.
I am running a 2015b matlab version
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Bharath Venkataraman
el 19 de Jun. de 2019
Editada: Bharath Venkataraman
el 19 de Jun. de 2019
I may need the model to do further debugging. In the meantime, I created a simple FFT model in R2018b which seems to do the right thing in terms of datatypes. One change from your model is that the values are sent in serially to the FFT rather than all at once. I have also attached a model created in 15b.
I defined the input fftIn as:
fftIn = complex(rand(128,1),rand(128,1));
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Bharath Venkataraman
el 19 de Jun. de 2019
Great! FWIW, the next few releases have a lot more capabilities for the block, so if you are able to get to a later release like R2018a, you can use these capabilities.
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Bharath Venkataraman
el 18 de Jun. de 2019
Could you double click on the FFT block and send a snapshot of its parameters?
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