HDL Coder failing for single-precision

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Andrew Nicol
Andrew Nicol 2020-8-27
编辑： Andrew Nicol 2020-11-12
I have a single-precision sub-module that is failing HDL generation when using the native floating point library with the following error in R2019b (both Update 4 and 6):
Compilation errors when generating code for: model/subsystem\reset_in Error during MATLAB code compilation: Error Path: /usr/local/MATLAB/R2019b/toolbox/hdlcoder/hdlcommon/emlauthoring/wireops/hdleml_switch_multiport.p Error Location: (@Row: --> 1 @Column: --> 1) This assignment writes a 'double' value into a 'single' type. Code generation does not support changing types through assignment. Check preceding assignments or input type specifications for type mismatches. Internal Error: This error occurred inside a MathWorks function.
I have a work-around so this isn't blocking me but can someone from Mathworks take a look "under the hood"?
Thanks,
Andy

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Andrew Nicol
Andrew Nicol 2020-11-12
编辑：Andrew Nicol 2020-11-12
Adding more context: with a different model, I encountered this same issue. Interestingly, I can make it go away by unselecting the "Minimize intermediate signals" option. Hopefully that will help anyone else that gets hit by this...

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Kiran Kintali
Kiran Kintali 2020-8-27
Thank you for reporting this error. This is unexpected.
Can you share a reproduction model? It will help verify this issue is resolved and/or publish a workaround or patch for the OriginatedIn release.
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Kiran Kintali
Kiran Kintali 2020-8-27
Thank you for the response.
You can share the following information to help the development team isolate the issue and make sure it is resolved in the 20a or one of the upcoming releases.
  1. Release you are into this issue (output of ver command)
  2. HDL Coder options used during code generaiton hdlsaveparams('model/path_to_dut')
  3. makehdl('model/path_to_dut', 'debug', 1/2/3/4) one of these debug levels sometimes isolates the issue and points to the block running into the issue.
  4. If you already have a work-around (such a block replaced) you can provide a sample model with just the block that got replaced etc., if it can reproduce the same issue.
You can reach out to me kiran.kintali@mathworks.com or support@mathworks.com for further assistance if any needed.
Andrew Nicol
Andrew Nicol 2020-8-27
Hi Kiran - I sent you the log files via email. I'll close out this question and we can continue in email form :-)

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