Delay balancing unsuccessful. Cause: Non-discrete rates cannot be handled by delay balancing. Offending block: sqrt_to_hdl

Question

Andrew Sol 2024-6-26

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https://ww2.mathworks.cn/matlabcentral/answers/2132261-delay-balancing-unsuccessful-cause-non-discrete-rates-cannot-be-handled-by-delay-balancing-offen

回答： Tom Richter 2024-6-28

采纳的回答： Tom Richter

sqrt_to_hdl_coder.slx

在 MATLAB Online 中打开

Hello,

I am getting this error when generating Verilog at the HDL Coder:

Error:
For the block 'sqrt_to_hdl_coder/Sqrt'
Delay balancing unsuccessful. Cause:
Non-discrete rates cannot be handled by delay balancing.  Offending block: sqrt_to_hdl_coder/Sqrt

This error occurs when I try to convert the entire schema into Verilog (Generate HDL Code). Previously there were errors related to the data type, I fixed this by setting a "fixed-point" in the input and output settings, and also setting restrictions (min and maximum).

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Answer 1

Tom Richter 2024-6-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2132261-delay-balancing-unsuccessful-cause-non-discrete-rates-cannot-be-handled-by-delay-balancing-offen#answer_1478256

Hi Andrew,

You can only generate HDL code from discrete models. That means, you need to set a sample time. Seeing your model you use an ODE solver and even a veriable step one. Even though HDL Coder allows these solver settings the system you generate code for must be discrete. Please have a look here and also follow the HDL Tutorial.

Best regards,

Tom