MATLAB error MATLAB error message:

Parameters must be of type double or char for Real-Time Workshop if the S-function does not have TLC. what should i do?

Answer 1

[Kaustubha Govind]

The error message seems pretty clear - your S-function can only have double or char type parameters to be supported for code-generation. What type are you using?

[chen]

i'm a newer，so how to change the matlb to work around using doubles？

[Jan]

@chean: At first, please describe what you are doing currently to produce the error. It is hard to suggest a modification, if the action is not known.

[chen]

i try to run a filter，but it tells me that S-function 't1/AddSub' parameters must be of type double or char for Real-Time Workshop if the S-function does not have TLC.

[Kaustubha Govind]

Did you write that S-function? What are the parameter defined for it, and what are the types?

[Jan]

@chen: Sorry for the typo in the name.

Consider, that you are familiar with the problem and see it directly on your screen, but the readers in this forum do not have the faintest idea about what you are doing. Please add all necessary information by editing the original question, not as comments to an answer. Thanks.

[chen]

i was used the model which was in the xilinx blockset,S-function 't1/AddSub' parameters must be of type double or char for Real-Time Workshop if the S-function does not have TLC when i run the model

[Kaustubha Govind]

Are you attempting to generate HDL code? If yes, there is a different process to generate HDL code from Xilinx Blocksets. See page 49 here: http://www.xilinx.com/support/documentation/sw_manuals/xilinx12_2/sysgen_gs.pdf

Also, I would urge you to fix your question like Jan suggested so that this discussion is useful for other users.