Why does Real-Time Workshop throw a datatype error message even though I am not using any custom datatypes?

Why does Real-Time Workshop throw a datatype error message even though I am not using any custom datatypes?

I have a model that uses fixed-point datatypes. It simulates without a problem. However, when I try to build my model, I get the following error message.

 Error using ==> make_rtw

 Error using ==> tlc_c

 Error using ==> rtwgen

 Invalid run-time parameter registered by block 'GHz/5.2 GHz DFE (fxp)/CCE & LS GI Detection

 (fxp)/metric and phase difference accumulator/Unit Delay1'. 

 All run-time parameters must resolve to a valid Simulink datatype.

Answer 1

[MathWorks Support Team]

This bug has been fixed for Release 14 SP1 (R14SP1). For previous releases, please read below for any possible workarounds:

Simulink can handle fixed-point data of length up to 128 bits. Real Time Workshop can only handle a fixed-point data length of 32 bits. The documentation of this limitation is available by entering the following command at the MATLAB command prompt:

web([docroot '\toolbox\fixpoint\c7_code3.html#3988'])