HDL Parser error: Unsupported data-type sfixed in "Fpga-in-the-loop"
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I have some .vhd files which were not generated using HDL coder but have been successfully co-simulated using modelsim. However when I try to simulate using the FPGA-in-the-loop wizard, it seems to have problems in using the sfixed or ufixed types of variables, which use the ieee fixed_pkg library. Is there a solution for that? Did anyone manage to run .vhd files with sfixed data-type using this libraries for FIL simulations???
Tim McBrayer on 19 Mar 2013
How are you getting VHDL-2008 code into Simulink in FIL mode? HDL Coder doesn't generate any 2008-specific constructs. If you are bringing it in with a Black Box, you will need to tweak how your VHDL compiler and simulator are invoked, to make sure that they are invoked in a way that enables VHDL-2008 features.
Tao Jia on 20 Mar 2013
To use FPGA-in-the-Loop, the I/O port on the top-level entity must be std_logic_vector or std_logic type. The ufixed and sfixed data types you have are not supported.
To fix the problem, you can probably use To_slv function to convert those data types to std_logic_vector.