How can I get correct simulation result from generated SystemVerilog model in which DPI-C setparam function has vector parameter

I made SystemVerilog module with DPI-C interface and C source files from simulink subsystem. The subsystem has 1x4 vector parameters which specify nominator and denominator coefficients. SystemVerilog with C object,compiled to .so lib, runs on Cadence INSICIVE platform. But the simulation result is not correct. When I set the coefficients to secondary delay-system, the output response of step input is nothing,still low. Setparam call description is below. DPI_XX_setparam_den(obj,'{den3,den2,den1,den0});

Answer 1

[Dave Gutierrez]

1. The DPI-C component uses unpacked arrays so I will try removing the " ' " infront of " '{den3,den2,den1,den0} ".

2.Where are you calling the set param function?, in the initial block? or reset?. Make sure you are not inadvertently triggering the DPI_*_initialize routine and wiping out your new parameter values.

If this still does not work feel free to attach a model, and I ll take a closer look.