Stimulus in /templates/sim_testbench_14.7/stimulus.vhd is missing

[Guanwen (Henry) Zhong]

Dear ReconOSers,

I have ported the testbench and want to test the custom IP. Thus I extract files in templates/sim_testbench_14.7. However, for sort_demo, the stimulus at Line 56 in /demos/sort_demo/build.sim.sortdemo/stimulus.vhd is missing. Could you provide any hints (I mean steps to generate the correct stimulus by ourselves)? Thanks for your help. :-)

Best regards,

Guanwen (Henry)

[Guanwen (Henry) Zhong]

After explicitly writing contents of tb_osif_mbox_get() into stimulus.vhd below Line 56 (I have commented "tb_osif_mbox_get(tb_i_osif, tb_o_osif, x"00000000");tb_osif_mbox_put(tb_i_osif, tb_o_osif); "), I can see the input data in modelsim. 

I do not know why the procedures (tb_osif_mbox_get/put in reconos_pkg_tb.vhd) are not working properly.

[Christoph Rüthing]

Hi Guanwen,

I'm not sure what you mean by "ported the testbench", but basically you should be able to also use it for your own hardware threads. I admit, that the current implementation of the osif_... functions in the test package is not very well-engineered (using wait statements). I remember that it as a little bit fiddly to make everything working correctly and get the correct timings. Furthermore, I think no one used them with modelsim but only with ISim, maybe there are some differences in how they are simulated.

Yours,
Christoph

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[Guanwen (Henry) Zhong]

Thanks Christoph. Maybe it is caused by the difference between modelsim and isim. Anyway, I can modify the testbench to verify own hw threads based on your template. :-)