FFT based filter from Open Core!!

[h_rafii]

THE VHDL file and PDF for that is attached here

View attachment fft_fir_filter_latest.tar.gz


Hi;
i have downloaded the fft based filter from opencore and wanna simulate it with ISE for spartan6 l x100 , but it have some unspacefic errors,

can any one tel how to solve it?

THE PROGRAM

opencores.org/project,fft_fir_filterACHED.

 

[TrickyDicky]

why not post the errors?

 

[h_rafii]

dear friend i have attached the program in first line of my post please simulate and tel me what is the cause of the errors.

there is no specific error !!!!

errors:

ERROR:HDLCompiler:40 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 328: control is not a entity
ERROR:HDLCompiler:66 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 328: control is not an entity
ERROR:HDLCompiler:854 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 95: Unit <alfft_cores> ignored due to previous errors.

 

[ads-ee]

dear friend i have attached the program in first line of my post please simulate and tel me what is the cause of the errors.

there is no specific error !!!!

If there is no error then it must be working. You've done nothing to make anyone want to spend any effort to setup and run a simulation. You seem more interested in testing our ability to run a simulation and tell you what is wrong than lift a finger to tell us what you think is wrong and why.

And consider reading this...http://www.catb.org/~esr/faqs/smart-questions.html

 

[h_rafii]

Dear friend I apologies if i asked badly;

in fact i need to scan 0-10 Mhz frequency band and i wanna use this core to do it.

but i have receive these errors:

ERROR:HDLCompiler:40 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 328: control is not a entity
ERROR:HDLCompiler:66 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 328: control is not an entity
ERROR:HDLCompiler:854 - "E:\Users\FFT_Filter\alfft_core_slip.vhd" Line 95: Unit <alfft_cores> ignored due to previous errors.

when i'm runing the simulation.

i suggest that its my wrong not the program. but i cant find the problem because errors are not clear and have no comment with themselves to help me;

i will be thankful to have your points on it please.

thanks alot

 

[ads-ee]

Did you compile control_slip.vhd? That is the file where the CONTROL entity is described.

I'm not sure this is the correct syntax for an entity instantiation: U_CNTRL:entity CONTROL(CONTROL_SLIP), but as I'm not a VHDL guru I can't say for sure, but examples I've found online show something more like U_CNTRL : entity work.CONTROL

Besides this you've also included a component declaration for CONTROL along with the entity declaration? Either use one style or the other, I'm not sure what happens if you have both for the same component.

 

[TrickyDicky]

from a quick look, it appears the alfft_core_slip has a component called control that doesnt match the control entity definition in the control_slip.vhd.

I would generally stear clear of stuff on opencores.org. It's far too easy to get code that is badly written and unmaintained.