The fpga-fft from owocomm-0

'fft4_large_scale_div_sqrt_n' is not defined

Hi, first thanks for your work!
I tried to use it, but I found a problem when try to run the generator:

$ ./gen_fft.py fft fft1024_wide                                                                                                      
Traceback (most recent call last):
  File "./gen_fft.py", line 8, in <module>
    from gen_fft_layouts import *
  File "/fpga-fft/codegen/gen_fft_layouts.py", line 119, in <module>                                                                                          
    fft4_large_scale_div_sqrt_n),
NameError: name 'fft4_large_scale_div_sqrt_n' is not defined

This value is not defined in the gen_fft_layouts.py code.

Best!

I always get an AssertionError

I fixed the "fft4_large_scale_div_sqrt_n is not defined" issue by assigning a default value as I do not want to use it.

Now I wanted to generate the fft core by using this command:
./gen_fft.py fft INSTANCE_TO_GENERATE

Regardless of which INSTANCE_TO_GENERATE I use, I get an AssertionError.

I added some prints to the gen_fft_modules.py file.

line 222:	class FFT4Step:
line 223:		def __init__(self, N, sub1, sub2, multiplier=defaultMult, twiddleBits='twBits'):
line 224:		print("N = ", N)
line 225:		print("sub1 = ", sub1.N)
line 226:		print("sub2 = ", sub2.N)
line 227:		assert N == (sub1.N*sub2.N)

Here is the error log:

./gen_fft.py fft fft256
('N = ', 16)
('sub1 = ', 4)
('sub2 = ', 4)
('N = ', 16)
('sub1 = ', 4)
('sub2 = ', 4)
('N = ', 16)
('sub1 = ', 4)
('sub2 = ', 4)
('N = ', 8)
('sub1 = ', 4)
('sub2 = ', 2)
('N = ', 32)
('sub1 = ', 8)
('sub2 = ', 4)
('N = ', 16)
('sub1 = ', 4)
('sub2 = ', 4)
('N = ', 64)
('sub1 = ', 16)
('sub2 = ', 4)
('N = ', 64)
('sub1 = ', 16)
('sub2 = ', 4)
('N = ', 64)
('sub1 = ', 16)
('sub2 = ', 4)
('N = ', 16)
('sub1 = ', 4)
('sub2 = ', 4)
('N = ', 8)
('sub1 = ', 4)
('sub2 = ', 4)
Traceback (most recent call last):
  File "./gen_fft.py", line 8, in <module>
    from gen_fft_layouts import *
  File "/media/soc/Volume/master-thesis/ft_cores/fpga-fft/fft-core/codegen/gen_fft_layouts.py", line 135, in <module>
    fft4_scale_none));
  File "/media/soc/Volume/master-thesis/ft_cores/fpga-fft/fft-core/codegen/gen_fft_modules.py", line 227, in __init__
    assert N == (sub1.N*sub2.N)
AssertionError

Am I doing something wrong here?
How can I solve the issue?

I would appreciate an answer.
Best regards

a question

Why is the barrelshift module called in transposer_adder_gen not exist, what is the parameter in the barrelshift ?

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'fft4_large_scale_div_sqrt_n' is not defined

I always get an AssertionError

a question

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