[Discuss-gnuradio] Real Data only Transfer?

[Kilian Timmler]

Hi,

after some time spent on other issues I finally have some time to play with the 
gnuradio again.

One important problem I had was that I would have liked to have a real data 
only mode to get 16MSamples/s 
with one channel an dno processing. After I had a look at rx_buffer.v, I found 
that the 8-bit mode already 
reduces the rate to the one needed by a real mode only receive scheme. 

So if I would change line 104 in rx_buffer.v to:

assign fifodata_8 = {bottom};

I should get now only I data, when using 8 bit mode. I'm interested in keeping 
changes small because my Verilog 
skills have become quite rusty since college. Quartus doesn't complain much 
except about 'top' never being read.

I havn't tried yet, since I'm not sure how much luck I would have with running 
my own bitstream 
(can I destroy anything with a simple change like this?).

I assume that I can use only one channel and set the decimation to 4, to 
finally get to 16MSamples/s. To get the real straight through operation I 
suppose I would
have to switch off the filtering (more Verilog) and set the NCO to zero 
frequency, but maybe keep the decimator or use an external clock source. 

Please tell me whether I'm on the right track.

Regards,

Kilian



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