Hi Tim, Look at noc_block_fft_tb.v for an example on how to operate on a 32-bit sample by sample basis. Unfortunately, if you want to do sizes smaller than 32-bit, you'll need to write your own version of send()/recv() or push_word()/pull_word() from sim_rfnoc_lib.svh.
Jonathon On Tue, Aug 27, 2019 at 1:05 PM Timothy Kurp via USRP-users < usrp-users@lists.ettus.com> wrote: > Hey Users! > > I think this may be a possible deficiency in the test bench architecture, > or perhaps I just don't know how to instrument it properly. I have a custom > block that performs a 2:1 rate change roughly, performing compression of > the 16 bit I/Q from the radio down to a 16 bit word that is compressed, I > won't describe how. There is a corner case if EOB occurs when there is an > odd number of samples received from the radio. I have handled this by using > simple mode = 0, manipulating cvita header manually and throwing tlast to > make packets, with success. The noc block works, but I am struggling with > how to exercise the corner case in the testbench. > > From what I have seen, the testbench only allows for EOB to be manipulated > on sample counts that are a multiple of 2 (send() operates on 64 bits, or 2 > samples of 16 bit I/Q). We have looked at the source and there doesn't seem > to be an easy way to throw EOB/TLAST on odd samples.We also think it is not > guaranteed that this will never happen from the radio. Thoughts? > > Tim > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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