Hi Ming, For static coefficients, try setting RELOADABLE_COEFFS = 0 and USE_EMBEDDED_REGS_COEFFS = 0. I did a quick simulation and it seemed to work, but I didn't spend much time checking it. Make sure you also set NUM_COEFFS and COEFFS_VEC correctly where the rfnoc_block_fir_filter is instantiated. The testbench has examples of how to do this.
Thanks, Wade On Thu, Jul 8, 2021 at 5:42 PM Ming You <m....@lboro.ac.uk> wrote: > Dear ALL, > > I am trying to modify the RFNoC fir filter block to a static coeffs. fir, > and I've managed to use the Vivado simulator to monitor the simulation > waveforms generated by the testbench code. > > Strange things to me are that: > > 1. When enabling the reloadable feature (i.e., RELOADABLE_COEFFS =1), and > enabling the DSP-embedded reg feature (USE_EMBEDDED_REGS_COEFFS=1), > everything will work alright and the outputs are expected. > 2. When enabling the reloadable feature (i.e., RELOADABLE_COEFFS =1), and > disabling the DSP-embedded reg feature (USE_EMBEDDED_REGS_COEFFS=0), there > are some outputs but not expected. > 3. When disabling the reloadable feature (i.e., RELOADABLE_COEFFS =0), and > disabling the DSP-embedded reg feature (USE_EMBEDDED_REGS_COEFFS=0), there > are outputs but the outputs are simply XXXX. > > Can anyone tell me how to correctly configure the rfnoc_block_fir_filter > or its sub-modules, so that it can work with static coeffs.? Or this rfnoc > block is intended to work only under reloadable+embedded setup, while the > static coeff. was initially ok to use but later not maintained? > > Thank you for your time and kind help in advance! > > Ming > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
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