Hi Yasir, Maybe you could add another RFNoC CHDR port to your block just for streaming the parameter data. So it would have a dedicated streamer separate from the one used for ADC data.
Wade On Fri, Feb 17, 2023 at 2:53 AM Yasir Özçalık <simultaneou...@gmail.com> wrote: > Hi everyone, > I have a problem with DMA. I am trying to build a custom RFNoC block which > finds pulse parameters (pulse width, pulse repetition interval and > frequency) and stores them in a block ram. I have built it and it worked in > simulation. The problem is I wanna read those parameters from the host. If > I try to read them via registers, it is too slow. Therefore; I thought that > I must use DMA to do that. > > In order to reach that goal, I did the things below; > I statically connected my 2 ports to endpoints. and in the UHD > application, I connected the radios (RX) to my block and connected my block > to the radios (TX) again. In this way, I successfully took all the ADC > datas to my block in the FPGA and processed them. > > The problem is when I processed the data in the FPGA and tried to read > parameters back in the host, I needed to use the rfnoc_chdr port and it is > used by radio for ADC datas. Therefore; I thought I needed to disconnect > the connection from my port to the radio and connect my port to > rx_streamer. But, it did not work. It gave an error saying that "attempting > to reconnect the block". Can anyone give me advice to read parameters fast > that my block produced by processing the ADC datas. > > Note: I don't wanna take all the ADC datas to the host, but only the > parameters which my RFNoC block produced while not blocking the ADC signals > arriving at my block. > > Device : USRP E320 > Host : Ubuntu 20.04 - 1GbE > > Kind Regards, > Yasir. > > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
_______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
