Re: [USRP-users] RFNoC user registers and related APIs

2017-08-22 Thread Tom Bereknyei via USRP-users
Dario, I've been working on a similar requirement. how strict are your timing needs? For prototyping we were able to get microsecond timing with just a scheduler implemented in python on an E310. The other major limitation right now is that RFnoc does not implement the UHD tagging of samples on

Re: [USRP-users] Problems receiving valid data from a multi_usrp

2017-08-22 Thread Janos Buttgereit via USRP-users
Hi, as I said before, I had no chance to access the hardware for some time, but today I had some time. First of all: I got the time synchronization working. In addition to setting the time source and setting an initial time through set_time_unknown_pps it took some time for me to find out

Re: [USRP-users] Support with setting usrp sampling rate to 150MSPS

2017-08-22 Thread Snehasish Kar via USRP-users
Ok I will try that. BR Snehasish On 22-Aug-2017, at 8:51 PM, Derek Kozel > wrote: Try 200MS/s. The FPGA can only decimate integer amounts from the ADC rate, which is 200MS/s. On Tue, Aug 22, 2017 at 5:15 PM, Snehasish Kar via USRP-users

Re: [USRP-users] Problems receiving valid data from a multi_usrp

2017-08-22 Thread Marcus D. Leech via USRP-users
I again encourage you to look at rx_multi_samples which shows how to properly set-up a multi-motherboard configuration. On 2017-08-22 10:34, Janos Buttgereit via USRP-users wrote: > Hi, > > as I said before, I had no chance to access the hardware for some time, but > today I had some time.

Re: [USRP-users] Support with setting usrp sampling rate to 150MSPS

2017-08-22 Thread Derek Kozel via USRP-users
Try 200MS/s. The FPGA can only decimate integer amounts from the ADC rate, which is 200MS/s. On Tue, Aug 22, 2017 at 5:15 PM, Snehasish Kar via USRP-users < usrp-users@lists.ettus.com> wrote: > Hello > I am trying to receive gsm 1800 band using NI USRP 2954R, but when I am > trying to set the

[USRP-users] Support with setting usrp sampling rate to 150MSPS

2017-08-22 Thread Snehasish Kar via USRP-users
Hello I am trying to receive gsm 1800 band using NI USRP 2954R, but when I am trying to set the sampling rate of uhd_source in gnuradio to 150 MSPS, it's giving an error message saying hardware does not support sampling rate above 100MSPS. Please help! BR Snehasish

Re: [USRP-users] RFNoC user registers and related APIs

2017-08-22 Thread Dario Pennisi via USRP-users
Hi Jonathon, Thank you for your feedback. There's one more thing I am missing. I need to implement closed loop frequency hopping in the sense that my rfnoc block demodulates a signal, provides demodulated data to host along with timestamp and host needs to send a timed command to another block

Re: [USRP-users] Is it possible to combine several X310 for MIMO/Beamforming applications using the RFNoC framework?

2017-08-22 Thread liu Jong via USRP-users
Hi,martin, if so,how do we focus the data on a FPGA for processing? We plan to use 4 number of X310 for 8X8MIMO, and now we want to use the rfnoc framework for real-time signal processing. How do we focus the data on a x310 for processing?. Because the collected data comes from different x310.

[USRP-users] RFNoC user registers and related APIs

2017-08-22 Thread Dario Pennisi via USRP-users
Hi, I have some doubts on the interfaces available on noc shell and axi wrapper. Based on the deep dive slides noc shell provides 3 bidirectional busses: * Command & response Looking at the noc_shell code this should be indicated as control source. This bus seems to be able to send commands