getRadioTime

Get current USRP radio time

Since R2023b

Add-On Required: This feature requires the Communications Toolbox Support Package for USRP Radio add-on.

Syntax

getRadioTime(radio)

Description

getRadioTime(radio) returns the current USRP™ radio time associated with the radio System object™ radio.

Examples

Get USRP Radio Time

Create an SDRu receiver System object. Set the pulse per second (PPS) signal source to be the PPS signal from a GPSDO.

rx = comm.SDRuReceiver(Platform="B210",SerialNum='3136D5F',...
                     PPSSource="GPSDO",ClockSource="GPSDO",...
                     EnforceGPSTimeSync=true,SamplesPerFrame=20000);

Get the current USRP radio time.

GPSLockStatus = 0;
    while ~GPSLockStatus 
        disp("Trying to lock to GPS constellation ...");
        GPSLockStatus =  gpsLockedStatus(rx);
    end  

Trying to lock to GPS constellation ...

linux; GNU C++ version 10.3.0; Boost_107800; UHD_4.2.0.0-vendor

---------- see libuhd version information above this line ----------

disp("GPS Locked");

GPS Locked

rx_data = rx();

USRP time synchronized to GPS time

radTime = getRadioTime(rx);
d = datetime(radTime,'ConvertFrom','posixtime','Format','MM/dd/uuuu HH:mm:ss','TimeZone','Asia/Calcutta');
fprintf('The current USRP radio time is %s',d)

The current USRP radio time is 07/27/2023 16:29:31

release(rx); 

Input Arguments

radio — USRP radio

comm.SDRuTransmitter System object | comm.SDRuReceiver System object

USRP radio, specified as a comm.SDRuTransmitter or comm.SDRuReceiver System object. The associated radio must be connected to the host computer.

Version History

Introduced in R2023b

R2024a: Support for N3xx and X3xx series radio devices moved to Wireless Testbench

Support for NI™ USRP N3xx and X3xx series radio devices has moved from Communications Toolbox™ Support Package for USRP Radio to Wireless Testbench™ Support Package for NI USRP Radios.

To configure these radios for use with Wireless Testbench, see Install Support Package for NI USRP Radios (Wireless Testbench).