getRadioTime

Get current USRP radio time

Since R2023b

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

    Syntax

    time = getRadioTime(radio)

    Description

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

    example

    Examples

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    This example uses:

    Open Live Script

    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

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

    Output Arguments

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    The current radio time in seconds, returned as a positive numeric scalar.

    Data Types: double

    Version History

    Introduced in R2023b

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    See Also

    Functions

    Objects