Ettus E3XX Getting Started Guide ANGRYVIPER Team
5.2 Setup system time reference
If Linux system time is not required to be accurate, this step may be skipped.
For either Network or Standalone mode, the following settings that are passed by mynetsetup.sh/mysetup.sh to
the zynq_net_setup.sh/zynq_setup.sh scripts may require modification:
• Identify the system that is to be used as a time server, where the default is “time.nist.gov” and is set in
/mnt/card/opencpi/ntp.conf. A valid time server must support ntp.
• Identify the current timezone description, where the default is “EST5EDT,M3.2.0,M11.1.0”. Change this if
required for the local timezone. See man tzset on the host PC for more information.
• If a time server is not required, or cannot connect to a time server, the user is required to manually set the
time at start up. Use the date command to manually set the Linux system time. See man date on the host
PC for more information.
5.3 “rsync” provided binary
An ARM-compiled version of “rsync” is provided in the included SD card image for xilinx13_4. This tool allows
the use of standalone mode while shortening the required developer time to synchronize the artifacts being
developed. For command-line usage, see the rsync home page. Th e easiest usage is to have the radio “pull” from the
developer’s workstation; this does not need any additional command-line arguments.
Implementation Details
Unfortunately, the “rsync” executable is not in the default path because when called remotely, it requests a
non-interactive shell. For this reason, a “pull” approach is recommended. If a user for some reason requires a “push”
from the workstation to the radio, the local “rsync” executable must be told the remote location of the rsync
executable to call, e.g. rsync –rsync-path=/mnt/card/opencpi/xilinx13_4/bin/rsync
6 Development Host Setup - Network Mode ONLY
6.1 Network Mounting Mode
The NFS server needs to be enabled on the host in order to run the SDR in Network Mode. The following sections
are directions on how to do this for both CentOS 6 and CentOS 7 host operating systems.
6.1.1 CentOS 6
From the host, install the necessary tools using yum:
% sudo yum install nfs-utils nfs-utils-lib
% sudo chkconfig nfs on
% sudo service rpcbind start
% sudo service nfs start
From the host, add the following lines to the bottom of /etc/exports and change “XX.XX.XX.XX/MM” to a valid
netmask for the DHCP range that the SDR will be set to for your network (e.g. 192.168.0.0/16).
% sudo vi /etc/exports
/opt/opencpi XX.XX.XX.XX/MM(rw,sync,no_root_squash,no_subtree_check)
<host core project location> XX.XX.XX.XX/MM(rw,sync,no_root_squash,no_subtree_check)
<host assets project location> XX.XX.XX.XX/MM(rw,sync,no_root_squash,no_subtree_check)
% sudo exportfs -av
From the host, restart the services that have modified for the changes to take effect:
% sudo service nfs start
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