722960-002 33
Intel
®
Ethernet Network Adapter E810-CQDA2T
User Guide
4.15 GNSS Advanced Features
To achieve the best GM, additional configuration might be required, like survey-in, cable delay, antenna
setting, and so on. This requires additional packages under Linux.
In addition to using the cat command, you can use 3rd party APIs to improve the position accuracy and
timing accuracy, as well as optimize the overall performance of the GNSS module. One of the most
popular GNSS Linux APIs is gpsd, which is Open Source and is support by community at:
https://gpsd.gitlab.io/gpsd/index.html
The gpsd API follows chip vendor original specifications and fully integrates into a rich GUI tool,
pygpsclient. Furthermore, gpsd provides the command line tool ubxtool, which support all original
configuration commands.
The optional GNSS module inside the E810-CQDA2T uses u-Blox 9-series chip ZED-F9T-00B. Before you
start yours first investigation, we suggest you study most popular questions at:
https://gpsd.io/faq.html#willitwork
4.15.1 Prerequisites and Steps to Fully Enable GNSS Features
Prerequisites:
• Python3.9+ and pip3 20.2+
• scons 4.2.0 or later
Note: Ensure that these components are installed correctly before any other step. During the
installation process, ensure that there are no hidden error messages. After the installation,
check if scons is present.
(# scons -v)
Note: Before installing gpsd on your system, ensure that all parts of any previous installation have
been removed. Do not mix gpsd parts from different sources. The gpsd clients and the
server must be of the same version.
Steps to prepare system and install gpsd:
Note: For additional information, refer to https://gpsd.io/installation.html.
1. If you cannot find the /dev/gnss0 (depends on the kernel) file, ensure that you are using the E810-
CQDA2T with the optional GNSS installed and the latest driver and NVM (see Section 3.1).
2. If you receive any error message from the above two commands, follow the trouble shooting guide
to solve OS and kernel dependencies:
https://gpsd.io/installation.html#_check_that_your_system_configuration_will_allow_gpsd_to_work
3. A minimum build of gpsd can run near bare metal; C runtime support is the only requirement. The
test clients and various additional features have additional prerequisites found at:
https://gpsd.io/installation.html#_check_your_installation_prerequisites
Note: It is important to install system dependencies using your system package manager first,
before installing SCons or Python dependencies.
Note: On some systems, GPSD might not work properly as a service out of the box. If that is
the case, check that your systemd configuration files are set correctly.
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