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| Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours. | | Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours. |
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| == Required packages ==
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| Some of the packages are merely for convenience, but most are required to run the intended applications.
| | == Installation issues == |
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| libreadline-dev
| | [[Weather monitor installation | Installation issues]] issues. |
| libopencv-dev
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| libgpiod-dev
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| gpiod
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| cmake
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| subversion
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| aptitude
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| apt-file
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| telnet
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| ntp
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| ntpdate
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| nmap
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| lsof
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| libpaho-mqtt-dev
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| libpaho-mqttpp-dev (if not available, then not needed)
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| python3-paho-mqtt
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| python3-opencv
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| python3-setproctitle
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| mosquito
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| mosquitto-dev
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| mosquitto-clients
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| libusb-dev
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| libcli11-dev (maybe not available)
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| libgeographiclib-dev
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| libpaho-mqttpp-dev
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| qt6-base-dev
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| qt6-tools-dev
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| libxkbcommon-dev
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| sudo apt install libreadline-dev libopencv-dev libgpiod-dev gpiod cmake subversion aptitude apt-file telnet ntp ntpdate nmap lsof python3- paho-mqtt libpaho-mqtt-dev python3-opencv python3-setproctitle mosquitto mosquitto-dev mosquitto-clients libusb-dev libcli11-dev libgeographiclib-dev libpaho-mqttpp-dev qt6-base-dev qt6-tools-dev libxkbcommon-dev
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| === For Python install ===
| | [[Wearher monitor modules | Modules]] |
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| pip install geographiclib
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| or
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| sudo apt install python3-geographiclib
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| === Build ===
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| Code is found here (on SVN)
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| svn co svn://repos.gbar.dtu.dk/jcan/svnjca/projekter/gnss_receiver
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| The C++ code is then in qt/gnss_qt
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| Build by
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| cd gnss_receiver/qt/gnss_qt
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| mkdir -p build
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| cd build
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| cmake ..
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| make -j3
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| Run to create a configuration file
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| ./gnss_qt
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| == CMake problem ==
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| === GeographicLibConfig.cmake ===
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| The find package
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| find_package(GeographicLib REQUIRED)
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| in cmake fails, as the file GeographicLibConfig.cmake is not found.
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| This can be fixed by renaming the provided file ''FindGeographicLib.cmake'' by
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| cd /usr/share/cmake/geographiclib
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| sudo ln -s FindGeographicLib.cmake GeographicLibConfig.cmake
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| === XKB ===
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| Missing library, and CMake complains:
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| -- Could NOT find XKB (missing: XKB_LIBRARY XKB_INCLUDE_DIR) (Required is at least version "0.5.0")
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| The solution was to install
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| sudo apt install libxkbcommon-dev
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| This occurred on Raspberry Pi 4-5 using the 64-bit default OS.
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| == Configure ==
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| After the gnss_qt is run the first time, there should be a default configuration file
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| [service]
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| logpath = log_%d/
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| ; the '%d' will be replaced with date and timestamp (must end with a '/'). =
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| max_logging_minutes = 60.0
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| log_service = true
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| [mqttin]
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| broker = tcp://localhost:1883
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| context = ublox9/
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| clientid = ublox9_in
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| function = nmea/
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| system = ublox9/
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| log = true
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| print = false
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| use = false
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| [gnss]
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| ;input = /dev/ttyACM0
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| input = ../../../log/log_24h_asta_mqtt.txt
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| input_use = true
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| log = false
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| interval_sec = 0
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| logtime = false
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| [ini]
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| ; set 'saveconfig' to 'false' to avoid autosave =
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| saveconfig = true
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| version = 2285 2025-06-26 07:20:46
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| [mqttinw]
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| broker = tcp://192.168.2.216:1883
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| context = not used
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| clientid = weather_in
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| function =
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| system = weather7/
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| log = true
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| print = false
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| use = true
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| There are two input alternatives:
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| * From a file (default may be ''/dev/ttyACM0'') or a logfile generated by the MQTT streamer for NMEA messages. Set ''input_use = true'' to use this alternative.
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| * Group ''[mqttin]''. It is for use with an MQTT server that streams the NMEA messages. Change the IP in the ''[mqttin]'' group and change to ''use=true''. The NMEA messages are assumed to be in the payload of the message, and the subject as described (subscribing to 'ublox9/nmea/#').
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| * Group ''[mqttinw]'' is the input source for weather information.
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