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Trouble Shooting#

Locally connect to the Pi via UART#

  • (todo: how to connect wires)
  • Serial-Port: /dev/ttyUSB0
  • Speed: 115200
  • login: root, no pw required

get logs from a service:#

  • journalctl -u client.service -b --no-pager (since the last boot)
  • journalctl -u client.service -f (live view of the journal)
  • journalctl --list-boots (shows list of available boots in the journal)

network:#

  • nmcli device show
  • nmcli connection show
  • nmcli con up/down name

Temperature (in milli°C):#

  • cat /sys/class/thermal/thermal_zone0/temp

run/manage services#

  • list all running services: systemctl status
  • get status: systemctl status client.service
  • start/stop service: systemctl start/stop client.service
  • start (as root) in terminal: client --debug
  • start (as apogee-user) in terminal: su -m apogee -c "client --debug"

test iridium-recording locally:#

  • (connect via UART)
  • cd /data/leocommon-config/job_files/
  • mkdir test
  • cd test
  • echo $'[osmosdr-source]\nsample_rate=5000000\ncenter_freq=1624000000\nbandwidth=5000000\ngain=14\nif_gain=40\nbb_gain=20' > hackrf.conf
  • cat hackrf.conf (verify everything is written correct)
  • iridium-extractor -D 4 hackrf.conf > output1.bits

Errors:

  • "sample rate missing!" means either wrong file-ending or wrong content
  • "RuntimeError: Faild to create FFTW wisdom lockfile..."
    first mount in read-write mount -o remount,rw /, then execute iridium-extractor, then mount in read-only mount -o remount,ro /.