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OpenIPC Wiki

Table of Content

Quick Setup of Ground Station for OrangePi 5 Ubuntu 22.04

Logo  Logo

Prepare

sudo apt update
sudo apt upgrade

Download and install the Linux kernel headers for rockchip rk3588

https://drive.google.com/drive/folders/1R7VmAeo3_LpFDQvYSEG9ymAC-DvaLt47

sudo dpkg -i linux-headers-legacy-rockchip-rk3588_1.1.2_arm64.deb
sudo dpkg -i linux-image-legacy-rockchip-rk3588_1.1.2_arm64.deb

Wifi card driver

To disable add it to the blacklist:

sudo bash -c "cat > /etc/modprobe.d/wfb.conf <<EOF
# blacklist stock module
blacklist 88XXau
blacklist 8812au
blacklist rtl8812au
blacklist rtl88x2bs
EOF"

Compile the driver from source:

git clone -b v5.2.20 https://github.com/svpcom/rtl8812au.git
cd rtl8812au/
sudo ./dkms-install.sh

Installing WFB-NG

Using the "nmcli" command, we find out the name of your wifi adapter and substitute $WLAN in the place

git clone -b stable https://github.com/svpcom/wfb-ng.git
cd wfb-ng
sudo ./scripts/install_gs.sh $WLAN

and enable auto-upload

sudo systemctl enable wifibroadcast

Channel configuration

sudo vi /etc/wifibroadcast.cfg

Copying the encryption key from an IP camera

sudo scp root@192.168.1.10:/etc/drone.key /etc/gs.key

and restarting wfb-ng:

sudo systemctl restart wifibroadcast@gs

Start WFB CLI

wfb-cli gs

Video decoding

h265

gst-launch-1.0 udpsrc port=5600 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H265' ! rtph265depay ! h265parse ! mppvideodec ! xvimagesink sync=false

h264

gst-launch-1.0 udpsrc port=5600 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264' ! rtph264depay ! h264parse ! mppvideodec ! xvimagesink sync=false

###GS IS READY FOR USE###

DVR (Digital Video Recorder)

Create a file gst_start with the following content and assign the rights to execute chmod +x gst_start.

#!/bin/bash
current_date=$(date +'%Y%d%m_%H%M%S')
cd ~/Videos

if [[ $1 == "save" ]]
then
	gst-launch-1.0 -e udpsrc port=5600 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H265' ! rtph265depay ! h265parse ! tee name=t ! queue ! mppvideodec ! xvimagesink sync=false t. ! queue ! matroskamux ! filesink location=record_${current_date}.mkv
else
	gst-launch-1.0 udpsrc port=5600 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H265' ! rtph265depay ! h265parse ! mppvideodec ! xvimagesink sync=false
fi

When running with the save option, the video will be saved to the /home/Video folder/

Start, stop, restart service

systemctl status wifibroadcast@gs
systemctl stop wifibroadcast@gs
systemctl start wifibroadcast@gs

Get last logs from service

journalctl -u wifibroadcast@gs -f
journalctl -xu wifibroadcast@gs -n 100

Useful commands

# Checking the operation of the wfb-ng
/usr/bin/wfb_rx -p 0 -c 127.0.0.1 -u 5600 -K /etc/gs.key -i 7669206 $WLAN

# Find out the name of the wifi adapter
nmcli
ifconfig
iw

# Displays the possible parameters of the wifi adapter
iw list

# Displays the current settings of the Wifi adapter
iw dev

# Outputs the current frequency and power parameters
sudo iw reg get

# Set a new region
sudo iw reg set RU
https://hackware.ru/?p=17978 - Solves the problem of channel selection

# Viewing running wfb-ng processes
ps -aux | grep wfb

# Set the power
sudo ip link set $WLAN down
sudo iw dev $WLAN set txpower fixed 30mBm
sudo ip link set $WLAN up

# View available plugins for decoding
gst-inspect-1.0 | grep 265

# Shows a list of downloaded drivers/modules
lsmod

# Displays a list of connected USB devices and related drivers
usb-devices