wfb-ng for OpenWrt

Package name is wfb-ng, There are five options in OpenWRT's config:

wfb-rx: wfb_rx binary
wfb-tx: wfb_tx binary
wfb-keygen: wfb_keygen binary
wfb-key: Default key used by OpenIPC and Android FPVue, linked to /etc/gs.key
wfb-gs: OpenWRT wfb groundstation, Include necessary bins, scripts and configs. The main function is set wireless network card to Monitor mode, receive data from WNIC and sending to decode & dispaly device.

Fully compatible with openipc fpv.
Using the wireless card integrated by router, No need to use an external USB wireless network card.
2.4G and 5G band supported when using a dual-band router.
Support sending video stream and Mavlink data to devices via ethernet cable, wifi, RNDIS, etc.
Auto switch sending destination between Android phone(USB tethering) and PC(ethernet or wifi) using unicast mode. Sending data to the phone when USB tethering turned on, Otherwise sending data to the PC(static IP set in config)
Sending data to Android(RNDIS) and SBC(ethernet) at the same time using multicast mode. QGroundControl does not support multicast in windows?
Can place the router high or far away to get a better signal, such as on the roof. The working length of ethernet cable is much longer than USB cable.

Set channel to 36
1. uci set wfb-gs.config.channel='36'
2. uci commit
3. reload_config
Set stream destination IP to 192.168.1.100 and set mode to unicast
1. uci set wfb-gs.config.ip_pc='192.168.1.100'
2. uci set wfb-gs.config.mode='unicast'
3. uci commit
4. reload_config
Change settings by edit config file
1. edit /etc/config/wfb-gs and save
2. reload_config

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