firmware/general/package/wifibroadcast/files/wifibroadcast

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#!/bin/sh
chip=$(ipcinfo -c)
vendor=$(ipcinfo -v)
keydir=/etc
if [ -e /etc/datalink.conf ]; then
. /etc/datalink.conf
fi
if [ -e /etc/wfb.conf ]; then
. /etc/wfb.conf
fi
set_mcs() {
if [ "$vendor" = "ingenic" ]; then
mcs=$(ls -l /lib/firmware | grep "htc_9271" | awk { 'print $11' } | cut -d "." -f3)
else
mcs=$(ls -l /lib/firmware/ath9k_htc | grep "htc_9271-1.4.0.fw" | cut -d "." -f6)
fi
if [ -z "$mcs" ]; then
setmcs "$mcs_index"
fi
if [ "$mcs_index" -eq 1 ] || [ "$mcs_index" -eq 3 ]; then
if [ ! "$mcs_index" -eq "$mcs" ]; then
setmcs "$mcs_index"
sleep 3
fi
fi
}
detect_wifi_card() {
devices=$(lsusb | cut -d ' ' -f6 | sort | uniq)
for card in $devices; do
case "$card" in
"0bda:8812" | "0bda:881a" | "0b05:17d2" | "2357:0101" | "2604:0012")
driver="realtek"
modprobe 88XXau rtw_tx_pwr_idx_override="$driver_txpower_override"
;;
"0bda:a81a")
driver="realtek_8812eu"
modprobe 8812eu rtw_regd_src=1 rtw_tx_pwr_by_rate=0 rtw_tx_pwr_lmt_enable=0
;;
"0cf3:9271" | "040d:3801")
driver="atheros"
if ! [ "$unit" = "gs" ]; then
set_mcs
fi
modprobe mac80211
modprobe ath9k_hw txpower="$txpower"
modprobe ath9k_htc
;;
esac
done
if [ -z "$driver" ]; then
echo "Wireless module not detected, check the usb connection."
exit 1
else
echo "Detected: $driver"
fi
local n=0
while ! ifconfig -a | grep -q "$wlan"; do
if [ "$n" -ge 5 ]; then
echo "No interface for $wlan, check the usb connection."
exit 1
fi
sleep 0.5
n=$((n + 1))
done
}
load_modules() {
modprobe cfg80211
detect_wifi_card
}
load_interface() {
if [ "$driver" = "realtek" ]; then
ifconfig "$wlan" up
iwconfig "$wlan" mode monitor
elif [ "$driver" = "realtek_8812eu" ]; then
ifconfig "$wlan" up
iwconfig "$wlan" mode monitor
iw dev "$wlan" set txpower fixed $((driver_txpower_override * 50))
elif [ "$driver" = "atheros" ]; then
iwconfig "$wlan" mode monitor
ifconfig "$wlan" up
fi
iw reg set "$region"
if [ -n "$frequency" ]; then
iwconfig "$wlan" freq "$frequency"
else
iwconfig "$wlan" channel "$channel"
fi
# Set txpower
#iw dev $wlan set txpower fixed $(($txpower * 100))
}
start_drone_wfb() {
wfb_tx -p "$stream" -u "$udp_port" -R "$rcv_buf" -K "$keydir/$unit.key" -B "$bandwidth" \
-M "$mcs_index" -S "$stbc" -L "$ldpc" -G "$guard_interval" -k "$fec_k" -n "$fec_n" \
-T "$pool_timeout" -i "$link_id" -f "$frame_type" "$wlan" > /dev/null &
}
start_gs_wfb() {
wfb_rx -c "$udp_addr" -u "$udp_port" -p "$stream" -K "$keydir/$unit.key" -i "$link_id" "$wlan" > /dev/null &
}
case "$1" in
start)
if [ "$daemon" -eq 1 ]; then
echo "Loading modules and wifi card driver..."
load_modules
load_interface
if ! cat "$keydir/$unit.key" > /dev/null 2>&1; then
echo "Generating drone & ground station keys..."
cd $keydir && wfb_keygen
fi
echo "Starting Wifibroadcast service..."
start_${unit}_wfb
if [ "$telemetry" = "true" ]; then
if [ "$chip" = "gk7205v200" ]; then
# UART2_RX mux
devmem 0x120c0010 32 0x1e04
elif [ "$chip" = "ssc33x" ]; then
# UART2
devmem 0x1F207890 16 0x8
fi
telemetry start
fi
else
echo "Wifibroadcast service disabled in wfb.conf."
fi
;;
stop)
echo "Stopping Wifibroadcast services..."
killall -q wfb_tx
killall -q wfb_rx
killall -q telemetry_rx
killall -q telemetry_tx
killall -q mavlink-routerd
killall -q mavfwd
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
;;
esac