*************加载bcmdhd.ko，运行  insmod-wifi.sh**************************************
#!/bin/bash
insmod bcmdhd.ko firmware_path=/lib/firmware/fw_40181a2.bin nvram_path=/lib/firmware/nvram.txt
sleep 2
ifconfig wlan0 up

**************sta模式连接wifi(加载完驱动并启动wlan0节点之后)******************************************************************
wpa_supplicant -Dnl80211 -iwlan0 -c/etc/wpa_supplicant.conf -B > /dev/null 2>&1
udhcpc -i wlan0&

*****单独使用ap模式，运行 ifup_ap_wifi.sh****************************************************
#/bin/sh
insmod bcmdhd.ko firmware_path=/lib/firmware/fw_40181a2.bin nvram_path=/lib/firmware/nvram.txt
sleep 2
#  ap网卡映射
echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -s 192.168.5.0/24 -j ACCEPT   	         ##AP的网段ip
iptables -A FORWARD -d 192.168.2.0/24 -j ACCEPT            ##根据实际情况填写eth0的ip网段

ifconfig wlan0 up 192.168.5.1
udhcpd /opt/udhcpd-wlan0.conf &

hostapd -B /opt/hostapd.conf &

*****同时启动sta和AP  运行  start_ap_sta.sh  或 ap_run.sh********************************
#!/bin/sh

insmod bcmdhd.ko firmware_path=/opt/fw_40181a2.bin nvram_path=/opt/nvram.txt
sleep 1
ifconfig wlan0 up

sleep 2

#启动AP
dhd_helper iface wlan0 ssid "A6G2C-WIFI-AP" bgnmode bgn chan 11 amode wpawpa2psk emode tkipaes key "12345678"
echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -s 192.168.5.0/24 -j ACCEPT   	         ##AP的网段ip
iptables -A FORWARD -d 192.168.2.0/24 -j ACCEPT            ##根据实际情况填写eth0的ip网段
ifconfig wl0.1 192.168.5.1 up
udhcpd /opt/udhcpd-wl0.1.conf

sleep 1

#连接热点
wpa_supplicant -Dnl80211 -iwlan0 -c/etc/wpa_supplicant.conf -B > /dev/null 2>&1
udhcpc -i wlan0 &

*****************************************************************************************************************

*wl命令使用
查看网卡状态
wl -i wlan0 status
打开wifi
wl up -i wlan0
关闭wifi
wl down -i wlan0
查看ap连接设备，会显示连接设备的MAC
wl autho_sta_list -i wlan0

文件系统编译
sudo mkfs.ubifs -r rootfs-mx6g2c-wifi  -m 2KiB -e 124KiB -c 540 -o rootfs.ubifs.img



