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0071_WiFi_AP.md

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WiFi AP

由于OTA测试需要用到一个指定IP进行测试，于是暂时使用树莓派WiFI做一个AP，再加一个Apache2作为web服务端。

需要注意的是如果没有做数据转发情况下，Android手机会出现连接AP没有网络，然后继续使用4G流量，导致用浏览器无法访问到WiFi的IP，所以测试的时候要关掉手机4G流量。

参考文档

steps

  • sudo apt install dnsmasq hostapd
  • sudo systemctl stop dnsmasq
  • sudo systemctl stop hostapd
  • sudo vim /etc/dhcpcd.conf 
    [...省略]
interface wlan0
    static ip_address=192.168.4.1/24
    nohook wpa_supplicant
  • sudo service dhcpcd restart
  • sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig
  • sudo vim /etc/dnsmasq.conf 
    interface=wlan0      # Use the require wireless interface - usually wlan0
dhcp-range=192.168.4.2,192.168.4.20,255.255.255.0,24h
  • sudo systemctl reload dnsmasq
  • sudo vim /etc/hostapd/hostapd.conf 
    interface=wlan0
driver=nl80211
ssid=NameOfNetwork
hw_mode=g
channel=7
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=zengjf123456
wpa_key_mgmt=WPA-PSK
# wpa_pairwise=TKIP
rsn_pairwise=CCMP
  • sudo vim /etc/default/hostapd 
    DAEMON_CONF="/etc/hostapd/hostapd.conf"
  • sudo systemctl unmask hostapd
  • sudo systemctl enable hostapd
  • sudo systemctl start hostapd
  • reboot
  • sudo systemctl status hostapd
  • sudo systemctl status dnsmasq
  • netstat -aon | grep "80"

Disable AP

  • sudo systemctl disable hostapd
  • sudo systemctl disable dnsmasq
  • sudo vim /etc/dhcpcd.conf 
    [...省略]
# interface wlan0
#     static ip_address=192.168.4.1/24
#     nohook wpa_supplicant
  • reboot