無線網路設定

• WPA 密碼設定：
  • 設定檔：/etc/network/interfaces

    # allow-hotplug wlan0
    iface wlan0 inet manual
    wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
    iface default inet static
        address 10.1.2.20
        netmask 255.255.255.0
        network 10.1.2.0
        gateway 10.1.2.1
    

  • 使用 DHCP 設定 IP：

    # allow-hotplug wlan0
    iface wlan0 inet manual
    wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
    iface default inet dhcp
    

  • 手動設定 IP 設定檔：/etc/wpa_supplicant/wpa_supplicant.conf

    ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
    update_config=1
    
    network={
        ssid="Your SSID Here"
        proto=RSN
        key_mgmt=WPA-PSK
        pairwise=CCMP TKIP
        group=CCMP TKIP
        psk="YourPresharedKeyHere"
    }
    

  • 重新啟動無線網路。

    # sudo ifdown wlan0
    # sudo ifup wlan0
    ioctl[SIOCSIWAP]: Operation not permitted
    ioctl[SIOCSIWENCODEEXT]: Invalid argument
    ioctl[SIOCSIWENCODEEXT]: Invalid argument
    

  • 觀看無線網路狀態：

    # iwconfig
    lo        no wireless extensions.
    
    eth1      no wireless extensions.
    
    wlan0     IEEE 802.11bg  ESSID:"Your SSID Here"  Nickname:"<WIFI@REALTEK>"
              Mode:Managed  Frequency:2.442 GHz  Access Point: NN:NN:NN:NN:NN:NN   
              Bit Rate:54 Mb/s   Sensitivity:0/0  
              Retry:off   RTS thr:off   Fragment thr:off
              Power Management:off
              Link Quality=100/100  Signal level=95/100  Noise level=0/100
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:0   Missed beacon:0
    
    eth0      no wireless extensions.
    

套件

• webcam：
  • ​http://gsyan888.blogspot.tw/2013/04/raspberry-pi-webcam-server.html
  • ​http://pingbin.com/2012/12/raspberry-pi-web-cam-server-motion/
  • 設定檔：

         #lsusb   看是否抓到 webcam
    
         #sudo vim.tiny /etc/motion/motion  設定
         daemon : 設定為 on
         webcam_localhost : 設定為 off 
    
         #sudo vim.tiny /etc/default/motion
         start_motion_daemon=yes
    

  • 啟動：

         #sudo service motion start
    

  • 觀看服務狀態：

         #netstat -na | grep 8081
         tcp        0      0 0.0.0.0:8081            0.0.0.0:*               LISTEN
    

  • 於 browser 中輸入「​http://192.168.2.1:8081」即可觀看

作品

• ​http://www.theregister.co.uk/2013/02/13/pi_carbot/ 自走車

Reference

• ​http://kerneldriver.wordpress.com/2012/10/21/configuring-wpa2-using-wpa_supplicant-on-the-raspberry-pi/