【樹莓派】樹莓派使用4G模組上網

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想瞭解一下樹莓派通過4G網路模組通訊如何?，看到這篇文章（http://www.lxway.com/95811506.htm），準備接下來有機會實踐一下，先留存學習；

一、4G Luci配置

1、 建立一個wwan介面；

2、 上網方式為dhcp自動擷取；

3、 物理設定選擇wwan0；

4、 防火牆選擇wan

二、重連指令碼redial4g

LogFile=/root/4g_Log.logmdate=`date +%R-%d-%m-%Y`if [ -e /var/run/udhcpc-wwan0.pid ]; then    echo 4G pid is ok!        #echo $mdate 4G pid is ok! >> $LogFile    #exit 0else    echo 4G pid is failed!    echo $mdate 4G pid is failed! >> $LogFile    #/etc/myLte/dial4g    #reboot    #exit 0fiif ping -c3 www.baidu.com > /dev/null 2>&1then    echo ping baidu is ok!    #echo $mdate  ping baidu is ok! >> $LogFile    echo 0 > /tmp/4g_tmp.txt    exit 0else    echo ping baidu is failed!    echo $mdate ping baidu is failed! >> $LogFile    /etc/myLte/dial4g  #must place here    #read pvar < /tmp/4g_temp.txt    #if [ -z "$pvar" ] ; then    #    pvar=0    #fi        if [ ! -f "/tmp/4g_tmp.txt" ] ; then        pvar=0        echo file not exist    else        read pvar < /tmp/4g_tmp.txt        echo file exist    fi    pvar=`expr $pvar + 1`    echo $pvar > /tmp/4g_tmp.txt    if [ $pvar -ge 5 ] ; then        echo failed 5 times!        echo $mdate failed 5 times! >> $LogFile        reboot        fi    fiexit 0

　　

三、crontab

*/2 * * * * /etc/myLte/redial4g

重連時間不要設太短，太短可能還沒撥號結束就又進行重播，會重複了。

四、撥號指令碼dial4g

PORT=/dev/ttyUSB0MODE="AT+CFUN=1" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3MODE="AT+COPS=0" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3MODE="AT+CEREG=1" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3MODE="AT+CGDCONT=1,‘IP‘" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3MODE="AT+CGACT=1,1" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3MODE="AT+ZGACT=1,1" gcom -d $PORT -s /etc/gcom/setmode.gcomsleep 3ifup wwan &exit 0

　　

五、開機啟動

# Put your custom commands here that should be executed once# the system init finished. By default this file does nothing./etc/myLte/dial4gexit 0

　　

 

【樹莓派】樹莓派使用4G模組上網