树莓派使用4G模块上网

liujincai

一、4G Luci配置
1、 新建一个wwan接口；
2、 上网方式为dhcp自动获取；
3、 物理设置选择wwan0；
4、 防火墙选择wan
二、重连脚本redial4g

1. LogFile=/root/4g_Log.log
   
2. mdate=`date +%R-%d-%m-%Y`
   
3. 
   
4. if [ -e /var/run/udhcpc-wwan0.pid ]; then
   
5.     echo 4G pid is ok!   
   
6.     #echo $mdate 4G pid is ok! >> $LogFile
   
7.     #exit 0
   
8. else
   
9.     echo 4G pid is failed!
   
10.     echo $mdate 4G pid is failed! >> $LogFile
    
11.     #/etc/myLte/dial4g
    
12.     #reboot
    
13.     #exit 0
    
14. fi
    
15. 
    
16. if ping -c3 www.baidu.com > /dev/null 2>&1
    
17. then
    
18.     echo ping baidu is ok!
    
19.     #echo $mdate  ping baidu is ok! >> $LogFile
    
20.     echo 0 > /tmp/4g_tmp.txt
    
21.     exit 0
    
22. else
    
23.     echo ping baidu is failed!
    
24.     echo $mdate ping baidu is failed! >> $LogFile
    
25.     /etc/myLte/dial4g  #must place here
    
26.     #read pvar < /tmp/4g_temp.txt
    
27.     #if [ -z "$pvar" ] ; then
    
28.     #    pvar=0
    
29.     #fi   
    
30.     if [ ! -f "/tmp/4g_tmp.txt" ] ; then
    
31.         pvar=0
    
32.         echo file not exist
    
33.     else
    
34.         read pvar < /tmp/4g_tmp.txt
    
35.         echo file exist
    
36.     fi
    
37.     pvar=`expr $pvar + 1`
    
38.     echo $pvar > /tmp/4g_tmp.txt
    
39.     if [ $pvar -ge 5 ] ; then
    
40.         echo failed 5 times!
    
41.         echo $mdate failed 5 times! >> $LogFile
    
42.         reboot   
    
43.     fi
    
44.      
    
45. fi
    
46. exit 0

复制代码

三、crontab
*/2 * * * * /etc/myLte/redial4g
重连时间不要设太短，太短可能还没拨号结束就又进行重播，会重复了。

四、拨号脚本dial4g

1. PORT=/dev/ttyUSB0
   
2. MODE="AT+CFUN=1" gcom -d $PORT -s /etc/gcom/setmode.gcom
   
3. sleep 3
   
4. MODE="AT+COPS=0" gcom -d $PORT -s /etc/gcom/setmode.gcom
   
5. sleep 3
   
6. MODE="AT+CEREG=1" gcom -d $PORT -s /etc/gcom/setmode.gcom
   
7. sleep 3
   
8. MODE="AT+CGDCONT=1,'IP'" gcom -d $PORT -s /etc/gcom/setmode.gcom
   
9. sleep 3
   
10. MODE="AT+CGACT=1,1" gcom -d $PORT -s /etc/gcom/setmode.gcom
    
11. sleep 3
    
12. MODE="AT+ZGACT=1,1" gcom -d $PORT -s /etc/gcom/setmode.gcom
    
13. sleep 3
    
14. ifup wwan &
    
15. exit 0

复制代码

五、开机启动

1. # Put your custom commands here that should be executed once
   
2. # the system init finished. By default this file does nothing.
   
3. 
   
4. /etc/myLte/dial4g
   
5. 
   
6. exit 0

复制代码

转自互联网，作者念愧聚