Android2.1下调试3G模块（三）

现在开始介绍如何实现ppp拨号上网。在/system/etc下创建ppp目录，并在ppp目录下创建以下文件：

 

1.init.gprs-pppd

#!/system/bin/sh
# An unforunate wrapper script
PPPD_PID=
/system/bin/setprop "net.gprs.ppp-exit" ""
/system/bin/log -t pppd "Starting pppd"
/system/bin/pppd call gprs $*
PPPD_EXIT=$?
PPPD_PID=$!
/system/bin/log -t pppd "pppd exited with $PPPD_EXIT"
/system/bin/setprop "net.gprs.ppp-exit" "$PPPD_EXIT"
exit $PPPD_EXIT

2.gprs-connect-chat

ABORT 'BUSY'
ABORT 'NO CARRIER'
ABORT 'ERROR'
ABORT '+CME ERROR: 100'
"" AT
OK AT+CGDCONT=1,"IP","CMNET"
OK AT+CGEQREQ=1,2,128,384,0,0,0,0,"0E0","0E0",,0,0
OK AT
OK AT
OK ATS0=0
OK AT
OK AT
OK ATDT*98*1#
CONNECT

3.gprs-disconnect-chat

ABORT OK
ABORT BUSY
ABORT DELAYED
ABORT "NO ANSWER"
ABORT "NO CARRIER"
ABORT "NO DIALTONE"
ABORT VOICE
ABORT ERROR
ABORT RINGING
TIMEOUT 12
"" \\k\\k\\k\\d+++ATH
"NO CARRIER-AT-OK" ""

4.ip-up

#!/system/bin/sh
/system/bin/setprop "net.interfaces.defaultroute" "gprs"
/system/bin/setprop "net.gprs.dns1" "$DNS1"
/system/bin/setprop "net.gprs.dns2" "$DNS2"
/system/bin/setprop "net.gprs.local-ip" "$IPLOCAL"
/system/bin/setprop "net.gprs.remote-ip" "$IPREMOTE"
exit 0

5.ip-down

#!/system/bin/sh
case $1 in
    ppp1)
  echo 0 > /proc/sys/net/ipv4/ip_forward;
  ;;
esac
rm /etc/ppp/ppp*.pid
# Use interface name if linkname is not available
NAME=${LINKNAME:-"$1"}
#/system/bin/setprop "net.dns1" ""
#/system/bin/setprop "net.dns2" ""
/system/bin/setprop "net.$NAME.local-ip" ""
/system/bin/setprop "net.$NAME.remote-ip" ""

6.peers/gprs

# This is pppd script, used Huawei EM770W3G Module
# Usage: root>pppd call gprs
/dev/ttyUSB0
115200
crtscts
modem
debug
nodetach
usepeerdns
noipdefault
defaultroute
user "cmnet"
0.0.0.0:0.0.0.0
connect '/system/bin/chat -s -v -f /etc/ppp/gprs-connect-chat'
#disconnect '/bin/chat -v -f /etc/ppp/gprs-disconnect-chat'

 

文件创建好后只要在Android启动后进入"Settings(设置)"->"Wireless controls(无线网络)"->"Mobile networks(移动网络)"->"Access Points Name(接入点)",按Menu键弹出界面选择"New APN(新接入点)"，一般情况下只要填写"Name(名称)"和"APN"两项即可，"MCC"和"MNC"会随着运行商网络注册成功后自动生成，最后保存。现在就可以通过gprs上网了。