内核配置(kernel configuration)

提示：内核配置对3G模块的支持在《MY-I.MX6 V2.5 Linux编译手册》中已经完成。
tips：3G module supported by kernel configuration was described in《MY-I.MX6 V2.5 Linux compilation manual》。

编译ppp(compife ppp)

准备源码(prepare source code)

下载源码包(download source code package)

从网盘下载ppp-2.4.4.tar.gz，路径为MY-I.MX6 V2.5/04_模块/3G_MU609。
download ppp-2.4.4.tar.gz from network disk，path is MY-I.MX6 V2.5/04_ module/3G_MU609。

创建并进入3G工作目录(create and enter 3G working directory)

$ mkdir ~/MY-I.MX6/3G/
$ cd ~/MY-I.MX6/3G/

解压源码包(decompress source code package)

• 将ppp源码包复制到工作目录
  

copy ppp source code packge to working directory

• 解压源码包
  

decompress source code package
$ tar zxf ppp-2.4.4.tar.gz

编译(compilation)

• 进入源码目录
  

enter source code directory
$ cd ppp-2.4.4/

生成配置文件(created configruation file)

$ ./configure

编译源码(compife source code)

• 使MY-I.MX6配置文件生效
  

make MY-I.MX6 configuration file valid
$ source ~/MY-I.MX6/my-imx6_build.conf

• 编译
  

compilation
$ make CC=${CROSS_COMPILE}gcc

目标文件(target file)

编译完成后即可得到pppd和chat，这两个文件即我们的目标文件。
pppd and chat can be gained after compilation is finished，which are our target files。

   pppd 路径: pppd/pppd

   pppd path: pppd/pppd

   chat路径: chat/chat

   chat path: chat/chat

打包文件系统（package file system）

准备应用程序(prepare application)

• 将目标文件复制到文件系统中的usr/sbin目录里
  

copy target file to usr/sbin directory in file system
$ cp pppd/pppd ~/MY-I.MX6/rootfs/usr/sbin
$ cp chat/chat ~/MY-I.MX6/rootfs/usr/sbin

• 进入文件系统目录
  

enter file system directory
$ cd ~/MY-I.MX6/rootfs

• 创建拨号脚本目录
  

create dialing script directory
$ mkdir etc/ppp/peers/ –p

创建脚本(create script)

wcdma

在etc/ppp/peers/下创文件wcdma并写入以下内容
create file of wcdma and write in below contents under etc/ppp/peers/

nodetach
lock
/dev/ttyUSB0
115200
user "card"
password "card"
crtscts
show-password
usepeerdns
noauth
noipdefault
novj
novjccomp
noccp
defaultroute
ipcp-accept-local
ipcp-accept-remote
connect '/usr/sbin/chat -s -v -f /etc/ppp/peers/wcdma-chat-connect'
disconnect '/usr/sbin/chat -s -v -f /etc/ppp/peers/wcdma-chat-disconnect'

wcdma-chat-connect

在etc/ppp/peers/下创文件wcdma-chat-connect并写入以下内容
create file of wcdma-chat-connect and write in below contents under etc/ppp/peers/

ABORT 'NO CARRIER'
ABORT 'ERROR'
ABORT 'NO DIALTONE'
ABORT 'BUSY'
ABORT 'NO ANSWER'
\rAT
OK \rATZ
OK \rAT+CGDCONT=1,"IP","3gnet",,0,0
OK-AT-OK ATDT*99#
CONNECT \d\c

wcdma-chat-disconnect

在etc/ppp/peers/下创文件wcdma-chat-disconnect并写入以下内容
create file of wcdma-chat-disconnect and write in below contents etc/ppp/peers/

ABORT "ERROR"
ABORT "NO DIALTONE"
SAY "\nSending break to the modem\n"
"\K"
"+++ATH"
SAY "\nGoodbay\n"

打包文件系统(package file system)

$ tar cjf ../rootfs.tar.bz2 *

3G模块测试(3G module test)

启动开发板，执行下面的命令：
start up development board,execute below command：
$ pppd call wcdma &