arm开发板上gprs模块拨号上网

有了操作系统，开发板和宿主机就基本没有区别了，:-)。所以我直接就把在fedora下测试通过的三个脚本稍加修改搬到了开发板上，毫无疑问的一次拨通，:-)，有了操作系统，就是爽呀。微处理器是at91rm9200，gprs模块是mc39i。

当然如果内核不支持ppp拨号,则要重新编译内核,添加对ppp的支持,

Network device support--> 
 <*> PPP (point-to-point protocol) support               
 [*] PPP multilink support（EXPERIMENTAL)                
 <*> PPP support for async serial ports                  
 <*> PPP support for sync tty ports                     
 <*> PPP Deflate compression                             
 <*> PPP BSD-Compress compression  
然后重新烧写新生成的内核映象。

再把我的脚本粘帖一遍吧。这样就不怕丢了，:-)。

 

/mnt/nfs/myppp/ppp-on

#!/bin/sh
#
# Script to initiate a ppp connection. This is the first part of the
# pair of scripts. This is not a secure pair of scripts as the codes
# are visible with the 'ps' command.  However, it is simple.
#
# These are the parameters. Change as needed.
TELEPHONE=*99***1# # The telephone number for the connection
ACCOUNT=  # The account name for logon (as in 'George Burns')
PASSWORD=  # The password for this account (and 'Gracie Allen')
LOCAL_IP=0.0.0.0 # Local IP address if known. Dynamic = 0.0.0.0
REMOTE_IP=0.0.0.0 # Remote IP address if desired. Normally 0.0.0.0
NETMASK=255.255.255.0 # The proper netmask if needed
#
# Export them so that they will be available at 'ppp-on-dialer' time.
export TELEPHONE ACCOUNT PASSWORD
#
# This is the location of the script which dials the phone and logs
# in.  Please use the absolute file name as the $PATH variable is not
# used on the connect option.  (To do so on a 'root' account would be
# a security hole so don't ask.)
#
DIALER_SCRIPT=/mnt/nfs/myppp/ppp-on-dialer
#
# Initiate the connection
#
# I put most of the common options on this command. Please, don't
# forget the 'lock' option or some programs such as mgetty will not
# work. The asyncmap and escape will permit the PPP link to work with
# a telnet or rlogin connection. You are welcome to make any changes
# as desired. Don't use the 'defaultroute' option if you currently
# have a default route to an ethernet gateway.
#
exec pppd debug lock modem /dev/ttyS2 115200 \
 asyncmap 20A0000 escape FF kdebug 0 $LOCAL_IP:$REMOTE_IP \
 noipdefault netmask $NETMASK defaultroute connect $DIALER_SCRIPT

 

/mnt/nfs/myppp/ppp-on-dialer

#!/bin/sh
#
# This is part 2 of the ppp-on script. It will perform the connection
# protocol for the desired connection.
#
exec chat -v      \
 TIMEOUT  3    \
 ABORT  '\nBUSY\r'   \
 ABORT  '\nNO ANSWER\r'   \
 ABORT  '\nRINGING\r\n\r\nRINGING\r' \
 ''  \rAT    \
 'OK-+++\c-OK' ATH0    \
 TIMEOUT  30    \
 OK  AT+IPR=115200   \
 OK  AT+CGDCONT=1,"IP","CMNET"   \
 OK  AT+CGACT=1,1   \
 OK  ATDT*99***1#   \
 CONNECT  ''    \
# ogin:--ogin: $ACCOUNT   \
# assword: $PASSWORD

 

/mnt/nfs/myppp/ppp-off

#!/bin/sh
#################################################
#
# Determine the device to be terminated.
#
if [ "$1" = "" ]; then
 DEVICE=ppp0
else
 DEVICE=$1
fi

################################################
#
# If the ppp0 pid file is present then the program is running. Stop it.
if [ -r /var/run/$DEVICE.pid ]; then
        kill -INT `cat /var/run/$DEVICE.pid`
#
# If the kill did not work then there is no process running for this
# pid. It may also mean that the lock file will be left. You may wish
# to delete the lock file at the same time.
        if [ ! "$?" = "0" ]; then
                rm -f /var/run/$DEVICE.pid
                echo "ERROR: Removed stale pid file"
                exit 1
        fi
#
# Success. Let pppd clean up its own junk.
        echo "PPP link to $DEVICE terminated."
        exit 0
fi
#
# The ppp process is not running for ppp0
echo "ERROR: PPP link is not active on $DEVICE"
exit 1

 

如果ping不通的话，配置一下network就ok了。:-)

/etc/sysconfig/network

NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=localhost.localdomain
GATEWAY=
GATWAYDEV=

关键是后边这两个要空着，这样就会使用ppp分配的网关了，也就可以ping通了。

 

 

文件:	myppp.rar
大小:	2KB
下载:	下载