手把手教你通過(guò)串口調(diào)試模塊連接wifi

xiaofenglib 2013-09-16

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首先你要下載兩個(gè)軟件：

sudo apt-get install vim dialog

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然后編寫(xiě)一個(gè)腳本：

sudo vim wifi.sh

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腳本內(nèi)容如下：

#!/bin/sh
# From wlanconfig:
# $FreeBSD: src/usr.sbin/bsdinstall/scripts/wlanconfig,v 1.3.2.1 $
#
# Author: gihnius@gmail.com
#
# default wlan
iface=wlan0
# driver device
dev=$(sysctl -n net.wlan.0.%parent)
if ifconfig $dev >/dev/null 2>&1 ; then
phy_iface=$dev
else
phy_iface=ath0
fi
# use system wpa_supplicant.conf
wpa_supplicant_conf=/etc/wpa_supplicant.conf
# network id -1 non exist
current_id=-1
# use default wpa_supplicant.conf
use_conf=1
usage () {
cat <<EOF
Usage:
$0 default
$0 -l/list use saved configured network, do not scan. So make sure the AP exist.
$0 stop stop wifi connection
$0 reconfig re-configure device
$0 newconf create new /etc/wpa_supplicant.conf
$0 addif if not set rc.conf wlan configure; means does not exist $iface currently.
$0 ns 127.0.0.1 set this nameserver
$0 help/-h/--help
EOF
exit 0
}
check_network () {
local _ssid=$1
local _id=`wpa_cli -i $iface list_networks | awk '$2~/^'"$_ssid"'$/{print $1}' | head -1`
if [ -z $_id ] ; then
echo -1
else
echo $_id
fi
}
update_psk () {
local _ssid=$1
local _psk=$2
if [ ${#_psk} -lt 8 ] ; then
echo psk length max be 8..63
exit 1
fi
local _id=`check_network "$_ssid"`
local _pass=`wpa_passphrase $_ssid $_psk | sed -n 's/[^#]psk=$.*$/\1/p'`
wpa_cli -i $iface set_network $_id psk $_pass
}
stop_wifi () {
ifconfig $iface down delete
exit 0
}
cfg_dev () {
ifconfig $iface create wlandev $phy_iface
ifconfig $iface up
/etc/rc.d/wpa_supplicant start $iface
}
recfg_dev () {
ifconfig $iface down delete
ifconfig $iface destroy
ifconfig $phy_iface down
ifconfig $phy_iface up
ifconfig $iface create wlandev $phy_iface
ifconfig $iface up
}
wpa_lookup () {
# Try to reach wpa_supplicant. If it isn't running and we can modify the
# existing system, start it. Otherwise, fail.
# Here use the existing system script /etc/rc.d/wpa_supplicant
(wpa_cli -i $iface ping >/dev/null 2>/dev/null || /etc/rc.d/wpa_supplicant start $iface) || \
(dialog --backtitle "FreeBSD Wifi" --title "Error" --msgbox \
"Could not start wpa_supplicant!" 0 0; exit 1) || exit 1
# See if we succeeded
wpa_cli -i $iface ping >/dev/null 2>/dev/null
if [ $? -ne 0 ] ; then
dialog --backtitle "FreeBSD Wifi" --title "Error" --msgbox \
"Wireless cannot be configured without making changes to the local system!" \ 0 0
exit 1
fi
}
final () {
local nw=$1
local nid=$2
wpa_cli -i $iface disconnect
ifconfig $iface ssid $nw
wpa_cli -i $iface select_network $nid
wpa_cli -i $iface enable_network $nid
wpa_cli -i $iface reconnect
wpa_cli -i $iface save_config
dhclient -b $iface
exit 0
}
case $1 in
stop)
stop_wifi ;;
-l|list)
wpa_lookup
wpa_cli -i $iface list
echo "Please enter the network id:"
read current_id
if [ $current_id -lt 0 -o $current_id -ge 64 ] ; then
# too small or too big try again
wpa_cli -i $iface list
echo "Please enter the network id:"
read current_id
fi
NETWORK=`wpa_cli -i $iface list | awk '{if($1=='"$current_id"'){print $2}}'`
final $NETWORK $current_id
;;
reconfig)
recfg_dev ;;
newconf)
use_conf=0 ;;
addif)
cfg_dev ;;
ns)
if [ ! -z $2 ] ; then
if ! grep -q $2 /etc/resolv.conf ; then
echo $2 >> /etc/resolv.conf
fi
fi
;;
-h|--help|help)
usage ;;
esac
use_wificfg () {
if [ -f $wpa_supplicant_conf ] ; then
if [ $use_conf = 1 ] ; then
# using wificfg
return 0
else
echo "Backup $wpa_supplicant_conf ..."
mv $wpa_supplicant_conf ${wpa_supplicant_conf}.old
return 1
fi
else
# can use wificfg
return 1
fi
}
if use_wificfg ; then
echo "Using $wpa_supplicant_conf ."
else
echo -n > $wpa_supplicant_conf
chmod 0600 $wpa_supplicant_conf
echo "ctrl_interface=/var/run/wpa_supplicant" >> $wpa_supplicant_conf
echo "eapol_version=2" >> $wpa_supplicant_conf
echo "fast_reauth=1" >> $wpa_supplicant_conf
echo "update_config=1" >> $wpa_supplicant_conf
echo >> $wpa_supplicant_conf
fi
## progress ...
wpa_lookup
wpa_cli -i $iface ap_scan 1
wpa_cli -i $iface scan
dialog --backtitle "FreeBSD Wifi" --title "Scanning" --ok-label "Skip" \
--pause "Waiting 5 seconds to scan for wireless networks..." \
9 40 5 || exit 1
SCAN_RESULTS=`wpa_cli -i $iface scan_results`
NETWORKS=`echo "$SCAN_RESULTS" | awk -F '\t' \
'/..:..:..:..:..:../ {if (length($5) > 0) printf("\"%s\"\t%s\n", $5, $4);}' |
sort | uniq`
if [ -z "$NETWORKS" ] ; then
dialog --backtitle "FreeBSD Wifi" --title "Error" \
--yesno "No wireless networks were found. Rescan?" 0 0 && \
exec $0 $@
exit 1
fi
exec 3>&1
NETWORK=`sh -c "dialog --extra-button --extra-label \"Rescan\" \
--backtitle \"FreeBSD Wifi\" --title \"Network Selection\" --menu \
\"Select a wireless network to connect to.\" 0 0 0 \
$(echo $NETWORKS | tr '\n' ' ')" 2>&1 1>&3`
case $? in
0) # OK
;;
1) # Cancel
exit 1
;;
3) # Rescan
exec $0 $@
;;
esac
exec 3>&-
current_id=`check_network "$NETWORK"`
if [ $current_id -ge 0 ] ; then
sh -c "dialog --backtitle \"FreeBSD Wifi\" --title \"Connect to Network\" --yesno \"Connect to configured network: $NETWORK ?\" 0 0"
if [ $? -eq 0 ] ; then
final $NETWORK $current_id
fi
fi
ENCRYPTION=`echo "$NETWORKS" | awk -F '\t' \
"/^\"$NETWORK\"\t/ {printf(\"%s\n\", \\\$2 );}"`
if echo $ENCRYPTION | grep -q 'PSK' ; then
exec 3>&1
PASS=`dialog --insecure --backtitle "FreeBSD Wifi" \
--title "WPA Setup" --mixedform "" 0 0 0 \
"SSID" 1 0 "$NETWORK" 1 12 0 0 2 \
"Password" 2 0 "" 2 12 15 63 1 \
2>&1 1>&3` \
|| exec $0 $@
exec 3>&-
if [ $current_id -ge 0 ] ; then
update_psk "$NETWORK" "$PASS"
else
current_id=`wpa_cli -i $iface add_network | tail -1`
wpa_cli -i $iface set_network $current_id ssid "\"$NETWORK\""
update_psk "$NETWORK" "$PASS"
fi
elif echo $ENCRYPTION | grep -q WEP ; then
exec 3>&1
WEPKEY=`dialog --insecure --backtitle "FreeBSD Wifi" \
--title "WEP Setup" --mixedform "" 0 0 0 \
"SSID" 1 0 "$NETWORK" 1 12 0 0 2 \
"WEP Key 0" 2 0 "" 2 12 15 0 1 \
2>&1 1>&3` \
|| exec $0 $@
if [ $current_id -ge 0 ] ; then
wpa_cli -i $iface set_network $current_id wep_key0 "\"$WEPKEY\""
else
current_id=`wpa_cli -i $iface add_network | tail -1`
wpa_cli -i $iface set_network $current_id ssid "\"$NETWORK\""
wpa_cli -i $iface set_network $current_id key_mgmt "NONE"
wpa_cli -i $iface set_network $current_id wep_tx_keyidx 0
wpa_cli -i $iface set_network $current_id wep_key0 "\"$WEPKEY\""
fi
else # Open
if [ $current_id -ge 0 ] ; then
echo "Use Open Network $NETWORK"
else
current_id=`wpa_cli -i $iface add_network | tail -1`
wpa_cli -i $iface set_network $current_id ssid "\"$NETWORK\""
wpa_cli -i $iface set_network $current_id key_mgmt "NONE"
fi
fi
final $NETWORK $current_id

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最后給它一個(gè)執(zhí)行權(quán)限

sudo chmod +x wifi.sh

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執(zhí)行

./wifi.sh

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來(lái)自： xiaofenglib > 《pcDuino》

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