Netgear WNDR3800 WPS按钮切换LED灯

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Netgear WNDR3800前面板的灯看起来还是挺上档次的，不过放在客厅一直闪，总觉得晃眼，故而准备使用前面板的WPS按钮来控制LED灯的亮灭。

Shell脚本

创建/root/led.sh脚本，内容如下：

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#!/bin/sh
# const
ENABLE="enable"
DISABLE="disable"
TOGGLE="toggle"
# read parameter
ope=
while getopts "edt" arg
do
        case $arg in
             e)
                ope=$ENABLE
		;;
             d)
                ope=$DISABLE
                ;;
             t)
                ope=$TOGGLE
		;;
             ?)
            	echo "unknown argument"
        	exit 1
        	;;
        esac
done
# check operator
if [[ -z $ope ]]; then
        echo "Miss operator!"
	exit 1
fi
if [ "$ope" == "$TOGGLE" ]; then
	# read current led status
        cur_state=`swconfig dev rtl8366s port 1 get led`
	
	if [ "$cur_state" == "0" ]; then
		ope=$ENABLE
	else
		ope=$DISABLE
	fi
fi 
# check command
if [ "$ope" == "$DISABLE" ]; then
	# turn on power green led                                           
        echo 0 > /sys/class/leds/netgear\:green\:power/brightness         
        echo 0 > /sys/class/leds/netgear\:orange\:power/brightness	
	# turn off all group 1 (i.e., green) and group 2 (i.e., orange) leds
	swconfig dev rtl8366s port 1 set led 0
	swconfig dev rtl8366s port 2 set led 0
	
	# USB
	echo 0 > /sys/class/leds/netgear\:green\:usb/brightness
	# 2.4GHz
	echo 0 > /sys/class/leds/ath9k-phy0/brightness
	# 5GHz
	echo 0 > /sys/class/leds/ath9k-phy1/brightness
fi
if [ "$ope" == "$ENABLE" ]; then
	# turn on power green led
	echo 128 > /sys/class/leds/netgear\:green\:power/brightness
	echo 0 > /sys/class/leds/netgear\:orange\:power/brightness
	# turn off all group 1 (i.e., green) and group 2 (i.e., orange) leds
	# turn on all group 1 (i.e., green) and group 2 (i.e., orange) leds
	swconfig dev rtl8366s port 1 set led 6
	swconfig dev rtl8366s port 2 set led 9
                      
        # USB                                            
        echo 128 > /sys/class/leds/netgear\:green\:usb/brightness  
                                 
        # 2.4GHz                                                   
        echo 128 > /sys/class/leds/ath9k-phy0/brightness             
        # 5GHz                                                    
        echo 128 > /sys/class/leds/ath9k-phy1/brightness 
fi

目前这一脚本中控制全部LED灯：电源、2.4GHz、5GHz、USB、WAN、LAN

测试脚本是否正常工作

  • 点亮LED灯 /root/led.sh -e
  • 熄灭LED灯 /root/led.sh -d
  • 切换LED灯 /root/led.sh -t

接入按钮事件

在/etc/hotplug.d位置创建一个目录，名为button，然后在/etc/hotplug.d/button下创建名为01-radio-toggle的文件

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#!/bin/sh
if [ "$BUTTON" = "wps" ] && [ "$ACTION" = "pressed" ]; then
        ( sleep 1; /root/led.sh -t ) &
fi

测试：按下WPS按钮就可以切换前面板中的部分LED灯了

开机设置默认值

如果开机就希望LED灯熄灭，可以使用crontab：#crontab -e

添加如下命令

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# turn off led
@reboot /root/led.sh -d

参考