openwrt中LED的控制
上手总结
配置方法一 简单操作
直接进入
/sys/class/leds目录下面。以<路由器名字>:颜色:<功能>格式命名的目录均对应一个LED。进入要操作的目录，重点是
trigger(触发方式) 、brightness（开关）、delay_off(熄灯时间)、delay_on(亮灯时间)#ls brightness delay_on max_brightness trigger delay_off device subsystem uevent
对文件brightness写入0/1，关闭/打开LED灯。如 ：
echo 0 > brightness.设置闪烁：
echo timer > trigger echo 1000 > delay_on echo 1000 > delay_off
常用示例：关闭路由器所有led脚本
#!/bin/ash for i in `ls /sys/class/leds` do cd /sys/class/leds cd $i echo 0 > brightness done
配置方法二
修改配置文件
/etc/config/system往下细看
配置文件
/etc/config/system
#......
config led 'led_internet'
option name 'internet'
option sysfs 'newifi-d2:amber:internet'
option trigger 'switch0'
option port_mask '0x10'
config led 'led_wlan2g'
option name 'WiFi 2.4GHz'
option sysfs 'newifi-d2:blue:wlan2g'
option trigger 'netdev'
option mode 'link tx rx'
option dev 'ra0'
config led 'led_wlan5g'
option name 'WiFi 5GHz'
option sysfs 'newifi-d2:blue:wlan5g'
option trigger 'netdev'
option mode 'link tx rx'
option dev 'rai0'添加配置
所有可以被控制的LED灯均在/sys/class/leds目录下。例如：
ls /sys/class/leds/
newifi-d2:amber:internet newifi-d2:blue:power newifi-d2:blue:wlan5g
newifi-d2:amber:power newifi-d2:blue:usb
newifi-d2:blue:internet newifi-d2:blue:wlan2gLED受系统中的各种事件控制，由对应的trigger指定。：
# cat /sys/class/leds/newifi-d2:blue:usb/trigger
[none] switch0 timer default-on netdev usbport phy0rx phy0tx phy0assoc phy0radio phy0tpt phy1rx phy1tx phy1assoc phy1radio phy1tpt
# echo "default-on" > /sys/class/leds/newifi-d2:blue:usb/trigger
# cat /sys/class/leds/newifi-d2:blue:usb/trigger
none switch0 timer [default-on] netdev usbport phy0rx phy0tx phy0assoc phy0radio phy0tpt phy1rx phy1tx phy1assoc phy1radio phy1tpt执行以上命令，可以打开对应的LED灯，重启系统会失效。需要永久生效则写入/etc/config/system。
例如：
#查看
#uci show system | grep 'system.led'
system.led_usb=led
system.led_usb.name='USB'
system.led_usb.sysfs='newifi-d2:blue:usb'
system.led_usb.trigger='usbport'
system.led_usb.interval='50'
system.led_usb.dev='1-1'
#修改
uci set system.led_sub.trigger='default-on'
uci commit
#或者
uci batch <<EOF
set system.led_usb=led
set system.led_usb.name='USB'
set system.led_usb.sysfs='newifi-d2:blue:usb'
set system.led_usb.trigger='default-on'
EOF
uci commit
#重启 生效
service led restartLed triggers
-
none
Name | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | none |
-
switch0
Name | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
port_mask | integer | no | 0 | Hexadecimal bit mask that encodes the regarded switch ports |
speed_mask | ? | ? | (none) | Example value: ‘0xf’ |
trigger | string | yes | (none) | switch0 |
-
Timer
#安装命令
opkg install kmod-ledtrig-timerName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
delayoff | integer | yes | (none) | How long (in milliseconds) the LED should be off. |
delayon | integer | yes | (none) | How long (in milliseconds) the LED should be on. |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | timer |
-
default-on: LED灯常亮，已经被弃用，使用default=1 trigger=none
#安装命令
opkg install kmod-ledtrig-default-onName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | default-on |
-
heartbeat
#安装
opkg install kmod-ledtrig-heartbeatName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | heartbeat |
-
nand-disk
Name | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | nand-disk |
-
netdev
#安装
opkg install kmod-ledtrig-netdevName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
dev | string | yes | (none) | Name of the network interface which status should be reflected |
mode | string | yes | (none) | One or more of link, tx, or rx, seperated by spaces |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | netdev |
interval | ? | ? | (none) | Example value: ‘50’ |
-
WiFi Activity triggers: 当在物理接口而不是软件网络接口中触发的事件上，LED闪烁。除了phy触发器具有更多事件之外，如果您想分别监视2.4 GHz无线电（通常为phy0）和5 GHz无线电（通常为phy1），它还提供了静态LED设置的可能性。netdev无法保证这种区分，因为根据当前的网络设置，wlan0可能是指2.4 GHz或5 GHz无线电。
Name | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | phy0rx, phy0tx, phy0assoc, phy0radio or phy0tpt |
phy0rx- 接收时闪烁。
phy0tx- 传输时闪烁。
phy0assoc- 在客户端关联上闪烁。
phy0radio-（未知，此选项对我的tl-wr1043nd无效）
phy0tpt- 网络活动缓慢且稳定地闪烁。与tx和rx模式的充满活力的闪烁相比
-
usbdev / usbport
#安装
opkg install kmod-ledtrig-usbdevName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
dev | string | yes | (none) | Name of USB device to monitor. |
interval | integer | yes | (none) | Interval in ms when device is active. |
sysfs | string | yes | (none) | LED device name |
trigger | string | yes | (none) | usbdev – This may be |
-
gpio
#安装
opkg install kmod-ledtrig-gpioName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
-
Net filter
#安装
opkg install kmod-ipt-led
#示例：当ssh连接通信时触发
iptables -A INPUT -p tcp --dport 22 -j LED --led-trigger-id ssh --led-delay 1000
#然后将新触发器连接到系统上的LED
echo netfilter-ssh > /sys/class/leds/<ledname>/triggerName | Type | Required | Default | Description |
default | integer | no | 0 | LED state before trigger: 0 means OFF and 1 means ON |
示例
Heartbeat led
config 'led'
option 'sysfs' 'wrt160nl:amber:wps'
option 'trigger' 'heartbeat'WLAN led
config 'led' 'wlan_led'
option 'name' 'WLAN'
option 'sysfs' 'tl-wr1043nd:green:wlan'
option 'trigger' 'netdev'
option 'dev' 'wlan0'
option 'mode' 'link tx rx'3G led
当USB正确注册到3G / EDGE / GPRS网络时，此指示灯点亮。
config 'led'
option 'name' '3G'
option 'sysfs' 'asus:blue:3g'
option 'trigger' 'netdev'
option 'dev' '3g-wan'
option 'mode' 'link'Timer led - 500ms ON, 2000ms OFF
config 'led'
option 'sysfs' 'wrt160nl:blue:wps'
option 'trigger' 'timer'
option 'delayon' '500'
option 'delayoff' '2000'led服务脚本
/etc/init.d/led
#!/bin/sh /etc/rc.common
# Copyright (C) 2008 OpenWrt.org
START=96
load_led() {
local name
local sysfs
local trigger
local dev
local ports
local mode
local default
local delayon
local delayoff
local interval
config_get sysfs $1 sysfs
config_get name $1 name "$sysfs"
config_get trigger $1 trigger "none"
config_get dev $1 dev
config_get ports $1 port
config_get mode $1 mode
config_get_bool default $1 default "nil"
config_get delayon $1 delayon
config_get delayoff $1 delayoff
config_get interval $1 interval "50"
config_get port_state $1 port_state
config_get delay $1 delay "150"
config_get message $1 message ""
config_get gpio $1 gpio "0"
config_get inverted $1 inverted "0"
if [ "$trigger" = "rssi" ]; then
# handled by rssileds userspace process
return
fi
[ "$trigger" = "usbdev" ] && {
# Backward compatibility: translate to the new trigger
trigger="usbport"
# Translate port of root hub, e.g. 4-1 -> usb4-port1
ports=$(echo "$dev" | sed -n 's/^\([0-9]*\)-\([0-9]*\)$/usb\1-port\2/p')
# Translate port of extra hub, e.g. 2-2.4 -> 2-2-port4
[ -z "$ports" ] && ports=$(echo "$dev" | sed -n 's/\./-port/p')
}
[ -e /sys/class/leds/${sysfs}/brightness ] && {
echo "setting up led ${name}"
printf "%s %s %d\n" \
"$sysfs" \
"$(sed -ne 's/^.*\[\(.*\)\].*$/\1/p' /sys/class/leds/${sysfs}/trigger)" \
"$(cat /sys/class/leds/${sysfs}/brightness)" \
>> /var/run/led.state
[ "$default" = 0 ] &&
echo 0 >/sys/class/leds/${sysfs}/brightness
echo $trigger > /sys/class/leds/${sysfs}/trigger 2> /dev/null
ret="$?"
[ $default = 1 ] &&
cat /sys/class/leds/${sysfs}/max_brightness > /sys/class/leds/${sysfs}/brightness
[ $ret = 0 ] || {
echo >&2 "Skipping trigger '$trigger' for led '$name' due to missing kernel module"
return 1
}
case "$trigger" in
"netdev")
[ -n "$dev" ] && {
echo $dev > /sys/class/leds/${sysfs}/device_name
for m in $mode; do
[ -e "/sys/class/leds/${sysfs}/$m" ] && \
echo 1 > /sys/class/leds/${sysfs}/$m
done
echo $interval > /sys/class/leds/${sysfs}/interval
}
;;
"timer"|"oneshot")
[ -n "$delayon" ] && \
echo $delayon > /sys/class/leds/${sysfs}/delay_on
[ -n "$delayoff" ] && \
echo $delayoff > /sys/class/leds/${sysfs}/delay_off
;;
"usbport")
local p
for p in $ports; do
echo 1 > /sys/class/leds/${sysfs}/ports/$p
done
;;
"port_state")
[ -n "$port_state" ] && \
echo $port_state > /sys/class/leds/${sysfs}/port_state
;;
"gpio")
echo $gpio > /sys/class/leds/${sysfs}/gpio
echo $inverted > /sys/class/leds/${sysfs}/inverted
;;
switch[0-9]*)
local port_mask speed_mask
config_get port_mask $1 port_mask
[ -n "$port_mask" ] && \
echo $port_mask > /sys/class/leds/${sysfs}/port_mask
config_get speed_mask $1 speed_mask
[ -n "$speed_mask" ] && \
echo $speed_mask > /sys/class/leds/${sysfs}/speed_mask
[ -n "$mode" ] && \
echo "$mode" > /sys/class/leds/${sysfs}/mode
;;
esac
}
}
start() {
[ -e /sys/class/leds/ ] && {
[ -s /var/run/led.state ] && {
local led trigger brightness
while read led trigger brightness; do
[ -e "/sys/class/leds/$led/trigger" ] && \
echo "$trigger" > "/sys/class/leds/$led/trigger"
[ -e "/sys/class/leds/$led/brightness" ] && \
echo "$brightness" > "/sys/class/leds/$led/brightness"
done < /var/run/led.state
rm /var/run/led.state
}
config_load system
config_foreach load_led led
}
}
