leds

一. 网址参考

　　1. openwrt的leds.sh（github）

 

二. 函数简介

　　1. 源码：

#!/bin/sh
# Copyright (C) 2013 OpenWrt.org

led_set_attr() {
    [ -f "/sys/class/leds/$1/$2" ] && echo "$3" > "/sys/class/leds/$1/$2"
}

led_timer() {
    led_set_attr $1 "trigger" "timer"
    led_set_attr $1 "delay_on" "$2"
    led_set_attr $1 "delay_off" "$3"
}

led_on() {
    led_set_attr $1 "trigger" "none"
    led_set_attr $1 "brightness" 255
}

led_off() {
    led_set_attr $1 "trigger" "none"
    led_set_attr $1 "brightness" 0
}

status_led_set_timer() {
    led_timer $status_led "$1" "$2"
    [ -n "$status_led2" ] && led_timer $status_led2 "$1" "$2"
}

status_led_set_heartbeat() {
    led_set_attr $status_led "trigger" "heartbeat"
}

status_led_on() {
    led_on $status_led
    [ -n "$status_led2" ] && led_on $status_led2
}

status_led_off() {
    led_off $status_led
    [ -n "$status_led2" ] && led_off $status_led2
}

status_led_blink_slow() {
    led_timer $status_led 1000 1000
}

status_led_blink_fast() {
    led_timer $status_led 100 100
}

status_led_blink_preinit() {
    led_timer $status_led 100 100
}

status_led_blink_failsafe() {
    led_timer $status_led 50 50
}

status_led_blink_preinit_regular() {
    led_timer $status_led 200 200
}