diff options
Diffstat (limited to 'run.lua')
-rw-r--r-- | run.lua | 105 |
1 files changed, 3 insertions, 102 deletions
@@ -1,105 +1,6 @@ -local wakeup = { - port = 9, -} - - ---- Reads configuration file at [[path]] and parses a pair of MAC and broadcast addresses from it. Builds a Wake-on-LAN ---- magic packet and saves it for later use with :worker(). Returns true if no errors were encountered, otherwise a nil. -function wakeup:configure (path) - local fd = file.open(path) - if not fd then - print("Config file not found", path) - return - end - local line = fd:readline() - fd:close() - fd = nil - self.mac, self.addr = line:match("^(%S+)%s+(%S+)") - self.data = "" - for octet in self.mac:gmatch("%x%x") do - self.data = self.data .. string.char(tonumber(octet, 16)) - end - if #self.data ~= 6 then - print(string.format("Invalid MAC\t%q", self.mac)) - return - end - self.data = string.char(0xff):rep(6) .. self.data:rep(16) - return true -end - - -function wakeup:open () - self.udp = net.createUDPSocket() -end - - -function wakeup:close () - if self.udp then - self.udp:close() - end -end - - ---- Creates a new counter that has :up() method that returns true until it gets called N [[times]]. Then it returns only ---- false. -local -function new_counter (times) - return { - count = 0, - times = times, - up = function (self) - self.count = self.count + 1 - return self.count <= self.times - end, - } -end - - ---- Begins to send Wake-on-LAN magic packets to the broadcast [[.addr]] for selected [[.mac]]. Packets are sent several ---- [[times]] each separated by [[interval]]. Callback is called [[after]] all packets are sent. -function wakeup:sendout (interval, times, after) - self:open() - local count = new_counter(times) - return tmr.create():alarm(interval, tmr.ALARM_SEMI, function (timer) - if count:up() then - print("Waking up", self.mac, self.addr) - self.udp:send(self.port, self.addr, self.data) - timer:start() - else - timer:unregister() - self:close() - after() - end - end) -end - - ---- Sets up Wake Up to run when wifi is connected and configured in a network. Runs callbacks [[before]] send-outs, and ---- [[after]] they are done. -function wakeup:setup (before, after) - if not self:configure("wakeup.conf") then - error("Could not configure wakeup") - end - wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function () - before() - self:sendout(500, 5, after) - end) -end - +local wakeup = require("wakeup") return function () - gpio.write(4, gpio.HIGH) - gpio.mode(4, gpio.OUTPUT) - - tmr.create():alarm(1000, tmr.ALARM_SINGLE, function () - wakeup:setup( - function () gpio.write(4, gpio.LOW) end, - function () - wifi.setmode(wifi.NULLMODE, false) - gpio.write(4, gpio.HIGH) - end - ) - wifi.setmode(wifi.STATION, false) - wifi.sta.connect() - end) + wakeup:init() + tmr.create():alarm(1000, tmr.ALARM_SINGLE, function () wakeup:run() end) end |