Timer for multiple toilet's vents

[admin]

Timer script:

Code:

if not client then
  -- input to output mapping
  mapping = {
    ['0/0/1'] = '0/0/6',
    ['0/1/1'] = '0/1/6',
    ['0/2/1'] = '0/2/6',
  }

  -- turn output on when input is on for X seconds
  ondelay = 5 * 60
  -- keep output on for X seconds
  offdelayaddress = '11/4/1'

  timers = {}
  for input, output in pairs(mapping) do
    timers[ input ] = {
      output = output,
      state = 'off',
    }
  end

  function timerset(timer, input)
    if input then
      if timer.state ~= 'ondelay' then
        timer.state = 'ondelay'
        timer.ticks = ondelay
      end
    else
      grp.checkwrite(timer.output, true)
      timer.state = 'offdelay'
      timer.ticks = grp.getvalue(offdelayaddress)
    end
  end

  function timertimeout(timer)
    if timer.state == 'ondelay' then
      timerset(timer, false)
    else
      grp.checkwrite(timer.output, false)
      timer.state = 'off'
      timer.ticks = nil
    end
  end

  grp.sender = 'tm'

  client = require('localbus').new(0.1)
  client:sethandler('groupwrite', function(event)
    local timer = timers[ event.dst ]
    if timer and event.sender ~= grp.sender then
      local value = tonumber(event.datahex, 16) or 0
      timerset(timer, value ~= 0)
    end
  end)
end

client:loop(1)

for _, timer in pairs(timers) do
  if timer.ticks then
    timer.ticks = timer.ticks - 1

    if timer.ticks == 0 then
      timertimeout(timer)
    end
  end
end