Simple Staircase Timer

[admin]

Resident script with 0 sleep time. Adjust timers table as needed. This script can handle multiple timers.

Code:

if not client then
  timers = {
    ['1/1/1'] = {
      output = '1/1/2', -- dimmer control (0..100%)
      onvaluehigh = 90, -- high output value in %
      onvaluelow = 20, -- low output value in %
      timeouthigh = 10 * 60, -- time to keep high value (in seconds)
      timeoutlow = 10 * 60, -- time to keep low value (in seconds)
    }
  }

  function timersetstate(timer, state)
    grp.checkwrite(timer.output, timer['onvalue' .. state] or 0)
    timer.state = state
    timer.ticks = timer['timeout' .. state]
  end

  function timertimeout(timer)
    local state = timer.state == 'high' and 'low' or 'off'
    timersetstate(timer, state)
  end

  for _, timer in ipairs(timers) do
    timer.state = 'off'
  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
      if value == 1 then
        timersetstate(timer, 'high')
      end
    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