Single/double press detection from www.logicmachine

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-- maximum time between presses
presstimeout = 0.5

mapping = {
  ['9/0/0'] = {
    -- single press
    single_address = '9/1/0',
    single_value = FALSE,
    -- double press
    double_address = '9/2/0',
    double_value = TRUE,
    -- multi (3+) press (optional)
    multi_address = '9/0/9',
    multi_value = 33,
  },
  ['9/0/1'] = {
    -- single press
    single_address = '1/3/40',
    single_value = TRUE,
    -- double press
    double_address = '1/3/41',
    double_value = TRUE,
  },
}

require('copas')

function write(map, key)
  local address = map[ key .. '_address']
  local value = map[ key .. '_value']

  if address and value ~= nil then
    grp.write(address, value)
    return true
  end
end

function timerthread(addr, map)
  local counter = 0
  local timeout = -1 -- suspend thread

  while true do
    copas.sleep(timeout)

    if map.counter == counter then
      if timeout == presstimeout then
        if counter == 1 then
          write(map, 'single')
        elseif counter == 2 or not write(map, 'multi') then
          write(map, 'double')
        end

        timeout = -1
        counter = 0
        map.counter = 0
      end
    else
      timeout = presstimeout
      counter = map.counter
    end
  end
end

for addr, map in pairs(mapping) do
  map.counter = 0
  map.thread = copas.addthread(timerthread, addr, map)
end

function eventhandler(event)
  local map = mapping[ event.dst ]

  if map then
    map.counter = map.counter + 1
    copas.wakeup(map.thread)
  end
end

lb = require('localbus').new(1)
lbethandler('groupwrite', eventhandler)

copas.addserver(lb.sock, function()
  lb.sock = copas.wrap(lb.sock)

  while true do
    lbtep()
  end
end, 1)

copas.loop()



ONLY: adress and value...