test2

function TerminalHandler()
while true do
local interval12 = loaddata("interval")
write(interval12)
write("interval for timer : ")
local interval = read()
local interval1 = {}
interval1[1] = interval
savedata(interval1,"interval")
end
end
function timer()
  while true do
  local interval20 = loaddata("interval")
  local interval = interval20[1]
  sleep(interval)
  rs.setOutput("left",true)
  sleep(interval)
  rs.setOutput("left",false)
  end
end
function process()
  local c1 = coroutine.create(TerminalHandler)
  local c2 = coroutine.create(timer,interval)
  local eventData = {}

  while true do
        --# resume our routine giving it the event data
        coroutine.resume(c1, unpack(eventData))

        if coroutine.status(c1) == "dead" then
          c1 = coroutine.create(TerminalHandler)
        end

        --# resume our routine giving it the event data
        coroutine.resume(c2, unpack(eventData))

        if coroutine.status(c2) == "dead" then
          c2 = coroutine.create(timer)
        end

        eventData = { coroutine.yield() } --# you could also use os.pullEventRaw here, but again, it is just a wrapper of coroutine.yield, so why not just use the top level function
  end
end
function savedata(table,id)
  local file = fs.open(id,"w")
  file.write(textutils.serialize(table))
  file.close()
end
function loaddata(id)
  local file = fs.open(id,"r")
  local data = file.readAll()
  file.close()
  return textutils.unserialize(data)
end


process()