-- Serial port trigger output script


-- VoteChanged() is called with two arguments:
--  1. Sum of votes, an integer
--  2. Table (array) of active triggers
-- Each entry in the array is itself a table with:
--  ["time"] = trigger time as time_t
--  ["time_nsec"] = trigger time, nanoseconds part
--  ["weight"] = vote weight
--  ["description"] = JSON describing trigger itself
-- This function should return a string, which will be
-- output onto the serial port.

local IsOn = false

function VoteChanged(voteSum, votes)
  -- this example prints a "1" when the sum of votes
  -- equals or exceeds 1000; it then prints a "0" when
  -- it falls below again

  if voteSum >= 1000 then
    if IsOn then
      return ""
    end
    IsOn = true
    return "1\r\n"
  end

  if IsOn then
    IsOn = false
    return "0\r\n"
  end

  return ""
end


-- SerialRead() is an optional function. If provided
-- it is called with one argument: a string of data
-- that was received on the serial port. Note it will
-- likely be received in small (even 1-character)
-- chunks, not altogether as one block of input.

local LastSerialData

function SerialRead(data)
  LastSerialData = data
end


-- vim: ts=2:sw=2:et