Computercraft t-flip-flop

inputSide = 'bottom'
outputSide = 'top'

state = false

print("Starting t-flip-flop")

while true do
  os.pullEvent("redstone")
  if redstone.getInput(inputSide) == false then
    os.sleep(1)
    if redstone.getOutput(outputSide) then redstone.setOutput(outputSide, false)
    elseif not redstone.getOutput(outputSide) then redstone.setOutput(outputSide,true) end
  end

end