Disk/mem/redworks/programs/circuits/D-FlipFlop

--2
--2
--0
input = {}
output = {}
extra = {}
input[1] = "front"
input[2] = "left"
output[1] = "right"
output[2] = "back"
-- D-FlipFlop (Coded by Ferial's)
-- press q or Q to exit to shell

-- front  input: Clock
-- left   input: D (Data)
-- right output: Q (Data Out)
-- back  output: Inv Q (Inverted Data Out)

term.clear()
term.setCursorPos(1,2)
print("D-FlipFlop running. Press Q to stop.")

--set initial state
 QBit = false;
 redstone.setOutput(output[1],QBit)
 redstone.setOutput(output[2], not QBit)

lastinpfront = false

while true do

 --wait on an event
 event, param = os.pullEvent()

 -- Key event. On a key Q or q we exit to shell
 if event == "char" and (param == "q" or  param == "Q") then
  print("Device stopped")
  break
 end

 -- redstone event
 if event == "redstone" then
  -- read clock input
  inpfront = redstone.getInput(input[1])
  if (inpfront and not lastinpfront) then
   -- rising edge detected
   -- read data Input
   QBit = redstone.getInput(input[2])
   -- delay the output at least a bit more than 0.05 sec to allow synchronous working circuits
   sleep(0.06)
   -- set new output
   -- well I don't think the order matters (single core app) but let's do it the safe way and go low first
   if QBit then
    redstone.setOutput(output[2], not QBit)
    redstone.setOutput(output[1],QBit)
   else
    redstone.setOutput(output[1],QBit)
    redstone.setOutput(output[2], not QBit)
   end
  end
  lastinpfront = inpfront
 end

end