ComputerCraft - Draconic Reactor RF Storage Monitor

local statusChannelID = 5

-- Find Modem
local modem = peripheral.find("modem", function(n, o) return o.isWireless() end)
if modem == nil then
   error("Could not find a modem. Is one attached?")
end

-- Bind the Draconic RF Storage
local decore = peripheral.find("draconic_rf_storage")
if decore == nil then
   error("Could not Draconic RF Storage. Is one attached?")
end

function round(num, idp)
  local mult = 10^(idp or 0)
  return math.floor(num * mult + 0.5) / mult
end

local function prettyAmt(num)
   if num >= 1000000000000 then
      return (tostring(round(num/1000000000000, 2)) .. "T")
   elseif num >= 1000000000 then
      return (tostring(round(num/1000000000, 2)) .. "B")
   elseif num >= 1000000 then
      return (tostring(round(num/1000000, 2)) .. "M")
   elseif num >= 1000 then
      return (tostring(round(num/1000, 2)) .. "t")
   else
      return tostring(num)
   end
end

term.clear()
term.setCursorPos(1,1)
print("Draconic RF Storage Monitor...")
print()
print("DECore Stored: ")
print()
print("Press 'q' to quit.")
print()

local pollTimer = os.startTimer(0)
local status = {}
while true do
   local event, p1, p2, p3, p4 = os.pullEvent()
   if event == "key" then
      if p1 == 16 then -- 'q'
         term.setCursorPos(1, 6)
         return
      end
   elseif event == "timer" and p1 == pollTimer then
      -- Check the Solar charged energy cell to determine if the
      --local energyP = (decore.getEnergyStored() / decore.getMaxEnergyStored()) * 100
      --status["DECore Stored RF"] = math.floor(energyP) .. "%"
      local energyP = decore.getEnergyStored()
      status["DECore Stored RF"] = prettyAmt(energyP)
      term.setCursorPos(1,3)
      term.write("DECore Stored RF: " .. status["DECore Stored RF"] .. "         ")
      if modem ~= nil then modem.transmit(statusChannelID, 0, textutils.serialize(status)) end
      pollTimer = os.startTimer(5)
   end
end