gencheck

local side = "back"
local generator = peripheral.wrap(side)

function getStored()
  return(generator.getEnergyStored("top"))
end

function getMax()
  return(generator.getMaxEnergyStored("top"))
end

function showPct()
  local cur = getStored()
  local maxStored = getMax()
  local pct = math.floor(100 * cur / maxStored)

  return(pct.."%")
end


redstone.setOutput(side, false)
while(getStored() < getMax())
do
  print(os.time())
  print("Charging "..showPct())
  sleep(1)
end

redstone.setOutput(side, true)
while(getStored() > 0)
do
  showPct()
  print("Emitting "..showPct())
  sleep(1)
end