mesys control cc

me = peripheral.wrap("me_drive_0")
m = peripheral.wrap("top")
msize = {m.getSize()}
function draw_line(x, y, length, color)
    mon.setBackgroundColor(color)
    mon.setCursorPos(x,y)
    mon.write(string.rep(" ", length))
end
function progress_bar(x, y, length, minVal, maxVal, bar_color, bg_color)
  draw_line(x, y, length, bg_color) --backgoround bar
  local barSize = math.floor((minVal/maxVal) * length)
  draw_line(x, y, barSize, bar_color) --progress so far
end
function drawScreen()
  m.clear()
  m.setCursorPos(1,1)
  m.setBackgroundColor(colors.blue)
  for i = 1,msize[1] do
    m.write(" ")
  end
  m.setCursorPos(1,msize[2])
  --for i = 1,msize[1] do
  m.write(" SpaceJunkies MESys Control! ")
  --end
  m.setBackgroundColor(colors.black)
  m.setTextColor(colors.yellow)
  m.setCursorPos(2,3)
  m.write("Status: ")
  if me.getUnusedBytes() == 0 then
    m.setTextColor(colors.red)
    m.write("Offline")
  else
    m.setTextColor(colors.lime)
    m.write("Online")
    m.setCursorPos(2,5)
    m.setTextColor(colors.yellow)
    m.write("Storage Used: ")
    gub = tonumber(me.getTotalBytes())-tonumber(me.getFreeBytes())
    pc = (gub/tonumber(me.getTotalBytes()))*100
    if string.find(pc,".") then
      find = string.find(pc,".")
      pc = string.sub(pc,1,find+1)
    end
    m.write(pc.."%")
  end
end

drawScreen()