Simple counter for norns

framerate_test.lua

-- Framerate Test
--

local SCREEN_FRAMERATE = 15

local counter = 1

function init()
  
  local screen_refresh_metro = metro.init()
  screen_refresh_metro.event = function()
    redraw()
  end
  screen_refresh_metro:start(1 / SCREEN_FRAMERATE)
  
end


function redraw()
  screen.clear()
  
  counter = counter + 1
  if counter > SCREEN_FRAMERATE then counter = 1 end
  
  screen.move(10, 10)
  screen.level(15)
  screen.text(counter)
  
  screen.update()
end