TICK_MS = 1000

local seconds = 0
local black = gui.color(0, 0, 0)
local white = gui.color(255, 255, 255)
local red = gui.color(255, 0, 0)

function setup()
  gui.clear(white)
  gui.drawText("hello from sd card", 10, 10, black, white)
  gui.drawText("touch the screen", 10, 30, black, white)
  log.info("hello app started, screen " .. gui.width() .. "x" .. gui.height())
end

function on_tick()
  seconds = seconds + 1
  gui.fillRect(10, 50, 120, 20, white)
  gui.drawText("uptime: " .. seconds .. "s", 10, 50, black, white)
end

function on_touch(x, y)
  log.info("touch at " .. x .. ", " .. y)
  gui.fillCircle(x, y, 6, red)
end