test.lua

-- main.lua --
conta = 0
litro = 0
pin = 2    --> GPIO4

-- Connect
print('\nInitializing...main.lua\n')
tmr.alarm(0, 1000, 1, function()
if wifi.sta.getip() == nil then
  print("Connecting to AP...\n")
else
  ip, nm, gw=wifi.sta.getip()
  print("IP Info: \nIP Address: ",ip)
  print("Netmask: ",nm)
  print("Gateway Addr: ",gw,'\n')
  tmr.stop(0)
end
end)

-- Start a simple http server
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
conn:on("receive",function(conn,payload)
print(payload)
conn:send("<h1> Litros </h1>" .. litro)

end)
conn:on("sent",function(conn) conn:close() end)
end)

tmr.alarm(6, 100, 1, function ()
function onChange ()
  --print('The pin value has changed to '..gpio.read(pin));
  conta = conta + 1;
  if conta > 440 then
    litro = litro + 1;
    print (litro);
    conta = 0;
  end
end

gpio.mode(pin, gpio.INT)
gpio.trig(pin, 'both', onChange)
end)