How to redirect the user to another page with CodeiIgniter?

I'm starting with CodeIgniter and I'm having a little trouble linking the pages.

I'm doing it this way:

<li class="nav-item mr-3">
    <a class="nav-link page-scroll" href="<?php echo base_url('nomeApp/login');?>">Login</a>
</li>

My controller is like this

class Homepage extends CI_Controller{

function __construct(){
    parent::__construct();
    $this->load->helper('url');
}

public function index()
{
    $this->load->view('veloxmob/index');
}

public function login()
{
    $this->load->view('login/login');
}}