Nerves.IO.PN532

Hardware

Any PN532 board should work as long as it supports UART, I've been using the following board to develop.

NFC/RFID PN532 breakout Module

Installation

If available in Hex, the package can be installed as:

1. Add nerves_io_pn532 to your list of dependencies in mix.exs:

```elixir
def deps do
  [{:nerves_io_pn532, "~> 0.1.0"}]
end
```

2. Ensure nerves_io_pn532 is started before your application:

```elixir
def application do
  [applications: [:nerves_io_pn532]]
end
```

How to use

defmodule MifareClientImplementation do
  use Nerves.IO.PN532.MifareClient

  def card_detected(card = %{tg: target_number, sens_res: sens_res, sel_res: sel_res, nfcid: identifier}) do
    Logger.info("Detected new Mifare card with ID: #{Base.encode16(identifier)}")
  end

  def card_lost(card = %{tg: target_number, sens_res: sens_res, sel_res: sel_res, nfcid: identifier}) do
    Logger.info("Lost connection with Mifare card with ID: #{Base.encode16(identifier)}")
  end
end

defmodule Example do
  def main do
    with {:ok, pid} <- MifareClientImplementation.start_link(),
         :ok <- MifareClientImplementation.open(pid, "COM3"),
         :ok <- MifareClientImplementation.start_target_detection(pid) do
      # ...
    end
  end
end