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PN532 NFC RFID module + elechouse を ESP32 Arduino で試す

Last updated at Posted at 2022-03-27

(Felica/Mifare/NFC チャレンジシリーズ) その他の記事はこちら 「Felica/Mifare/NFC でいろいろ実験」
https://qiita.com/nanbuwks/items/1f416d6e45a87250ee0a


「PN532 NFC RFID module を Arduino UNO で読む」
https://qiita.com/nanbuwks/items/42f639e7eec928181298

では Arduino UNO を使いましたが、ESP32 で同様に使えるか試してみます。

上記記事でライブラリをいくつか試してみましtが、

FeliCa を使う場合は elechouse 一択のようです。

と書きました。

以下は elechouse の PN532 ライブラリを ESP32 で使えるか試した結果です

環境

  • Arduino 1.8.10 Linux 版
    • portable 化済
  • esp32 by Espressif Systems Version 1.0.3
  • Ubuntu Linux 20.04 AMD64
  • NFC library for Arduino
  • WEMOS LOLIN32
    • ( ≒ ESP32 DevKitC )

ライブラリ修正

「ESP32 Arduino で error: 'boolean' does not name a type」
https://qiita.com/nanbuwks/items/d62157f6fccdbed54f86

のように、PN532_SPI.cpp を直しておきます。

スケッチ

Mifare カードを読むサンプルスケッチで試します。
「ファイル」-「スケッチ例」-「カスタムライブラリのスケッチ例」-「PN532」-「ReadMifare」を選びます。

スイッチ設定

以下の接続時には、それぞれ PN532 NFC RFID module 上のスイッチを接続に合わせて設定しています。

I2C接続

IMG_20220321_163049.jpg

ESP32 PN532 NFC Module
GND GND
3V3 VCC
SDA/21 SDA
SCL/21 SCL

実行結果



Hello!
Found chip PN532
Firmware ver. 1.6
Waiting for an ISO14443A Card ...
Found an ISO14443A card
  UID Length: 4 bytes
  UID Value:  D3 6A 93 05

Seems to be a Mifare Classic card (4 byte UID)
Trying to authenticate block 4 with default KEYA value
Sector 1 (Blocks 4..7) has been authenticated
Reading Block 4:
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................

OK

SPI接続

IMG_20220321_162654.jpg

ESP32 PN532 NFC Module
3V3 VCC
(NC) RSTQ
GND GND
(NC) IRQ
MISO/19 MISO
MOSI/23 MOSI
SCK/18 SCK
SS/5/LED SS

接続設定に合わせて、スケッチの該当箇所を以下のように直します。


#if 1
  #include <SPI.h>
  #include <PN532_SPI.h>
  #include "PN532.h"

  PN532_SPI pn532spi(SPI, 5);
  PN532 nfc(pn532spi);
#elif 0
.
.
.

実行結果


Hello!
Found chip PN532
Firmware ver. 1.6
Waiting for an ISO14443A Card ...
Found an ISO14443A card
  UID Length: 4 bytes
  UID Value:  D3 6A 93 05

Seems to be a Mifare Classic card (4 byte UID)
Trying to authenticate block 4 with default KEYA value
Sector 1 (Blocks 4..7) has been authenticated
Reading Block 4:
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................

動きました

シリアル接続

image.png

ESP32 PN532 NFC Module
GND GND
3V3 VCC
16 (Serial2 RX) TXD
17 (Serial2 TX) RXD


#if 0
  #include <SPI.h>
  #include <PN532_SPI.h>
  #include "PN532.h"

  PN532_SPI pn532spi(SPI, 5);
  PN532 nfc(pn532spi);
#elif 1
  #include <PN532_HSU.h>
  #include <PN532.h>
      
  PN532_HSU pn532hsu(Serial2);
  PN532 nfc(pn532hsu);
#else 
...

動きました


Hello!
Found chip PN532
Firmware ver. 1.6
Waiting for an ISO14443A Card ...
Found an ISO14443A card
  UID Length: 4 bytes
  UID Value:  D3 6A 93 05

Seems to be a Mifare Classic card (4 byte UID)
Trying to authenticate block 4 with default KEYA value
Sector 1 (Blocks 4..7) has been authenticated
Reading Block 4:
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
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