Grove – NFC 近場通訊模組 seeed原廠

商品說明

Grove – NFC 近場通訊模組

Grove – NFC 近場通訊 是指短距離的無線通訊技術，應用的場合包括門禁管理系統和移動支付系統。近場通訊模塊集成了PN532收發芯片，在13.56MHz下無需接觸即可通訊，支持讀寫工作在13.56MHz的標籤，或者兩個近場通訊模塊可以完成點對點通信。近場通訊模塊配有的通訊接口包括I2C和UART，UART為默認的通訊方式。另外，模塊的天線引出的設計，無論你使用哪種盒子，都能方便地引出天線，給其他的設計騰出空間。

規格參數

• 工作電壓3.3V
• 工作電流：不工作時73mA，讀寫時83mA
• 支持接口：I2C和UART（默認）
• 支持ISO14443 A和B兩種協議
• 最大通訊範圍了28mm
• 支持點對點通訊
• 尺寸：25.43mm*20.35mm
• 配有通用的Grove接口

出貨清單

• Grove – NFC x1,
• NFC Antenna x1,
• IPX connect wire – 120mm x1,
• 24AWG Grove Cable  – 4P-4P-2.0-200mm x1

使用說明

下面介紹如何使用近場通訊模塊。

1. 用Grove連接線把模塊連接到Grove基板I2C的Grove口上。
2. 把Grove基板插到Arduino板上，Arduino板用USB連接線連到電腦上。
3. 下載PN532庫文件，把下面4個文件夾（PN532、PN532_SPI、PN532_I2C 、PN532_HSU放到Arduino庫函數位置。
4. 下載Don’s NDEF庫文件，同樣安裝到Arduino庫函數的位置。
5. 重啟Arduino IDE。打開文件->示例->NDEF->ReadTag。
6. 使用NDEF庫文件提供的I2C接口，需要焊掉背面P1和UART的連接，焊通P1和I2C。注意：Seeeduino Mega、Arduino Mega、Seeeduino lite、Arduino Leonardo也可以使用UART接口，需使用下面更改後的代碼。

當然你也可以使用UART接口而不需要額外的切割工作，這種情況下最好使用Seeeduino Mega(Arduino Mega) or Seeeduino lite(Arduino Leonardo)。下面是更新的程序：

<span class="co2">#include "PN532_HSU.h" </span> <span class="co2">#include "PN532.h" </span> <span class="co2">#include "NfcAdapter.h"</span>   PN532_HSU interface <span class="br0">( </span><span class="kw2">Serial1 </span><span class="br0">) </span><span class="sy4">;</span> NfcAdapter nfc <span class="sy1">=</span> NfcAdapter <span class="br0">(</span> interface <span class="br0">) </span><span class="sy4">;</span>   <span class="kw4">void </span> <span class="kw2">setup </span><span class="br0">( </span><span class="kw4">void </span><span class="br0">) </span> <span class="br0">{ </span> <span class="kw2">Serial</span> . <span class="kw3">begin </span><span class="br0">( </span><span class="nu0">115200 </span><span class="br0">) </span><span class="sy4">; </span> <span class="kw2">Serial</span> . <span class="kw3">println </span><span class="br0">( </span><span class="st0">"NDEF Reader" </span><span class="br0">) </span><span class="sy4">;</span> nfc. <span class="kw3">begin </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">; </span> <span class="br0">}</span>   <span class="kw4">void </span> <span class="kw2">loop </span><span class="br0">( </span><span class="kw4">void </span><span class="br0">) </span> <span class="br0">{ </span> <span class="kw2">Serial</span> . <span class="kw3">println </span><span class="br0">( </span><span class="st0">" <span class="es1">n</span> Scan a NFC tag <span class="es1">n</span> " </span><span class="br0">) </span><span class="sy4">; </span> <span class="kw1">if </span> <span class="br0">(</span> nfc. <span class="me1">tagPresent </span><span class="br0">( </span><span class="br0">) </span><span class="br0">) </span> <span class="br0">{</span> NfcTag tag <span class="sy1">=</span> nfc. <span class="kw3">read </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">;</span> tag. <span class="kw3">print </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">; </span> <span class="br0">} </span> <span class="kw3">delay </span><span class="br0">( </span><span class="nu0">5000 </span><span class="br0">) </span><span class="sy4">; </span> <span class="br0">}</span>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

<span class="co2">#include "PN532_HSU.h" </span> <span class="co2">#include "PN532.h" </span> <span class="co2">#include "NfcAdapter.h"</span>   PN532_HSU interface <span class="br0">( </span><span class="kw2">Serial1 </span><span class="br0">) </span><span class="sy4">;</span> NfcAdapter nfc <span class="sy1">=</span> NfcAdapter <span class="br0">(</span> interface <span class="br0">) </span><span class="sy4">;</span>   <span class="kw4">void </span> <span class="kw2">setup </span><span class="br0">( </span><span class="kw4">void </span><span class="br0">) </span> <span class="br0">{ </span>     <span class="kw2">Serial</span> . <span class="kw3">begin </span><span class="br0">( </span><span class="nu0">115200 </span><span class="br0">) </span><span class="sy4">; </span>     <span class="kw2">Serial</span> . <span class="kw3">println </span><span class="br0">( </span><span class="st0">"NDEF Reader" </span><span class="br0">) </span><span class="sy4">;</span>     nfc. <span class="kw3">begin </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">; </span> <span class="br0">}</span>   <span class="kw4">void </span> <span class="kw2">loop </span><span class="br0">( </span><span class="kw4">void </span><span class="br0">) </span> <span class="br0">{ </span>     <span class="kw2">Serial</span> . <span class="kw3">println </span><span class="br0">( </span><span class="st0">" <span class="es1">n</span> Scan a NFC tag <span class="es1">n</span> " </span><span class="br0">) </span><span class="sy4">; </span>     <span class="kw1">if </span> <span class="br0">(</span> nfc. <span class="me1">tagPresent </span><span class="br0">( </span><span class="br0">) </span><span class="br0">) </span>     <span class="br0">{</span>         NfcTag tag <span class="sy1">=</span> nfc. <span class="kw3">read </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">;</span>         tag. <span class="kw3">print </span><span class="br0">( </span><span class="br0">) </span><span class="sy4">; </span>     <span class="br0">} </span>     <span class="kw3">delay </span><span class="br0">( </span><span class="nu0">5000 </span><span class="br0">) </span><span class="sy4">; </span> <span class="br0">}</span>

也可以使用Seeeduino或Arduino的UART接口和近場通訊模塊通訊，但無法使用串口監視器。

Documents

Grove – NFC wiki

＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

Grove – NFC

Near Field Communication (NFC) is a set of short-range wireless technologies. It’s behind daily applications such as access control system and mobile payment system.

Grove NFC features a highly integrated transceiver module PN532 which handles contactless communication at 13.56MHz. You can read and write a 13.56MHz tag with this module or implement point to point data exchange with two NFCs. Grove NFC is designed to use I2C or UART communication protocols, and UART is the default mode. In addition, we assign an independent PCB antenna which can easily stretch out of any enclosure you use, leaving more room for you to design the exterior of your project.

Specification

• Working Voltage: 3.3V
• Working Current: Static Mode: 73mA, Write/Read Mode: 83mA
• Support host interface: I2C, UART(default).
• Serve for contactless communication at 13.56MHz.
• Support ISO14443 Type A and Type B protocols.
• Max operating distance for detecting NFC tags is 28mm depending on current antenna size.
• Support P2P communication.
• Dimensions: 25.43mm x 20.35mm

Part List

• Grove – NFC x1
• NFC Antenna x1
• IPX connect wire – 120mm x1
• 24AWG Grove Cable – 4P-4P-2.0-200mm x1