ESP32 MFRC522 Write / Read 讀取與寫入資料 Sector / Block + Node-Red UI控制Sector / Block 讀寫

 ESP32 MFRC522 Write / Read 讀取與寫入資料 Sector / Block  + Node-Red UI控制Sector / Block 讀寫

每個區段的區塊3也叫做控制區塊（Sector Trailer, Trailer Block或Security Block），如果把上圖的資料結構想像成16層大樓，控制區塊相當於每一層樓的密碼鎖；進、出該層樓必須先輸入正確的密碼，而且每層樓都有兩組密碼。

控制區塊包含金鑰A和金鑰B兩組密碼（各6位元組），以及存取控制位元（4位元組，但僅使用前3位元組）

RFID卡內部有1KB的EEPROM記憶體，為了妥善管理並達到一卡多用的功能，這個記憶體空間被劃分成16個區段（sector），每個區段有4個區塊（block），區段0的區塊0包含卡片的唯一識別碼（UID，也稱為「製造商識別碼」，Manufacturer Code）。

參考 https://swf.com.tw/?p=941

/*

MFRC522物件.PCD_Authenticate()：驗證金鑰，相當於比對輸入密碼和卡片裡的密碼，唯通過驗證才能存取區段資料。

MFRC522物件.GetStatusCodeName()：取得狀態碼的名稱

MFRC522物件.MIFARE_Read()：讀取指定區塊的內容

MFRC522物件.MIFARE_Write()：在指定區塊寫入資料

MFRC522物件.PICC_DumpMifareClassicSectorToSerial()：在序列埠監控視窗顯示指定的區段內容

*/

//wifi &  MQTT

#include <WiFi.h>             //定義Wifi 程式庫

#include <PubSubClient.h>      //定義MQTT Pub發行 Sub 訂閱 程式庫

//RC522 SPI Mode

#include <SPI.h>          //定義MFRC522 RFID read 與 ESP32 介面

#include <MFRC522.h>      //定義MFRC522 RFID read程式庫

#define RST_PIN    27     // Reset腳

#define SS_PIN     5     // 晶片選擇腳

//GPIO 2 D1 Build in LED

#define LED 2                //定義LED接腳

//定義MFRC522 RFID read 與 ESP32 介面 接腳連接Pin assign

/* Wiring RFID RC522 module  

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

GND     = GND   3.3V    = 3.3V

The following table shows the typical pin layout used:

 *             MFRC522      ESP32    

 *             Reader/PCD            

 * Signal      Pin          Pin        

 * -----------------------------------

 * RST/Reset   RST          GPIO27  

 * SPI SS      SDA(SS)      GPIO5    

 * SPI MOSI    MOSI         GPIO23    

 * SPI MISO    MISO         GPIO19    

 * SPI SCK     SCK          GPIO18    

 *

[1] (1, 2) Configurable, typically defined as RST_PIN in sketch/program.

[2] (1, 2) Configurable, typically defined as SS_PIN in sketch/program.

[3] The SDA pin might be labeled SS on some/older MFRC522 boards

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

*/

// WiFi SSID password , SSID 和密碼進行Wi-Fi 設定

//const char *ssid = "TOTOLINK_A3002MU"; // Enter your Wi-Fi name

//const char *password = "24063173";  // Enter Wi-Fi password

const char *ssid = "dlink-103A"; // Enter your Wi-Fi name

const char *password = "bdcce12882";  // Enter Wi-Fi password

// MQTT Broker

const char *mqtt_broker = "broker.hivemq.com"; //broker.mqtt-dashboard.com

const char *topic1 = "alex9ufo/RFID/read";

const char *topic2 = "alex9ufo/RFID/write";

const char *topic3 = "alex9ufo/RFID/back";

const char *mqtt_username = "alex9ufo";

const char *mqtt_password = "public";

const int mqtt_port = 1883;

WiFiClient espClient;

PubSubClient client(espClient);

//定義 MQTT 發行及訂閱需要的變數

String json = "";

char jsonChar[50];  //client.publish

bool toggle=false;

bool WR_flag=false;

bool RD_flag=false;

String text="";

MFRC522 mfrc522(SS_PIN, RST_PIN);    // 建立MFRC522物件

MFRC522::MIFARE_Key key;  // 儲存金鑰

byte sector = 0;   // 指定讀寫的「區段」，可能值:0~15

byte block = 0;     // 指定讀寫的「區塊」，可能值:0~3

byte blockData[16] = "Keep Hacking!";   // 最多可存入16個字元

// 若要清除區塊內容，請寫入16個 0

//byte blockData[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

// 暫存讀取區塊內容的陣列，MIFARE_Read()方法要求至少要18位元組空間，來存放16位元組。

byte buffer[18];

MFRC522::StatusCode status;

//====================================================  

/*** 位元組陣列轉儲為串列的十六進位值

 * 這個副程式把讀取到的UID，用16進位顯示出來

*/

void dump_byte_array(byte *buffer, byte bufferSize) {

  for (byte i = 0; i < bufferSize; i++) {

    Serial.print(buffer[i] < 0x10 ? " 0" : " ");

    Serial.print(buffer[i], HEX);

  }

}

//===========================================================

String printHex(byte *buffer, byte bufferSize) {

      String id = "";

      for (byte i = 0; i < bufferSize; i++) {

        id += buffer[i] < 0x10 ? "0" : "";

        id += String(buffer[i], HEX);

        id +=" ";

      }

      return id;

    }

//===========================================================

void writeBlock(byte _sector, byte _block, byte _blockData[]) {

  if (_sector < 0 || _sector > 15 || _block < 0 || _block > 3) {

    // 顯示「區段或區塊碼錯誤」，然後結束函式。

    Serial.println(F("Wrong sector or block number."));

    return;

  }

  if (_sector == 0 && _block == 0) {

    // 顯示「第一個區塊只能讀取」，然後結束函式。

    Serial.println(F("First block is read-only."));

    return;

  }

  byte blockNum = _sector * 4 + _block;  // 計算區塊的實際編號（0~63）

  byte trailerBlock = _sector * 4 + 3;   // 控制區塊編號

  // 驗證金鑰

  status = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key, &(mfrc522.uid));

  // 若未通過驗證…

  if (status != MFRC522::STATUS_OK) {

    // 顯示錯誤訊息

    Serial.print(F("PCD_Authenticate() failed: "));

    Serial.println(mfrc522.GetStatusCodeName(status));

    return;

  }

  // 在指定區塊寫入16位元組資料

  status = (MFRC522::StatusCode) mfrc522.MIFARE_Write(blockNum, _blockData, 16);

  // 若寫入不成功…

  if (status != MFRC522::STATUS_OK) {

    // 顯示錯誤訊息

    Serial.print(F("MIFARE_Write() failed: "));

    Serial.println(mfrc522.GetStatusCodeName(status));

    return;

  }

  // 顯示「寫入成功！」

  Serial.println(F("Data was written."));

  client.publish(topic3,"Data was written.");

}

//===========================================================

void readBlock(byte _sector, byte _block, byte _blockData[])  {

  if (_sector < 0 || _sector > 15 || _block < 0 || _block > 3) {

    // 顯示「區段或區塊碼錯誤」，然後結束函式。

    Serial.println(F("Wrong sector or block number."));

    return;

  }

  byte blockNum = _sector * 4 + _block;  // 計算區塊的實際編號（0~63）

  byte trailerBlock = _sector * 4 + 3;   // 控制區塊編號

  // 驗證金鑰

  status = (MFRC522::StatusCode) mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key, &(mfrc522.uid));

  // 若未通過驗證…

  if (status != MFRC522::STATUS_OK) {

    // 顯示錯誤訊息

    Serial.print(F("PCD_Authenticate() failed: "));

    Serial.println(mfrc522.GetStatusCodeName(status));

    return;

  }

  byte buffersize = 18;

  status = (MFRC522::StatusCode) mfrc522.MIFARE_Read(blockNum, _blockData, &buffersize);

  // 若讀取不成功…

  if (status != MFRC522::STATUS_OK) {

    // 顯示錯誤訊息

    Serial.print(F("MIFARE_read() failed: "));

    Serial.println(mfrc522.GetStatusCodeName(status));

    return;

  }

  // 顯示「讀取成功！」

  Serial.println(F("Data was read."));

  client.publish(topic3,"Data was read.");

}

//===========================================================

//副程式  setup wifi

void setup_wifi() {

  delay(10);

  // We start by connecting to a WiFi network

  Serial.println();

  Serial.print("Connecting to ");

  Serial.println(ssid);     //print ssid

  WiFi.begin(ssid, password);  //初始化WiFi 函式庫並回傳目前的網路狀態

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }   //假設 wifi 未連接 show ………

  Serial.println("");

  Serial.println("WiFi connected");

  Serial.println("IP address: ");

  Serial.println(WiFi.localIP());

}    

//===========================================================

// 接收MQTT主題後呼叫運行程式

//===========================================================

void callback(char *topic, byte *payload, unsigned int length) {

    Serial.print("Message arrived in topic: ");

    Serial.println(topic);

    String topic1=topic;

    Serial.print("Message: ");

    String message;

   //將接收資料轉成字串以利後續判斷

    for (int i = 0; i < length; i++) {

        message += (char) payload[i];  // Convert *byte to string

    }

    Serial.println(message);

    String  sec1;

    String  blk1;

    String  text1;

    toggle = false;

    sec1=message.substring(0,2);

    blk1=message.substring(3,5);

    text=message.substring(6);

    sector = sec1.toInt();

    block  = blk1.toInt();

    if (topic1.substring(14,18) == "read") {

      String  sec1=message.substring(0,2);

      String  blk1=message.substring(3,5);

      //String  text1=message.subString(6);

      sector = sec1.toInt();

      block  = blk1.toInt();  

      Serial.print(sec1);

      Serial.print(blk1);

      toggle=true;

      RD_flag=true;

    }

    if (topic1.substring(14,19) == "write") {

      String  sec1=message.substring(0,2);

      String  blk1=message.substring(3,5);

      text=message.substring(6);

      text.getBytes(blockData,text.length()+1);

      Serial.print(sec1);

      Serial.print(blk1);

      Serial.println(text);  

      sector = sec1.toInt();

      block  = blk1.toInt();

      toggle=true;

      WR_flag=true;

    }

    Serial.println();

    Serial.println("-------callback-----------");

}

//===========================================================

//  若目前沒有和伺服器相連，則反覆執行直到連結成功

void reconnect() {

  // Loop until we're reconnected

  while (!client.connected()) {

    Serial.print("Attempting MQTT connection...");

    // Attempt to connect

    if (client.connect("esp32-client-")) {

      Serial.println("connected");

      // Subscribe

      client.subscribe("alex9ufo/RFID/read");

      client.subscribe("alex9ufo/RFID/write");      

    } else {

      Serial.print("failed, rc=");

      Serial.print(client.state());

      Serial.println(" try again in 5 seconds");

      // Wait 5 seconds before retrying

      delay(5000);

      if (WiFi.status() != WL_CONNECTED)  {

        Serial.println("Reconnecting to WiFi...");

        WiFi.disconnect();

        WiFi.reconnect();

      }

    }

  }

}

//===========================================================

void setup() {

  Serial.begin(115200);

  SPI.begin();               // 初始化SPI介面

  mfrc522.PCD_Init();        // 初始化MFRC522卡片

  //======================================================

  // Connecting to a WiFi network

  setup_wifi();

  // Setting LED pin as output

  pinMode(LED, OUTPUT);

  digitalWrite(LED, LOW);  // Turn off the LED initially

  Serial.println(F("Please scan MIFARE Classic card..."));

  // 準備金鑰（用於key A和key B），出廠預設為6組 0xFF。

  for (byte i = 0; i < 6; i++) {

    key.keyByte[i] = 0xFF;

  }

  Serial.println(F("掃描卡片開始進行讀或者寫"));

  Serial.print(F("使用A和B作為KEY"));

 

  dump_byte_array(key.keyByte, MFRC522::MF_KEY_SIZE);

 

  Serial.println();

  Serial.println(F("注意，會把資料寫入到卡片 在 sector # "));

   

  Serial.println(F("Ready!"));

  Serial.println(F("==================================================="));

  Serial.println("Tap an RFID/NFC tag on the RFID-RC522 reader");

  // Connecting to an MQTT broker

  client.setServer(mqtt_broker, mqtt_port);

  client.setCallback(callback);

  while (!client.connected()) {

        String client_id = "esp32-client-";

        client_id += String(WiFi.macAddress());

        Serial.printf("The client %s connects to the public MQTT broker\n", client_id.c_str());

        if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {

            Serial.println("Public HiveMQ MQTT broker (broker.mqtt-dashboard.com) connected");

        } else {

            Serial.print("Failed with state ");

            Serial.print(client.state());

            delay(2000);

        }

  }

  // MQTT　Publish and subscribe

  client.subscribe(topic1);

  client.subscribe(topic2);

}

//===========================================================

void loop() {

  // 查看是否感應到卡片

  if ( ! mfrc522.PICC_IsNewCardPresent()) {

    return;  // 退回loop迴圈的開頭

  }

  // 選取一張卡片

  if ( ! mfrc522.PICC_ReadCardSerial()) {  // 若傳回1，代表已讀取到卡片的ID

    return;

  }

  if ((sector>0) ||(block>0)) {

    if (WR_flag==true){

      writeBlock(sector, block, blockData);  // 區段編號、區塊編號、包含寫入資料的陣列

      readBlock(sector, block, buffer);      // 區段編號、區塊編號、存放讀取資料的陣列

      Serial.print("sector=");

      Serial.print(sector,DEC);

      Serial.print(", block=");

      Serial.println(block,DEC);

      Serial.print(F("Read block: "));        // 顯示儲存讀取資料的陣列元素值

      for (byte i = 0 ; i < 16 ; i++) {

        Serial.write (buffer[i]);

      }

      Serial.println();

      //========publish topic3 =========

      String json ="Read data : ";

      String str=String((char *)buffer);

      json =json + str;

      json.trim();

      //json.toCharArray(jsonChar, json.length()+1);

      json.toCharArray(jsonChar,28+1);

      client.publish(topic3,jsonChar);

      WR_flag==false;

    }

   

   

    if (RD_flag==true){

      readBlock(sector, block, buffer);      // 區段編號、區塊編號、存放讀取資料的陣列

      Serial.print("sector=");

      Serial.print(sector,DEC);

      Serial.print(", block=");

      Serial.println(block,DEC);

      Serial.print(F("Read block: "));        // 顯示儲存讀取資料的陣列元素值

      for (byte i = 0 ; i <18 ; i++) {

        Serial.write (buffer[i]);

      }

      Serial.println();

      //========publish topic3 =========

      String json ="Read data : ";

      String str=String((char *)buffer);

      json =json + str;

      json.trim();

      //json.toCharArray(jsonChar, json.length()+1);

      json.toCharArray(jsonChar,28+1);

      client.publish(topic3,jsonChar);

      RD_flag==false;

    }

  }

  else

  {

    Serial.print(F("Card UID:"));

    dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size); // 顯示卡片的UID

    Serial.println();

    Serial.print(F("PICC type: "));

    MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);

    Serial.println(mfrc522.PICC_GetTypeName(piccType));  //顯示卡片的類型  

   

    String json =("Card UID: ");

    json = json + printHex(mfrc522.uid.uidByte, mfrc522.uid.size);

    json.trim();

    json = json +(" , PICC type: ");

    json = json + String(mfrc522.PICC_GetTypeName(piccType));

    json.trim();

    ///json.toUpperCase();

    // Convert JSON string to character array

    json.toCharArray(jsonChar, json.length()+1);

    client.publish(topic3,jsonChar);

    // Dump debug info about the card; PICC_HaltA() is automatically called

    mfrc522.PICC_DumpToSerial(&(mfrc522.uid));

  }

 

  // 令卡片進入停止狀態

  mfrc522.PICC_HaltA();

  mfrc522.PCD_StopCrypto1(); // stop encryption on PCD

  Serial.println("RFID Halt");

 if (!client.connected()) { //假設未連接的處理程序

      reconnect();

      Serial.print(" client not connected  reconnect ");

      delay(200);

    }

  client.loop();

// if WiFi is down, try reconnecting

  if (WiFi.status() != WL_CONNECTED) {

    Serial.print(millis());

    Serial.println("Reconnecting to WiFi...");

    WiFi.disconnect();

    WiFi.reconnect();

    client.setCallback(callback);

  }

}

load:0x3fff0030,len:1416

load:0x40078000,len:14804

load:0x40080400,len:4

load:0x40080404,len:3356

entry 0x4008059c

Connecting to dlink-103A

.

WiFi connected

IP address: 

192.168.0.100

Please scan MIFARE Classic card...

掃描卡片開始進行讀或者寫

使用A和B作為KEY FF FF FF FF FF FF

注意，會把資料寫入到卡片 在 sector # 

Ready!

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

Tap an RFID/NFC tag on the RFID-RC522 reader

The client esp32-client-24:6F:28:A9:83:F4 connects to the public MQTT broker

Public HiveMQ MQTT broker (broker.mqtt-dashboard.com) connected

Card UID: 86 D5 EA 6A

PICC type: MIFARE 1KB

Card UID: 86 D5 EA 6A

Card SAK: 08

PICC type: MIFARE 1KB

Sector Block   0  1  2  3   4  5  6  7   8  9 10 11  12 13 14 15  AccessBits

  15     63   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ] 

         62   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 35  [ 0 0 0 ] 

         61   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 31  [ 0 0 0 ] 

         60   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 35  [ 0 0 0 ] 

RFID Halt

Message arrived in topic: alex9ufo/RFID/read

Message: 05,01

0501

-------callback-----------

Data was read.

sector=5, block=1

Read block: alex9ufo testing:

RFID Halt

Data was read.

sector=5, block=1

Read block: alex9ufo testing:

RFID Halt

RFID Halt

Card UID: 86 D5 EA 6A

PICC type: MIFARE 1KB

Card UID: 86 D5 EA 6A

Card SAK: 08

PICC type: MIFARE 1KB

Sector Block   0  1  2  3   4  5  6  7   8  9 10 11  12 13 14 15  AccessBits

  15     63   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         62   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 35  [ 0 0 0 ]

         61   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 31  [ 0 0 0 ]

         60   61 6C 65 78  39 75 66 6F  74 65 73 74  69 6E 67 35  [ 0 0 0 ]

  14     59   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         58   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         57   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         56   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

  13     55   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         54   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         53   4B 65 65 70  20 48 61 63  6B 69 6E 67  21 00 00 00  [ 0 0 0 ]

         52   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

  12     51   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         50   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         49   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         48   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

  11     47   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         46   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         45   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         44   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

  10     43   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         42   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         41   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         40   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   9     39   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         38   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         37   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         36   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   8     35   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         34   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         33   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         32   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   7     31   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         30   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         29   74 65 73 74  00 48 61 63  6B 69 6E 67  21 00 00 00  [ 0 0 0 ]

         28   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   6     27   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         26   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         25   61 6C 65 78  39 75 66 6F  20 74 65 73  74 69 6E 67  [ 0 0 0 ]

         24   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   5     23   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         22   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         21   61 6C 65 78  39 75 66 6F  20 74 65 73  74 69 6E 67  [ 0 0 0 ]

         20   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   4     19   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         18   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         17   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         16   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   3     15   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         14   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         13   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

         12   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   2     11   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

         10   2B 39 32 33  30 30 34 34  34 37 37 37  37 20 20 20  [ 0 0 0 ]

          9   32 38 2D 30  39 2D 31 39  38 39 20 20  20 20 20 20  [ 0 0 0 ]

          8   4A 68 6F 6E  20 41 62 72  61 68 75 6D  20 20 20 20  [ 0 0 0 ]

   1      7   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

          6   41 6E 74 68  6F 6E 79 20  20 20 20 20  20 20 20 20  [ 0 0 0 ]

          5   20 20 20 20  20 20 20 20  20 20 20 20  20 20 00 00  [ 0 0 0 ]

          4   01 02 03 04  05 06 07 08  00 00 00 00  00 00 00 00  [ 0 0 0 ]

   0      3   00 00 00 00  00 00 FF 07  80 69 FF FF  FF FF FF FF  [ 0 0 1 ]

          2   61 6C 65 78  39 75 66 6F  20 74 65 73  74 69 6E 67  [ 0 0 0 ]

          1   61 6C 65 78  20 20 20 20  20 20 20 20  20 20 20 20  [ 0 0 0 ]

          0   86 D5 EA 6A  D3 08 04 00  62 63 64 65  66 67 68 69  [ 0 0 0 ]

NODE-RED程式

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