2023年7月28日 星期五

實驗 ESP32 + MFRC522 RFID + SQLite + Node-RED 新增模式 自動比對模式

實驗 ESP32 + MFRC522 RFID + SQLite + Node-RED 新增模式 自動比對模式





 




#include <WiFi.h>
#include <PubSubClient.h>
#include <SPI.h>
#include <MFRC522.h>
// GPIO 2 D1
#define LED 2
/* Wiring RFID RC522 module
=============================================================================
GND     = GND   3.3V    = 3.3V
The following table shows the typical pin layout used:
 *             MFRC522      ESP32     Arduino       Arduino   Arduino    Arduino          Arduino
 *             Reader/PCD             Uno/101       Mega      Nano v3    Leonardo/Micro   Pro Micro
 * Signal      Pin          Pin       Pin           Pin       Pin        Pin              Pin
 * -----------------------------------------------------------------------------------------
 * RST/Reset   RST          GPIO27    9             5         D9         RESET/ICSP-5     RST
 * SPI SS      SDA(SS)      GPIO5     10            53        D10        10               10
 * SPI MOSI    MOSI         GPIO23    11 / ICSP-4   51        D11        ICSP-4           16
 * SPI MISO    MISO         GPIO19    12 / ICSP-1   50        D12        ICSP-1           14
 * SPI SCK     SCK          GPIO18    13 / ICSP-3   52        D13        ICSP-3           15
 *
[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
=============================================================================
*/

#define SS_PIN  5  // ESP32 pin GIOP5
#define RST_PIN 27 // ESP32 pin GIOP27


// WiFi
const char *ssid = "alex9ufo"; // Enter your Wi-Fi name
const char *password = "alex9981";  // Enter Wi-Fi password

// MQTT Broker
const char *mqtt_broker = "broker.mqtt-dashboard.com";
const char *topic1 = "alex9ufo/esp32/led";
const char *topic2 = "alex9ufo/esp32/RFID";
const char *topic = "alex9ufo/esp32/Starting";
const char *topic3 = "alex9ufo/esp32/led_status";



const char *mqtt_username = "alex9ufo";
const char *mqtt_password = "public";
const int mqtt_port = 1883;

bool ledState = false;
bool atwork = false;

WiFiClient espClient;
PubSubClient client(espClient);
MFRC522 rfid(SS_PIN, RST_PIN); // Create MFRC522 instance

long lastMsg = 0;
long lastMsg1= 0;

char msg[50];
String json = "";
bool Flash = false;  //true
bool Timer = false;  //true
bool Send = false;  //true
int Count= 0;

char jsonChar1[100];  //client.publish("alex9ufo/Esp32/RFID"
//===========================================================
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);
      }
      return id;
    }
//===========================================================
void setup_wifi() {
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}    
//===========================================================
void setup() {
    // Set software serial baud to 115200;
    Serial.begin(115200);
    delay(1000); // Delay for stability
    //======================================================
    // Connecting to a WiFi network
    setup_wifi();
    // Setting LED pin as output
    pinMode(LED, OUTPUT);
    digitalWrite(LED, LOW);  // Turn off the LED initially
    //======================================================
    SPI.begin();           // Init SPI bus
    rfid.PCD_Init();    // Init MFRC522

    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);
        }
    }

    // Publish and subscribe
    client.subscribe(topic1);
    client.publish(topic,"ESP32 at work");
}
//===========================================================
void callback(char *topic, byte *payload, unsigned int length) {
    Serial.print("Message arrived in topic: ");
    Serial.println(topic);
    Serial.print("Message: ");
    String message;
    for (int i = 0; i < length; i++) {
        message += (char) payload[i];  // Convert *byte to string
    }
    Serial.print(message);
    if (message == "on" && !ledState) {
        digitalWrite(LED, HIGH);  // Turn on the LED
        ledState = true;  //ledState = ture HIGH
        Flash = false;
        Timer = false;
        json ="ON";
        Send = true ;
    }
    if (message == "off" && ledState) {
        digitalWrite(LED, LOW); // Turn off the LED
        ledState = false; //ledState = false LOW
        Flash = false;
        Timer = false;
        json ="OFF";
        Send = true ;

    }
    if (message == "flash" ) {
        digitalWrite(LED, LOW); // Turn off the LED
        Flash = true;
        Timer = false;
        json ="FLASH";
        Send = true ;        

    }
    if (message == "timer" ) {
        digitalWrite(LED, LOW); // Turn off the LED
        Flash = false;
        Timer = true;
        json ="TIMER";
        Send = true ;
        Count= 11;
    }

    if (message == "toggle" ) {
        digitalWrite(LED, !digitalRead(LED));   // Turn the LED toggle
        if (digitalRead(LED))
            ledState = true;
        else
            ledState = false;
       
        Flash = false;
        Timer = false;
        json ="TOGGLE";
        Send = true ;        
    }

    Serial.println();
    Serial.println("-----------------------");
}
//===========================================================
void loop() {
    client.loop();
    delay(100); // Delay for a short period in each loop iteration
    if (Flash){
        digitalWrite(LED, !digitalRead(LED));
        delay(500);
        if (digitalRead(LED))
            ledState = true;
        else
            ledState = false;
    } //(Flash)
       
    if (Timer) {
        digitalWrite(LED, HIGH);
        delay(500);
        if (digitalRead(LED))
            ledState = true;
        else
            ledState = false;

        Count=Count-1;
        if (Count == 0 ){
            Timer=false;
            digitalWrite(LED, LOW);
            ledState = false;
        }
    } //(Timer)
   
    if (client.connected()) {        
        if (Send) {
          // Convert JSON string to character array
          json.toCharArray(jsonChar1, json.length()+1);
          Serial.print("Publish message: ");
          Serial.println(json);
          // Publish JSON character array to MQTT topic
          client.publish(topic3,jsonChar1);
        }
        Send = false;    
    }

    long now = millis();
    long now1 = millis();
    if (now1 - lastMsg1 > 80000) {
        lastMsg1 = now1;
        if (atwork) {
            client.publish(topic,"ESP32 at work");
            atwork=false;
        } else {
            client.publish(topic,"             ");
            atwork=true;
        }
     }
     
    if (now - lastMsg > 5000) {
      Serial.println("Reading RFIF card");
      lastMsg = now;
      if (rfid.PICC_IsNewCardPresent()) { // new tag is available
        if (rfid.PICC_ReadCardSerial()) { // NUID has been readed
          MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
          Serial.print("RFID/NFC Tag Type: ");
          Serial.println(rfid.PICC_GetTypeName(piccType));

          // print UID in Serial Monitor in the hex format
          Serial.print("UID:");
          for (int i = 0; i < rfid.uid.size; i++) {
            Serial.print(rfid.uid.uidByte[i] < 0x10 ? " 0" : " ");
            Serial.print(rfid.uid.uidByte[i], HEX);
          }
          Serial.println();

          String json = printHex(rfid.uid.uidByte, rfid.uid.size);
          // Convert JSON string to character array
          json.toCharArray(jsonChar1, json.length()+1);
   
          if  (client.connected()) {
            Serial.print("Publish message: ");
            Serial.println(json);
            // Publish JSON character array to MQTT topic
            client.publish(topic2,jsonChar1);
          }    
          rfid.PICC_HaltA(); // halt PICC
          rfid.PCD_StopCrypto1(); // stop encryption on PCD
         
         
        }
      }
       
  }

}
//===========================================================

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DATABASE","func":"\n\n//CREATE TABLE \"RFIDtable\" (\n//\t\"id\"\tINT NOT NULL,\n//  \"uidname\"  TEXT,\n//  \"currentdate\" DATE, \n//  \"currenttime\" TIME\n//\tPRIMARY KEY(\"id\")\n//);\nmsg.topic = \"CREATE TABLE RFIDtable(id INTEGER PRIMARY KEY AUTOINCREMENT, uidname TEXT, currentdate DATE, currenttime TIME)\";\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":300,"y":420,"wires":[["68645501e5220a45"]]},{"id":"bf962fae1f621539","type":"debug","z":"e00ab2f59ea60e48","name":"debug","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":790,"y":420,"wires":[]},{"id":"ec1d54d7d41770f1","type":"function","z":"e00ab2f59ea60e48","name":"INSERT","func":"var Today = new Date();\nvar yyyy = Today.getFullYear(); //年\nvar MM = Today.getMonth()+1;    //月\nvar dd = Today.getDate();       //日\nvar h = Today.getHours();       //時\nvar m = Today.getMinutes();     //分\nvar s = Today.getSeconds();     //秒\nif(MM<10)\n{\n   MM = '0'+MM;\n}\n\nif(dd<10)\n{\n   dd = '0'+dd;\n}\n\nif(h<10)\n{\n   h = '0'+h;\n}\n\nif(m<10)\n{\n  m = '0' + m;\n}\n\nif(s<10)\n{\n  s = '0' + s;\n}\nvar var_date = yyyy+'/'+MM+'/'+dd;\nvar var_time = h+':'+m+':'+s;\n\nvar myRFID = flow.get('uid_temp');\n\n\nmsg.topic = \"INSERT INTO RFIDtable ( uidname , currentdate, currenttime ) VALUES ($myRFID,  $var_date ,  $var_time ) \" ;\nmsg.payload = [myRFID, var_date , var_time ]\nreturn msg;\n\n//CREATE TABLE \"RFIDtable\" (\n//\t\"id\"\tINT NOT NULL,\n//  \"uidname\"  TEXT,\n//  \"currentdate\" DATE, \n//  \"currenttime\" TIME\n//\tPRIMARY KEY(\"id\")\n//);","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":320,"y":460,"wires":[["9f604fc4cad58ee9","68645501e5220a45"]]},{"id":"9dc987951e71577d","type":"function","z":"e00ab2f59ea60e48","name":"刪除所有資料","func":"//DELETE from RFIDtable\nmsg.topic = \"DELETE from RFIDtable\";\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":320,"y":980,"wires":[["11c361088aa44a65"]]},{"id":"11c361088aa44a65","type":"sqlite","z":"e00ab2f59ea60e48","mydb":"dd7f8134e015a1cb","sqlquery":"msg.topic","sql":"","name":"My_RFID_database","x":540,"y":980,"wires":[["1420491c3111a4b9"]]},{"id":"5d4b1f1cbc6fce11","type":"ui_button","z":"e00ab2f59ea60e48","name":"","group":"85b1efd8d6d7c0dd","order":23,"width":3,"height":1,"passthru":false,"label":"刪除資料庫","tooltip":"","color":"","bgcolor":"","className":"","icon":"","payload":"刪除資料庫","payloadType":"str","topic":"topic","topicType":"msg","x":90,"y":1060,"wires":[["0015e46940ed050b","e2d7e93ee5805748"]]},{"id":"0015e46940ed050b","type":"function","z":"e00ab2f59ea60e48","name":"刪除資料庫","func":"//DROP TABLE RFIDtable\nmsg.topic = \"DROP TABLE RFIDtable\";\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":310,"y":1060,"wires":[["11c361088aa44a65"]]},{"id":"1d9ee8b4e6190689","type":"ui_template","z":"e00ab2f59ea60e48","group":"85b1efd8d6d7c0dd","name":"","order":13,"width":12,"height":8,"format":"<table style=\"width:100%\">\n  <tr>\n    <th>idex</th> \n    <th>database_id</th>\n    <th>UID </th>\n    <th>Date</th>\n    <th>Times</th>\n  </tr>\n  \n  <tr ng-repeat=\"x in msg.payload | limitTo:50\">\n    <td>{{$index}}</td>\n    <td>{{msg.payload[$index].id}}</td>\n    <td>{{msg.payload[$index].uidname}}</td>\n    <td>{{msg.payload[$index].currentdate}}</td>\n    <td>{{msg.payload[$index].currenttime}}</td>\n  </tr>\n</table>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":960,"y":1140,"wires":[[]]},{"id":"1420491c3111a4b9","type":"debug","z":"e00ab2f59ea60e48","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":730,"y":980,"wires":[]},{"id":"476e761995ad05a1","type":"function","z":"e00ab2f59ea60e48","name":"檢視資料","func":"\n//CREATE TABLE \"RFIDtable\" (\n//\t\"id\"\tINT NOT NULL,\n//  \"uidname\"  TEXT,\n//  \"currentdate\" DATE, \n//  \"currenttime\" TIME\n//\tPRIMARY KEY(\"id\")\n//);\n\n//SELECT * FROM RFIDtable ORDER BY  id DESC LIMIT 50;\n\nmsg.topic = \"SELECT * FROM RFIDtable ORDER BY id DESC LIMIT 50\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":560,"y":740,"wires":[["ee4f554f4ec77f7e"]]},{"id":"ee4f554f4ec77f7e","type":"sqlite","z":"e00ab2f59ea60e48","mydb":"dd7f8134e015a1cb","sqlquery":"msg.topic","sql":"","name":"My_RFID_database","x":780.9005737304688,"y":873.5454711914062,"wires":[["1d9ee8b4e6190689"]]},{"id":"3a85e89d3ef728a4","type":"function","z":"e00ab2f59ea60e48","name":"SELECT ALL","func":"var del_idtemp=msg.payload;\nflow.set(\"idtemp\", del_idtemp);\n\nmsg.topic = \"SELECT * FROM RFIDtable \";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":310,"y":900,"wires":[["11c361088aa44a65","6f162682a89dbd5d"]]},{"id":"3c17f4cb6a2d344c","type":"function","z":"e00ab2f59ea60e48","name":"確認 刪除","func":"var del_id = flow.get(\"idtemp\");\n\n\nmsg.topic = \"DELETE FROM RFIDtable WHERE id= ($del_id) \" ;\nmsg.payload = [del_id]\nreturn msg;\n","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":300,"y":800,"wires":[["caaf5693e66f95e0"]]},{"id":"2fde96e5cbd18edf","type":"ui_numeric","z":"e00ab2f59ea60e48","name":"","label":"刪除的database_id","tooltip":"","group":"85b1efd8d6d7c0dd","order":26,"width":3,"height":1,"wrap":false,"passthru":true,"topic":"topic","topicType":"msg","format":"{{value}}","min":"1","max":"100","step":1,"className":"","x":110,"y":900,"wires":[["3a85e89d3ef728a4","4886988bd55a3ed0"]]},{"id":"caaf5693e66f95e0","type":"sqlite","z":"e00ab2f59ea60e48","mydb":"dd7f8134e015a1cb","sqlquery":"msg.topic","sql":"DELETE FROM dhtreadings WHERE id =  VALUES ($theid)","name":"My_RFID_database","x":500,"y":800,"wires":[["476e761995ad05a1"]]},{"id":"152668e1be54de6a","type":"ui_button","z":"e00ab2f59ea60e48","name":"","group":"85b1efd8d6d7c0dd","order":24,"width":3,"height":1,"passthru":false,"label":"刪除一筆資料","tooltip":"","color":"","bgcolor":"","className":"","icon":"","payload":"刪除一筆資料","payloadType":"str","topic":"topic","topicType":"msg","x":100,"y":800,"wires":[["3c17f4cb6a2d344c","46fe8b21023dbd8f"]]},{"id":"6f162682a89dbd5d","type":"debug","z":"e00ab2f59ea60e48","name":"debug 122","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":510,"y":900,"wires":[]},{"id":"03942cf08ba0659d","type":"mqtt in","z":"e00ab2f59ea60e48","name":"新增 RFID","topic":"alex9ufo/esp32/RFID","qos":"2","datatype":"auto-detect","broker":"841df58d.ee5e98","nl":false,"rap":true,"rh":0,"inputs":0,"x":80,"y":460,"wires":[["80332a8adf5e0a72"]]},{"id":"9f604fc4cad58ee9","type":"debug","z":"e00ab2f59ea60e48","name":"debug 123","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":510,"y":460,"wires":[]},{"id":"d874433685ecdedf","type":"ui_text_input","z":"e00ab2f59ea60e48","name":"","label":"新增一筆資料","tooltip":"","group":"85b1efd8d6d7c0dd","order":28,"width":3,"height":1,"passthru":true,"mode":"text","delay":300,"topic":"topic","sendOnBlur":true,"className":"","topicType":"msg","x":320,"y":540,"wires":[[]]},{"id":"d8cb65223db72c0f","type":"ui_audio","z":"e00ab2f59ea60e48","name":"","group":"85b1efd8d6d7c0dd","voice":"Microsoft Hanhan - Chinese (Traditional, 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