alex9ufo 聰明人求知心切: 實驗2-2 ESP32 RFID (利用ESP32 multitasking 32-bit LX6 microprocessors: core 0 and core 1 改寫Arduino Code )

實驗2-2 ESP32 RFID (利用ESP32 multitasking 32-bit LX6 microprocessors: core 0 and core 1 改寫Arduino Code )

The ESP32 comes with 2 Xtensa 32-bit LX6 microprocessors: core 0 and core 1. So, it is dual core. When we run code on Arduino IDE, by default, it runs on core 1. In this post we’ll show you how to run code on the ESP32 second core by creating tasks. You can run pieces of code simultaneously on both cores, and make your ESP32 multitasking.

修改成相容於 PN532的格式 (RC522/PN532)相容

//===========================================================
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;
    }
//===========================================================

程式如下

//wifi &  MQTT
#include <WiFi.h>
#include <PubSubClient.h>

//RC522 SPI Mode 
#include <SPI.h>
#include <MFRC522.h>

//GPIO 2 D1 Build in LED
#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[50];  //client.publish("alex9ufo/Esp32/RFID"
//宣告任務Task1
TaskHandle_t Task1;

// Wifi reconnect
unsigned long previousMillis = 0;
unsigned long interval = 30000;
//===========================================================
//任務1副程式Task1_senddata
void Task1_senddata(void * pvParameters ) {
  //無窮迴圈
  for (;;) {
    //偵測上傳旗標是否為true
    Serial.println("Reading RFID tag");
    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));
        String rfidno="";
        // 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);
        json.trim();
        json.toUpperCase();
        // 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
        }  
        else 
        {
          Serial.print("MQTT not connected ");
        }
      
      }
    } 


    else   
    {
      // PN532 probably timed out waiting for a card
      Serial.println("Timed out waiting for a card");
    }      
    //Task1休息，delay(X)不可省略
    delay(1000);
  }
}
//===========================================================

//===========================================================
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 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 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 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/esp32/led");
      client.subscribe("alex9ufo/esp32/RFID");      
    } 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 LED_Message() {
    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;    
    } 
    else 
    {
      if (WiFi.status() != WL_CONNECTED)  {
        Serial.println("Reconnecting to WiFi...");
        WiFi.disconnect();
        WiFi.reconnect();
      }
    }

}

//===========================================================
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");

    //在核心0啟動任務1
    xTaskCreatePinnedToCore(
    Task1_senddata, /*任務實際對應的Function*/
      "Task1",        /*任務名稱*/
      10000,          /*堆疊空間*/
      NULL,           /*無輸入值*/
      0,              /*優先序0*/
      &Task1,         /*對應的任務變數位址*/
      0);             /*指定在核心0執行 */
}
//===========================================================
void loop() 
{
 if (!client.connected()) {
      reconnect();
      Serial.print(" client not connected  reconnect ");
      delay(200);
    }
  client.loop();
  // Process LED message
  LED_Message();

  unsigned long currentMillis = millis();
  // if WiFi is down, try reconnecting
  if ((WiFi.status() != WL_CONNECTED) && (currentMillis - previousMillis >=interval)) {
    Serial.print(millis());
    Serial.println("Reconnecting to WiFi...");
    WiFi.disconnect();
    WiFi.reconnect();
    previousMillis = currentMillis;

    client.setCallback(callback);
  }

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

(RC522/PN532)不相容--各自獨立

//wifi &  MQTT
#include <WiFi.h>
#include <PubSubClient.h>

//RC522 SPI Mode 
#include <SPI.h>
#include <MFRC522.h>

//GPIO 2 D1 Build in LED
#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[50];  //client.publish("alex9ufo/Esp32/RFID"
//宣告任務Task1
TaskHandle_t Task1;

// Wifi reconnect
unsigned long previousMillis = 0;
unsigned long interval = 30000;
//===========================================================
//任務1副程式Task1_senddata
void Task1_senddata(void * pvParameters ) {
  //無窮迴圈
  for (;;) {
    //偵測上傳旗標是否為true
    Serial.println("Reading RFID tag");
    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
        }  
        else 
        {
          Serial.print("MQTT not connected ");
        }
      
      }
    } 


    else   
    {
      // PN532 probably timed out waiting for a card
      Serial.println("Timed out waiting for a card");
    }      
    //Task1休息，delay(X)不可省略
    delay(1000);
  }
}
//===========================================================

//===========================================================
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 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 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/esp32/led");
      client.subscribe("alex9ufo/esp32/RFID");      
    } 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 LED_Message() {
    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;    
    } 
    else 
    {
      if (WiFi.status() != WL_CONNECTED)  {
        Serial.println("Reconnecting to WiFi...");
        WiFi.disconnect();
        WiFi.reconnect();
      }
    }

}

//===========================================================
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");

    //在核心0啟動任務1
    xTaskCreatePinnedToCore(
    Task1_senddata, /*任務實際對應的Function*/
      "Task1",        /*任務名稱*/
      10000,          /*堆疊空間*/
      NULL,           /*無輸入值*/
      0,              /*優先序0*/
      &Task1,         /*對應的任務變數位址*/
      0);             /*指定在核心0執行 */
}
//===========================================================
void loop() 
{
 if (!client.connected()) {
      reconnect();
      Serial.print(" client not connected  reconnect ");
      delay(200);
    }
  client.loop();
  // Process LED message
  LED_Message();

  unsigned long currentMillis = millis();
  // if WiFi is down, try reconnecting
  if ((WiFi.status() != WL_CONNECTED) && (currentMillis - previousMillis >=interval)) {
    Serial.print(millis());
    Serial.println("Reconnecting to WiFi...");
    WiFi.disconnect();
    WiFi.reconnect();
    previousMillis = currentMillis;

    client.setCallback(callback);
  }

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

alex9ufo 聰明人求知心切

2023年8月26日星期六

實驗2-2 ESP32 RFID (利用ESP32 multitasking 32-bit LX6 microprocessors: core 0 and core 1 改寫Arduino Code )

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張貼留言

2024_09 作業3 以Node-Red 為主

2023年8月26日 星期六

實驗2-2 ESP32 RFID (利用ESP32 multitasking 32-bit LX6 microprocessors: core 0 and core 1 改寫Arduino Code )

沒有留言:

張貼留言

2024_09 作業3 以Node-Red 為主

2023年8月26日星期六