สอบถามครับ ผมใช้ RFID-RC522 เชื่อกับดาต้าเบส ผ่านesp8266 แต่ส่งค่าไม่ได้ ขึ้น -1 และนานๆที่ จะ ขึ้น -11 ผมต้องแก้ตรงไหน ครับ

สอบถามครับ ผมใช้ RFID-RC522 เชื่อกับดาต้าเบส ผ่านesp8266 แต่ส่งค่าไม่ได้ ขึ้น -1 และนานๆที่ จะ ขึ้น -11 ผมต้องแก้ตรงไหน ครับ

Code ที่ผมใช้อยู่

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#include <ESP8266WiFi.h>     //Include Esp library

#include <WiFiClient.h>

#include <ESP8266WebServer.h>

#include <ESP8266HTTPClient.h>

#include <SPI.h>

#include <MFRC522.h>        //include RFID library

 

#define SS_PIN D8 //RX slave select

#define RST_PIN D3

#define RedLed D1

#define BlueLed D2

#define GreenLed D0

#define BUZZER_PIN D4

 

 

MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.

 

/* Set these to your desired credentials. */

//const char *ssid = "AndroidAP";  //ENTER YOUR WIFI SETTINGS

//const char *password = "1122334455";

////Web/Server address to read/write from

//const char *host = "192.168.43.214";   //IP address of server

 

const char *ssid = "TPST_2.4G";  //ENTER YOUR WIFI SETTINGS

const char *password = "A123456789";

//Web/Server address to read/write from

const char *host = "192.168.88.80";   //IP address of server

 

 

 

String getData , Link;

String CardID = "";

IPAddress ip;

 

void setup() {

  pinMode(BUZZER_PIN, OUTPUT);

  delay(1000);

  Serial.begin(115200);

  SPI.begin();  // Init SPI bus

  mfrc522.PCD_Init(); // Init MFRC522 card

 

  WiFi.mode(WIFI_OFF);        //Prevents reconnection issue (taking too long to connect)

  delay(1000);

  WiFi.mode(WIFI_STA);        //This line hides the viewing of ESP as wifi hotspot

 

  WiFi.begin(ssid, password);     //Connect to your WiFi router

  Serial.println("");

 

  Serial.print("Connecting to ");

  Serial.print(ssid);

  // Wait for connection

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

    delay(500);

    Serial.print(".");

  }

 

  //If connection successful show IP address in serial monitor

  Serial.println("");

  Serial.println("Connected");

  Serial.print("IP address: ");

  Serial.println(WiFi.localIP());  //IP address assigned to your ESP

 

  pinMode(RedLed, OUTPUT);

  pinMode(BlueLed, OUTPUT);

  pinMode(GreenLed, OUTPUT);

 

 

}

 

void loop() {

  digitalWrite(BUZZER_PIN, LOW);

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

    WiFi.disconnect();

    WiFi.mode(WIFI_STA);

    Serial.print("Reconnecting to ");

    Serial.println(ssid);

    WiFi.begin(ssid, password);

 

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

      delay(500);

      Serial.print(".");

    }

    Serial.println("");

    Serial.println("Connected");

    Serial.print("IP address: ");

    Serial.println(WiFi.localIP());  //IP address assigned to your ESP

  }

 

  //look for new card

  if ( ! mfrc522.PICC_IsNewCardPresent()) {

    return;//got to start of loop if there is no card present

  }

  // Select one of the cards

  if ( ! mfrc522.PICC_ReadCardSerial()) {

    return;//if read card serial(0) returns 1, the uid struct contians the ID of the read card.

  }

 

  for (byte i = 0; i < mfrc522.uid.size; i++) {

    CardID += mfrc522.uid.uidByte[i];

  }

 

  HTTPClient http;    //Declare object of class HTTPClient

 

  //GET Data

  getData = "?CardID=" + CardID;  //Note "?" added at front

  ip = WiFi.localIP();

  //Link = "http://" + ip.toString() + "/tps_hr/test.php" + getData;

  Link = "http://192.168.88.80/tps_hr/test.php" + getData;

  Serial.println(Link);

 

  http.begin(Link);

 

  int httpCode = http.GET();            //Send the request

 

  String payload = http.getString();    //Get the response payload

 

  Serial.println(httpCode);   //Print HTTP return code

  Serial.println(payload);    //Print request response payload

  Serial.println(CardID);     //Print Card ID

  if (httpCode == 200) {

    if (payload == "login") {

      digitalWrite(RedLed, HIGH);

      Serial.println("red on");

      delay(500);  //Post Data at every 5 seconds

      digitalWrite(BUZZER_PIN, HIGH);

      delay(500);

      digitalWrite(BUZZER_PIN, LOW);

    }

    if (payload == "logout") {

      digitalWrite(BlueLed, HIGH);

      Serial.println("Blue on");

      delay(500);  //Post Data at every 5 seconds

      digitalWrite(BUZZER_PIN, HIGH);

      delay(500);

      digitalWrite(BUZZER_PIN, LOW);

    }

    if (payload == "succesful" || payload == "Cardavailable") {

      digitalWrite(GreenLed, HIGH);

      delay(500);

      digitalWrite(BUZZER_PIN, HIGH);

      delay(300);

      digitalWrite(BUZZER_PIN, LOW);

      delay(300);

      digitalWrite(BUZZER_PIN, HIGH);

      delay(300);

      digitalWrite(BUZZER_PIN, LOW);

    }

  }

  else {

    Serial.println("No");

    }

  delay(5000);

 

  CardID = "";

  getData = "";

  Link = "";

  http.end();  //Close connection

 

  digitalWrite(RedLed, LOW);

  digitalWrite(BlueLed, LOW);

  digitalWrite(GreenLed, LOW);

}

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