NodeMCU-and-RFID-RC522-IoT-Projects

/* # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # RFID MFRC522 / RC522 Library : https://github.com/miguelbalboa/rfid # # # # Installation : # # NodeMCU ESP8266/ESP12E RFID MFRC522 / RC522 # # D2 <----------> SDA/SS # # D5 <----------> SCK # # D7 <----------> MOSI # # D6 <----------> MISO # # GND <----------> GND # # D1 <----------> RST # # 3V/3V3 <----------> 3.3V # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # Subscribe To The IoT Projects YouTube Channel : https://www.youtube.com/channel/UC49xSqiQ6gBrxUMQ9zvzO6A :) :) :) # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # */ //----------------------------------------Include the NodeMCU ESP8266 Library---------------------------------------------------------------------------------------------------------------// //----------------------------------------see here: https://teiotprojects.com/connect-rfid-to-php-mysql-database-with-nodemcu-esp8266/ to add NodeMCU ESP8266 library and board #include #include //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// //----------------------------------------Include the SPI and MFRC522 libraries-------------------------------------------------------------------------------------------------------------// //----------------------------------------Download the MFRC522 / RC522 library here: https://github.com/miguelbalboa/rfid #include #include //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// #define SS_PIN D2 //--> SDA / SS is connected to pinout D2 #define RST_PIN D1 //--> RST is connected to pinout D1 MFRC522 mfrc522(SS_PIN, RST_PIN); //--> Create MFRC522 instance. #define ON_Board_LED 2 //--> Defining an On Board LED, used for indicators when the process of connecting to a wifi router //----------------------------------------SSID and Password of your WiFi router-------------------------------------------------------------------------------------------------------------// const char* ssid = "Alsan Air WiFi 4"; const char* password = "11122235122@kap1"; //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// ESP8266WebServer server(80); //--> Server on port 80 int readsuccess; byte readcard[4]; char str[32] = ""; String StrUID; //-----------------------------------------------------------------------------------------------SETUP--------------------------------------------------------------------------------------// void setup() { Serial.begin(115200); //--> Initialize serial communications with the PC SPI.begin(); //--> Init SPI bus mfrc522.PCD_Init(); //--> Init MFRC522 card delay(500); WiFi.begin(ssid, password); //--> Connect to your WiFi router Serial.println(""); pinMode(ON_Board_LED, OUTPUT); digitalWrite(ON_Board_LED, HIGH); //--> Turn off Led On Board //----------------------------------------Wait for connection Serial.print("Connecting"); while (WiFi.status() != WL_CONNECTED) { Serial.print("."); //----------------------------------------Make the On Board Flashing LED on the process of connecting to the wifi router. digitalWrite(ON_Board_LED, LOW); delay(250); digitalWrite(ON_Board_LED, HIGH); delay(250); } digitalWrite(ON_Board_LED, HIGH); //--> Turn off the On Board LED when it is connected to the wifi router. //----------------------------------------If successfully connected to the wifi router, the IP Address that will be visited is displayed in the serial monitor Serial.println(""); Serial.print("Successfully connected to : "); Serial.println(ssid); Serial.print("IP address: "); Serial.println(WiFi.localIP()); Serial.println("Please tag a card or keychain to see the UID !"); Serial.println(""); } //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// //-----------------------------------------------------------------------------------------------LOOP---------------------------------------------------------------------------------------// void loop() { // put your main code here, to run repeatedly readsuccess = getid(); if (readsuccess) { digitalWrite(ON_Board_LED, LOW); HTTPClient http; //Declare object of class HTTPClient String UIDresultSend, postData; UIDresultSend = StrUID; //Post Data postData = "UIDresult=" + UIDresultSend; http.begin("http://192.168.1.8/NodeMCU-and-RFID-RC522-IoT-Projects/getUID.php"); //Specify request destination http.addHeader("Content-Type", "application/x-www-form-urlencoded"); //Specify content-type header int httpCode = http.POST(postData); //Send the request String payload = http.getString(); //Get the response payload Serial.println(UIDresultSend); Serial.println(httpCode); //Print HTTP return code Serial.println(payload); //Print request response payload http.end(); //Close connection delay(1000); digitalWrite(ON_Board_LED, HIGH); } } //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// //----------------------------------------Procedure for reading and obtaining a UID from a card or keychain---------------------------------------------------------------------------------// int getid() { if (!mfrc522.PICC_IsNewCardPresent()) { return 0; } if (!mfrc522.PICC_ReadCardSerial()) { return 0; } Serial.print("THE UID OF THE SCANNED CARD IS : "); for (int i = 0; i < 4; i++) { readcard[i] = mfrc522.uid.uidByte[i]; //storing the UID of the tag in readcard array_to_string(readcard, 4, str); StrUID = str; } mfrc522.PICC_HaltA(); return 1; } //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------// //----------------------------------------Procedure to change the result of reading an array UID into a string------------------------------------------------------------------------------// void array_to_string(byte array[], unsigned int len, char buffer[]) { for (unsigned int i = 0; i < len; i++) { byte nib1 = (array[i] >> 4) & 0x0F; byte nib2 = (array[i] >> 0) & 0x0F; buffer[i * 2 + 0] = nib1 < 0xA ? '0' + nib1 : 'A' + nib1 - 0xA; buffer[i * 2 + 1] = nib2 < 0xA ? '0' + nib2 : 'A' + nib2 - 0xA; } buffer[len * 2] = '\0'; } //------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------//

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