rfid

RFID-RC522/README.md

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+## Library
+
+- [MFRC522](https://github.com/miguelbalboa/rfid)

RFID-RC522/RFID-RC522.ino

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+/**
+ * ...
+ *
+ * Author: Alexander Popov
+ * License: Unlicense
+ */
+
+#include <SPI.h>
+#include <MFRC522.h>
+
+#define SS_PIN  7
+#define RST_PIN 9
+
+MFRC522 rfid(SS_PIN, RST_PIN);
+
+void setup() {
+  Serial.begin(9600);
+  SPI.begin();
+  rfid.PCD_Init();
+
+  Serial.println("Tap RFID/NFC Tag on reader.");
+}
+
+void loop() {
+  // new tag is available
+  if (rfid.PICC_IsNewCardPresent()) {
+    // NUID has been readed
+    if (rfid.PICC_ReadCardSerial()) {
+      MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
+
+      Serial.print("RFID/NFC Tag Type: ");
+      Serial.println(rfid.PICC_GetTypeName(piccType));
+
+      // print NUID 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();
+
+      rfid.PICC_HaltA(); // halt PICC
+      rfid.PCD_StopCrypto1(); // stop encryption on PCD
+    }
+  }
+}