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#include <SPI.h>
#include <MFRC522.h>


#define MISO_PIN        12
#define MOSI_PIN        13
#define SCK_PIN         14
#define SS_PIN          15
#define RST_PIN         16


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

void setup() {
	delay(2000);
	Serial.begin(115200);		// Initialize serial communications with the PC
	while (!Serial);		// Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)

	// void SPIClass::begin(sck, miso, mosi, ss)
	SPI.begin(SCK_PIN, MISO_PIN, MOSI_PIN, SS_PIN);			// Init SPI bus
	mfrc522.PCD_Init();		// Init MFRC522
	delay(40);				// Optional delay. Some board do need more time after init to be ready, see Readme
	mfrc522.PCD_DumpVersionToSerial();	// Show details of PCD - MFRC522 Card Reader details
	Serial.println(F("Scan PICC to see UID, SAK, type, and data blocks..."));
}

void loop() {
	// Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
	if ( ! mfrc522.PICC_IsNewCardPresent()) {
		return;
	}

	// Select one of the cards
	if ( ! mfrc522.PICC_ReadCardSerial()) {
		return;
	}

	// Dump debug info about the card; PICC_HaltA() is automatically called
	mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
}

Code: Select all

// void SPIClass::begin(sck, miso, mosi, ss)
SPI.begin(SCK_PIN, MISO_PIN, MOSI_PIN, SS_PIN);			// Init SPI bus