91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
/**
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* ----------------------------------------------------------------------------
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* This is a MFRC522 library example; see https://github.com/miguelbalboa/rfid
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* for further details and other examples.
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*
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* NOTE: The library file MFRC522.h has a lot of useful info. Please read it.
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*
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* Released into the public domain.
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* ----------------------------------------------------------------------------
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* This sample shows how to read and write data blocks on a MIFARE Classic PICC
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* (= card/tag).
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*
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* Typical pin layout used:
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* -----------------------------------------------------------------------------------------
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* MFRC522 Arduino Arduino Arduino Arduino Arduino
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* Reader/PCD Uno Mega Nano v3 Leonardo/Micro Pro Micro
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* Signal Pin Pin Pin Pin Pin Pin
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* -----------------------------------------------------------------------------------------
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* RST/Reset RST 9 5 D9 RESET/ICSP-5 RST
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* SPI SS 1 SDA(SS) 5 53 D10 10 10
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* SPI SS 2 SDA(SS) 2 53 D10 10 10
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* SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16
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* SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14
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* SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15
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*
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*/
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#include <SPI.h>
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#include <MFRC522.h>
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#define RST_PIN 9 // Configurable, see typical pin layout above
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#define SS_1_PIN 5 // Configurable, see typical pin layout above
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#define SS_2_PIN 2 // Configurable, see typical pin layout above
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#define NR_OF_READERS 2
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byte ssPins[] = {SS_1_PIN, SS_2_PIN};
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MFRC522 mfrc522[NR_OF_READERS]; // Create MFRC522 instance.
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MFRC522::MIFARE_Key key;
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/**
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* Initialize.
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*/
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void setup() {
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Serial.begin(115200); // Initialize serial communications with the PC
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while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
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SPI.begin(); // Init SPI bus
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for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
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mfrc522[reader].PCD_Init(ssPins[reader], RST_PIN); // Init each MFRC522 card
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}
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}
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/**
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* Main loop.
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*/
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void loop() {
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for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
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// Look for new cards
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if (mfrc522[reader].PICC_IsNewCardPresent() && mfrc522[reader].PICC_ReadCardSerial()) {
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// Show some details of the PICC (that is: the tag/card)
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Serial.print(F("Card UID:"));
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dump_byte_array(mfrc522[reader].uid.uidByte, mfrc522[reader].uid.size);
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Serial.println();
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Serial.print(F("PICC type: "));
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byte piccType = mfrc522[reader].PICC_GetType(mfrc522[reader].uid.sak);
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Serial.println(mfrc522[reader].PICC_GetTypeName(piccType));
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// Halt PICC
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mfrc522[reader].PICC_HaltA();
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// Stop encryption on PCD
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mfrc522[reader].PCD_StopCrypto1();
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} //if (mfrc522[reader].PICC_IsNewC
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} //for(uint8_t reader
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}
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/**
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* Helper routine to dump a byte array as hex values to Serial.
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*/
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void dump_byte_array(byte *buffer, byte bufferSize) {
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for (byte i = 0; i < bufferSize; i++) {
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Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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Serial.print(buffer[i], HEX);
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}
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}
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