93 lines
3.7 KiB
C++
93 lines
3.7 KiB
C++
/*
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* --------------------------------------------------------------------------------------------------------------------
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* Example showing how to read data from more than one PICC to serial.
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* --------------------------------------------------------------------------------------------------------------------
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* This is a MFRC522 library example; for further details and other examples see: https://github.com/OSSLibraries/Arduino_MFRC522v2
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*
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* Example sketch/program showing how to read data from more than one PICC (that is: a RFID Tag or Card) using a
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* MFRC522 based RFID Reader on the Arduino SPI interface.
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*
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* Warning: This may not work! Multiple devices at one SPI are difficult and cause many trouble!! Engineering skill
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* and knowledge are required!
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*
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* @license Released into the public domain.
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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/101 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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* SPI SS 1 SDA(SS) ** custom, take a unused pin, only HIGH/LOW required **
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* SPI SS 2 SDA(SS) ** custom, take a unused pin, only HIGH/LOW required **
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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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* Not found? For more see: https://github.com/OSSLibraries/Arduino_MFRC522v2#pin-layout
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*/
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// Note for i2c:
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// With i2c possible if every device has a own unique address.
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// Otherwise a i2c multiplexer is required, which requires a own implementation of MFRC522Driver.h.
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#include <MFRC522v2.h>
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#include <MFRC522DriverSPI.h>
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#include <MFRC522DriverPinSimple.h>
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#include <MFRC522Debug.h>
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MFRC522DriverPinSimple ss_1_pin(10); // Configurable, take an unused pin, only HIGH/LOW required, must be different to SS 2.
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MFRC522DriverPinSimple ss_2_pin(8); // Configurable, take an unused pin, only HIGH/LOW required, must be different to SS 1.
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MFRC522DriverSPI driver_1{ss_1_pin};
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MFRC522DriverSPI driver_2{ss_2_pin};
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MFRC522 readers[]{driver_1, driver_2}; // Create MFRC522 instance.
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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 for debugging.
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while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4).
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for (MFRC522 reader : readers) {
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reader.PCD_Init(); // Init each MFRC522 card.
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Serial.print(F("Reader "));
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static uint8_t i = 0;
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i++;
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Serial.print(i);
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Serial.print(F(": "));
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MFRC522Debug::PCD_DumpVersionToSerial(reader, Serial);
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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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// Look for new cards.
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for (MFRC522 reader : readers) {
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if (reader.PICC_IsNewCardPresent() && reader.PICC_ReadCardSerial()) {
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Serial.print(F("Reader "));
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static uint8_t i = 0;
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i++;
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Serial.print(i);
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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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MFRC522Debug::PrintUID(Serial, reader.uid);
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Serial.println();
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Serial.print(F("PICC type: "));
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MFRC522::PICC_Type piccType = reader.PICC_GetType(reader.uid.sak);
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Serial.println(MFRC522Debug::PICC_GetTypeName(piccType));
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// Halt PICC.
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reader.PICC_HaltA();
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// Stop encryption on PCD.
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reader.PCD_StopCrypto1();
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}
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}
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}
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