78 lines
3.1 KiB
C++
78 lines
3.1 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. The functions are
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* documented in MFRC522.cpp. Please read it.
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*
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* Released into the public domain.
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* ----------------------------------------------------------------------------
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* Example sketch/program showing how to test your firmware.
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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 SDA(SS) 10 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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#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_PIN 10 // Configurable, see typical pin layout above
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MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
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void setup() {
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Serial.begin(9600); // 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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mfrc522.PCD_Init(); // Init MFRC522 module
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Serial.println(F("*****************************"));
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Serial.println(F("MFRC522 Digital self test"));
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Serial.println(F("*****************************"));
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ShowReaderDetails(); // Show details of PCD - MFRC522 Card Reader details
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Serial.println(F("Performing test..."));
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bool result = mfrc522.PCD_PerformSelfTest();
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Serial.println(F("-----------------------------"));
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Serial.print(F("Result: "));
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if (result)
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Serial.println(F("OK"));
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else
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Serial.println(F("defect or unknown"));
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Serial.println();
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}
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void loop() {} // nothing to do
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/**
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* Helper to print MFRC522 module info
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*/
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void ShowReaderDetails() {
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// Get the MFRC522 firmware version
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byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
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Serial.print(F("Firmware Version: 0x"));
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Serial.print(v, HEX);
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if (v == 0x90)
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Serial.print(F(" = v0.0"));
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else if (v == 0x91)
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Serial.print(F(" = v1.0"));
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else if (v == 0x92)
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Serial.print(F(" = v2.0"));
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else
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Serial.print(F(" = (unknown)"));
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Serial.println();
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// When 0x00 or 0xFF is returned, communication probably failed
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if ((v == 0x00) || (v == 0xFF))
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Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
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}
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