Dial RFID (NFC)

#include "M5Dial.h"
 
void setup() {
    auto cfg = M5.config();
    M5Dial.begin(cfg, false, true);
}
 
void loop() {
    if (M5Dial.Rfid.PICC_IsNewCardPresent() &&
        M5Dial.Rfid.PICC_ReadCardSerial()) {
        M5Dial.Display.clear();
 
        Serial.print(F("PICC type: "));
        uint8_t piccType = M5Dial.Rfid.PICC_GetType(M5Dial.Rfid.uid.sak);
        Serial.println(M5Dial.Rfid.PICC_GetTypeName(piccType));
 
        // Check is the PICC of Classic MIFARE type
        if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
            piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
            piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
            Serial.println(F("Your tag is not of type MIFARE Classic."));
            return;
        }
        for (byte i = 0; i < M5Dial.Rfid.uid.size;
             i++) {  // Output the stored UID data. 
            Serial.printf("%02X ", M5Dial.Rfid.uid.uidByte[i]);
        }
        Serial.println();
    }
}

#include "M5Dial.h"
 
MFRC522::MIFARE_Key key;
 
void setup() {
    auto cfg = M5.config();
    M5Dial.begin(cfg, false, true);
    // Prepare the key (used both as key A and as key B)
    // using FFFFFFFFFFFFh which is the default at chip delivery from the factory
    for (byte i = 0; i < 6; i++) {
        key.keyByte[i] = 0xFF;
    }
}
 
/**
 * Helper routine to dump a byte array as hex values to Serial.
 */
void dump_byte_array(byte *buffer, byte bufferSize) {
    for (byte i = 0; i < bufferSize; i++) {
        Serial.print(buffer[i] < 0x10 ? " 0" : " ");
        Serial.print(buffer[i], HEX);
    }
}
 
void loop() {
    M5Dial.update();
    if (M5Dial.Rfid.PICC_IsNewCardPresent() && M5Dial.Rfid.PICC_ReadCardSerial()) {
        Serial.print(F("PICC type: "));
        uint8_t piccType = M5Dial.Rfid.PICC_GetType(M5Dial.Rfid.uid.sak);
        Serial.println(M5Dial.Rfid.PICC_GetTypeName(piccType));
 
        // Check is the PICC of Classic MIFARE type
        if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI && piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
            piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
            Serial.println(F("Your tag is not of type MIFARE Classic."));
            return;
        }
        String uid = "";
        for (byte i = 0; i < M5Dial.Rfid.uid.size; i++) {  // Output the stored UID data.  将存储的UID数据输出
            Serial.printf("%02X ", M5Dial.Rfid.uid.uidByte[i]);
            uid += String(M5Dial.Rfid.uid.uidByte[i], HEX);
        }
        Serial.println();
        // M5Dial.Rfid.PICC_DumpToSerial(&(M5Dial.Rfid.uid));
 
        // In this sample we use the second sector,
        // that is: sector #1, covering block #4 up to and including block #7
        byte sector      = 1;
        byte blockAddr   = 4;
        byte dataBlock[] = {
            0x01, 0x02, 0x03, 0x04,  //  1,  2,   3,  4,
            0x05, 0x06, 0x07, 0x08,  //  5,  6,   7,  8,
            0x09, 0x0a, 0xff, 0x0b,  //  9, 10, 255, 11,
            0x0c, 0x0d, 0x0e, 0x0f   // 12, 13, 14, 15
        };
        byte trailerBlock = 7;
        MFRC522::StatusCode status;
        byte buffer[18];
        byte size = sizeof(buffer);
 
        // Authenticate using key A
        Serial.println(F("Authenticating using key A..."));
        status = (MFRC522::StatusCode)M5Dial.Rfid.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key,
                                                                   &(M5Dial.Rfid.uid));
        if (status != MFRC522::STATUS_OK) {
            Serial.print(F("PCD_Authenticate() failed: "));
            Serial.println(M5Dial.Rfid.GetStatusCodeName(status));
            return;
        }
 
        // Show the whole sector as it currently is
        Serial.println(F("Current data in sector:"));
        M5Dial.Rfid.PICC_DumpMifareClassicSectorToSerial(&(M5Dial.Rfid.uid), &key, sector);
        Serial.println();
 
        // Read data from the block
        Serial.print(F("Reading data from block "));
        Serial.print(blockAddr);
        Serial.println(F(" ..."));
        status = (MFRC522::StatusCode)M5Dial.Rfid.MIFARE_Read(blockAddr, buffer, &size);
        if (status != MFRC522::STATUS_OK) {
            Serial.print(F("MIFARE_Read() failed: "));
            Serial.println(M5Dial.Rfid.GetStatusCodeName(status));
        }
        Serial.print(F("Data in block "));
        Serial.print(blockAddr);
        Serial.println(F(":"));
        dump_byte_array(buffer, 16);
        Serial.println();
        Serial.println();
 
        // Authenticate using key B
        Serial.println(F("Authenticating again using key B..."));
        status = (MFRC522::StatusCode)M5Dial.Rfid.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_B, trailerBlock, &key,
                                                                   &(M5Dial.Rfid.uid));
        if (status != MFRC522::STATUS_OK) {
            Serial.print(F("PCD_Authenticate() failed: "));
            Serial.println(M5Dial.Rfid.GetStatusCodeName(status));
            return;
        }
 
        // Write data to the block
        Serial.print(F("Writing data into block "));
        Serial.print(blockAddr);
        Serial.println(F(" ..."));
        dump_byte_array(dataBlock, 16);
        Serial.println();
        status = (MFRC522::StatusCode)M5Dial.Rfid.MIFARE_Write(blockAddr, dataBlock, 16);
        if (status != MFRC522::STATUS_OK) {
            Serial.print(F("MIFARE_Write() failed: "));
            Serial.println(M5Dial.Rfid.GetStatusCodeName(status));
        }
        Serial.println();
 
        // Read data from the block (again, should now be what we have written)
        Serial.print(F("Reading data from block "));
        Serial.print(blockAddr);
        Serial.println(F(" ..."));
        status = (MFRC522::StatusCode)M5Dial.Rfid.MIFARE_Read(blockAddr, buffer, &size);
        if (status != MFRC522::STATUS_OK) {
            Serial.print(F("MIFARE_Read() failed: "));
            Serial.println(M5Dial.Rfid.GetStatusCodeName(status));
        }
        Serial.print(F("Data in block "));
        Serial.print(blockAddr);
        Serial.println(F(":"));
        dump_byte_array(buffer, 16);
        Serial.println();
 
        // Check that data in block is what we have written
        // by counting the number of bytes that are equal
        Serial.println(F("Checking result..."));
        byte count = 0;
        for (byte i = 0; i < 16; i++) {
            // Compare buffer (= what we've read) with dataBlock (= what we've written)
            if (buffer[i] == dataBlock[i]) count++;
        }
        Serial.print(F("Number of bytes that match = "));
        Serial.println(count);
        if (count == 16) {
            Serial.println(F("Success :-)"));
        } else {
            Serial.println(F("Failure, no match :-("));
            Serial.println(F("  perhaps the write didn't work properly..."));
        }
        Serial.println();
 
        // Dump the sector data
        Serial.println(F("Current data in sector:"));
        M5Dial.Rfid.PICC_DumpMifareClassicSectorToSerial(&(M5Dial.Rfid.uid), &key, sector);
        Serial.println();
 
        // Halt PICC
        M5Dial.Rfid.PICC_HaltA();
        // Stop encryption on PCD
        M5Dial.Rfid.PCD_StopCrypto1();
    }
}

enum StatusCode {
    STATUS_OK                = 1,    // Success
    STATUS_ERROR            = 2,    // Error in communication
    STATUS_COLLISION        = 3,    // Collission detected
    STATUS_TIMEOUT            = 4,    // Timeout in communication.
    STATUS_NO_ROOM            = 5,    // A buffer is not big enough.
    STATUS_INTERNAL_ERROR    = 6,    // Internal error in the code. Should not happen ;-)
    STATUS_INVALID            = 7,    // Invalid argument.
    STATUS_CRC_WRONG        = 8,    // The CRC_A does not match
    STATUS_MIFARE_NACK        = 9        // A MIFARE PICC responded with NAK.
};

for (byte i = 0; i < M5Dial.Rfid.uid.size;
     i++) {  // Output the stored UID data. 
    Serial.printf("%02X ", M5Dial.Rfid.uid.uidByte[i]);
}