arduino

[ARDUINO] RFID讀取

davidou 2013 年 06 月 20 日

恩最近玩了一下RFID(也才昨天晚上)，其實昨天還有玩紅外線遙控器拉，忘了做筆記。

我這邊筆記一下過程跟連接方式還有程式碼，給自己還有大家參考一下

我的RFID是RC522的版，他是27.145M的頻率。

然後板上有VCC、RST、GND、MISO、MOSI、SCK、NSS、IRQ這八個腳位

VCC要插到ARDUINO的3V腳位 (注意!不是5V)

然後RST接數位接腳5(DIGITAL 5)

GND就是接GND

MISO->數位12

MOSI->數位11

SCK->數位13

NSS->數位10

IRQ-> 我沒接

這樣就完成了，程式碼如下

程式碼#include <SPI.h>
 
#define uchar unsigned char
#define uint unsigned int
 
//data array maxium length
#define MAX_LEN 16
 
/////////////////////////////////////////////////////////////////////
//set the pin
/////////////////////////////////////////////////////////////////////
const int chipSelectPin = 10;
//mega2560 use 53 port , uno use 10 port.
const int NRSTPD = 5;
int i=0;
 
//MF522 command bits
#define PCD_IDLE 0x00 //NO action; cancel current commands
#define PCD_AUTHENT 0x0E //verify password key
#define PCD_RECEIVE 0x08 //receive data
#define PCD_TRANSMIT 0x04 //send data
#define PCD_TRANSCEIVE 0x0C //send and receive data
#define PCD_RESETPHASE 0x0F //reset
#define PCD_CALCCRC 0x03 //CRC check and caculation
 
//Mifare_One card command bits
#define PICC_REQIDL 0x26 //Search the cards that not into sleep mode in the antenna area
#define PICC_REQALL 0x52 //Search all the cards in the antenna area
#define PICC_ANTICOLL 0x93 //prevent conflict
#define PICC_SElECTTAG 0x93 //select card
#define PICC_AUTHENT1A 0x60 //verify A password key
#define PICC_AUTHENT1B 0x61 //verify B password key
#define PICC_READ 0x30 //read
#define PICC_WRITE 0xA0 //write
#define PICC_DECREMENT 0xC0 //deduct value
#define PICC_INCREMENT 0xC1 //charge up value
#define PICC_RESTORE 0xC2 //Restore data into buffer
#define PICC_TRANSFER 0xB0 //Save data into buffer
#define PICC_HALT 0x50 //sleep mode
 
//THe mistake code that return when communicate with MF522
#define MI_OK 0
#define MI_NOTAGERR 1
#define MI_ERR 2
 
//------------------MFRC522 register ---------------
//Page 0:Command and Status
#define Reserved00 0x00
#define CommandReg 0x01
#define CommIEnReg 0x02
#define DivlEnReg 0x03
#define CommIrqReg 0x04
#define DivIrqReg 0x05
#define ErrorReg 0x06
#define Status1Reg 0x07
#define Status2Reg 0x08
#define FIFODataReg 0x09
#define FIFOLevelReg 0x0A
#define WaterLevelReg 0x0B
#define ControlReg 0x0C
#define BitFramingReg 0x0D
#define CollReg 0x0E
#define Reserved01 0x0F
//Page 1:Command
#define Reserved10 0x10
#define ModeReg 0x11
#define TxModeReg 0x12
#define RxModeReg 0x13
#define TxControlReg 0x14
#define TxAutoReg 0x15
#define TxSelReg 0x16
#define RxSelReg 0x17
#define RxThresholdReg 0x18
#define DemodReg 0x19
#define Reserved11 0x1A
#define Reserved12 0x1B
#define MifareReg 0x1C
#define Reserved13 0x1D
#define Reserved14 0x1E
#define SerialSpeedReg 0x1F
//Page 2:CFG
#define Reserved20 0x20
#define CRCResultRegM 0x21
#define CRCResultRegL 0x22
#define Reserved21 0x23
#define ModWidthReg 0x24
#define Reserved22 0x25
#define RFCfgReg 0x26
#define GsNReg 0x27
#define CWGsPReg 0x28
#define ModGsPReg 0x29
#define TModeReg 0x2A
#define TPrescalerReg 0x2B
#define TReloadRegH 0x2C
#define TReloadRegL 0x2D
#define TCounterValueRegH 0x2E
#define TCounterValueRegL 0x2F
//Page 3:TestRegister
#define Reserved30 0x30
#define TestSel1Reg 0x31
#define TestSel2Reg 0x32
#define TestPinEnReg 0x33
#define TestPinValueReg 0x34
#define TestBusReg 0x35
#define AutoTestReg 0x36
#define VersionReg 0x37
#define AnalogTestReg 0x38
#define TestDAC1Reg 0x39
#define TestDAC2Reg 0x3A
#define TestADCReg 0x3B
#define Reserved31 0x3C
#define Reserved32 0x3D
#define Reserved33 0x3E
#define Reserved34 0x3F
//-----------------------------------------------
 
//4 bytes Serial number of card, the 5 bytes is verfiy bytes
uchar serNum[5];
 
void setup()
{
    Serial.begin(57600);
 
    SPI.begin();
 
    pinMode(chipSelectPin,OUTPUT); // Set digital pin 10 as OUTPUT to connect it to the RFID /ENABLE pin
    digitalWrite(chipSelectPin, LOW); // Activate the RFID reader
    pinMode(NRSTPD,OUTPUT); // Set digital pin 5 , Not Reset and Power-down
 
    MFRC522_Init();
}
 
void loop()
{
 
    uchar status;
    uchar str[MAX_LEN];
 
    // Search card, return card types
    status = MFRC522_Request(PICC_REQIDL, str);
    if (status != MI_OK)
    {
        return;
    }
 
    // Show card type
    ShowCardType(str);
 
    //Prevent conflict, return the 4 bytes Serial number of the card
    status = MFRC522_Anticoll(str);
 
    // str[0..3]: serial number of the card
    // str[4]: XOR checksum of the SN.
    if (status == MI_OK)
    {
        Serial.print("The card's number is: ");
        memcpy(serNum, str, 5);
        ShowCardID(serNum);
 
        // Check people associated with card ID
        uchar* id = serNum;
        if( id[0]==0x4B && id[1]==0xE6 && id[2]==0xD1 && id[3]==0x3B ) {
            Serial.println("Hello Mary!");
        } else if(id[0]==0x3D && id[1]==0xB4 && id[2]==0xB7 && id[3]==0xD3) {
            Serial.println("Hello Greg!");
        }else{
            Serial.println("Hello unkown guy!");
        }
    }
 
    MFRC522_Halt(); //command the card into sleep mode
 
    delay(200);
}
 
/*
 * Function：ShowCardID
 * Description：Show Card ID
 * Input parameter：ID string
 * Return：Null
 */
void ShowCardID(uchar *id)
{
    int IDlen=4;
    for(int i=0; i<IDlen; i++){
        Serial.print(0x0F & (id[i]>>4), HEX);
        Serial.print(0x0F & id[i],HEX);
    }
    Serial.println("");
}
 
/*
 * Function：ShowCardType
 * Description：Show Card type
 * Input parameter：Type string
 * Return：Null
 */
void ShowCardType(uchar* type)
{
    Serial.print("Card type: ");
    if(type[0]==0x04&&type[1]==0x00)
        Serial.println("MFOne-S50");
    else if(type[0]==0x02&&type[1]==0x00)
        Serial.println("MFOne-S70");
    else if(type[0]==0x44&&type[1]==0x00)
        Serial.println("MF-UltraLight");
    else if(type[0]==0x08&&type[1]==0x00)
        Serial.println("MF-Pro");
    else if(type[0]==0x44&&type[1]==0x03)
        Serial.println("MF Desire");
    else
        Serial.println("Unknown");
}
 
/*
 * Function：Write_MFRC5200
 * Description：write a byte data into one register of MR RC522
 * Input parameter：addr--register address；val--the value that need to write in
 * Return：Null
 */
void Write_MFRC522(uchar addr, uchar val)
{
    digitalWrite(chipSelectPin, LOW);
 
    //address format：0XXXXXX0
    SPI.transfer((addr<<1)&0x7E);
    SPI.transfer(val);
 
    digitalWrite(chipSelectPin, HIGH);
}
 
/*
 * Function：Read_MFRC522
 * Description：read a byte data into one register of MR RC522
 * Input parameter：addr--register address
 * Return：return the read value
 */
uchar Read_MFRC522(uchar addr)
{
    uchar val;
 
    digitalWrite(chipSelectPin, LOW);
 
    //address format：1XXXXXX0
    SPI.transfer(((addr<<1)&0x7E) | 0x80);
    val =SPI.transfer(0x00);
 
    digitalWrite(chipSelectPin, HIGH);
 
    return val;
}
 
/*
 * Function：SetBitMask
 * Description：set RC522 register bit
 * Input parameter：reg--register address;mask--value
 * Return：null
 */
void SetBitMask(uchar reg, uchar mask)
{
    uchar tmp;
    tmp = Read_MFRC522(reg);
    Write_MFRC522(reg, tmp | mask); // set bit mask
}
 
/*
 * Function：ClearBitMask
 * Description：clear RC522 register bit
 * Input parameter：reg--register address;mask--value
 * Return：null
 */
void ClearBitMask(uchar reg, uchar mask)
{
    uchar tmp;
    tmp = Read_MFRC522(reg);
    Write_MFRC522(reg, tmp & (~mask)); // clear bit mask
}
 
/*
 * Function：AntennaOn
 * Description：Turn on antenna, every time turn on or shut down antenna need at least 1ms delay
 * Input parameter：null
 * Return：null
 */
void AntennaOn(void)
{
    uchar temp;
 
    temp = Read_MFRC522(TxControlReg);
    if (!(temp & 0x03))
    {
        SetBitMask(TxControlReg, 0x03);
    }
}
 
/*
 * Function：AntennaOff
 * Description：Turn off antenna, every time turn on or shut down antenna need at least 1ms delay
 * Input parameter：null
 * Return：null
 */
void AntennaOff(void)
{
    ClearBitMask(TxControlReg, 0x03);
}
 
/*
 * Function：ResetMFRC522
 * Description： reset RC522
 * Input parameter：null
 * Return：null
 */
void MFRC522_Reset(void)
{
    Write_MFRC522(CommandReg, PCD_RESETPHASE);
}
 
/*
 * Function：InitMFRC522
 * Description：initilize RC522
 * Input parameter：null
 * Return：null
 */
void MFRC522_Init(void)
{
    digitalWrite(NRSTPD,HIGH);
 
    MFRC522_Reset();
 
    //Timer: TPrescaler*TreloadVal/6.78MHz = 24ms
    Write_MFRC522(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler
    Write_MFRC522(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg
    Write_MFRC522(TReloadRegL, 30);
    Write_MFRC522(TReloadRegH, 0);
 
    Write_MFRC522(TxAutoReg, 0x40); //100%ASK
    Write_MFRC522(ModeReg, 0x3D); //CRC initilizate value 0x6363 ???
 
    //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0
    //Write_MFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]
    //Write_MFRC522(RFCfgReg, 0x7F); //RxGain = 48dB
 
    AntennaOn(); //turn on antenna
}
 
/*
 * Function：MFRC522_Request
 * Description：Searching card, read card type
 * Input parameter：reqMode--search methods，
 * TagType--return card types
 * 0x4400 = Mifare_UltraLight
 * 0x0400 = Mifare_One(S50)
 * 0x0200 = Mifare_One(S70)
 * 0x0800 = Mifare_Pro(X)
 * 0x4403 = Mifare_DESFire
 * return：return MI_OK if successed
 */
uchar MFRC522_Request(uchar reqMode, uchar *TagType)
{
    uchar status;
    uint backBits; //the data bits that received
 
    Write_MFRC522(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ???
 
    TagType[0] = reqMode;
    status = MFRC522_ToCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits);
 
    if ((status != MI_OK) || (backBits != 0x10))
    {
        status = MI_ERR;
    }
 
    return status;
}
 
/*
 * Function：MFRC522_ToCard
 * Description：communicate between RC522 and ISO14443
 * Input parameter：command--MF522 command bits
 * sendData--send data to card via rc522
 * sendLen--send data length
 * backData--the return data from card
 * backLen--the length of return data
 * return：return MI_OK if successed
 */
uchar MFRC522_ToCard(uchar command, uchar *sendData, uchar sendLen, uchar *backData, uint *backLen)
{
    uchar status = MI_ERR;
    uchar irqEn = 0x00;
    uchar waitIRq = 0x00;
    uchar lastBits;
    uchar n;
    uint i;
 
    switch (command)
    {
        case PCD_AUTHENT: //verify card password
        {
            irqEn = 0x12;
            waitIRq = 0x10;
            break;
        }
        case PCD_TRANSCEIVE: //send data in the FIFO
        {
            irqEn = 0x77;
            waitIRq = 0x30;
            break;
        }
        default:
            break;
    }
 
    Write_MFRC522(CommIEnReg, irqEn|0x80); //Allow interruption
    ClearBitMask(CommIrqReg, 0x80); //Clear all the interrupt bits
    SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO initilizate
 
    Write_MFRC522(CommandReg, PCD_IDLE); //NO action;cancel current command ???
 
    //write data into FIFO
    for (i=0; i<sendLen; i++)
    {
        Write_MFRC522(FIFODataReg, sendData[i]);
    }
 
    //procceed it
    Write_MFRC522(CommandReg, command);
    if (command == PCD_TRANSCEIVE)
    {
        SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts
    }
 
    //waite receive data is finished
    i = 2000; //i should adjust according the clock, the maxium the waiting time should be 25 ms???
    do
    {
        //CommIrqReg[7..0]
        //Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq
        n = Read_MFRC522(CommIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x01) && !(n&waitIRq));
 
    ClearBitMask(BitFramingReg, 0x80); //StartSend=0
 
    if (i != 0)
    {
        if(!(Read_MFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr
        {
            status = MI_OK;
            if (n & irqEn & 0x01)
            {
                status = MI_NOTAGERR; //??
            }
 
            if (command == PCD_TRANSCEIVE)
            {
                n = Read_MFRC522(FIFOLevelReg);
                lastBits = Read_MFRC522(ControlReg) & 0x07;
                if (lastBits)
                {
                    *backLen = (n-1)*8 + lastBits;
                }
                else
                {
                    *backLen = n*8;
                }
 
                if (n == 0)
                {
                    n = 1;
                }
                if (n > MAX_LEN)
                {
                    n = MAX_LEN;
                }
 
                //read the data from FIFO
                for (i=0; i<n; i++)
                {
                    backData[i] = Read_MFRC522(FIFODataReg);
                }
            }
        }
        else
        {
            status = MI_ERR;
        }
 
    }
 
    //SetBitMask(ControlReg,0x80); //timer stops
    //Write_MFRC522(CommandReg, PCD_IDLE);
 
    return status;
}
 
/*
 * Function：MFRC522_Anticoll
 * Description：Prevent conflict, read the card serial number
 * Input parameter：serNum--return the 4 bytes card serial number, the 5th byte is recheck byte
 * return：return MI_OK if successed
 */
uchar MFRC522_Anticoll(uchar *serNum)
{
    uchar status;
    uchar i;
    uchar serNumCheck=0;
    uint unLen;
 
    //ClearBitMask(Status2Reg, 0x08); //strSensclear
    //ClearBitMask(CollReg,0x80); //ValuesAfterColl
    Write_MFRC522(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0]
 
    serNum[0] = PICC_ANTICOLL;
    serNum[1] = 0x20;
    status = MFRC522_ToCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen);
 
    if (status == MI_OK)
    {
        //Verify card serial number
        for (i=0; i<4; i++)
        {
            serNumCheck ^= serNum[i];
        }
        if (serNumCheck != serNum[i])
        {
            status = MI_ERR;
        }
    }
 
    //SetBitMask(CollReg, 0x80); //ValuesAfterColl=1
 
    return status;
}
 
/*
 * Function：CalulateCRC
 * Description：Use MF522 to caculate CRC
 * Input parameter：pIndata--the CRC data need to be read，len--data length，pOutData-- the caculated result of CRC
 * return：Null
 */
void CalulateCRC(uchar *pIndata, uchar len, uchar *pOutData)
{
    uchar i, n;
 
    ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0
    SetBitMask(FIFOLevelReg, 0x80); //Clear FIFO pointer
    //Write_MFRC522(CommandReg, PCD_IDLE);
 
    //Write data into FIFO
    for (i=0; i<len; i++)
    {
        Write_MFRC522(FIFODataReg, *(pIndata+i));
    }
    Write_MFRC522(CommandReg, PCD_CALCCRC);
 
    //waite CRC caculation to finish
    i = 0xFF;
    do
    {
        n = Read_MFRC522(DivIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x04)); //CRCIrq = 1
 
    //read CRC caculation result
    pOutData[0] = Read_MFRC522(CRCResultRegL);
    pOutData[1] = Read_MFRC522(CRCResultRegM);
}
 
/*
 * Function：MFRC522_Write
 * Description：write block data
 * Input parameters：blockAddr--block address;writeData--Write 16 bytes data into block
 * return：return MI_OK if successed
 */
uchar MFRC522_Write(uchar blockAddr, uchar *writeData)
{
    uchar status;
    uint recvBits;
    uchar i;
    uchar buff[18];
 
    buff[0] = PICC_WRITE;
    buff[1] = blockAddr;
    CalulateCRC(buff, 2, &buff[2]);
    status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff, &recvBits);
 
    if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A))
    {
        status = MI_ERR;
    }
 
    if (status == MI_OK)
    {
        for (i=0; i<16; i++) //Write 16 bytes data into FIFO
        {
            buff[i] = *(writeData+i);
        }
        CalulateCRC(buff, 16, &buff[16]);
        status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 18, buff, &recvBits);
 
        if ((status != MI_OK) || (recvBits != 4) || ((buff[0] & 0x0F) != 0x0A))
        {
            status = MI_ERR;
        }
    }
 
    return status;
}
 
/*
 * Function：MFRC522_Halt
 * Description：Command the cards into sleep mode
 * Input parameters：null
 * return：null
 */
void MFRC522_Halt(void)
{
    uchar status;
    uint unLen;
    uchar buff[4];
 
    buff[0] = PICC_HALT;
    buff[1] = 0;
    CalulateCRC(buff, 2, &buff[2]);
 
    status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff,&unLen);
}

程式碼
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629	`#include <SPI.h>` `#define uchar unsigned char` `#define uint unsigned int` `//data array maxium length` `#define MAX_LEN 16` `/////////////////////////////////////////////////////////////////////` `//set the pin` `/////////////////////////////////////////////////////////////////////` `const int chipSelectPin = 10;` `//mega2560 use 53 port , uno use 10 port.` `const int NRSTPD = 5;` `int i=0;` `//MF522 command bits` `#define PCD_IDLE 0x00 //NO action; cancel current commands` `#define PCD_AUTHENT 0x0E //verify password key` `#define PCD_RECEIVE 0x08 //receive data` `#define PCD_TRANSMIT 0x04 //send data` `#define PCD_TRANSCEIVE 0x0C //send and receive data` `#define PCD_RESETPHASE 0x0F //reset` `#define PCD_CALCCRC 0x03 //CRC check and caculation` `//Mifare_One card command bits` `#define PICC_REQIDL 0x26 //Search the cards that not into sleep mode in the antenna area` `#define PICC_REQALL 0x52 //Search all the cards in the antenna area` `#define PICC_ANTICOLL 0x93 //prevent conflict` `#define PICC_SElECTTAG 0x93 //select card` `#define PICC_AUTHENT1A 0x60 //verify A password key` `#define PICC_AUTHENT1B 0x61 //verify B password key` `#define PICC_READ 0x30 //read` `#define PICC_WRITE 0xA0 //write` `#define PICC_DECREMENT 0xC0 //deduct value` `#define PICC_INCREMENT 0xC1 //charge up value` `#define PICC_RESTORE 0xC2 //Restore data into buffer` `#define PICC_TRANSFER 0xB0 //Save data into buffer` `#define PICC_HALT 0x50 //sleep mode` `//THe mistake code that return when communicate with MF522` `#define MI_OK 0` `#define MI_NOTAGERR 1` `#define MI_ERR 2` `//------------------MFRC522 register ---------------` `//Page 0:Command and Status` `#define Reserved00 0x00` `#define CommandReg 0x01` `#define CommIEnReg 0x02` `#define DivlEnReg 0x03` `#define CommIrqReg 0x04` `#define DivIrqReg 0x05` `#define ErrorReg 0x06` `#define Status1Reg 0x07` `#define Status2Reg 0x08` `#define FIFODataReg 0x09` `#define FIFOLevelReg 0x0A` `#define WaterLevelReg 0x0B` `#define ControlReg 0x0C` `#define BitFramingReg 0x0D` `#define CollReg 0x0E` `#define Reserved01 0x0F` `//Page 1:Command` `#define Reserved10 0x10` `#define ModeReg 0x11` `#define TxModeReg 0x12` `#define RxModeReg 0x13` `#define TxControlReg 0x14` `#define TxAutoReg 0x15` `#define TxSelReg 0x16` `#define RxSelReg 0x17` `#define RxThresholdReg 0x18` `#define DemodReg 0x19` `#define Reserved11 0x1A` `#define Reserved12 0x1B` `#define MifareReg 0x1C` `#define Reserved13 0x1D` `#define Reserved14 0x1E` `#define SerialSpeedReg 0x1F` `//Page 2:CFG` `#define Reserved20 0x20` `#define CRCResultRegM 0x21` `#define CRCResultRegL 0x22` `#define Reserved21 0x23` `#define ModWidthReg 0x24` `#define Reserved22 0x25` `#define RFCfgReg 0x26` `#define GsNReg 0x27` `#define CWGsPReg 0x28` `#define ModGsPReg 0x29` `#define TModeReg 0x2A` `#define TPrescalerReg 0x2B` `#define TReloadRegH 0x2C` `#define TReloadRegL 0x2D` `#define TCounterValueRegH 0x2E` `#define TCounterValueRegL 0x2F` `//Page 3:TestRegister` `#define Reserved30 0x30` `#define TestSel1Reg 0x31` `#define TestSel2Reg 0x32` `#define TestPinEnReg 0x33` `#define TestPinValueReg 0x34` `#define TestBusReg 0x35` `#define AutoTestReg 0x36` `#define VersionReg 0x37` `#define AnalogTestReg 0x38` `#define TestDAC1Reg 0x39` `#define TestDAC2Reg 0x3A` `#define TestADCReg 0x3B` `#define Reserved31 0x3C` `#define Reserved32 0x3D` `#define Reserved33 0x3E` `#define Reserved34 0x3F` `//-----------------------------------------------` `//4 bytes Serial number of card, the 5 bytes is verfiy bytes` `uchar serNum[5];` `void setup()` `{` `Serial.begin(57600);` `SPI.begin();` `pinMode(chipSelectPin,OUTPUT); // Set digital pin 10 as OUTPUT to connect it to the RFID /ENABLE pin` `digitalWrite(chipSelectPin, LOW); // Activate the RFID reader` `pinMode(NRSTPD,OUTPUT); // Set digital pin 5 , Not Reset and Power-down` `MFRC522_Init();` `}` `void loop()` `{` `uchar status;` `uchar str[MAX_LEN];` `// Search card, return card types` `status = MFRC522_Request(PICC_REQIDL, str);` `if (status != MI_OK)` `{` `return;` `}` `// Show card type` `ShowCardType(str);` `//Prevent conflict, return the 4 bytes Serial number of the card` `status = MFRC522_Anticoll(str);` `// str[0..3]: serial number of the card` `// str[4]: XOR checksum of the SN.` `if (status == MI_OK)` `{` `Serial.print("The card's number is: ");` `memcpy(serNum, str, 5);` `ShowCardID(serNum);` `// Check people associated with card ID` `uchar* id = serNum;` `if( id[0]==0x4B && id[1]==0xE6 && id[2]==0xD1 && id[3]==0x3B ) {` `Serial.println("Hello Mary!");` `} else if(id[0]==0x3D && id[1]==0xB4 && id[2]==0xB7 && id[3]==0xD3) {` `Serial.println("Hello Greg!");` `}else{` `Serial.println("Hello unkown guy!");` `}` `}` `MFRC522_Halt(); //command the card into sleep mode` `delay(200);` `}` `/` ` Function：ShowCardID` `* Description：Show Card ID` `* Input parameter：ID string` `* Return：Null` `/` `void ShowCardID(uchar id)` `{` `int IDlen=4;` `for(int i=0; i<IDlen; i++){` `Serial.print(0x0F & (id[i]>>4), HEX);` `Serial.print(0x0F & id[i],HEX);` `}` `Serial.println("");` `}` `/` ` Function：ShowCardType` `* Description：Show Card type` `* Input parameter：Type string` `* Return：Null` `/` `void ShowCardType(uchar type)` `{` `Serial.print("Card type: ");` `if(type[0]==0x04&&type[1]==0x00)` `Serial.println("MFOne-S50");` `else if(type[0]==0x02&&type[1]==0x00)` `Serial.println("MFOne-S70");` `else if(type[0]==0x44&&type[1]==0x00)` `Serial.println("MF-UltraLight");` `else if(type[0]==0x08&&type[1]==0x00)` `Serial.println("MF-Pro");` `else if(type[0]==0x44&&type[1]==0x03)` `Serial.println("MF Desire");` `else` `Serial.println("Unknown");` `}` `/` ` Function：Write_MFRC5200` `* Description：write a byte data into one register of MR RC522` `* Input parameter：addr--register address；val--the value that need to write in` `* Return：Null` `/` `void Write_MFRC522(uchar addr, uchar val)` `{` `digitalWrite(chipSelectPin, LOW);` `//address format：0XXXXXX0` `SPI.transfer((addr<<1)&0x7E);` `SPI.transfer(val);` `digitalWrite(chipSelectPin, HIGH);` `}` `/` `* Function：Read_MFRC522` `* Description：read a byte data into one register of MR RC522` `* Input parameter：addr--register address` `* Return：return the read value` `/` `uchar Read_MFRC522(uchar addr)` `{` `uchar val;` `digitalWrite(chipSelectPin, LOW);` `//address format：1XXXXXX0` `SPI.transfer(((addr<<1)&0x7E) \| 0x80);` `val =SPI.transfer(0x00);` `digitalWrite(chipSelectPin, HIGH);` `return val;` `}` `/` `* Function：SetBitMask` `* Description：set RC522 register bit` `* Input parameter：reg--register address;mask--value` `* Return：null` `/` `void SetBitMask(uchar reg, uchar mask)` `{` `uchar tmp;` `tmp = Read_MFRC522(reg);` `Write_MFRC522(reg, tmp \| mask); // set bit mask` `}` `/` `* Function：ClearBitMask` `* Description：clear RC522 register bit` `* Input parameter：reg--register address;mask--value` `* Return：null` `/` `void ClearBitMask(uchar reg, uchar mask)` `{` `uchar tmp;` `tmp = Read_MFRC522(reg);` `Write_MFRC522(reg, tmp & (~mask)); // clear bit mask` `}` `/` `* Function：AntennaOn` `* Description：Turn on antenna, every time turn on or shut down antenna need at least 1ms delay` `* Input parameter：null` `* Return：null` `/` `void AntennaOn(void)` `{` `uchar temp;` `temp = Read_MFRC522(TxControlReg);` `if (!(temp & 0x03))` `{` `SetBitMask(TxControlReg, 0x03);` `}` `}` `/` `* Function：AntennaOff` `* Description：Turn off antenna, every time turn on or shut down antenna need at least 1ms delay` `* Input parameter：null` `* Return：null` `/` `void AntennaOff(void)` `{` `ClearBitMask(TxControlReg, 0x03);` `}` `/` `* Function：ResetMFRC522` `* Description： reset RC522` `* Input parameter：null` `* Return：null` `/` `void MFRC522_Reset(void)` `{` `Write_MFRC522(CommandReg, PCD_RESETPHASE);` `}` `/` `* Function：InitMFRC522` `* Description：initilize RC522` `* Input parameter：null` `* Return：null` `/` `void MFRC522_Init(void)` `{` `digitalWrite(NRSTPD,HIGH);` `MFRC522_Reset();` `//Timer: TPrescalerTreloadVal/6.78MHz = 24ms` `Write_MFRC522(TModeReg, 0x8D); //Tauto=1; f(Timer) = 6.78MHz/TPreScaler` `Write_MFRC522(TPrescalerReg, 0x3E); //TModeReg[3..0] + TPrescalerReg` `Write_MFRC522(TReloadRegL, 30);` `Write_MFRC522(TReloadRegH, 0);` `Write_MFRC522(TxAutoReg, 0x40); //100%ASK` `Write_MFRC522(ModeReg, 0x3D); //CRC initilizate value 0x6363 ???` `//ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0` `//Write_MFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0]` `//Write_MFRC522(RFCfgReg, 0x7F); //RxGain = 48dB` `AntennaOn(); //turn on antenna` `}` `/` ` Function：MFRC522_Request` `* Description：Searching card, read card type` `* Input parameter：reqMode--search methods，` `* TagType--return card types` `* 0x4400 = Mifare_UltraLight` `* 0x0400 = Mifare_One(S50)` `* 0x0200 = Mifare_One(S70)` `* 0x0800 = Mifare_Pro(X)` `* 0x4403 = Mifare_DESFire` `* return：return MI_OK if successed` `/` `uchar MFRC522_Request(uchar reqMode, uchar TagType)` `{` `uchar status;` `uint backBits; //the data bits that received` `Write_MFRC522(BitFramingReg, 0x07); //TxLastBists = BitFramingReg[2..0] ???` `TagType[0] = reqMode;` `status = MFRC522_ToCard(PCD_TRANSCEIVE, TagType, 1, TagType, &backBits);` `if ((status != MI_OK) \|\| (backBits != 0x10))` `{` `status = MI_ERR;` `}` `return status;` `}` `/` ` Function：MFRC522_ToCard` `* Description：communicate between RC522 and ISO14443` `* Input parameter：command--MF522 command bits` `* sendData--send data to card via rc522` `* sendLen--send data length` `* backData--the return data from card` `* backLen--the length of return data` `* return：return MI_OK if successed` `/` `uchar MFRC522_ToCard(uchar command, uchar sendData, uchar sendLen, uchar backData, uint backLen)` `{` `uchar status = MI_ERR;` `uchar irqEn = 0x00;` `uchar waitIRq = 0x00;` `uchar lastBits;` `uchar n;` `uint i;` `switch (command)` `{` `case PCD_AUTHENT: //verify card password` `{` `irqEn = 0x12;` `waitIRq = 0x10;` `break;` `}` `case PCD_TRANSCEIVE: //send data in the FIFO` `{` `irqEn = 0x77;` `waitIRq = 0x30;` `break;` `}` `default:` `break;` `}` `Write_MFRC522(CommIEnReg, irqEn\|0x80); //Allow interruption` `ClearBitMask(CommIrqReg, 0x80); //Clear all the interrupt bits` `SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO initilizate` `Write_MFRC522(CommandReg, PCD_IDLE); //NO action;cancel current command ???` `//write data into FIFO` `for (i=0; i<sendLen; i++)` `{` `Write_MFRC522(FIFODataReg, sendData[i]);` `}` `//procceed it` `Write_MFRC522(CommandReg, command);` `if (command == PCD_TRANSCEIVE)` `{` `SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts` `}` `//waite receive data is finished` `i = 2000; //i should adjust according the clock, the maxium the waiting time should be 25 ms???` `do` `{` `//CommIrqReg[7..0]` `//Set1 TxIRq RxIRq IdleIRq HiAlerIRq LoAlertIRq ErrIRq TimerIRq` `n = Read_MFRC522(CommIrqReg);` `i--;` `}` `while ((i!=0) && !(n&0x01) && !(n&waitIRq));` `ClearBitMask(BitFramingReg, 0x80); //StartSend=0` `if (i != 0)` `{` `if(!(Read_MFRC522(ErrorReg) & 0x1B)) //BufferOvfl Collerr CRCErr ProtecolErr` `{` `status = MI_OK;` `if (n & irqEn & 0x01)` `{` `status = MI_NOTAGERR; //??` `}` `if (command == PCD_TRANSCEIVE)` `{` `n = Read_MFRC522(FIFOLevelReg);` `lastBits = Read_MFRC522(ControlReg) & 0x07;` `if (lastBits)` `{` `backLen = (n-1)8 + lastBits;` `}` `else` `{` `backLen = n8;` `}` `if (n == 0)` `{` `n = 1;` `}` `if (n > MAX_LEN)` `{` `n = MAX_LEN;` `}` `//read the data from FIFO` `for (i=0; i<n; i++)` `{` `backData[i] = Read_MFRC522(FIFODataReg);` `}` `}` `}` `else` `{` `status = MI_ERR;` `}` `}` `//SetBitMask(ControlReg,0x80); //timer stops` `//Write_MFRC522(CommandReg, PCD_IDLE);` `return status;` `}` `/` ` Function：MFRC522_Anticoll` `* Description：Prevent conflict, read the card serial number` `* Input parameter：serNum--return the 4 bytes card serial number, the 5th byte is recheck byte` `* return：return MI_OK if successed` `/` `uchar MFRC522_Anticoll(uchar serNum)` `{` `uchar status;` `uchar i;` `uchar serNumCheck=0;` `uint unLen;` `//ClearBitMask(Status2Reg, 0x08); //strSensclear` `//ClearBitMask(CollReg,0x80); //ValuesAfterColl` `Write_MFRC522(BitFramingReg, 0x00); //TxLastBists = BitFramingReg[2..0]` `serNum[0] = PICC_ANTICOLL;` `serNum[1] = 0x20;` `status = MFRC522_ToCard(PCD_TRANSCEIVE, serNum, 2, serNum, &unLen);` `if (status == MI_OK)` `{` `//Verify card serial number` `for (i=0; i<4; i++)` `{` `serNumCheck ^= serNum[i];` `}` `if (serNumCheck != serNum[i])` `{` `status = MI_ERR;` `}` `}` `//SetBitMask(CollReg, 0x80); //ValuesAfterColl=1` `return status;` `}` `/` ` Function：CalulateCRC` `* Description：Use MF522 to caculate CRC` `* Input parameter：pIndata--the CRC data need to be read，len--data length，pOutData-- the caculated result of CRC` `* return：Null` `/` `void CalulateCRC(uchar pIndata, uchar len, uchar pOutData)` `{` `uchar i, n;` `ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0` `SetBitMask(FIFOLevelReg, 0x80); //Clear FIFO pointer` `//Write_MFRC522(CommandReg, PCD_IDLE);` `//Write data into FIFO` `for (i=0; i<len; i++)` `{` `Write_MFRC522(FIFODataReg, (pIndata+i));` `}` `Write_MFRC522(CommandReg, PCD_CALCCRC);` `//waite CRC caculation to finish` `i = 0xFF;` `do` `{` `n = Read_MFRC522(DivIrqReg);` `i--;` `}` `while ((i!=0) && !(n&0x04)); //CRCIrq = 1` `//read CRC caculation result` `pOutData[0] = Read_MFRC522(CRCResultRegL);` `pOutData[1] = Read_MFRC522(CRCResultRegM);` `}` `/` ` Function：MFRC522_Write` `* Description：write block data` `* Input parameters：blockAddr--block address;writeData--Write 16 bytes data into block` `* return：return MI_OK if successed` `/` `uchar MFRC522_Write(uchar blockAddr, uchar writeData)` `{` `uchar status;` `uint recvBits;` `uchar i;` `uchar buff[18];` `buff[0] = PICC_WRITE;` `buff[1] = blockAddr;` `CalulateCRC(buff, 2, &buff[2]);` `status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff, &recvBits);` `if ((status != MI_OK) \|\| (recvBits != 4) \|\| ((buff[0] & 0x0F) != 0x0A))` `{` `status = MI_ERR;` `}` `if (status == MI_OK)` `{` `for (i=0; i<16; i++) //Write 16 bytes data into FIFO` `{` `buff[i] = (writeData+i);` `}` `CalulateCRC(buff, 16, &buff[16]);` `status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 18, buff, &recvBits);` `if ((status != MI_OK) \|\| (recvBits != 4) \|\| ((buff[0] & 0x0F) != 0x0A))` `{` `status = MI_ERR;` `}` `}` `return status;` `}` `/` `* Function：MFRC522_Halt` `* Description：Command the cards into sleep mode` `* Input parameters：null` `* return：null` `*/` `void MFRC522_Halt(void)` `{` `uchar status;` `uint unLen;` `uchar buff[4];` `buff[0] = PICC_HALT;` `buff[1] = 0;` `CalulateCRC(buff, 2, &buff[2]);` `status = MFRC522_ToCard(PCD_TRANSCEIVE, buff, 4, buff,&unLen);` `}`

2013.11.05 這邊補充一下好心人寄信來給我整理的表格，接的時候注意一下板子的版本

要特別注意MEGA2560和UNO設定port不同

程式碼第12行那邊

燒寫程式碼後從Tools開啟Serial Monitor如下

程式碼第125行有 Serial.begin(57600) 如果是這樣你就要選57600 或是如下圖改成9600 程式碼跟mopnitor數字要一樣才讀的到

注意紅框處設定要一樣

綠框處是分別感應白卡要鑰匙扣的結果

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