"模板:Arduino:MFRC522-LoadCell" 修訂間的差異
出自 陳富國維基館
(新頁面: =接腳方式= MFRC522接腳 ARDUINO接腳 SDA 10 SDK 13 MOSI 11 MISO 12 GND GND RST 5 3.3V 3V3 =程式碼= <source lang='c'...) |
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=接腳方式= | =接腳方式= | ||
| − | + | {| class="wikitable" width= 50% style="text-align: center;" | |
| − | SDA | + | |- |
| − | + | ! width="10%"|MFRC522 | |
| − | MOSI | + | !ARDUINO |
| − | MISO | + | |
| − | GND | + | |- |
| − | RST | + | |SDA |
| − | 3.3V | + | |10 |
| + | |||
| + | |- | ||
| + | |SCK/SS | ||
| + | |13 | ||
| + | |||
| + | |- | ||
| + | |MOSI | ||
| + | |11 | ||
| + | |||
| + | |- | ||
| + | |MISO | ||
| + | |12 | ||
| + | |||
| + | |- | ||
| + | |GND | ||
| + | |GND | ||
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| + | |- | ||
| + | |RST | ||
| + | |5 | ||
| + | |||
| + | |- | ||
| + | |3.3V | ||
| + | |3.3V | ||
| + | |||
| + | |} | ||
=程式碼= | =程式碼= | ||
於 2013年9月6日 (五) 16:46 的修訂
接腳方式
| MFRC522 | ARDUINO |
|---|---|
| SDA | 10 |
| SCK/SS | 13 |
| MOSI | 11 |
| MISO | 12 |
| GND | GND |
| RST | 5 |
| 3.3V | 3.3V |
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 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528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 | /* * 文 件 名：RFID.pde * 創 建 者：Dr.Leong ( WWW.B2CQSHOP.COM ) * 創建日期：2011.09.19 * 修 改 者： * 修改日期： * 功能描述：Mifare1 尋卡→防沖突→選卡→讀寫 接口 */ // the sensor communicates using SPI, so include the library:#include <SPI.h>#define uchar unsigned char#define uint unsigned int//數組最大長度#define MAX_LEN 16///////////////////////////////////////////////////////////////////////set the pin/////////////////////////////////////////////////////////////////////const int chipSelectPin = 10;const int NRSTPD = 5;//MF522命令字#define PCD_IDLE 0x00 //NO action;取消當前命令#define PCD_AUTHENT 0x0E //驗證密鑰#define PCD_RECEIVE 0x08 //接收數據#define PCD_TRANSMIT 0x04 //發送數據#define PCD_TRANSCEIVE 0x0C //發送並接收數據#define PCD_RESETPHASE 0x0F //復位#define PCD_CALCCRC 0x03 //CRC計算//Mifare_One卡片命令字#define PICC_REQIDL 0x26 //尋天線區內未進入休眠狀態#define PICC_REQALL 0x52 //尋天線區內全部卡#define PICC_ANTICOLL 0x93 //防沖撞#define PICC_SElECTTAG 0x93 //選卡#define PICC_AUTHENT1A 0x60 //驗證A密鑰#define PICC_AUTHENT1B 0x61 //驗證B密鑰#define PICC_READ 0x30 //讀塊#define PICC_WRITE 0xA0 //寫塊#define PICC_DECREMENT 0xC0 //扣款#define PICC_INCREMENT 0xC1 //充值#define PICC_RESTORE 0xC2 //調塊數據到緩沖區#define PICC_TRANSFER 0xB0 //保存緩沖區中數據#define PICC_HALT 0x50 //休眠//和MF522通訊時返回的錯誤代碼#define MI_OK 0#define MI_NOTAGERR 1#define MI_ERR 2//------------------MFRC522寄存器---------------//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字節卡序列號，第5字節為校驗字節uchar serNum[5];uchar writeData[16]={0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100}; //初始化 100元錢uchar moneyConsume = 18 ; //消費18元uchar moneyAdd = 10 ; //充值10元//扇區A密碼，16個扇區，每個扇區密碼6Byte uchar sectorKeyA[16][16] = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, //{0x19, 0x84, 0x07, 0x15, 0x76, 0x14}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, }; uchar sectorNewKeyA[16][16] = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0x19,0x84,0x07,0x15,0x76,0x14}, //you can set another ket , such as " 0x19, 0x84, 0x07, 0x15, 0x76, 0x14 " //{0x19, 0x84, 0x07, 0x15, 0x76, 0x14, 0xff,0x07,0x80,0x69, 0x19,0x84,0x07,0x15,0x76,0x14}, // but when loop, please set the sectorKeyA, the same key, so that RFID module can read the card {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0x19,0x33,0x07,0x15,0x34,0x14}, };char inputBuffer[20]; void setup() { Serial.begin(9600); // RFID reader SOUT pin connected to Serial RX pin at 2400bps // start the SPI library: 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 10 , Not Reset and Power-down digitalWrite(NRSTPD, HIGH); MFRC522_Init(); }void loop(){ uchar i,tmp; uchar status; uchar str[MAX_LEN]; uchar RC_size; uchar blockAddr; //選擇操作的塊地址0～63 String mynum = ""; while (Serial.available() > 0) { char c = Serial.read(); Serial.print(c); } //尋卡，返回卡類型 status = MFRC522_Request(PICC_REQIDL, str); if (status == MI_OK) { //Serial.println("Card detected"); //Serial.print(str[0],BIN); //Serial.print(" , "); //Serial.print(str[1],BIN); //Serial.println(" "); } //防沖撞，返回卡的序列號 4字節 status = MFRC522_Anticoll(str); memcpy(serNum, str, 5); if (status == MI_OK) { //buzzer analogWrite(3,20); delay(500); analogWrite(3,0); delay(500); Serial.println("The card's number is : "); Serial.print(serNum[0]); Serial.print(" , "); Serial.print(serNum[1],BIN); Serial.print(" , "); Serial.print(serNum[2],BIN); Serial.print(" , "); Serial.print(serNum[3],BIN); Serial.print(" , "); Serial.print(serNum[4],BIN); Serial.println(" "); // Should really check all pairs, but for now we'll just use the first// if(serNum[0] == 88) {// Serial.println("Hello Grant");// } else if(serNum[0] == 173) {// Serial.println("Hello David");// } delay(1000); } //Serial.println(" "); MFRC522_Halt(); //命令卡片進入休眠狀態 }/* * 函 數 名：Write_MFRC5200 * 功能描述：向MFRC522的某一寄存器寫一個字節數據 * 輸入參數：addr--寄存器地址﹔val--要寫入的值 * 返 回 值：無 */void Write_MFRC522(uchar addr, uchar val){ digitalWrite(chipSelectPin, LOW); //地址格式：0XXXXXX0 SPI.transfer((addr<<1)&0x7E); SPI.transfer(val); digitalWrite(chipSelectPin, HIGH);}/* * 函 數 名：Read_MFRC522 * 功能描述：從MFRC522的某一寄存器讀一個字節數據 * 輸入參數：addr--寄存器地址 * 返 回 值：返回讀取到的一個字節數據 */uchar Read_MFRC522(uchar addr){ uchar val; digitalWrite(chipSelectPin, LOW); //地址格式：1XXXXXX0 SPI.transfer(((addr<<1)&0x7E) | 0x80); val =SPI.transfer(0x00); digitalWrite(chipSelectPin, HIGH); return val; }/* * 函 數 名：SetBitMask * 功能描述：置RC522寄存器位 * 輸入參數：reg--寄存器地址;mask--置位值 * 返 回 值：無 */void SetBitMask(uchar reg, uchar mask) { uchar tmp; tmp = Read_MFRC522(reg); Write_MFRC522(reg, tmp | mask); // set bit mask}/* * 函 數 名：ClearBitMask * 功能描述：清RC522寄存器位 * 輸入參數：reg--寄存器地址;mask--清位值 * 返 回 值：無 */void ClearBitMask(uchar reg, uchar mask) { uchar tmp; tmp = Read_MFRC522(reg); Write_MFRC522(reg, tmp & (~mask)); // clear bit mask} /* * 函 數 名：AntennaOn * 功能描述：開啟天線,每次啟動或關閉天險發射之間應至少有1ms的間隔 * 輸入參數：無 * 返 回 值：無 */void AntennaOn(void){ uchar temp; temp = Read_MFRC522(TxControlReg); if (!(temp & 0x03)) { SetBitMask(TxControlReg, 0x03); }}/* * 函 數 名：AntennaOff * 功能描述：關閉天線,每次啟動或關閉天險發射之間應至少有1ms的間隔 * 輸入參數：無 * 返 回 值：無 */void AntennaOff(void){ ClearBitMask(TxControlReg, 0x03);}/* * 函 數 名：ResetMFRC522 * 功能描述：復位RC522 * 輸入參數：無 * 返 回 值：無 */void MFRC522_Reset(void){ Write_MFRC522(CommandReg, PCD_RESETPHASE);}/* * 函 數 名：InitMFRC522 * 功能描述：初始化RC522 * 輸入參數：無 * 返 回 值：無 */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初始值0x6363 ??? //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0 //Write_MFRC522(RxSelReg, 0x86); //RxWait = RxSelReg[5..0] //Write_MFRC522(RFCfgReg, 0x7F); //RxGain = 48dB AntennaOn(); //打開天線}/* * 函 數 名：MFRC522_Request * 功能描述：尋卡，讀取卡類型號 * 輸入參數：reqMode--尋卡方式， * TagType--返回卡片類型 * 0x4400 = Mifare_UltraLight * 0x0400 = Mifare_One(S50) * 0x0200 = Mifare_One(S70) * 0x0800 = Mifare_Pro(X) * 0x4403 = Mifare_DESFire * 返 回 值：成功返回MI_OK */uchar MFRC522_Request(uchar reqMode, uchar *TagType){ uchar status; uint backBits; //接收到的數據位數 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;}/* * 函 數 名：MFRC522_ToCard * 功能描述：RC522和ISO14443卡通訊 * 輸入參數：command--MF522命令字， * sendData--通過RC522發送到卡片的數據, * sendLen--發送的數據長度 * backData--接收到的卡片返回數據， * backLen--返回數據的位長度 * 返 回 值：成功返回MI_OK */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: //認證卡密 { irqEn = 0x12; waitIRq = 0x10; break; } case PCD_TRANSCEIVE: //發送FIFO中數據 { irqEn = 0x77; waitIRq = 0x30; break; } default: break; } Write_MFRC522(CommIEnReg, irqEn|0x80); //允許中斷請求 ClearBitMask(CommIrqReg, 0x80); //清除所有中斷請求位 SetBitMask(FIFOLevelReg, 0x80); //FlushBuffer=1, FIFO初始化 Write_MFRC522(CommandReg, PCD_IDLE); //NO action;取消當前命令 ??? //向FIFO中寫入數據 for (i=0; i<sendLen; i++) { Write_MFRC522(FIFODataReg, sendData[i]); } //執行命令 Write_MFRC522(CommandReg, command); if (command == PCD_TRANSCEIVE) { SetBitMask(BitFramingReg, 0x80); //StartSend=1,transmission of data starts } //等待接收數據完成 i = 2000; //i根據時鐘頻率調整，操作M1卡最大等待時間25ms ??? 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; } //讀取FIFO中接收到的數據 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;}/* * 函 數 名：MFRC522_Anticoll * 功能描述：防沖突檢測，讀取選中卡片的卡序列號 * 輸入參數：serNum--返回4字節卡序列號,第5字節為校驗字節 * 返 回 值：成功返回MI_OK */uchar MFRC522_Anticoll(uchar *serNum){ uchar status; uchar i; uchar serNumCheck=0; uint unLen; //ClearBitMask(Status2Reg, 0x08); //TempSensclear //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) { //校驗卡序列號 for (i=0; i<4; i++) { serNumCheck ^= serNum[i]; } if (serNumCheck != serNum[i]) { status = MI_ERR; } } //SetBitMask(CollReg, 0x80); //ValuesAfterColl=1 return status;} /* * 函 數 名：CalulateCRC * 功能描述：用MF522計算CRC * 輸入參數：pIndata--要讀數CRC的數據，len--數據長度，pOutData--計算的CRC結果 * 返 回 值：無 */void CalulateCRC(uchar *pIndata, uchar len, uchar *pOutData){ uchar i, n; ClearBitMask(DivIrqReg, 0x04); //CRCIrq = 0 SetBitMask(FIFOLevelReg, 0x80); //清FIFO指針 //Write_MFRC522(CommandReg, PCD_IDLE); //向FIFO中寫入數據 for (i=0; i<len; i++) { Write_MFRC522(FIFODataReg, *(pIndata+i)); } Write_MFRC522(CommandReg, PCD_CALCCRC); //等待CRC計算完成 i = 0xFF; do { n = Read_MFRC522(DivIrqReg); i--; } while ((i!=0) && !(n&0x04)); //CRCIrq = 1 //讀取CRC計算結果 pOutData[0] = Read_MFRC522(CRCResultRegL); pOutData[1] = Read_MFRC522(CRCResultRegM);}/* * 函 數 名：MFRC522_SelectTag * 功能描述：選卡，讀取卡存儲器容量 * 輸入參數：serNum--傳入卡序列號 * 返 回 值：成功返回卡容量 */uchar MFRC522_SelectTag(uchar *serNum){ uchar i; uchar status; uchar size; uint recvBits; uchar buffer[9]; //ClearBitMask(Status2Reg, 0x08); //MFCrypto1On=0 buffer[0] = PICC_SElECTTAG; buffer[1] = 0x70; for (i=0; i<5; i++) { buffer[i+2] = *(serNum+i); } CalulateCRC(buffer, 7, &buffer[7]); //?? status = MFRC522_ToCard(PCD_TRANSCEIVE, buffer, 9, buffer, &recvBits); if ((status == MI_OK) && (recvBits == 0x18)) { size = buffer[0]; } else { size = 0; } return size;}/* * 函 數 名：MFRC522_Auth * 功能描述：驗證卡片密碼 * 輸入參數：authMode--密碼驗證模式 0x60 = 驗證A密鑰 0x61 = 驗證B密鑰 BlockAddr--塊地址 Sectorkey--扇區密碼 serNum--卡片序列號，4字節 * 返 回 值：成功返回MI_OK */uchar MFRC522_Auth(uchar authMode, uchar BlockAddr, uchar *Sectorkey, uchar *serNum){ uchar status; uint recvBits; uchar i; uchar buff[12]; //驗證指令+塊地址＋扇區密碼＋卡序列號 buff[0] = authMode; buff[1] = BlockAddr; for (i=0; i<6; i++) { buff[i+2] = *(Sectorkey+i); } for (i=0; i<4; i++) { buff[i+8] = *(serNum+i); } status = MFRC522_ToCard(PCD_AUTHENT, buff, 12, buff, &recvBits); if ((status != MI_OK) || (!(Read_MFRC522(Status2Reg) & 0x08))) { status = MI_ERR; } return status;}/* * 函 數 名：MFRC522_Read * 功能描述：讀塊數據 * 輸入參數：blockAddr--塊地址;recvData--讀出的塊數據 * 返 回 值：成功返回MI_OK */uchar MFRC522_Read(uchar blockAddr, uchar *recvData){ uchar status; uint unLen; recvData[0] = PICC_READ; recvData[1] = blockAddr; CalulateCRC(recvData,2, &recvData[2]); status = MFRC522_ToCard(PCD_TRANSCEIVE, recvData, 4, recvData, &unLen); if ((status != MI_OK) || (unLen != 0x90)) { status = MI_ERR; } return status;}/* * 函 數 名：MFRC522_Write * 功能描述：寫塊數據 * 輸入參數：blockAddr--塊地址;writeData--向塊寫16字節數據 * 返 回 值：成功返回MI_OK */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++) //向FIFO寫16Byte數據 { 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;}/* * 函 數 名：MFRC522_Halt * 功能描述：命令卡片進入休眠狀態 * 輸入參數：無 * 返 回 值：無 */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);} |
