9.2-230 安装RFID射频识别传感器库

安装RFID射频识别库

2硬件接线1安装MFRC522库RFID示例程序解析2目录PART.1安装库RC522库安装RC522库安装PART.2示例程序解析函数的理解MFRC522程序主要函数：MFRC522物件.PCD_Init()：初始化MFRC522读卡器模块MFRC522物件.PICC_IsNewCardPresent()：是否感应到新的卡片MFRC522物件.PICC_ReadCardSerial()：读取卡片的资料MFRC522物件.PICC_GetType()：取得卡片类型MFRC522物件.PICC_GetTypeName()：取得卡片类型名称当读写器读到卡片的资料之后，UID的长度和内容，可从底下两个属性值取得：MFRC522物件.uid.size：包含UID的长度MFRC522物件.uid.uidByte：包含UID码的阵列读卡操作过程Mifare的关键词按感应距离分类紧耦合（close-coupled，需要紧贴感测器）接近式（proximity，10cm以內）邻近式（vicinity，50cm以內）PICC（ProximityICCard)接近式IC卡PCD（ProximityCouplingDevice)接近型耦合器非接触型IC卡12示例1-Dumplnfo#include<SPI.h>#include<MFRC522.h>constexpruint8_tRST_PIN=9;//Configurable,seetypicalpinlayoutaboveconstexpruint8_tSS_PIN=10;//Configurable,seetypicalpinlayoutaboveMFRC522mfrc522(SS_PIN,RST_PIN);//CreateMFRC522instance示例1-Dumplnfovoidsetup(){ Serial.begin(9600); //InitializeserialcommunicationswiththePC

while(!Serial); //Donothingifnoserialportisopened(addedforArduinosbasedonATMEGA32U4) SPI.begin(); //InitSPIbus mfrc522.PCD_Init(); //InitMFRC522 mfrc522.PCD_DumpVersionToSerial(); //ShowdetailsofPCD-MFRC522CardReaderdetails Serial.println(F("ScanPICCtoseeUID,SAK,type,anddatablocks..."));}14示例1-Dumplnfo voidloop(){ //Lookfornewcards if(!mfrc522.PICC_IsNewCardPresent()){ return; } //Selectoneofthecards if(!mfrc522.PICC_ReadCardSerial()){ return; } //Dumpdebuginfoaboutthecard;PICC_HaltA()isautomaticallycalled mfrc522.PICC_DumpToSerial(&(mfrc522.uid));}15示例1-Dumplnfo串口监视器观察卡内容卡内块分布17示例2-ReadNUID18示例2-ReadNUID#include<SPI.h>#include<MFRC522.h>constexpruint8_tRST_PIN=9;//Configurable,seetypicalpinlayoutaboveconstexpruint8_tSS_PIN=10;//Configurable,seetypicalpinlayoutabove

MFRC522rfid(SS_PIN,RST_PIN);//InstanceoftheclassMFRC522::MIFARE_Keykey;//InitarraythatwillstorenewNUIDbytenuidPICC[4];19示例2-ReadNUIDvoidsetup(){Serial.begin(9600);SPI.begin();//InitSPIbusrfid.PCD_Init();//InitMFRC522for(bytei=0;i<6;i++){key.keyByte[i]=0xFF;}Serial.println(F("ThiscodescantheMIFAREClasssicNUID."));Serial.print(F("Usingthefollowingkey:"));printHex(key.keyByte,MFRC522::MF_KEY_SIZE);}20示例2-ReadNUIDvoidloop(){//Lookfornewcardsif(!rfid.PICC_IsNewCardPresent())return;//VerifyiftheNUIDhasbeenreadedif(!rfid.PICC_ReadCardSerial())return;Serial.print(F("PICCtype:"));MFRC522::PICC_TypepiccType=rfid.PICC_GetType(rfid.uid.sak);Serial.println(rfid.PICC_GetTypeName(piccType));//CheckisthePICCofClassicMIFAREtypeif(piccType!=MFRC522::PICC_TYPE_MIFARE_MINI&&piccType!=MFRC522::PICC_TYPE_MIFARE_1K&&piccType!=MFRC522::PICC_TYPE_MIFARE_4K){Serial.println(F("YourtagisnotoftypeMIFAREClassic."));return;}if(rfid.uid.uidByte[0]!=nuidPICC[0]||rfid.uid.uidByte[1]!=nuidPICC[1]||rfid.uid.uidByte[2]!=nuidPICC[2]||rfid.uid.uidByte[3]!=nuidPICC[3]){Serial.println(F("Anewcardhasbeendetected."));//StoreNUIDintonuidPICCarrayfor(bytei=0;i<4;i++){nuidPICC[i]=rfid.uid.uidByte[i];}

Serial.println(F("TheNUIDtagis:"));Serial.print(F("Inhex:"));printHex(rfid.uid.uidByte,rfid.uid.size);Serial.println();Serial.print(F("Indec:"));printDec(rfid.uid.uidByte,rfid.uid.size);Serial.println();}elseSerial.println(F("Cardreadpreviously."));//HaltPICCrfid.PICC_HaltA();//StopencryptiononPCDrfid.PCD_StopCrypto1();}/***HelperroutinetodumpabytearrayashexvaluestoSerial.*/voidprintHex(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],HEX);}}/***HelperroutinetodumpabytearrayasdecvaluestoSerial.*/voidprintDec(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],DEC);}}21示例2-ReadNUID//CheckisthePICCofClassicMIFAREtypeif(piccType!=MFRC522::PICC_TYPE_MIFARE_MINI&&piccType!=MFRC522::PICC_TYPE_MIFARE_1K&&piccType!=MFRC522::PICC_TYPE_MIFARE_4K){Serial.println(F("YourtagisnotoftypeMIFAREClassic."));return;}if(rfid.uid.uidByte[0]!=nuidPICC[0]||rfid.uid.uidByte[1]!=nuidPICC[1]||rfid.uid.uidByte[2]!=nuidPICC[2]||rfid.uid.uidByte[3]!=nuidPICC[3]){Serial.println(F("Anewcardhasbeendetected."));//StoreNUIDintonuidPICCarrayfor(bytei=0;i<4;i++){nuidPICC[i]=rfid.uid.uidByte[i];}

Serial.println(F("TheNUIDtagis:"));Serial.print(F("Inhex:"));printHex(rfid.uid.uidByte,rfid.uid.size);Serial.println();Serial.print(F("Indec:"));printDec(rfid.uid.uidByte,rfid.uid.size);Serial.println();}elseSerial.println(F("Cardreadpreviously."));//HaltPICCrfid.PICC_HaltA();//StopencryptiononPCDrfid.PCD_StopCrypto1();}/***HelperroutinetodumpabytearrayashexvaluestoSerial.*/voidprintHex(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],HEX);}}/***HelperroutinetodumpabytearrayasdecvaluestoSerial.*/voidprintDec(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],DEC);}}22示例2-ReadNUID//StoreNUIDintonuidPICCarrayfor(bytei=0;i<4;i++){nuidPICC[i]=rfid.uid.uidByte[i];}

Serial.println(F("TheNUIDtagis:"));Serial.print(F("Inhex:"));printHex(rfid.uid.uidByte,rfid.uid.size);Serial.println();Serial.print(F("Indec:"));printDec(rfid.uid.uidByte,rfid.uid.size);Serial.println();}elseSerial.println(F("Cardreadpreviously."));//HaltPICCrfid.PICC_HaltA();//StopencryptiononPCDrfid.PCD_StopCrypto1();}/***HelperroutinetodumpabytearrayashexvaluestoSerial.*/voidprintHex(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],HEX);}}/***HelperroutinetodumpabytearrayasdecvaluestoSerial.*/voidprintDec(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){Serial.print(buffer[i]<0x10?"0":"");Serial.print(buffer[i],DEC);}}23示例3-ReadNUIDelseSerial.println(F("Cardreadpreviously."));//HaltPICCrfid.PICC_HaltA();//StopencryptiononPCDrfid.PCD_StopCrypto1();}/***HelperroutinetodumpabytearrayashexvaluestoSerial.*/voidprintHex(byte*buffer,bytebufferSize){for(bytei=0;i<bufferSize;i++){S