fanka.rar_500wk3. com_mfrc500

/*--------------------------------------------------------------------------- Copyright (c), Philips Semiconductors Gratkorn mfrc500或fm1702基本函数库 ------------------------------------------------------------------------------*/ #define DLL_EXPORT // library source module definition #include <main.h> #include <Mfreg500.h> #include <M500A.h> #include <RdIo.h> #include <string.h> //#include <stdio.h> #include "PORT.h" #include "DELAY.h" //////////////////////////////////////////////////////////////////////////////// // M O D U L E D E F I N I T I O N //////////////////////////////////////////////////////////////////////////////// // COMMENT: This library module is modified from the original source code for a // microcontroller C164 CI, to suit the general purpose 8051 mcu. // The source can be ported to other platforms very easily. // The communication channel to the RC500 reader IC is assumed to be // unknown. All data is written with the generic IO functions // of the module ReaderIO.h. In our case the reader module is // connected via memory mapped io at base address 0x7f00. // The interrupt pin of the reader IC is assumed to be connected to // the fast external interrupt pin INT0# (active low) and the reset // pin of the reader IC should be connected to a dedicated port pin // (Port3: Pin: 3). // In this configuration, a reset of the reader module is independend // from the reset of the microcontroller. // In order to generate communication timeouts, // general purpose timer 2 of the microcontroller is used. This // timer need not to be initialised in advance. Before every usage // the timer is completely initialised in each function. // Non of the timers is essential for the functionality of the reader // module, but are helpful furing software development. All protocoll // relevant timing constraints are generated // by the internal timer of the reader module. // // Some explanations to the programming method of this library. // There are three kind of functions coded in this module. // a) internal functions, which have no prototypes in a header // file and are not intended to be used outside of this file // b) commands, which are intended for the reader module itself // c) commands, which are intended for any tag in the rf field. // These commands are send to the reader and the reader module // transmitts the data to the rf interface. // Commands for the reader and for the tag have the appropriate // prefix (PCD for proximity coupled device or reader module // PICC for proximity integrated circuit card or tag) // and their protypes are defined in the header file. // Each command for a PICC consists of a PCD command. Therefore // the function M500PcdCmd is very important for the understanding // of the communication. // // The basic functionality is provided by the interrupt service // routine (ISR), which closely works together with the function // M500PcdCmd. All kinds of interrupts are serviced by the // same ISR. // inline structure in order to reset the communication channel between // function and ISR #define ResetInfo(info) \ info.cmd = 0; \ info.status = MI_OK;\ info.irqSource = 0; \ info.nBytesSent = 0; \ info.nBytesToSend = 0; \ info.nBytesReceived = 0; \ info.nBitsReceived = 0; \ info.collPos = 0; // struct definition for a communication channel between function and ISR typedef struct { tByte cmd; //!< command code char status; // communication status tByte nBytesSent; // how many bytes already sent tByte nBytesToSend; // how many bytes to send tByte nBytesReceived;// how many bytes received unsigned short nBitsReceived; // how many bits received tByte irqSource; // which interrupts have occured tByte collPos; // at which position occured a // collision } MfCmdInfo; // modul variables extern tByte xdata *GpBase; static tByte idata MFIFOLength = DEF_FIFO_LENGTH; // actual FIFO length static tByte xdata MKeys[16][12]; // storage for authentication keys // in order to provide a calling // compatible interface to old libraries // Other reader modules keep several sets // of keys in an E2PROM. In this case, // these keys are stored in the uC and // transfered to the reader module // before authentication // Infomation concerning data processing // send buffer for general use static volatile tByte xdata MSndBuffer[SND_BUF_LEN]; // receive buffer for general use static volatile tByte xdata MRcvBuffer[RCV_BUF_LEN]; // info struct for general use static volatile MfCmdInfo MInfo; // Interrupt service routine // Variable in order to exchange data between function and ISR static volatile MfCmdInfo *MpIsrInfo = 0; // ISR send buffer static volatile tByte *MpIsrOut = 0; // ISR receive buffer static volatile tByte *MpIsrIn = 0; // storage of the last selected serial number including check byte. //For multi level serial numbers, only the first 4 bytes are stored. tByte MLastSelectedSnr[5]; // Timer 2 bit T2IR = 0; // Timer2 timeout flag unsigned int CountDown = 0; // Timeout counter with 50us resolution /////////////////////////////////////////////////////////////////////////////// // Prototypes for local functions /////////////////////////////////////////////////////////////////////////////// void start_timeout(unsigned int _50us); void stop_timeout(void); // _____________________________________________________________________________ // // FUNCTION: M500PcdSetTmo // IN: tmoLength 1 ... 1.0 ms timeout periode // 2 ... 1.5 ms timeout periode // 3 ... 6.0 ms timeout periode // 4 ... 9.6 ms timeout period // 5 ... 38.5 ms timeout period // 6 ... 154 ms timeout period // 7 ... 616.2 ms timeout period // OUT: - // RETURN: // COMMENT: Set timeout length of the reader internal timer. // void M500PcdSetTmo(tByte tmoLength); // _____________________________________________________________________________ // // FUNCTION: M500PcdCmd // IN: cmd PCD_IDLE // PCD_WRITEE2 // PCD_READE2 // PCD_LOADCONFIG // PCD_LOADKEYE2 // PCD_AUTHENT1 // PCD_CALCCRC // PCD_AUTHENT2 // PCD_RECEIVE // PCD_LOADKEY // PCD_TRANSMIT // PCD_TRANSCEIVE // PCD_RESETPHASE // for a detailed description of the parameter values, please // have a look on the header file of the reader register // definitions. // send byte stream of variable l