智能卡RC500读卡程序Word格式文档下载.docx

1、 RST_RC500=1; / reset RC500 Delay_10us（200）; / wait RST_RC500=0; / clear reset pin st_data=ReadRC（RegPage）; if （st_data=0x80） break; while（-ii）; ii=5000; do WriteRC（RegPage,0x00）; / Dummy access in order to determine the bus st_data= ReadRC（RegCommand）; if （!st_data） break; / configuration / necessa

2、ry read access / after first write access, the returned value / should be zero = interface recognized if （st_data） status = MI_INTERFACEERR; else status = 0; if（!status） XBYTERegClockQControl=0x0; XBYTERegClockQControl=0x40; Delay_10us（5）; ClearBitMask（RegClockQControl,0x40）; / clear bit ClkQCalib f

3、or XBYTERegBitPhase=0xAd; XBYTERegRxThreshold=0xFF; XBYTERegRxControl2=01; XBYTERegFIFOLevel=0x1A; / initialize to 26d XBYTERegTimerControl=0x02; / TStopRxEnd=0,TStopRxBeg=0, XBYTERegIRqPinConfig=0x3; / interrupt active low enable status=PcdRfReset（1）; / Rf - reset and enable output driver return st

4、atus;unsigned char Mf500PiccRequest（unsigned char req_code, unsigned char *atq） unsigned char D_data status = MI_OK; PcdSetTmo（2）; WriteRC（RegChannelRedundancy,0x03）; / RxCRC and TxCRC disable, parity enable ClearBitMask（RegControl,0x08）; / disable crypto 1 unit WriteRC（RegBitFraming,0x07）; / set Tx

5、LastBits to 7 ResetInfo（）; MSndBuffer0 = req_code; MInfo.nBytesToSend = 1; status = PcdSingleResponseCmd（PCD_TRANSCEIVE）; if （status） / error occured atq0 = 0; if （MInfo.nBitsReceived != 16） / 2 bytes expected atq0 = 0; status = MI_BITCOUNTERR; else status = MI_OK; memcpy（atq,MRcvBuffer,2）; return s

6、tatus;unsigned char Mf500PiccCascSelect（unsigned char select_code,unsigned char *snr, unsigned char *sak）/ if （CardSortChar=102）/1102卡不需要/ return 0; WriteRC（RegChannelRedundancy,0x0F）; / RxCRC,TxCRC, Parity enable MSndBuffer0 = select_code; MSndBuffer1 = 0x70; / number of bytes send memcpy（MSndBuffe

7、r+2,snr,4）; MSndBuffer6 = MSndBuffer2 MSndBuffer3 MSndBuffer4 MSndBuffer5; MInfo.nBytesToSend = 7; sak0 = 0; if （status = MI_OK） / no timeout occured= 8） / last byte is not complete sak0 = MRcvBuffer0;/ memcpy（MLastSelectedSnr,snr,4）;unsigned char Mf500PiccAnticoll （unsigned char bcnt, unsigned char

8、 *snr） return Mf500PiccCascAnticoll（0x93,bcnt,snr）; / first cascade levelunsigned char Mf500PiccCascAnticoll （unsigned char select_code,unsigned char bcnt,unsigned char *snr） unsigned char D_data snr_in4; / copy of the input parameter snr unsigned char D_data nbytes = 0; / how many bytes received un

9、signed char D_data nbits = 0; / how many bits received unsigned char D_data complete = 0; / complete snr recived unsigned char D_data i = 0; unsigned char D_data byteOffset = 0; unsigned char D_data snr_crc; / check byte calculation unsigned char D_data snr_check; unsigned char D_data dummyShift1; /

10、 dummy byte for snr shift unsigned char D_data dummyShift2; memcpy（snr_in,snr,4）; WriteRC（RegDecoderControl,0x28）; / ZeroAfterColl aktivieren complete=0; while （!complete & （status = MI_OK） ） nbits = bcnt % 8; if （nbits） WriteRC（RegBitFraming,nbits 4 | nbits）; / TxLastBits/RxAlign auf nb_bi nbytes =

11、 bcnt / 8 + 1; if （nbits = 7 ） MInfo.cmd = PICC_ANTICOLL1; / pass command flag to ISR WriteRC（RegBitFraming,nbits）; / reset RxAlign to zero nbytes = bcnt / 8; MSndBuffer1 = 0x20 + （bcnt/8） 4） + nbits; /number of bytes send memcpy （MSndBuffer+2,snr_in,nbytes）; MInfo.nBytesToSend = 2 + nbytes; / in or

12、der to solve an inconsistancy in the anticollision sequence / （will be solved soon）, the case of 7 bits has to be treated in a / separate way if （nbits = 7） / reorder received bits dummyShift1 = 0x00; for （i = 0; i （i+1） | （MRcvBufferi 0） nms=1000*nms; Delay_10us（nms）; SetBitMask（RegTxControl,0x03）;

13、void PcdSetTmo（unsigned char tmoLength） switch（tmoLength） / timer clock frequency 13,56 MHz case 1: / short timeout （1,0 ms） WriteRC（RegTimerClock,0x07）; / TAutoRestart=0,TPrescale=128 WriteRC（RegTimerReload,0x6a）;/ TReloadVal = h6a =106（dec） break; case 2: / medium timeout （1,5 ms） WriteRC（RegTimer

14、Reload,0xa0）;ha0 =160（dec） case 3: / long timeout （6 ms） WriteRC（RegTimerClock,0x09）; / TAutoRestart=0,TPrescale=4*128 case 4: / long timeout （19.2 ms） WriteRC（RegTimerClock,0x0a）; WriteRC（RegTimerReload,0xff）;ff =255（dec） case 5: / long timeout （38.4 ms） WriteRC（RegTimerClock,0x0b）; / TAutoRestart=

15、0,TPrescale=4*4*128 WriteRC（RegTimerReload,0xff）; break; case 6: / long timeout （76.8 ms） WriteRC（RegTimerClock,0x0c）; / TAutoRestart=0,TPrescale=2*4*4*128 case 7: / long timeout （153.6 ms） WriteRC（RegTimerClock,0x0d）; / TAutoRestart=0,TPrescale=2*2*4*4*128 default: WriteRC（RegTimerClock,0x07）; Writ

16、eRC（RegTimerReload,tmoLength）;/ TReloadVal = tmoLengthvoid ResetInfo（void） MInfo.cmd = 0; MInfo.status = MI_OK; MInfo.irqSource = 0; MInfo.nBytesSent = 0; MInfo.nBytesToSend = 0; MInfo.nBytesReceived = 0; MInfo.nBitsReceived = 0; MInfo.collPos = 0; unsigned char PcdSingleResponseCmd（unsigned char cm

17、d） unsigned char D_data tmpStatus ; unsigned char D_data lastBits; unsigned char D_data irqEn = 0x00; unsigned char D_data waitFor = 0x00; unsigned char D_data timerCtl = 0x00; unsigned int D_data ii=50000; WriteRC（RegInterruptEn,0x7F）; / disable all interrupts WriteRC（RegInterruptRq,0x7F）; / reset

18、interrupt requests WriteRC（RegCommand,PCD_IDLE）; / terminate probably running command FlushFIFO（）; / flush FIFO buffer haveset=1; / initialising the ISR-Function pointer for mifare / protocol - do this after initialising the MpXXXX variables MInfo.irqSource = 0x0; / reset interrupt flags / depending on the command code, appropria