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unsignedeharMf5OOCaseAniieoll(unsigned char selectcode£¬unsigned char bcnt unsigned char*snr)
{
Unsigned char complete; Unsigned char status; complete=0; status=MI_OK;
while((complete=0)&&(status=MI_OK)) {
nBytesReceived=0;
/*½ûÖ¹RxCRCºÍTxCRC£¬Ð£ÑéʹÄÜ*/ regwrite(RegChannelRedundancy£¬ox03): nbits=bent%8;//λ¸öÊý if(nbits) {
regwrite(RegBitFraming£¬nbits<<4nbits); nbytes=ben/8+1://×Ö½Ú¸öÊý } else
nbytes=bcnt/8; for(i=0;i NVB=0x20+(bcnt/8)<<4)+nbits;//Òª·¢Ë͵Ä×Ö½ÚÊý regwrite(ReglntemiptEn£¬ox7F;//½ûÖ¹ËùÓÐÖÐ¶Ï regwrite(ReglntemipRq£¬ox7F);//¸´Î»requestÖÐ¶Ï regwrite(Regcommand£¬PCD IDLE);//ÖÐÖ¹¿ÉÄÜÕýÔÚÔËÐеijÌÐò regwrite(RegControl£¬regread(Regcontrol)}ox0l);//Çå¿ÕFIFO regwrite(RegFIFOData,ox93);//дÈëSELÃüÁî´úÂë regwrite(RegFIFOData£¬NVB);//дÈëNVBÃüÁî´úÂë for(i=0:i regwrite(RegInterruptEn£¬ox84);//TimerIRqºÍIdleIRqʹÄÜ regwrite(RegCommand£¬pcD_CRANscEIVE)://ÃüÁʼִÐÐ mrc500_cnt==0x00; while((!(regreed(RegPrimaryStatus)&ox08))&&(mre500secnt<200)) mre500escnt+=1;//³¬Ê±»òÃüÁî½áÊøÅÐ¶Ï if(mrc500_cnt>=200)//³¬Ê±Ê±µÄ´¦Àí { regwrite(RegCommand£¬PCD_DLE);//ÖÐÖ¹³ÌÐò status=MI_ACCESSTIMEOUT: return status; } 36 ºþÄÏÈËÎĿƼ¼Ñ§Ôº±ÏÒµÂÛÎÄ£¨Éè¼Æ£© status=regread(RegErrorFlag)&ox07;//¶ÁÈ¡´íÎó±êÖ¾ //´íÎóÅÐ¶Ï if(status) { If(status&oxol) status=MI_COLERR;//ÅжÏΪ³åÍ»¼ì²â´íÎó if(status&ox02) status=MI_PARITYERR;//ÅжÏΪУÑé´íÎó if(status&0x04) status=MI_FRAMINGERR;//ÅжÏΪ֡´íÎó nBytesReceived=regread(RegFIFOLength)://¶ÁÈ¡Êý¾Ý³¤¶È for (i=0:i coll_data[i]=regread(RegFIFOData); if(regread(RegFIFOLength)>=ox04)//ÅжϽÓÊÕµÄÊý¾Ý³¤¶ÈÊÇ·ñÕýÈ· {for(status=0:status<4;status++) snr_nr[status]=regread(RegFIFOData); status=MI_OK; } ?? if(status=MI_OK) { memcpy(snr£¬snr_in£¬4);//±£´æsnr ?? } else memcpy(snr£¬¡±0000¡±,4); /*³åÍ»½ûÖ¹ºóÖÃ0*/ regwrite(RegDecderControl£¬regread(RegDecoderControl)&(}ox20)); regwrite(RegCommand£¬PCDwe IDLE)://ÖÐÖ¹³ÌÐò retomStatus; } ¸½ ¼3 Unsigned char Mf500CaseSelect(unsigned char select code£¬unsigned char*snr£¬unsigned char*sak) {?? regwdte(RegInterruptEn£¬ox7F)://½ûÖ¹ËùÓÐÖÐ¶Ï regwrite(RegInterruptRq£¬ox7F)://¸´Î»requestÖÐ¶Ï regwrite(RegCommand£¬PCD_DLE);//ÖÐÖ¹¿ÉÄÜÕýÔÚÔËÐеÄÆäËü³ÌÐò regwrite(RegControl£¬regread(RegControl)|oxol);//Çå¿ÕFIFO regwrite(RegFIFOData£¬ox93);//дÈëSELÃüÁî´úÂë regwrite(RegFIFOData£¬ox70);//дÈëNVBÃüÁî´úÂë for(satus=0;status<4;status++) regwrite(RegFIFOData,snr[status]);//дsnrµ½FIFO 37 ºþÄÏÈËÎĿƼ¼Ñ§Ôº±ÏÒµÂÛÎÄ£¨Éè¼Æ£© status=snr[0]^snr[l]^snr[2]^snr[3];//¼ÆËãBCC regwrite(RegFIFOData£¬status);//½«BCCдÈëFIFO regwrite(ReglnterruptEn£¬oxA4)://ʹÄÜTimerIRqºÍIdleIRq regwrite(RegCommand£¬PCD TRANSCEIVE);//ÃüÁʼִÐÐ mrc500_cnt=0x00: while((!(regread(RegPrimaryStatus)&0x08))&&(mre500_cnt<100)) mrc500_cnt+=l;//³¬Ê±»òÃüÁî½áÊøÅÐ¶Ï if(mrc 500_cnt>=100)//³¬Ê±Ê±µÄ´¦Àí { regwrite(RegCommand£¬PEDIDLE)://³¬Ê±Ê±ÖÐÖ¹³ÌÐò status=MI_ACCESSTIMEOUT;//Öó¬Ê±±êÖ¾ return status; } status=regread(RegErrorFlag)&ox07;//δ³¬Ê±Ê±¶ÁÈ¡´íÎó±êÖ¾ if (status) { if(status&oxol) status¡°MI_COLLERR;//ÅжÏΪ³åÍ»¼ì²â´íÎó if(status&0x02) status=MI_PARITYERR;//ÅжÏΪУÑé´íÎó if(status&0x04) status=MI_FRAMINGERR;//ÅжÏΪ֡´íÎó }else If (regread(RegFIFOLength)==oxol) {//ÅжϽÓÊÕÊý¾Ý³¤¶ÈÊÇ·ñÕýÈ· if(regread(RegFIFOData)&0x04) status=MI_SAKERR;//ÅжÏΪSAK´íÎó else status=MI_OK: }else status=MI BITCOUNTERR;//Êý¾Ý³¤¶È²»·ûºÏÔòΪ¼ÆÊý´íÎó regwrite(RegCommand£¬PCD_IDLE)://³ÌÐòÖÕÖ¹ return status; } ¸½ ¼4 unsignedeharMf500Read(unsigned char block_add£¬unsigned char value[]) { restart_Watch_Dog;//¸´Î»¿´ÃŹ· regwrite(RegInterruptEn£¬ox7F);//½ûÖ¹ËùÓÐÖÐ¶Ï regwrite(RegInterruptRq£¬ox7F)://¸´Î»requestÖÐ¶Ï rewrite(Regcommand£¬PCDweIDLE)://ÖÐÖ¹¿ÉÄÜÕýÔÚÔËÐеÄÆäËü³ÌÐò regwrite(RegControl£¬regread(RegControl)!ox0l);//Çå¿ÕFIFO regwrite(RegFIFOData£¬PICCee_READ)://дÈëreadÃüÁî regwrite(RegFIFOData£¬block_add);//дÈëblock_add²ÎÊý regwrite(RegInterruptEn£¬ox84)://ʹÄÜIdleIRqÖÐ¶Ï 38 ºþÄÏÈËÎĿƼ¼Ñ§Ôº±ÏÒµÂÛÎÄ£¨Éè¼Æ£© regwrite(RegCommand£¬PCD_TRANSCEIVE)://дÈëÃüÁî´úÂë mrc500_cnt=0; while((!(regread(RegPrimaryStatus)&ox08))&&(mrc500_cnt<200)) mrc500_cnt+=l;//³¬Ê±»òÃüÁî½áÊøÅÐ¶Ï if(mrc500_cnt>=200) { regwrite(RegCommand£¬PCD IDLE)://³¬Ê±Ê±µÄ´¦Àí status=MI_CCESSTIMEOUT; return status; } status=regread(RegErrorFlag)&ox0e;//¶ÁÈ¡´íÎó±êÖ¾ if(status) { if(status&ox02) status=MI_ACCESSTYERR;//ÅжÏΪУÑé´íÎó if(status&ox04) status=MI_FRAMINGERR;//ÅжÏΪ֡´íÎó if(status&ox08) status=MI_CRCERR;//ÅжÏΪCRC´íÎó } else { if(regread(RegFIFOLength)==ox10)//ÅжÏËù½ÓÊÕµ½µÄÊý¾Ý³¤¶ÈÊÇ·ñÕýÈ·ÖÝÊý¾Ý³¤¶ÈÕýȷʱµÄ´¦Àí for(status=0;status<16;status++) value[status]=regread(RegFIFOData);//¶ÁÈ¡Ò»¸öÉÈÇøÖеÄ1¸öÊý¾Ý¿é statu=MI_OK; } else status=MI_BITCOUNTERR;//ÖÃÊý¾Ý³¤¶È³ö´í±êÖ¾ } regwrite(RegCommand£¬PCD_IDLE)://³ÌÐòÖÕÖ¹ return status; } 39