Donatien Garnier / Mbed 2 deprecated RSEDP_DPDemo

RFID tracking with mbed & RS-EDP reference design

Dependencies:   RWDModule mbed SDCard

mifare/RWDMifare.cpp@0:fd63457452f4, 2010-07-28 (annotated)

Committer:
donatien
Date:
Wed Jul 28 11:02:36 2010 +0000
Revision:
0:fd63457452f4

        

        
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/*





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Copyright (c) 2010 ARM Limited





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Permission is hereby granted, free of charge, to any person obtaining a copy





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of this software and associated documentation files (the "Software"), to deal





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in the Software without restriction, including without limitation the rights





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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell





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copies of the Software, and to permit persons to whom the Software is





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furnished to do so, subject to the following conditions:





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    10

 





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The above copyright notice and this permission notice shall be included in





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all copies or substantial portions of the Software.





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    13

 





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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR





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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,





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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE





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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER





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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,





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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN





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THE SOFTWARE.





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*/





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#include "RWDMifare.h"





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RWDMifare::RWDMifare(PinName tx, PinName rx, PinName cts) : RWDModule(tx, rx, cts)





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{





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}





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RWDMifare::~RWDMifare()





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{





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}





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RWDMifare::RWDMifareErr RWDMifare::init()





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{





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  const uint8_t config[] = {0x03, 0x00}; //Configure ready for Mifare Op (0x00 to addr 0x03 in EEPROM)





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  uint8_t resp[64] = {0};





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  //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf





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  //Command 'P': cf p11





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  //EEPROM parameters: cf p12





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  //Ack check: cf p13





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  command(0x50, config, 2, resp, 0, 0x80, 0x89); //Program EEPROM command is 0x50 ('P')





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  while(!ready()) //Wait for a response





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  {





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  }





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  if(!result()) //If this fails, there is something wrong with the hardware





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  {





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    return MIFARE_HW;





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  }





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  return MIFARE_OK;





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}





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RWDMifare::RWDMifareErr RWDMifare::getUID(uint8_t* pUID, size_t* pLen) //pUID must be at least 10-bytes long 





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//(A Mifare UID can either be 4, 7, or 10 bytes long)





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//This reader does not support 10 bytes uids





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{





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  //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf





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  //Command 'U': cf p19





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  //Ack check: cf p13





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  command(0x55, NULL, 0, pUID, 7, 0x86, 0x86); //UID command is 0x55 ('U')





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  while(!ready()) //Wait for a response





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  {





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  }





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  if(!result()) //Error detected, there is no card in field





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  {





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    return MIFARE_NOCARD;





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  }





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  printf("Got card.\n");





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  //Checks UID length returned by reader





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  int i;





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  for(i = 0; i < 7; i++)





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  {





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    if(pUID[i] == 0) //End of UID, cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf p19





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      break;





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  }





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  *pLen = i;





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  return MIFARE_OK;





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}