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   1 // ISO15693 commons
   2 // Adrian Dabrowski 2010 and others, GPLv2
   3
   4 #ifndef ISO15693_H__
   5 #define ISO15693_H__
   6
   7 // ISO15693 CRC
   8 #define ISO15693_CRC_PRESET  (uint16_t)0xFFFF
   9 #define ISO15693_CRC_POLY    (uint16_t)0x8408
  10 #define ISO15693_CRC_CHECK   ((uint16_t)(~0xF0B8 & 0xFFFF))  // use this for checking of a correct crc
  11
  12 uint16_t Iso15693Crc(uint8_t *v, int n);
  13 int Iso15693AddCrc(uint8_t *req, int n);
  14 char* Iso15693sprintUID(char *target,uint8_t *uid);
  15 unsigned short iclass_crc16(char *data_p, unsigned short length);
  16
  17 //-----------------------------------------------------------------------------
  18 // Map a sequence of octets (~layer 2 command) into the set of bits to feed
  19 // to the FPGA, to transmit that command to the tag.
  20 // Mode: highspeed && one subcarrier (ASK)
  21 //-----------------------------------------------------------------------------
  22
  23         // The sampling rate is 106.353 ksps/s, for T = 18.8 us
  24
  25         // SOF defined as
  26         // 1) Unmodulated time of 56.64us
  27         // 2) 24 pulses of 423.75khz
  28         // 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75khz)
  29
  30         static const int Iso15693FrameSOF[] = {
  31                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
  32                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
  33                  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
  34                  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
  35                 -1, -1, -1, -1,
  36                 -1, -1, -1, -1,
  37                  1,  1,  1,  1,
  38                  1,  1,  1,  1
  39         };
  40         static const int Iso15693Logic0[] = {
  41                  1,  1,  1,  1,
  42                  1,  1,  1,  1,
  43                 -1, -1, -1, -1,
  44                 -1, -1, -1, -1
  45         };
  46         static const int Iso15693Logic1[] = {
  47                 -1, -1, -1, -1,
  48                 -1, -1, -1, -1,
  49                  1,  1,  1,  1,
  50                  1,  1,  1,  1
  51         };
  52
  53         // EOF defined as
  54         // 1) logic '0' (8 pulses of 423.75khz followed by unmodulated for 18.88us)
  55         // 2) 24 pulses of 423.75khz
  56         // 3) Unmodulated time of 56.64us
  57
  58         static const int Iso15693FrameEOF[] = {
  59                  1,  1,  1,  1,
  60                  1,  1,  1,  1,
  61                 -1, -1, -1, -1,
  62                 -1, -1, -1, -1,
  63                  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
  64                  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
  65                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
  66                 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
  67         };
  68
  69
  70 #endif