git.rot13.org Git - librfid/blob - src/rfid_layer2_iso15693.c

   1 /* ISO 15693 anticollision implementation
   2  *
   3  * (C) 2005-2006 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  */
   6
   7 /*
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2
  10  *  as published by the Free Software Foundation
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25
  26 #include <librfid/rfid.h>
  27 #include <librfid/rfid_layer2.h>
  28 #include <librfid/rfid_reader.h>
  29 #include <librfid/rfid_layer2_iso15693.h>
  30
  31 struct iso15693_request_read {
  32         struct iso15693_request req;
  33         u_int64_t uid;
  34         u_int8_t blocknum;
  35 } __attribute__ ((packed));
  36
  37 #define ISO15693_BLOCK_SIZE_MAX (256/8)
  38 #define ISO15693_RESP_SIZE_MAX  (4+ISO15693_BLOCK_SIZE_MAX)
  39
  40 #if 0
  41 static int
  42 iso15693_read_block(struct rfid_layer2_handle *handle,
  43                     u_int8_t blocknr, u_int32_t *data)
  44 {
  45         int rc;
  46         struct iso15693_request_read req;
  47         u_int8_t resp[ISO15693_RESP_SIZE_MAX];
  48
  49         req.req.flags = 0;
  50         req.command = ISO15693_CMD_READ_BLOCK_SINGLE;
  51         memcpy(&req.uid, handle->..., ISO15693_UID_LEN);
  52         req.blocknum = blocknr;
  53
  54         /* FIXME: fill CRC if required */
  55
  56         rc = iso15693_transceive(... &req, ...,  );
  57
  58         if (rc < 0)
  59                 return rc;
  60
  61         memcpy(data, resp+1, rc-1); /* FIXME rc-3 in case of CRC */
  62
  63         return rc-1;
  64 }
  65
  66 static int
  67 iso15693_write_block()
  68 {
  69         struct iso16593_request_read *rreq;
  70         u_int32_t buf[sizeof(req)+ISO15693_BLOCK_SIZE_MAX];
  71
  72         rreq = (struct iso15693_request_read *) req;
  73
  74         rreq->req.flags = ;
  75         rreq->req.command = ISO15693_CMD_WRITE_BLOCK_SINGLE;
  76         memcpy(rreq->uid, handle->, ISO15693_UID_LEN);
  77         rreq->blocknum = blocknr;
  78         memcpy(rreq->);
  79
  80 }
  81
  82 static int
  83 iso15693_lock_block()
  84 {
  85 }
  86
  87 #endif
  88
  89 static int
  90 iso15693_anticol(struct rfid_layer2_handle *handle)
  91 {
  92         return -1;
  93 }
  94
  95 static struct rfid_layer2_handle *
  96 iso15693_init(struct rfid_reader_handle *rh)
  97 {
  98         int ret;
  99         struct rfid_layer2_handle *h = malloc_layer2_handle(sizeof(*h));
 100         if (!h)
 101                 return NULL;
 102
 103         h->l2 = &rfid_layer2_iso15693;
 104         h->rh = rh;
 105         h->priv.iso15693.state = ISO15693_STATE_NONE;
 106         ret = h->rh->reader->iso15693.init(h->rh);
 107         if (ret < 0) {
 108                 free_layer2_handle(h);
 109                 return NULL;
 110         }
 111
 112         return h;
 113 }
 114
 115 static int
 116 iso15693_fini(struct rfid_layer2_handle *handle)
 117 {
 118         free_layer2_handle(handle);
 119         return 0;
 120 }
 121
 122
 123 const struct rfid_layer2 rfid_layer2_iso15693 = {
 124         .id     = RFID_LAYER2_ISO15693,
 125         .name   = "ISO 15693",
 126         .fn     = {
 127                 .init           = &iso15693_init,
 128                 .open           = &iso15693_anticol,
 129                 //.transceive   = &iso15693_transceive,
 130                 //.close                = &iso14443a_hlta,
 131                 .fini           = &iso15693_fini,
 132         },
 133 };
 134