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

   1 /* librfid - core reader handling
   2  * (C) 2005-2006 by Harald Welte <laforge@gnumonks.org>
   3  */
   4
   5 /*
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License version 2
   8  *  as published by the Free Software Foundation
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22
  23 #include <librfid/rfid.h>
  24 #include <librfid/rfid_reader.h>
  25 #include <librfid/rfid_reader_cm5121.h>
  26 #include <librfid/rfid_reader_openpcd.h>
  27
  28 static const struct rfid_reader *rfid_readers[] = {
  29 #ifdef ENABLE_CM5121
  30         [RFID_READER_CM5121]    = &rfid_reader_cm5121,
  31 #endif
  32         [RFID_READER_OPENPCD]   = &rfid_reader_openpcd,
  33 };
  34
  35 struct rfid_reader_handle *
  36 rfid_reader_open(void *data, unsigned int id)
  37 {
  38         const struct rfid_reader *p;
  39
  40         if (id >= ARRAY_SIZE(rfid_readers)) {
  41                 DEBUGP("unable to find matching reader\n");
  42                 return NULL;
  43         }
  44
  45         p = rfid_readers[id];
  46
  47         return p->open(data);
  48 }
  49
  50 int
  51 rfid_reader_transceive(struct rfid_reader_handle *rh,
  52                         enum rfid_frametype frametype,
  53                          const unsigned char *tx_buf, unsigned int len,
  54                          unsigned char *rx_buf, unsigned int *rx_len,
  55                          u_int64_t timeout, unsigned int flags)
  56 {
  57         return rh->reader->transceive(rh, frametype, tx_buf, len, rx_buf,
  58                                       rx_len, timeout, flags);
  59 }
  60
  61 void
  62 rfid_reader_close(struct rfid_reader_handle *rh)
  63 {
  64         rh->reader->close(rh);
  65 }