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

   1 /* librfid - core reader handling
   2  * (C) 2005 by Harald Welte <laforge@gnumonks.org>
   3  */
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6
   7 #include <rfid/rfid.h>
   8 #include <rfid/rfid_reader.h>
   9
  10 static struct rfid_reader *rfid_reader_list;
  11
  12 struct rfid_reader_handle *
  13 rfid_reader_open(void *data, unsigned int id)
  14 {
  15         struct rfid_reader *p;
  16
  17         for (p = rfid_reader_list; p; p = p->next)
  18                 if (p->id == id)
  19                         return p->open(data);
  20
  21         DEBUGP("unable to find matching reader\n");
  22         return NULL;
  23 }
  24
  25 int
  26 rfid_reader_transcieve(struct rfid_reader_handle *rh,
  27                          const unsigned char *tx_buf, unsigned int len,
  28                          unsigned char *rx_buf, unsigned int *rx_len,
  29                          unsigned int timeout, unsigned int flags)
  30 {
  31         return rh->reader->transcieve(rh, tx_buf, len, rx_buf, rx_len,
  32                                         timeout, flags);
  33 }
  34
  35 int
  36 rfid_reader_close(struct rfid_reader_handle *rh)
  37 {
  38         return rh->reader->close(rh);
  39 }
  40
  41 int
  42 rfid_reader_register(struct rfid_reader *r)
  43 {
  44         r->next = rfid_reader_list;
  45         rfid_reader_list = r;
  46
  47         return 0;
  48 }