common/iso15693tools.c

   1 //-----------------------------------------------------------------------------
   2 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   3 // at your option, any later version. See the LICENSE.txt file for the text of
   4 // the license.
   5 //-----------------------------------------------------------------------------
   6 // ISO15693 other commons
   7 //-----------------------------------------------------------------------------
   8 #include "iso15693tools.h"
   9
  10 #include <stdio.h>
  11
  12 // returns a string representation of the UID
  13 // UID is transmitted and stored LSB first, displayed MSB first
  14 // dest    char* buffer, where to put the UID, if NULL a static buffer is returned
  15 // uid[]     the UID in transmission order
  16 // return: ptr to string
  17 char *iso15693_sprintUID(char *dest, uint8_t *uid) {
  18     static char tempbuf[3 * 8 + 1] = {0};
  19     if (dest == NULL)
  20         dest = tempbuf;
  21
  22     if (uid) {
  23         sprintf(dest, "%02X %02X %02X %02X %02X %02X %02X %02X",
  24                 uid[7], uid[6], uid[5], uid[4],
  25                 uid[3], uid[2], uid[1], uid[0]
  26                );
  27     }
  28     return dest;
  29 }