pn531_usb.c

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00001 /*-
00002  * Public platform independent Near Field Communication (NFC) library
00003  * 
00004  * Copyright (C) 2009, Roel Verdult
00005  * 
00006  * This program is free software: you can redistribute it and/or modify it
00007  * under the terms of the GNU Lesser General Public License as published by the
00008  * Free Software Foundation, either version 3 of the License, or (at your
00009  * option) any later version.
00010  * 
00011  * This program is distributed in the hope that it will be useful, but WITHOUT
00012  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00013  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
00014  * more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public License
00017  * along with this program.  If not, see <http://www.gnu.org/licenses/>
00018  */
00019 
00025 /*
00026 Thanks to d18c7db and Okko for example code
00027 */
00028 
00029 #ifdef HAVE_CONFIG_H
00030   #include "config.h"
00031 #endif // HAVE_CONFIG_H
00032 
00033 #include <stdlib.h>
00034 
00035 #include "../drivers.h"
00036 #include <nfc/nfc-messages.h>
00037 
00038 nfc_device_desc_t * pn531_usb_pick_device (void)
00039 {
00040   nfc_device_desc_t *pndd;
00041 
00042   if ((pndd = malloc (sizeof (*pndd))))
00043   {
00044     size_t szN;
00045 
00046     if (!pn531_usb_list_devices (pndd, 1, &szN))
00047     {
00048       DBG("%s", "pn531_usb_list_devices failed");
00049       return NULL;
00050     }
00051 
00052     if (szN == 0)
00053     {
00054       DBG("%s", "No device found");
00055       return NULL;
00056     }
00057   }
00058   return pndd;
00059 }
00060 
00061 bool pn531_usb_list_devices(nfc_device_desc_t pnddDevices[], size_t szDevices, size_t *pszDeviceFound)
00062 {
00063   // array of {vendor,product} pairs for USB devices
00064   usb_candidate_t candidates[]= {{0x04CC,0x0531},{0x054c,0x0193}};
00065 
00066   return pn53x_usb_list_devices(&pnddDevices[0], szDevices, pszDeviceFound, &candidates[0], sizeof(candidates) / sizeof(usb_candidate_t),PN531_USB_DRIVER_NAME);
00067 }
00068 
00069 nfc_device_t* pn531_usb_connect(const nfc_device_desc_t* pndd)
00070 {
00071   return pn53x_usb_connect(pndd, pndd->acDevice, NC_PN531);
00072 }

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