text: /**************************************************************************
  *
  * Copyright (C) 2012 Steve Karg <skarg@users.sourceforge.net>
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
  * "Software"), to deal in the Software without restriction, including
  * without limitation the rights to use, copy, modify, merge, publish,
  * distribute, sublicense, and/or sell copies of the Software, and to
  * permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
  *
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *********************************************************************/
  #ifndef DATALINK_H
  #define DATALINK_H
  
  #include "config.h"
  #include "bacdef.h"
  
  #if defined(BACDL_ETHERNET)
  #include "ethernet.h"
  
  #define datalink_init ethernet_init
  #define datalink_send_pdu ethernet_send_pdu
  #define datalink_receive ethernet_receive
  #define datalink_cleanup ethernet_cleanup
  #define datalink_get_broadcast_address ethernet_get_broadcast_address
  #define datalink_get_my_address ethernet_get_my_address
  
  #elif defined(BACDL_ARCNET)
  #include "arcnet.h"
  
  #define datalink_init arcnet_init
  #define datalink_send_pdu arcnet_send_pdu
  #define datalink_receive arcnet_receive
  #define datalink_cleanup arcnet_cleanup
  #define datalink_get_broadcast_address arcnet_get_broadcast_address
  #define datalink_get_my_address arcnet_get_my_address
  
  #elif defined(BACDL_MSTP)
  #include "dlmstp.h"
  
  #define datalink_init dlmstp_init
  #define datalink_send_pdu dlmstp_send_pdu
  #define datalink_receive dlmstp_receive
  #define datalink_cleanup dlmstp_cleanup
  #define datalink_get_broadcast_address dlmstp_get_broadcast_address
  #define datalink_get_my_address dlmstp_get_my_address
  
  #elif defined(BACDL_BIP)
  #include "bip.h"
  #include "bvlc.h"
  
  #define datalink_init bip_init
  #if 0 && defined(BBMD_ENABLED) && BBMD_ENABLED
  #define datalink_send_pdu bvlc_send_pdu
  #define datalink_receive bvlc_receive
  #else
  #define datalink_send_pdu bip_send_pdu
  #define datalink_receive bip_receive
  #endif
  #define datalink_cleanup bip_cleanup
  #define datalink_get_broadcast_address bip_get_broadcast_address
  #ifdef BAC_ROUTING
  extern void routed_get_my_address(
      BACNET_ADDRESS * my_address);
  #define datalink_get_my_address routed_get_my_address
  #else
  #define datalink_get_my_address bip_get_my_address
  #endif
  
  #elif defined(BACDL_BIP6)
  #include "bip6.h"
  #include "bvlc6.h"
  #define datalink_init bip6_init
  #define datalink_send_pdu bip6_send_pdu
  #define datalink_receive bip6_receive
  #define datalink_cleanup bip6_cleanup
  #define datalink_get_broadcast_address bip6_get_broadcast_address
  #define datalink_get_my_address bip6_get_my_address
  
  
  #else /* Ie, BACDL_ALL */
  #include "npdu.h"
  
  #define MAX_HEADER (8)
  #define MAX_MPDU (MAX_HEADER+MAX_PDU)
  
  #ifdef __cplusplus
  extern "C" {
  #endif /* __cplusplus */
  
      int datalink_send_pdu(
          BACNET_ADDRESS * dest,
          BACNET_NPDU_DATA * npdu_data,
          uint8_t * pdu,
          unsigned pdu_len);
      extern uint16_t datalink_receive(
          BACNET_ADDRESS * src,
          uint8_t * pdu,
          uint16_t max_pdu,
          unsigned timeout);
      extern void datalink_cleanup(
          void);
      extern void datalink_get_broadcast_address(
          BACNET_ADDRESS * dest);
      extern void datalink_get_my_address(
          BACNET_ADDRESS * my_address);
      extern void datalink_set_interface(
          char *ifname);
      extern void datalink_set(
          char *datalink_string);
  
  #ifdef __cplusplus
  }
  #endif /* __cplusplus */
  #endif
  /** @defgroup DataLink The BACnet Network (DataLink) Layer
   * <b>6 THE NETWORK LAYER </b><br>
   * The purpose of the BACnet network layer is to provide the means by which
   * messages can be relayed from one BACnet network to another, regardless of
   * the BACnet data link technology in use on that network. Whereas the data
   * link layer provides the capability to address messages to a single device
   * or broadcast them to all devices on the local network, the network layer
   * allows messages to be directed to a single remote device, broadcast on a
   * remote network, or broadcast globally to all devices on all networks.
   * A BACnet Device is uniquely located by a network number and a MAC address.
   *
   * Each client or server application must define exactly one of these
   * DataLink settings, which will control which parts of the code will be built:
   * - BACDL_ETHERNET -- for Clause 7 ISO 8802-3 ("Ethernet") LAN
   * - BACDL_ARCNET   -- for Clause 8 ARCNET LAN
   * - BACDL_MSTP     -- for Clause 9 MASTER-SLAVE/TOKEN PASSING (MS/TP) LAN
   * - BACDL_BIP      -- for ANNEX J - BACnet/IP
   * - BACDL_ALL      -- Unspecified for the build, so the transport can be
   *                     chosen at runtime from among these choices.
   * - Clause 10 POINT-TO-POINT (PTP) and Clause 11 EIA/CEA-709.1 ("LonTalk") LAN
   *   are not currently supported by this project.
                                                *//** @defgroup DLTemplates DataLink Template Functions
   * @ingroup DataLink
   * Most of the functions in this group are function templates which are assigned
   * to a specific DataLink network layer implementation either at compile time or
   * at runtime.
   */
  #endif
  