skarg
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*********************************************************************/
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#include <stddef.h>
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#include <stdint.h>
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#include "config.h"
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#include "config.h"
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#include "txbuf.h"
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#include "bacdef.h"
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#include "bacdcode.h"
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#include "address.h"
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#include "tsm.h"
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#include "npdu.h"
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#include "apdu.h"
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#include "device.h"
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#include "datalink.h"
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#include "rp.h"
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/* some demo stuff needed */
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#include "handlers.h"
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#include "txbuf.h"
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/* returns false if device is not bound or no tsm available */
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bool Send_Read_Property_Request(
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uint32_t device_id, /* destination device */
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BACNET_OBJECT_TYPE object_type,
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uint32_t object_instance,
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BACNET_PROPERTY_ID object_property,
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int32_t array_index)
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{
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BACNET_ADDRESS dest;
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BACNET_ADDRESS my_address;
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unsigned max_apdu = 0;
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uint8_t invoke_id = 0;
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bool status = false;
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int pdu_len = 0;
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int bytes_sent = 0;
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BACNET_READ_PROPERTY_DATA data;
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/* is the device bound? */
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status = address_get_by_device(device_id, &max_apdu, &dest);
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/* is there a tsm available? */
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if (status)
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status = tsm_transaction_available();
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if (status)
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{
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datalink_get_my_address(&my_address);
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pdu_len = npdu_encode_apdu(
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&Handler_Transmit_Buffer[0],
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&dest,
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&my_address,
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true, // true for confirmed messages
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MESSAGE_PRIORITY_NORMAL);
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invoke_id = tsm_next_free_invokeID();
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// load the data for the encoding
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data.object_type = object_type;
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data.object_instance = object_instance;
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data.object_property = object_property;
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data.array_index = array_index;
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pdu_len += rp_encode_apdu(
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&Handler_Transmit_Buffer[pdu_len],
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invoke_id,
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&data);
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/* will it fit in the sender?
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note: if there is a bottleneck router in between
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us and the destination, we won't know unless
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we have a way to check for that and update the
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max_apdu in the address binding table. */
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if ((unsigned)pdu_len < max_apdu)
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{
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tsm_set_confirmed_unsegmented_transaction(
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invoke_id,
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&dest,
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&Handler_Transmit_Buffer[0],
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pdu_len);
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bytes_sent = datalink_send_pdu(
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&dest, // destination address
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&Handler_Transmit_Buffer[0],
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pdu_len); // number of bytes of data
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if (bytes_sent > 0)
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fprintf(stderr,"Sent ReadProperty Request!\n");
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else
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fprintf(stderr,"Failed to Send ReadProperty Request (%s)!\n",
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strerror(errno));
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}
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else
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fprintf(stderr,"Failed to Send ReadProperty Request "
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"(exceeds destination maximum APDU)!\n");
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}
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return status;
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}
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