mirror of
https://github.com/stargieg/bacnet-stack
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115 lines
4.1 KiB
C
115 lines
4.1 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 <errno.h>
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#include <string.h>
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#include "event.h"
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#include "device.h"
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#include "datalink.h"
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#include "tsm.h"
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#include "dcc.h"
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#include "address.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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#include "client.h"
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/** @file s_cevent.c Send a ConfirmedEventNotification Request. */
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/** Sends an Confirmed Alarm/Event Notification.
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* @ingroup EVNOTFCN
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*
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* @param device_id [in] ID of the destination device
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* @param data [in] The information about the Event to be sent.
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* @return invoke id of outgoing message, or 0 if communication is disabled,
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* or no tsm slot is available.
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*/
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uint8_t Send_CEvent_Notify(
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uint32_t device_id,
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BACNET_EVENT_NOTIFICATION_DATA * data)
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{
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int len = 0;
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int pdu_len = 0;
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int bytes_sent = 0;
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BACNET_NPDU_DATA npdu_data;
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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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bool status = false;
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uint8_t invoke_id = 0;
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if (!dcc_communication_enabled())
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return 0;
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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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invoke_id = tsm_next_free_invokeID();
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if (invoke_id) {
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/* encode the NPDU portion of the packet */
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datalink_get_my_address(&my_address);
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npdu_encode_npdu_data(&npdu_data, true, MESSAGE_PRIORITY_NORMAL);
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pdu_len =
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npdu_encode_pdu(&Handler_Transmit_Buffer[0], &dest, &my_address,
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&npdu_data);
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/* encode the APDU portion of the packet */
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len =
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cevent_notify_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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invoke_id, data);
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pdu_len += len;
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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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tsm_set_confirmed_unsegmented_transaction(invoke_id, &dest,
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&npdu_data, &Handler_Transmit_Buffer[0], (uint16_t) pdu_len);
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bytes_sent =
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datalink_send_pdu(&dest, &npdu_data,
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&Handler_Transmit_Buffer[0], pdu_len);
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#if PRINT_ENABLED
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if (bytes_sent <= 0) {
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fprintf(stderr,
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"Failed to Send ConfirmedEventNotification Request (%s)!\n",
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strerror(errno));
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}
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#endif
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} else {
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tsm_free_invoke_id(invoke_id);
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invoke_id = 0;
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#if PRINT_ENABLED
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fprintf(stderr,
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"Failed to Send ConfirmedEventNotification Request "
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"(exceeds destination maximum APDU)!\n");
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#endif
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}
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}
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return invoke_id;
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}
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