int ucov_notify_encode_pdu(
uint8_t * buffer,
BACNET_ADDRESS * dest,
BACNET_NPDU_DATA * npdu_data,
BACNET_COV_DATA * cov_data)
{
int len = 0;
int pdu_len = 0;
BACNET_ADDRESS my_address;
datalink_get_my_address(&my_address);
/* unconfirmed is a broadcast */
datalink_get_broadcast_address(dest);
/* encode the NPDU portion of the packet */
npdu_encode_npdu_data(npdu_data, false, MESSAGE_PRIORITY_NORMAL);
pdu_len = npdu_encode_pdu(&buffer[0], dest, &my_address, npdu_data);
/* encode the APDU portion of the packet */
len = ucov_notify_encode_apdu(&buffer[pdu_len], cov_data);
pdu_len += len;
return pdu_len;
}
static bool cov_send_request(
BACNET_COV_SUBSCRIPTION * cov_subscription,
BACNET_PROPERTY_VALUE * value_list)
{
int len = 0;
int pdu_len = 0;
BACNET_NPDU_DATA npdu_data;
BACNET_ADDRESS my_address;
int bytes_sent = 0;
uint8_t invoke_id = 0;
bool status = false; /* return value */
BACNET_COV_DATA cov_data;
if (!dcc_communication_enabled()) {
return status;
}
#if PRINT_ENABLED
fprintf(stderr, "COVnotification: requested\n");
#endif
datalink_get_my_address(&my_address);
npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
pdu_len =
npdu_encode_pdu(&Handler_Transmit_Buffer[0], &cov_subscription->dest,
&my_address, &npdu_data);
/* load the COV data structure for outgoing message */
cov_data.subscriberProcessIdentifier =
cov_subscription->subscriberProcessIdentifier;
cov_data.initiatingDeviceIdentifier = Device_Object_Instance_Number();
cov_data.monitoredObjectIdentifier.type =
cov_subscription->monitoredObjectIdentifier.type;
cov_data.monitoredObjectIdentifier.instance =
cov_subscription->monitoredObjectIdentifier.instance;
cov_data.timeRemaining = cov_subscription->lifetime;
cov_data.listOfValues = value_list;
if (cov_subscription->flag.issueConfirmedNotifications) {
invoke_id = tsm_next_free_invokeID();
if (invoke_id) {
cov_subscription->invokeID = invoke_id;
len =
ccov_notify_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
invoke_id, &cov_data);
} else {
goto COV_FAILED;
}
} else {
len =
ucov_notify_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
&cov_data);
}
pdu_len += len;
if (cov_subscription->flag.issueConfirmedNotifications) {
tsm_set_confirmed_unsegmented_transaction(invoke_id,
&cov_subscription->dest, &npdu_data, &Handler_Transmit_Buffer[0],
(uint16_t) pdu_len);
}
bytes_sent =
datalink_send_pdu(&cov_subscription->dest, &npdu_data,
&Handler_Transmit_Buffer[0], pdu_len);
if (bytes_sent > 0) {
status = true;
}
COV_FAILED:
return status;
}
