BACnetStack_SendGetEventInformation

bool BACnetStack_SendGetEventInformation(
  uint8_t * sentInvokeId,
  const bool useLastReceivedObjectIdentifier,
  const uint16_t lastReceivedObjectType,
  const uint32_t lastReceivedObjectInstance,
  const uint8_t * connectionString,
  const uint8_t connectionStringLength,
  const uint32_t networkPortInstance,
  const uint16_t destinationNetwork,
  const uint8_t * destinationAddress,
  const uint8_t destinationAddressLength);

Sends a GetEventInformation request (cl. 13.12) to enumerate a device’s active events.

Paged: pass useLastReceivedObjectIdentifier=true with the last object from the previous ACK to fetch the next page.

See also: Client response hooks

BACnet reference: ANSI/ASHRAE 135-2024 clause 13.12 (GetEventInformation Service).

Parameters

Parameter	Direction	Description
`sentInvokeId`	out	The invoke-id of the sent request, valid only if this function returns true.
`useLastReceivedObjectIdentifier, lastReceivedObjectType, lastReceivedObjectInstance`	in	The paging cursor - pass useLastReceivedObjectIdentifier=false for the first page. The type and instance are one BACnet Object Identifier carried as two parameters (see the API conventions).
`connectionString, connectionStringLength`	in	The datalink address to send TO (the destination) - not the local address to send from. For IPv4 this is 6 bytes: 4 octets of IPv4 address followed by 2 octets of port, big-endian (e.g. 0xC0,0xA8,0x01,0x05,0xBA,0xC0 = 192.168.1.5:47808; see BACnetStack_SendRegisterForeignDevice() for a worked example); on BACnet/IPv4 the stack refuses to send to a connection string of any other length, except that a broadcast from a device registered as a foreign device goes to its BBMD and does not use the connection string. MS/TP and BACnet/SC use a different connection-string shape; see their respective Set/Send exports.
`networkPortInstance`	in	The Network Port object instance to send the message on, or BACNET_NETWORK_PORT_DEFAULT (4194303) for the default/single port.
`destinationNetwork, destinationAddress, destinationAddressLength`	in	The destination to send the request to.

Returns

True if the request was sent, otherwise false.

Topic: Client requests. Declared in CASBACnetStackDLL.h.