EVT_BACNET_IHAVE (STRUCT)¶

TYPE EVT_BACNET_IHAVE : STRUCT

Receives I-Have requests.

This is the type declaration for the I-Have service application hook. This hook allows an BACnet application to override the default processing of an I-Have service request. This hook is given all of the parameters of a service request, and is responsible for all error checking (addresses and service information correctness and any other service parameter given). A pointer to the routine is registered by BACnetcSetHook() API routine. A hook can be registered at any time. One hook procedure is registered per service. If a hook is registered more than once for the same service, the new hook procedure replaces old one. A NULL procedure pointer can be used to unregister the hook.

InOut:

Name	Type	Comment
`pCBStatus`	POINTER TO IEC_BACNET_CB_STATUS	CB-Status returned for the event. “Default” processes the standard APIs reaction, which needs no additional Callback-Signalling
`phTransaction`	POINTER TO BYTE	This is the Transaction State Machine (TSM) handle for the current service request. It is generated by the BACnet API and is the first parameter given to the Hook- Completion functions.
`sourceAddress`	POINTER TO IEC_BACNET_ADDRESS	This is the MAC address of the BACnet addressed device from which the request has been sent.
`destinationAddress`	POINTER TO IEC_BACNET_ADDRESS	This is the MAC address of the device constructed by the application which has received the request.
`pServiceInfo`	POINTER TO IEC_BACNET_I_HAVE_INFO	A pointer to the service information data structure which contains information about the source device and object the Device Instance Number, object Identifier sand object Name.