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467 lines
15 KiB
C
467 lines
15 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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/** @file device.h Defines functions for handling all BACnet objects belonging
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* to a BACnet device, as well as Device-specific properties. */
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#ifndef DEVICE_H
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#define DEVICE_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "bacdef.h"
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#include "bacenum.h"
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#include "wp.h"
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#include "rd.h"
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#include "rp.h"
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#include "rpm.h"
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#include "readrange.h"
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/** Called so a BACnet object can perform any necessary initialization.
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* @ingroup ObjHelpers
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*/
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typedef void (
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*object_init_function) (
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void);
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/** Counts the number of objects of this type.
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* @ingroup ObjHelpers
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* @return Count of implemented objects of this type.
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*/
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typedef unsigned (
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*object_count_function) (
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void);
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/** Maps an object index position to its corresponding BACnet object instance number.
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* @ingroup ObjHelpers
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* @param index [in] The index of the object, in the array of objects of its type.
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* @return The BACnet object instance number to be used in a BACNET_OBJECT_ID.
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*/
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typedef uint32_t(
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*object_index_to_instance_function)
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(
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unsigned index);
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/** Provides the BACnet Object_Name for a given object instance of this type.
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* @ingroup ObjHelpers
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* @param object_instance [in] The object instance number to be looked up.
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* @param object_name [in,out] Pointer to a character_string structure that
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* will hold a copy of the object name if this is a valid object_instance.
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* @return True if the object_instance is valid and object_name has been
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* filled with a copy of the Object's name.
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*/
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typedef bool(
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*object_name_function)
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(
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uint32_t object_instance,
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BACNET_CHARACTER_STRING * object_name);
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/** Look in the table of objects of this type, and see if this is a valid
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* instance number.
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* @ingroup ObjHelpers
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* @param [in] The object instance number to be looked up.
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* @return True if the object instance refers to a valid object of this type.
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*/
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typedef bool(
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*object_valid_instance_function) (
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uint32_t object_instance);
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/** Helper function to step through an array of objects and find either the
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* first one or the next one of a given type. Used to step through an array
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* of objects which is not necessarily contiguious for each type i.e. the
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* index for the 'n'th object of a given type is not necessarily 'n'.
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* @ingroup ObjHelpers
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* @param [in] The index of the current object or a value of ~0 to indicate
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* start at the beginning.
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* @return The index of the next object of the required type or ~0 (all bits
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* == 1) to indicate no more objects found.
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*/
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typedef unsigned (
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*object_iterate_function) (
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unsigned current_index);
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/** Look in the table of objects of this type, and get the COV Value List.
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* @ingroup ObjHelpers
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* @param [in] The object instance number to be looked up.
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* @param [out] The value list
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* @return True if the object instance supports this feature, and has changed.
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*/
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typedef bool(
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*object_value_list_function) (
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uint32_t object_instance,
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BACNET_PROPERTY_VALUE * value_list);
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/** Look in the table of objects for this instance to see if value changed.
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* @ingroup ObjHelpers
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* @param [in] The object instance number to be looked up.
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* @return True if the object instance has changed.
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*/
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typedef bool(
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*object_cov_function) (
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uint32_t object_instance);
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/** Look in the table of objects for this instance to clear the changed flag.
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* @ingroup ObjHelpers
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* @param [in] The object instance number to be looked up.
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*/
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typedef void (
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*object_cov_clear_function) (
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uint32_t object_instance);
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/** Intrinsic Reporting funcionality.
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* @ingroup ObjHelpers
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* @param [in] Object instance.
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*/
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typedef void (
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*object_intrinsic_reporting_function) (
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uint32_t object_instance);
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/** Defines the group of object helper functions for any supported Object.
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* @ingroup ObjHelpers
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* Each Object must provide some implementation of each of these helpers
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* in order to properly support the handlers. Eg, the ReadProperty handler
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* handler_read_property() relies on the instance of Object_Read_Property
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* for each Object type, or configure the function as NULL.
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* In both appearance and operation, this group of functions acts like
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* they are member functions of a C++ Object base class.
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*/
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typedef struct object_functions {
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BACNET_OBJECT_TYPE Object_Type;
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object_init_function Object_Init;
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object_count_function Object_Count;
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object_index_to_instance_function Object_Index_To_Instance;
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object_valid_instance_function Object_Valid_Instance;
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object_name_function Object_Name;
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read_property_function Object_Read_Property;
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write_property_function Object_Write_Property;
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rpm_property_lists_function Object_RPM_List;
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rr_info_function Object_RR_Info;
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object_iterate_function Object_Iterator;
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object_value_list_function Object_Value_List;
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object_cov_function Object_COV;
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object_cov_clear_function Object_COV_Clear;
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object_intrinsic_reporting_function Object_Intrinsic_Reporting;
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} object_functions_t;
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/* String Lengths - excluding any nul terminator */
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#define MAX_DEV_NAME_LEN 32
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#define MAX_DEV_LOC_LEN 64
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#define MAX_DEV_MOD_LEN 32
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#define MAX_DEV_VER_LEN 16
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#define MAX_DEV_DESC_LEN 64
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/** Structure to define the Object Properties common to all Objects. */
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typedef struct commonBacObj_s {
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/** The BACnet type of this object (ie, what class is this object from?).
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* This property, of type BACnetObjectType, indicates membership in a
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* particular object type class. Each inherited class will be of one type.
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*/
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BACNET_OBJECT_TYPE mObject_Type;
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/** The instance number for this class instance. */
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uint32_t Object_Instance_Number;
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/** Object Name; must be unique.
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* This property, of type CharacterString, shall represent a name for
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* the object that is unique within the BACnet Device that maintains it.
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*/
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char Object_Name[MAX_DEV_NAME_LEN];
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} COMMON_BAC_OBJECT;
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/** Structure to define the Properties of Device Objects which distinguish
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* one instance from another.
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* This structure only defines fields for properties that are unique to
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* a given Device object. The rest may be fixed in device.c or hard-coded
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* into the read-property encoding.
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* This may be useful for implementations which manage multiple Devices,
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* eg, a Gateway.
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*/
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typedef struct devObj_s {
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/** The BACnet Device Address for this device; ->len depends on DLL type. */
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BACNET_ADDRESS bacDevAddr;
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/** Structure for the Object Properties common to all Objects. */
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COMMON_BAC_OBJECT bacObj;
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/** Device Description. */
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char Description[MAX_DEV_DESC_LEN];
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/** The upcounter that shows if the Device ID or object structure has changed. */
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uint32_t Database_Revision;
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} DEVICE_OBJECT_DATA;
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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void Device_Init(
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object_functions_t * object_table);
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bool Device_Reinitialize(
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BACNET_REINITIALIZE_DEVICE_DATA * rd_data);
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BACNET_REINITIALIZED_STATE Device_Reinitialized_State(
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void);
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rr_info_function Device_Objects_RR_Info(
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BACNET_OBJECT_TYPE object_type);
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void Device_getCurrentDateTime(
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BACNET_DATE_TIME * DateTime);
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int32_t Device_UTC_Offset(void);
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bool Device_Daylight_Savings_Status(void);
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void Device_Property_Lists(
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const int **pRequired,
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const int **pOptional,
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const int **pProprietary);
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void Device_Objects_Property_List(
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BACNET_OBJECT_TYPE object_type,
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struct special_property_list_t *pPropertyList);
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/* functions to support COV */
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bool Device_Encode_Value_List(
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BACNET_OBJECT_TYPE object_type,
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uint32_t object_instance,
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BACNET_PROPERTY_VALUE * value_list);
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bool Device_Value_List_Supported(
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BACNET_OBJECT_TYPE object_type);
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bool Device_COV(
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BACNET_OBJECT_TYPE object_type,
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uint32_t object_instance);
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void Device_COV_Clear(
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BACNET_OBJECT_TYPE object_type,
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uint32_t object_instance);
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uint32_t Device_Object_Instance_Number(
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void);
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bool Device_Set_Object_Instance_Number(
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uint32_t object_id);
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bool Device_Valid_Object_Instance_Number(
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uint32_t object_id);
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unsigned Device_Object_List_Count(
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void);
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bool Device_Object_List_Identifier(
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unsigned array_index,
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int *object_type,
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uint32_t * instance);
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unsigned Device_Count(
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void);
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uint32_t Device_Index_To_Instance(
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unsigned index);
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bool Device_Object_Name(
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uint32_t object_instance,
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BACNET_CHARACTER_STRING * object_name);
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bool Device_Set_Object_Name(
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BACNET_CHARACTER_STRING * object_name);
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/* Copy a child object name, given its ID. */
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bool Device_Object_Name_Copy(
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BACNET_OBJECT_TYPE object_type,
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uint32_t object_instance,
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BACNET_CHARACTER_STRING * object_name);
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bool Device_Object_Name_ANSI_Init(const char * value);
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BACNET_DEVICE_STATUS Device_System_Status(
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void);
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int Device_Set_System_Status(
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BACNET_DEVICE_STATUS status,
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bool local);
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const char *Device_Vendor_Name(
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void);
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uint16_t Device_Vendor_Identifier(
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void);
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void Device_Set_Vendor_Identifier(
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uint16_t vendor_id);
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const char *Device_Model_Name(
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void);
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bool Device_Set_Model_Name(
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const char *name,
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size_t length);
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const char *Device_Firmware_Revision(
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void);
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const char *Device_Application_Software_Version(
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void);
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bool Device_Set_Application_Software_Version(
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const char *name,
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size_t length);
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const char *Device_Description(
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void);
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bool Device_Set_Description(
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const char *name,
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size_t length);
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const char *Device_Location(
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void);
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bool Device_Set_Location(
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const char *name,
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size_t length);
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/* some stack-centric constant values - no set methods */
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uint8_t Device_Protocol_Version(
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void);
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uint8_t Device_Protocol_Revision(
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void);
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BACNET_SEGMENTATION Device_Segmentation_Supported(
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void);
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uint32_t Device_Database_Revision(
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void);
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void Device_Set_Database_Revision(
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uint32_t revision);
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void Device_Inc_Database_Revision(
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void);
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bool Device_Valid_Object_Name(
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BACNET_CHARACTER_STRING * object_name,
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int *object_type,
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uint32_t * object_instance);
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bool Device_Valid_Object_Id(
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int object_type,
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uint32_t object_instance);
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int Device_Read_Property(
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BACNET_READ_PROPERTY_DATA * rpdata);
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bool Device_Write_Property(
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BACNET_WRITE_PROPERTY_DATA * wp_data);
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bool DeviceGetRRInfo(
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BACNET_READ_RANGE_DATA * pRequest, /* Info on the request */
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RR_PROP_INFO * pInfo); /* Where to put the information */
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int Device_Read_Property_Local(
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BACNET_READ_PROPERTY_DATA * rpdata);
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bool Device_Write_Property_Local(
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BACNET_WRITE_PROPERTY_DATA * wp_data);
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#if defined(INTRINSIC_REPORTING)
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void Device_local_reporting(
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void);
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#endif
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/* Prototypes for Routing functionality in the Device Object.
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* Enable by defining BAC_ROUTING in config.h and including gw_device.c
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* in the build (lib/Makefile).
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*/
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void Routing_Device_Init(
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uint32_t first_object_instance);
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uint16_t Add_Routed_Device(
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uint32_t Object_Instance,
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BACNET_CHARACTER_STRING * Object_Name,
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const char *Description);
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DEVICE_OBJECT_DATA *Get_Routed_Device_Object(
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int idx);
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BACNET_ADDRESS *Get_Routed_Device_Address(
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int idx);
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void routed_get_my_address(
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BACNET_ADDRESS * my_address);
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bool Routed_Device_Address_Lookup(
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int idx,
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uint8_t address_len,
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uint8_t * mac_adress);
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bool Routed_Device_GetNext(
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BACNET_ADDRESS * dest,
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int *DNET_list,
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int *cursor);
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bool Routed_Device_Is_Valid_Network(
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uint16_t dest_net,
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int *DNET_list);
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uint32_t Routed_Device_Index_To_Instance(
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unsigned index);
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bool Routed_Device_Valid_Object_Instance_Number(
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uint32_t object_id);
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bool Routed_Device_Name(
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uint32_t object_instance,
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BACNET_CHARACTER_STRING * object_name);
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uint32_t Routed_Device_Object_Instance_Number(
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void);
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bool Routed_Device_Set_Object_Instance_Number(
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uint32_t object_id);
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bool Routed_Device_Set_Object_Name(
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uint8_t encoding,
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const char *value,
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size_t length);
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bool Routed_Device_Set_Description(
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const char *name,
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size_t length);
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void Routed_Device_Inc_Database_Revision(
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void);
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int Routed_Device_Service_Approval(
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BACNET_CONFIRMED_SERVICE service,
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int service_argument,
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uint8_t * apdu_buff,
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uint8_t invoke_id);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/** @defgroup ObjFrmwk Object Framework
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* @ingroup bacnetmstp
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* The modules in this section describe the BACnet-stack's framework for
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* BACnet-defined Objects (Device, Analog Input, etc). There are two submodules
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* to describe this arrangement:
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* - The "object helper functions" which provide C++-like common functionality
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* to all supported object types.
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* - The interface between the implemented Objects and the BAC-stack services,
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* specifically the handlers, which are mediated through function calls to
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* the Device object.
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*//** @defgroup ObjHelpers Object Helper Functions
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* @ingroup ObjFrmwk
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* This section describes the function templates for the helper functions that
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* provide common object support.
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*//** @defgroup ObjIntf Handler-to-Object Interface Functions
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* @ingroup ObjFrmwk
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* This section describes the fairly limited set of functions that link the
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* BAC-stack handlers to the BACnet Object instances. All of these calls are
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* situated in the Device Object, which "knows" how to reach its child Objects.
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*
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* Most of these calls have a common operation:
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* -# Call Device_Objects_Find_Functions( for the desired Object_Type )
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* - Gets a pointer to the object_functions for this Type of Object.
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* -# Call the Object's Object_Valid_Instance( for the desired object_instance )
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* to make sure there is such an instance.
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* -# Call the Object helper function needed by the handler,
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* eg Object_Read_Property() for the RP handler.
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*
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*/
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#endif
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