Files
bacnet_stack/src/bacnet/basic/object/timer.c
T
Steve Karg 20f402f5b6 Fix lighting output commands for warn-off and warn-relinquish (#1212)
* Fixed lighting output object lighting-commands for warn-off and warn-relinquish when blink-warn notification shall not occur.

* Fixed timer object task to initiate a write-request at expiration.

* Added channel and timer object write-property observers in blinkt app to monitor internal writes.

* Added vacancy timer command line argument in blinkt app for testing initial timer object vacancy time for lights channel.
2026-01-28 06:39:02 -06:00

2401 lines
81 KiB
C

/**
* @file
* @author Steve Karg <skarg@users.sourceforge.net>
* @date October 2025
* @brief The Timer object type defines a standardized object whose properties
* represent the externally visible characteristics of a countdown timer.
* @copyright SPDX-License-Identifier: MIT
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <string.h>
#include <stdlib.h>
/* BACnet Stack defines - first */
#include "bacnet/bacdef.h"
/* BACnet Stack API */
#include "bacnet/bacdcode.h"
#include "bacnet/bacapp.h"
#include "bacnet/bactext.h"
#include "bacnet/datetime.h"
#include "bacnet/proplist.h"
#include "bacnet/timer_value.h"
/* basic objects and services */
#include "bacnet/basic/object/device.h"
#include "bacnet/basic/services.h"
#include "bacnet/basic/sys/debug.h"
#include "bacnet/basic/sys/keylist.h"
/* me! */
#include "bacnet/basic/object/timer.h"
#ifndef BACNET_TIMER_MANIPULATED_PROPERTIES_MAX
#define BACNET_TIMER_MANIPULATED_PROPERTIES_MAX 8
#endif
/* Key List for storing the object data sorted by instance number */
static OS_Keylist Object_List = NULL;
/* common object type */
static const BACNET_OBJECT_TYPE Object_Type = OBJECT_TIMER;
static write_property_function Write_Property_Internal_Callback;
/* Write Property notification callbacks for logging or other purposes */
static struct timer_write_property_notification
Write_Property_Notification_Head;
struct object_data {
uint32_t Present_Value;
BACNET_TIMER_STATE Timer_State;
BACNET_TIMER_TRANSITION Last_State_Change;
BACNET_DATE_TIME Update_Time;
uint32_t Initial_Timeout;
uint32_t Default_Timeout;
uint32_t Min_Pres_Value;
uint32_t Max_Pres_Value;
uint32_t Resolution;
/* The timer state change NONE=0 has no corresponding array element.*/
BACNET_TIMER_STATE_CHANGE_VALUE
State_Change_Values[TIMER_TRANSITION_MAX - 1];
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE
Manipulated_Properties[BACNET_TIMER_MANIPULATED_PROPERTIES_MAX];
uint8_t Priority_For_Writing;
const char *Description;
const char *Object_Name;
BACNET_RELIABILITY Reliability;
bool Out_Of_Service : 1;
bool Changed : 1;
void *Context;
};
/* These three arrays are used by the ReadPropertyMultiple handler */
static const int32_t Properties_Required[] = {
/* unordered list of required properties */
PROP_OBJECT_IDENTIFIER, PROP_OBJECT_NAME,
PROP_OBJECT_TYPE, PROP_PRESENT_VALUE,
PROP_STATUS_FLAGS, PROP_TIMER_STATE,
PROP_TIMER_RUNNING, -1
};
static const int32_t Properties_Optional[] = {
/* unordered list of optional properties */
PROP_DESCRIPTION,
PROP_RELIABILITY,
PROP_OUT_OF_SERVICE,
PROP_UPDATE_TIME,
PROP_LAST_STATE_CHANGE,
PROP_EXPIRATION_TIME,
PROP_INITIAL_TIMEOUT,
PROP_DEFAULT_TIMEOUT,
PROP_MIN_PRES_VALUE,
PROP_MAX_PRES_VALUE,
PROP_RESOLUTION,
PROP_STATE_CHANGE_VALUES,
PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES,
PROP_PRIORITY_FOR_WRITING,
-1
};
static const int32_t Properties_Proprietary[] = { -1 };
/* Every object shall have a Writable Property_List property
which is a BACnetARRAY of property identifiers,
one property identifier for each property within this object
that is always writable. */
static const int32_t Writable_Properties[] = {
/* unordered list of always writable properties */
PROP_PRESENT_VALUE,
PROP_OUT_OF_SERVICE,
PROP_DEFAULT_TIMEOUT,
PROP_MIN_PRES_VALUE,
PROP_MAX_PRES_VALUE,
PROP_RESOLUTION,
PROP_PRIORITY_FOR_WRITING,
PROP_STATE_CHANGE_VALUES,
PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES,
-1
};
/**
* Returns the list of required, optional, and proprietary properties.
* Used by ReadPropertyMultiple service.
*
* @param pRequired - pointer to list of int terminated by -1, of
* BACnet required properties for this object.
* @param pOptional - pointer to list of int terminated by -1, of
* BACnet optkional properties for this object.
* @param pProprietary - pointer to list of int terminated by -1, of
* BACnet proprietary properties for this object.
*/
void Timer_Property_Lists(
const int32_t **pRequired,
const int32_t **pOptional,
const int32_t **pProprietary)
{
if (pRequired) {
*pRequired = Properties_Required;
}
if (pOptional) {
*pOptional = Properties_Optional;
}
if (pProprietary) {
*pProprietary = Properties_Proprietary;
}
return;
}
/**
* @brief Get the list of writable properties for a Timer object
* @param object_instance - object-instance number of the object
* @param properties - Pointer to the pointer of writable properties.
*/
void Timer_Writable_Property_List(
uint32_t object_instance, const int32_t **properties)
{
(void)object_instance;
if (properties) {
*properties = Writable_Properties;
}
}
/**
* @brief Gets an object from the list using an instance number as the key
* @param object_instance - object-instance number of the object
* @return object found in the list, or NULL if not found
*/
static struct object_data *Object_Data(uint32_t object_instance)
{
return Keylist_Data(Object_List, object_instance);
}
/**
* Determines if a given Timer instance is valid
*
* @param object_instance - object-instance number of the object
*
* @return true if the instance is valid, and false if not
*/
bool Timer_Valid_Instance(uint32_t object_instance)
{
struct object_data *pObject = Object_Data(object_instance);
return (pObject != NULL);
}
/**
* Determines the number of Timer objects
*
* @return Number of Timer objects
*/
unsigned Timer_Count(void)
{
return Keylist_Count(Object_List);
}
/**
* Determines the object instance-number for a given 0..N index
* of Timer objects where N is Timer_Count().
*
* @param index - 0..MAX_PROGRAMS value
*
* @return object instance-number for the given index
*/
uint32_t Timer_Index_To_Instance(unsigned index)
{
KEY key = UINT32_MAX;
Keylist_Index_Key(Object_List, index, &key);
return key;
}
/**
* For a given object instance-number, determines a 0..N index
* of Timer objects where N is Timer_Count().
*
* @param object_instance - object-instance number of the object
*
* @return index for the given instance-number, or MAX_PROGRAMS
* if not valid.
*/
unsigned Timer_Instance_To_Index(uint32_t object_instance)
{
return Keylist_Index(Object_List, object_instance);
}
/**
* For a given object instance-number, determines if the member is empty
*
* Elements of the List_Of_Object_Property_References array containing
* object or device instance numbers equal to 4194303 are considered to
* be 'empty' or 'uninitialized'.
*
* @param pMember - object property reference element
* @return true if the member is empty
*/
static bool Timer_Reference_List_Member_Empty(
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember)
{
bool status = false;
if (pMember) {
if ((pMember->objectIdentifier.instance == BACNET_MAX_INSTANCE) ||
(pMember->deviceIdentifier.instance == BACNET_MAX_INSTANCE)) {
status = true;
}
}
return status;
}
/**
* For a given object instance-number, returns the list member element
* @param object_instance - object-instance number of the object
* @param list_index - 1-based list index of members
* @return pointer to list member element or NULL if not found
*/
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *Timer_Reference_List_Member_Element(
uint32_t object_instance, unsigned list_index)
{
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember = NULL;
struct object_data *pObject;
unsigned i, count = 0;
pObject = Object_Data(object_instance);
if (pObject && (list_index > 0)) {
for (i = 0; i < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; i++) {
pMember = &pObject->Manipulated_Properties[i];
if (!Timer_Reference_List_Member_Empty(pMember)) {
count++;
}
if (count == list_index) {
return pMember;
}
}
}
return NULL;
}
/**
* @brief Encode a BACnetList property element
* @param object_instance [in] BACnet object instance number
* @param list_index [in] list index requested:
* 0 to N for individual list members
* @param apdu [out] Buffer in which the APDU contents are built, or NULL to
* return the length of buffer if it had been built
* @return The length of the apdu encoded or 0 if invalid member
*/
static int Timer_List_Of_Object_Property_References_Encode(
uint32_t object_instance, uint32_t list_index, uint8_t *apdu)
{
int apdu_len = 0;
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *value;
value =
Timer_Reference_List_Member_Element(object_instance, list_index + 1);
if (value) {
apdu_len = bacapp_encode_device_obj_property_ref(apdu, value);
}
return apdu_len;
}
/**
* For a given object instance-number, set the member element values
* @param pObject - object in which to set the value
* @param index - 0-based array index
* @param pMember - pointer to member value, or NULL to set as 'empty'
* @return true if set, false if not set
*/
static bool List_Of_Object_Property_References_Set(
struct object_data *pObject,
unsigned index,
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember)
{
bool status = false;
if (pObject && (index < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX)) {
if (pMember) {
memcpy(
&pObject->Manipulated_Properties[index], pMember,
sizeof(BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE));
} else {
pObject->Manipulated_Properties[index].objectIdentifier.instance =
BACNET_MAX_INSTANCE;
pObject->Manipulated_Properties[index].deviceIdentifier.instance =
BACNET_MAX_INSTANCE;
pObject->Manipulated_Properties[index].objectIdentifier.type =
OBJECT_LIGHTING_OUTPUT;
pObject->Manipulated_Properties[index].objectIdentifier.instance =
BACNET_MAX_INSTANCE;
pObject->Manipulated_Properties[index].propertyIdentifier =
PROP_PRESENT_VALUE;
pObject->Manipulated_Properties[index].arrayIndex =
BACNET_ARRAY_ALL;
pObject->Manipulated_Properties[index].deviceIdentifier.type =
OBJECT_DEVICE;
pObject->Manipulated_Properties[index].deviceIdentifier.instance =
BACNET_MAX_INSTANCE;
}
status = true;
}
return status;
}
/**
* @brief For a given object instance-number, set the member element value
* @param object_instance - object-instance number of the object
* @param index - zero-based array index reference list array
* @param pMember - member values to set, or NULL to set as 'empty'
* @return pointer to member element or NULL if not found
*/
bool Timer_Reference_List_Member_Element_Set(
uint32_t object_instance,
unsigned index,
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
status =
List_Of_Object_Property_References_Set(pObject, index, pMember);
}
return status;
}
/**
* For a given object instance-number, determines the member count
* @param object_instance - object-instance number of the object
* @return member count
*/
unsigned Timer_Reference_List_Member_Capacity(uint32_t object_instance)
{
(void)object_instance;
return BACNET_TIMER_MANIPULATED_PROPERTIES_MAX;
}
/**
* @brief For a given object instance-number, adds a unique member element
* to the list
* @param object_instance - object-instance number of the object
* @param pMemberSrc - pointer to a object property reference element
* @return true if the element was added, false if the element was not added
*/
bool Timer_Reference_List_Member_Element_Add(
uint32_t object_instance,
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pNewMember)
{
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember = NULL;
unsigned m = 0;
struct object_data *pObject;
if (Timer_Reference_List_Member_Empty(pNewMember)) {
/* The element value is out of range for the property. */
return false;
}
pObject = Object_Data(object_instance);
if (pObject) {
/* is the element already in the list? */
for (m = 0; m < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; m++) {
pMember = &pObject->Manipulated_Properties[m];
if (!Timer_Reference_List_Member_Empty(pMember)) {
if (bacnet_device_object_property_reference_same(
pNewMember, pMember)) {
return true;
}
}
}
for (m = 0; m < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; m++) {
pMember = &pObject->Manipulated_Properties[m];
if (Timer_Reference_List_Member_Empty(pMember)) {
/* first empty slot */
memcpy(
pMember, pNewMember,
sizeof(BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE));
return true;
}
}
}
return false;
}
/**
* @brief For a given object instance-number, removes a list element
* @param object_instance - object-instance number of the object
* @param pMemberSrc - pointer to a object property reference element,
* or NULL to remove ALL
* @return true if removed, false if not removed
*/
bool Timer_Reference_List_Member_Element_Remove(
uint32_t object_instance,
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pRemoveMember)
{
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember = NULL;
unsigned m = 0;
bool status = false;
struct object_data *pObject;
if (Timer_Reference_List_Member_Empty(pRemoveMember)) {
/* The element value is out of range for the property. */
return false;
}
pObject = Object_Data(object_instance);
if (pObject) {
for (m = 0; m < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; m++) {
pMember = &pObject->Manipulated_Properties[m];
if (!Timer_Reference_List_Member_Empty(pMember)) {
if (pRemoveMember) {
if (bacnet_device_object_property_reference_same(
pRemoveMember, pMember)) {
List_Of_Object_Property_References_Set(
pObject, m, NULL);
status = true;
}
} else {
List_Of_Object_Property_References_Set(pObject, m, NULL);
status = true;
}
}
}
}
return status;
}
/**
* For a given object instance-number, determines the BACnetLIST count
* @param object_instance - object-instance number of the object
* @return BACnetLIST count
*/
unsigned Timer_Reference_List_Member_Element_Count(uint32_t object_instance)
{
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember = NULL;
unsigned count = 0, i;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
for (i = 0; i < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; i++) {
pMember = &pObject->Manipulated_Properties[i];
if (!Timer_Reference_List_Member_Empty(pMember)) {
count++;
}
}
}
return count;
}
/**
* For a given object instance-number, sets the present-value at a given
* priority 1..16.
* @param object_instance - object-instance number of the object
* @param pObject - object instance data
* @param value - application value
* @param priority - BACnet priority 0=none,1..16
*
* @return true if values are within range and present-value is sent.
*/
static bool Timer_Write_Members(
uint32_t object_instance,
struct object_data *pObject,
const BACNET_TIMER_STATE_CHANGE_VALUE *value,
uint8_t priority)
{
BACNET_WRITE_PROPERTY_DATA wp_data = { 0 };
bool status = false;
unsigned i = 0;
const BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE *pMember = NULL;
if (pObject && value) {
for (i = 0; i < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; i++) {
pMember = &pObject->Manipulated_Properties[i];
if (Timer_Reference_List_Member_Empty(pMember)) {
continue;
}
if ((pMember->deviceIdentifier.type == OBJECT_DEVICE) &&
(pMember->deviceIdentifier.instance != BACNET_MAX_INSTANCE) &&
(pMember->objectIdentifier.instance != BACNET_MAX_INSTANCE)) {
wp_data.object_type = pMember->objectIdentifier.type;
wp_data.object_instance = pMember->objectIdentifier.instance;
wp_data.object_property = pMember->propertyIdentifier;
wp_data.array_index = pMember->arrayIndex;
wp_data.error_class = ERROR_CLASS_PROPERTY;
wp_data.error_code = ERROR_CODE_SUCCESS;
wp_data.priority = priority;
wp_data.application_data_len = bacnet_timer_value_encode(
wp_data.application_data, sizeof(wp_data.application_data),
value);
if (Write_Property_Internal_Callback) {
status = write_property_bacnet_array_valid(&wp_data);
if (status) {
status = Write_Property_Internal_Callback(&wp_data);
if (status) {
wp_data.error_code = ERROR_CODE_SUCCESS;
}
}
}
Timer_Write_Property_Notify(object_instance, status, &wp_data);
}
}
}
return status;
}
/**
* @brief initiate the write requests for the current transition
* @param object_instance - object-instance number of the object
* @param pObject - object instance data
* @return true if the write occurred
*/
static bool Timer_Write_Request_Initiate(
uint32_t object_instance, struct object_data *pObject)
{
bool status = false;
unsigned index = 0;
BACNET_TIMER_STATE_CHANGE_VALUE *value = NULL;
if (pObject) {
if (pObject->Last_State_Change != TIMER_TRANSITION_NONE) {
index = pObject->Last_State_Change;
if (index < TIMER_TRANSITION_MAX) {
index--;
value = &pObject->State_Change_Values[index];
}
}
if (value) {
status = Timer_Write_Members(
object_instance, pObject, value, pObject->Priority_For_Writing);
}
}
return status;
}
/**
* For a given object instance-number, determines the program-state
*
* @param object_instance - object-instance number of the object
*
* @return program-state of the object
*/
BACNET_TIMER_STATE Timer_State(uint32_t object_instance)
{
BACNET_TIMER_STATE value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Timer_State;
}
return value;
}
/**
* @brief For a given object instance-number, sets the timer-state
* @details This property, of type BACnetTimerState, indicates the
* current state of the timer this object represents.
* To clear the timer, i.e. to request the timer to enter the IDLE state,
* a value of IDLE is written to this property.
*
* Writing this value to this property while in the RUNNING or EXPIRED
* state will force the timer to enter the IDLE state.
* If already in the IDLE state, no state transition occurs
* if this value is written.
*
* @param object_instance - object-instance number of the object
* @param value - integer value
*
* @return return false if a value other than IDLE is written to this property
*/
bool Timer_State_Set(uint32_t object_instance, BACNET_TIMER_STATE value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (value == TIMER_STATE_IDLE) {
/* Clear Request */
/* If a value of IDLE is written to the Timer_State property */
if (pObject->Timer_State == TIMER_STATE_RUNNING) {
/* set Timer_State to IDLE;
set Last_State_Change to RUNNING_TO_IDLE;
set Present_Value to zero;
set Update_Time to the current date and time;
initiate the write requests for the RUNNING_TO_IDLE
transition if present;
and enter the IDLE state. */
pObject->Timer_State = TIMER_STATE_IDLE;
pObject->Present_Value = 0;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
pObject->Last_State_Change = TIMER_TRANSITION_RUNNING_TO_IDLE;
Timer_Write_Request_Initiate(object_instance, pObject);
} else if (pObject->Timer_State == TIMER_STATE_EXPIRED) {
pObject->Last_State_Change = TIMER_TRANSITION_EXPIRED_TO_IDLE;
/* then set Timer_State to IDLE;
set Last_State_Change to EXPIRED_TO_IDLE;
set Update_Time to current date and time;
initiate the write requests for the EXPIRED_TO_IDLE
transition if present; and enter the IDLE state. */
pObject->Timer_State = TIMER_STATE_IDLE;
pObject->Present_Value = 0;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
pObject->Last_State_Change = TIMER_TRANSITION_EXPIRED_TO_IDLE;
Timer_Write_Request_Initiate(object_instance, pObject);
} else if (pObject->Timer_State == TIMER_STATE_IDLE) {
/* then no properties shall be changed;
no write requests shall be initiated;
and no state transition shall occur.*/
}
/* Writing a value other than IDLE to this property
shall cause a Result(-) to be returned */
status = true;
}
}
return status;
}
/**
* @brief For a given object instance-number, gets the timer
* running status.
* @details
* 12.57.11 Timer_Running
* This property, of type Boolean, shall have a value of TRUE if
* the current state of the timer is RUNNING, otherwise FALSE.
* This property may be used by other objects that require a
* simple Boolean flag for determining if the timer is in RUNNING state.
* @param object_instance - object-instance number of the object
* @return TRUE if the current state of the timer is RUNNING, otherwise FALSE.
*/
bool Timer_Running(uint32_t object_instance)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (pObject->Timer_State == TIMER_STATE_RUNNING) {
status = true;
}
}
return status;
}
/**
* @brief For a given object instance-number, sets the timer
* running status
* @details Writing a value of TRUE to this property, in any timer state,
* shall be considered a start request. Present_Value shall be set to the
* value specified in the Default_Timeout property.
* Writing a value of FALSE to this property while the timer is in the
* RUNNING state shall be considered an expire request and shall force
* the timer to transition to state EXPIRED. When writing a value of FALSE
* to this property while the timer is in the EXPIRED or IDLE state,
* no transition of the timer state shall occur.
* @param object_instance - object-instance number of the object
* @param start - true if start is request, false if stop is requested
* @return true if the running status was set
*/
bool Timer_Running_Set(uint32_t object_instance, bool start)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (start) {
if (pObject->Timer_State == TIMER_STATE_IDLE) {
/* If a value of TRUE is written to the Timer_Running property,
then set Initial_Timeout to the value of Default_Timeout;
set Timer_State to RUNNING;
set Last_State_Change to IDLE_TO_RUNNING;
set Present_Value to the value of Initial_Timeout;
set Update_Time to the current date and time;
initiate the write requests for the IDLE_TO_RUNNING
transition if present; and enter the RUNNING state. */
pObject->Timer_State = TIMER_STATE_RUNNING;
pObject->Last_State_Change = TIMER_TRANSITION_IDLE_TO_RUNNING;
pObject->Initial_Timeout = pObject->Default_Timeout;
pObject->Present_Value = pObject->Initial_Timeout;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
} else if (pObject->Timer_State == TIMER_STATE_RUNNING) {
/* If a value of TRUE is written to the Timer_Running property,
then set Last_State_Change to RUNNING_TO_RUNNING;
set Initial_Timeout to the value of Default_Timeout;
set Present_Value to the value of Initial_Timeout;
set Update_Time to the current date and time;
initiate the write requests for the RUNNING_TO_RUNNING
transition if present; and enter the RUNNING state.*/
pObject->Timer_State = TIMER_STATE_RUNNING;
pObject->Last_State_Change =
TIMER_TRANSITION_RUNNING_TO_RUNNING;
pObject->Initial_Timeout = pObject->Default_Timeout;
pObject->Present_Value = pObject->Initial_Timeout;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
} else if (pObject->Timer_State == TIMER_STATE_EXPIRED) {
/* If a value of TRUE is written to the Timer_Running property,
set Timer_State to RUNNING;
set Last_State_Change to EXPIRED_TO_RUNNING;
set Initial_Timeout to the value of Default_Timeout;
set Present_Value to the value of Initial_Timeout;
set Update_Time to the current date and time;
initiate the write requests for the EXPIRED_TO_RUNNING
transition if present; and enter the RUNNING state. */
pObject->Timer_State = TIMER_STATE_RUNNING;
pObject->Last_State_Change =
TIMER_TRANSITION_EXPIRED_TO_RUNNING;
pObject->Initial_Timeout = pObject->Default_Timeout;
pObject->Present_Value = pObject->Initial_Timeout;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
}
} else {
if (pObject->Timer_State == TIMER_STATE_RUNNING) {
/* Expire Request
If a value of FALSE is written to the Timer_Running
property,
set Timer_State to EXPIRED;
set Last_State_Change to FORCED_TO_EXPIRED;
set Present_Value to zero;
set Update_Time to the current date and time;
initiate the write requests for the FORCED_TO_EXPIRED
transition if present; and enter the EXPIRED state.*/
pObject->Timer_State = TIMER_STATE_EXPIRED;
pObject->Last_State_Change = TIMER_TRANSITION_FORCED_TO_EXPIRED;
pObject->Present_Value = 0;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
}
}
status = true;
}
return status;
}
/**
* For a given object instance-number, loads the object-name into
* a characterstring. Note that the object name must be unique
* within this device.
*
* @param object_instance - object-instance number of the object
* @param object_name - holds the object-name retrieved
*
* @return true if object-name was retrieved
*/
bool Timer_Object_Name(
uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
{
char text[32] = "";
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (pObject->Object_Name) {
status =
characterstring_init_ansi(object_name, pObject->Object_Name);
} else {
snprintf(
text, sizeof(text), "TIMER-%lu",
(unsigned long)object_instance);
status = characterstring_init_ansi(object_name, text);
}
}
return status;
}
/**
* @brief For a given object instance-number, sets the object-name
* @param object_instance - object-instance number of the object
* @param new_name - holds the object-name to be set
* @return true if object-name was set
*/
bool Timer_Name_Set(uint32_t object_instance, const char *new_name)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
status = true;
pObject->Object_Name = new_name;
}
return status;
}
/**
* @brief Return the object name C string
* @param object_instance [in] BACnet object instance number
* @return object name or NULL if not found
*/
const char *Timer_Name_ASCII(uint32_t object_instance)
{
const char *name = NULL;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
name = pObject->Object_Name;
}
return name;
}
/**
* For a given object instance-number, return the description.
* @param object_instance - object-instance number of the object
* @param description - description pointer
* @return true/false
*/
bool Timer_Description(
uint32_t object_instance, BACNET_CHARACTER_STRING *description)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (pObject->Description) {
status =
characterstring_init_ansi(description, pObject->Description);
} else {
status = characterstring_init_ansi(description, "");
}
}
return status;
}
/**
* @brief For a given object instance-number, sets the description
* @param object_instance - object-instance number of the object
* @param new_name - holds the description to be set
* @return true if string was set
*/
bool Timer_Description_Set(uint32_t object_instance, const char *new_name)
{
bool status = false; /* return value */
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
status = true;
pObject->Description = new_name;
}
return status;
}
/**
* @brief For a given object instance-number, returns the description
* @param object_instance - object-instance number of the object
* @return description text or NULL if not found
*/
const char *Timer_Description_ANSI(uint32_t object_instance)
{
const char *name = NULL;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
if (pObject->Description == NULL) {
name = "";
} else {
name = pObject->Description;
}
}
return name;
}
/**
* For a given object instance-number, returns the program change value
*
* @param object_instance - object-instance number of the object
*
* @return program change property value
*/
BACNET_TIMER_TRANSITION Timer_Last_State_Change(uint32_t object_instance)
{
BACNET_TIMER_TRANSITION change = TIMER_TRANSITION_NONE;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
change = pObject->Last_State_Change;
}
return change;
}
/**
* For a given object instance-number, returns the out-of-service
* property value
*
* @param object_instance - object-instance number of the object
*
* @return out-of-service property value
*/
bool Timer_Out_Of_Service(uint32_t object_instance)
{
struct object_data *pObject;
bool value = false;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Out_Of_Service;
}
return value;
}
/**
* For a given object instance-number, sets the out-of-service property value
*
* @param object_instance - object-instance number of the object
* @param value - boolean out-of-service value
*
* @return true if the out-of-service property value was set
*/
void Timer_Out_Of_Service_Set(uint32_t object_instance, bool value)
{
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Out_Of_Service = value;
}
}
/**
* @brief For a given object instance-number, gets the reliability.
* @param object_instance - object-instance number of the object
* @return reliability value
*/
BACNET_RELIABILITY Timer_Reliability(uint32_t object_instance)
{
BACNET_RELIABILITY reliability = RELIABILITY_NO_FAULT_DETECTED;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
reliability = pObject->Reliability;
}
return reliability;
}
/**
* @brief For a given object instance-number, gets the Fault status flag
* @param object_instance - object-instance number of the object
* @return true the status flag is in Fault
*/
static bool Timer_Fault(uint32_t object_instance)
{
struct object_data *pObject;
bool fault = false;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (pObject->Reliability != RELIABILITY_NO_FAULT_DETECTED) {
fault = true;
}
}
return fault;
}
/**
* @brief For a given object instance-number, sets the reliability
* @param object_instance - object-instance number of the object
* @param value - reliability enumerated value
* @return true if values are within range and property is set.
*/
bool Timer_Reliability_Set(uint32_t object_instance, BACNET_RELIABILITY value)
{
struct object_data *pObject;
bool status = false;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (value <= 255) {
pObject->Reliability = value;
status = true;
}
}
return status;
}
/**
* @brief Return the present-value for a specific object instance
* @param object_instance [in] BACnet object instance number
* @return the present-value for a specific object instance
*/
uint32_t Timer_Present_Value(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
value = pObject->Present_Value;
}
return value;
}
/**
* @brief Set the present-value for a specific object instance
* @details Writing a value to this property that is within the supported
* range, defined by Min_Pres_Value and Max_Pres_Value, shall force
* the timer to transition to the RUNNING state.
* The value written shall be used as the initial timeout
* and set into the Initial_Timeout property.
*
* Writing a value of zero to this property while the timer
* is in the RUNNING state shall be considered an expire request
* and force the timer state to transition to state EXPIRED.
* If a value of zero is written to the property while the timer
* is in the EXPIRED or IDLE state, then no transition of the
* timer state shall occur.
*
* @param object_instance [in] BACnet object instance number
* @return true if the present-value for a specific object instance was set
*/
bool Timer_Present_Value_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (value == 0) {
/* If a value of zero is written to the Present_Value property */
if ((pObject->Timer_State == TIMER_STATE_IDLE) ||
(pObject->Timer_State == TIMER_STATE_EXPIRED)) {
/* then no properties shall be changed;
no write requests shall be initiated;
and no state transition shall occur. */
} else if (pObject->Timer_State == TIMER_STATE_RUNNING) {
/* set Timer_State to EXPIRED;
set Last_State_Change to FORCED_TO_EXPIRED;
set Present_Value to zero;
set Update_Time to the current date and time;
initiate the write requests for
the FORCED_TO_EXPIRED transition if present;
and enter the EXPIRED state.*/
pObject->Timer_State = TIMER_STATE_EXPIRED;
pObject->Last_State_Change = TIMER_TRANSITION_FORCED_TO_EXPIRED;
pObject->Present_Value = 0;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
}
status = true;
} else {
if ((value >= pObject->Min_Pres_Value) &&
(value <= pObject->Max_Pres_Value)) {
/* Start Request with Specific Timeout */
/* If a value within the supported range is written
to the Present_Value property.
set Initial_Timeout to the value written to Present_Value;*/
pObject->Present_Value = value;
pObject->Initial_Timeout = value;
if (pObject->Timer_State == TIMER_STATE_IDLE) {
/* set Last_State_Change to IDLE_TO_RUNNING; */
pObject->Last_State_Change =
TIMER_TRANSITION_IDLE_TO_RUNNING;
} else if (pObject->Timer_State == TIMER_STATE_RUNNING) {
/* set Last_State_Change to RUNNING_TO_RUNNING; */
pObject->Last_State_Change =
TIMER_TRANSITION_RUNNING_TO_RUNNING;
} else if (pObject->Timer_State == TIMER_STATE_EXPIRED) {
/* set Last_State_Change to EXPIRED_TO_RUNNING; */
pObject->Last_State_Change =
TIMER_TRANSITION_EXPIRED_TO_RUNNING;
}
/* set Timer_State to RUNNING;
set Update_Time to the current date and time;
initiate the write requests for the transition if present;
and enter the RUNNING state */
pObject->Timer_State = TIMER_STATE_RUNNING;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
status = true;
} else {
status = false;
}
}
}
return status;
}
/**
* @brief Get the update-time property value for the object-instance specified
* @param object_instance [in] BACnet object instance number
* @return true if property value was retrieved
*/
bool Timer_Update_Time(uint32_t object_instance, BACNET_DATE_TIME *bdatetime)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
datetime_copy(bdatetime, &pObject->Update_Time);
status = true;
}
return status;
}
/**
* @brief Get the update-time property value for the object-instance specified
* @param object_instance [in] BACnet object instance number
* @return true if property value was retrieved
*/
bool Timer_Update_Time_Set(
uint32_t object_instance, BACNET_DATE_TIME *bdatetime)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
datetime_copy(&pObject->Update_Time, bdatetime);
status = true;
}
return status;
}
/**
* @brief Get the expiration-time property value for the object-instance
* specified
* @details The Expiration_Time property shall indicate the date and time
* when the timer will expire. The value of Expiration_Time
* shall be calculated at the time the property is read.
* @param object_instance [in] BACnet object instance number
* @param bdatetime [out] the property value retrieved
* @return true if property value was retrieved
*/
bool Timer_Expiration_Time(
uint32_t object_instance, BACNET_DATE_TIME *bdatetime)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (pObject->Timer_State == TIMER_STATE_RUNNING) {
datetime_copy(bdatetime, &pObject->Update_Time);
datetime_add_milliseconds(bdatetime, pObject->Present_Value);
} else {
/* set Expiration_Time to the unspecified datetime value */
datetime_wildcard_set(bdatetime);
}
status = true;
}
return status;
}
/**
* @brief Gets the initial-timeout property value for a given object instance
* @param object_instance - object-instance number of the object
* @return initial-timeout property value
*/
uint32_t Timer_Initial_Timeout(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Initial_Timeout;
}
return value;
}
/**
* @brief Sets the initial-timeout property value for a given object instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the initial-timeout property value was set
*/
bool Timer_Initial_Timeout_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Initial_Timeout = value;
status = true;
}
return status;
}
/**
* @brief Gets the default-timeout property value for a given object instance
* @param object_instance - object-instance number of the object
* @return default-timeout property value
*/
uint32_t Timer_Default_Timeout(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Default_Timeout;
}
return value;
}
/**
* @brief Sets the default-timeout property value for a given object instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the default-timeout property value was set
*/
bool Timer_Default_Timeout_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Default_Timeout = value;
status = true;
}
return status;
}
/**
* @brief Gets the min-pres-value property value for a given object instance
* @param object_instance - object-instance number of the object
* @return min-pres-value property value
*/
uint32_t Timer_Min_Pres_Value(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Min_Pres_Value;
}
return value;
}
/**
* @brief Sets the min-pres-value property value for a given object instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the min-pres-value property value was set
*/
bool Timer_Min_Pres_Value_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Min_Pres_Value = value;
status = true;
}
return status;
}
/**
* @brief Gets the max-pres-value property value for a given object instance
* @param object_instance - object-instance number of the object
* @return max-pres-value property value
*/
uint32_t Timer_Max_Pres_Value(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Max_Pres_Value;
}
return value;
}
/**
* @brief Sets the max-pres-value property value for a given object instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the max-pres-value property value was set
*/
bool Timer_Max_Pres_Value_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Max_Pres_Value = value;
status = true;
}
return status;
}
/**
* @brief Gets the resolution property value for a given object instance
* @param object_instance - object-instance number of the object
* @return resolution property value
*/
uint32_t Timer_Resolution(uint32_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Resolution;
}
return value;
}
/**
* @brief Sets the resolution property value for a given object instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the resolution property value was set
*/
bool Timer_Resolution_Set(uint32_t object_instance, uint32_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Resolution = value;
status = true;
}
return status;
}
/**
* @brief Gets the priority-for-writing property value for a given object
* instance
* @param object_instance - object-instance number of the object
* @return priority-for-writing property value
*/
uint8_t Timer_Priority_For_Writing(uint8_t object_instance)
{
uint32_t value = 0;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
value = pObject->Priority_For_Writing;
}
return value;
}
/**
* @brief Sets the priority-for-writing property value for a given object
* instance
* @param object_instance - object-instance number of the object
* @param value - property value to set
* @return true if the priority-for-writing property value was in range and set
*/
bool Timer_Priority_For_Writing_Set(uint32_t object_instance, uint8_t value)
{
bool status = false;
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
/* Unsigned(1..16) */
if ((value >= BACNET_MIN_PRIORITY) && (value <= BACNET_MAX_PRIORITY)) {
pObject->Priority_For_Writing = value;
status = true;
}
}
return status;
}
/**
* @brief Encode a BACnetARRAY property element
* @details This property, of type BACnetARRAY[7]
* of BACnetTimerStateChangeValue, represents the values that
* are to be written to the referenced properties when a change
* of the timer state occurs.
* Each of the elements 1-7 of this array may contain a value
* to be written for the respective change of timer state.
* The array index of the element is equal to the numerical value of the
* BACnetTimerTransition enumeration for the respective timer state change.
* The timer state change NONE has no corresponding array element.
* @param object_instance [in] BACnet object instance number
* @param index [in] array index requested:
* 0 to N for individual array members
* @param apdu [out] Buffer in which the APDU contents are built, or NULL to
* return the length of buffer if it had been built
* @return The length of the apdu encoded or
* BACNET_STATUS_ERROR for ERROR_CODE_INVALID_ARRAY_INDEX
*/
static int Timer_State_Change_Value_Encode(
uint32_t object_instance, BACNET_ARRAY_INDEX index, uint8_t *apdu)
{
int apdu_len = BACNET_STATUS_ERROR;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
/* Note: The timer state change NONE=0
has no corresponding array element.*/
if (index < (TIMER_TRANSITION_MAX - 1)) {
apdu_len = bacnet_timer_value_type_encode(
apdu, &pObject->State_Change_Values[index]);
}
}
return apdu_len;
}
/**
* @brief Get the state-change value array element value
* @param object_instance - BACnet object instance number
* @param transition - the state-change enumeration requested
* @return state-change structure or NULL if transition is out of range.
*/
BACNET_TIMER_STATE_CHANGE_VALUE *Timer_State_Change_Value(
uint32_t object_instance, BACNET_TIMER_TRANSITION transition)
{
BACNET_TIMER_STATE_CHANGE_VALUE *value = NULL;
unsigned index;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
/* Note: The timer state change NONE=0
has no corresponding array element.*/
if ((transition != TIMER_TRANSITION_NONE) &&
(transition < TIMER_TRANSITION_MAX)) {
index = transition - 1;
value = &pObject->State_Change_Values[index];
}
}
return value;
}
/**
* @brief Get the state-change value array element value
* @param object_instance - BACnet object instance number
* @param transition - the state-change enumeration requested
* @param value - [out] state-change structure where value will be copied
* @return true if the transition is in range and value was copied
*/
bool Timer_State_Change_Value_Get(
uint32_t object_instance,
BACNET_TIMER_TRANSITION transition,
BACNET_TIMER_STATE_CHANGE_VALUE *value)
{
bool status = false;
unsigned index;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
/* Note: The timer state change NONE=0
has no corresponding array element.*/
if ((transition != TIMER_TRANSITION_NONE) &&
(transition < TIMER_TRANSITION_MAX)) {
index = transition - 1;
status = bacnet_timer_value_copy(
value, &pObject->State_Change_Values[index]);
}
}
return status;
}
/**
* @brief Set the state-change value array element value
* @param object_instance - BACnet object instance number
* @param transition - the state-change enumeration requested
* @param value - state-change structure values
* @return true if the transition is in range and value was copied
*/
bool Timer_State_Change_Value_Set(
uint32_t object_instance,
BACNET_TIMER_TRANSITION transition,
BACNET_TIMER_STATE_CHANGE_VALUE *value)
{
bool status = false;
unsigned index;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
/* Note: The timer state change NONE=0
has no corresponding array element.*/
if ((transition != TIMER_TRANSITION_NONE) &&
(transition < TIMER_TRANSITION_MAX)) {
index = transition - 1;
status = bacnet_timer_value_copy(
&pObject->State_Change_Values[index], value);
}
}
return status;
}
/**
* ReadProperty handler for this object. For the given ReadProperty
* data, the application_data is loaded or the error flags are set.
*
* @param rpdata - BACNET_READ_PROPERTY_DATA data, including
* requested data and space for the reply, or error response.
*
* @return number of APDU bytes in the response, zero if no data, or
* BACNET_STATUS_ERROR on error.
*/
int Timer_Read_Property(BACNET_READ_PROPERTY_DATA *rpdata)
{
int apdu_len = 0; /* return value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
BACNET_DATE_TIME bdatetime;
BACNET_UNSIGNED_INTEGER unsigned_value;
size_t i;
unsigned imax;
uint8_t *apdu = NULL;
int apdu_size;
uint32_t enum_value = 0;
bool state = false;
if ((rpdata == NULL) || (rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
apdu_size = rpdata->application_data_len;
switch (rpdata->object_property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len = encode_application_object_id(
&apdu[0], Object_Type, rpdata->object_instance);
break;
case PROP_OBJECT_NAME:
Timer_Object_Name(rpdata->object_instance, &char_string);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_OBJECT_TYPE:
apdu_len = encode_application_enumerated(&apdu[0], Object_Type);
break;
case PROP_STATUS_FLAGS:
bitstring_init(&bit_string);
bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false);
state = Timer_Fault(rpdata->object_instance);
bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, state);
bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false);
state = Timer_Out_Of_Service(rpdata->object_instance);
bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE, state);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_TIMER_STATE:
enum_value = Timer_State(rpdata->object_instance);
apdu_len = encode_application_enumerated(&apdu[0], enum_value);
break;
case PROP_PRESENT_VALUE:
unsigned_value = Timer_Present_Value(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_TIMER_RUNNING:
state = Timer_Running(rpdata->object_instance);
apdu_len = encode_application_boolean(&apdu[0], state);
break;
case PROP_DESCRIPTION:
if (Timer_Description(rpdata->object_instance, &char_string)) {
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
}
break;
case PROP_RELIABILITY:
enum_value = Timer_Reliability(rpdata->object_instance);
apdu_len = encode_application_enumerated(&apdu[0], enum_value);
break;
case PROP_OUT_OF_SERVICE:
state = Timer_Out_Of_Service(rpdata->object_instance);
apdu_len = encode_application_boolean(&apdu[0], state);
break;
case PROP_UPDATE_TIME:
Timer_Update_Time(rpdata->object_instance, &bdatetime);
apdu_len = bacapp_encode_datetime(&apdu[0], &bdatetime);
break;
case PROP_LAST_STATE_CHANGE:
enum_value = Timer_Last_State_Change(rpdata->object_instance);
apdu_len = encode_application_enumerated(&apdu[0], enum_value);
break;
case PROP_EXPIRATION_TIME:
Timer_Expiration_Time(rpdata->object_instance, &bdatetime);
apdu_len = bacapp_encode_datetime(&apdu[0], &bdatetime);
break;
case PROP_INITIAL_TIMEOUT:
unsigned_value = Timer_Initial_Timeout(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_DEFAULT_TIMEOUT:
unsigned_value = Timer_Default_Timeout(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_MIN_PRES_VALUE:
unsigned_value = Timer_Min_Pres_Value(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_MAX_PRES_VALUE:
unsigned_value = Timer_Max_Pres_Value(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_RESOLUTION:
unsigned_value = Timer_Resolution(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
case PROP_STATE_CHANGE_VALUES:
/* note: The timer state change NONE=0 has no
corresponding array element.*/
apdu_len = bacnet_array_encode(
rpdata->object_instance, rpdata->array_index,
Timer_State_Change_Value_Encode, TIMER_TRANSITION_MAX - 1, apdu,
apdu_size);
if (apdu_len == BACNET_STATUS_ABORT) {
rpdata->error_code =
ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
} else if (apdu_len == BACNET_STATUS_ERROR) {
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
}
break;
case PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES:
imax = Timer_Reference_List_Member_Element_Count(
rpdata->object_instance);
for (i = 0; i < imax; i++) {
apdu_len += Timer_List_Of_Object_Property_References_Encode(
rpdata->object_instance, i, &apdu[apdu_len]);
}
break;
case PROP_PRIORITY_FOR_WRITING:
unsigned_value =
Timer_Priority_For_Writing(rpdata->object_instance);
apdu_len = encode_application_unsigned(&apdu[0], unsigned_value);
break;
default:
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = BACNET_STATUS_ERROR;
break;
}
return apdu_len;
}
/**
* @brief Decode a BACnetARRAY property element to determine the element length
* @param object_instance [in] BACnet object instance number
* @param apdu [in] Buffer in which the APDU contents are extracted
* @param apdu_size [in] The size of the APDU buffer
* @return The length of the decoded apdu, or BACNET_STATUS_ERROR on error
*/
static int Timer_State_Change_Value_Length(
uint32_t object_instance, uint8_t *apdu, size_t apdu_size)
{
BACNET_TIMER_STATE_CHANGE_VALUE value = { 0 };
int len = 0;
(void)object_instance;
len = bacnet_timer_value_decode(apdu, apdu_size, &value);
return len;
}
/**
* @brief Write a value to a BACnetARRAY property element value
* using a BACnetARRAY write utility function
* @param object_instance [in] BACnet object instance number
* @param array_index [in] array index to write:
* 0=array size, 1 to N for individual array members
* @param application_data [in] encoded element value
* @param application_data_len [in] The size of the encoded element value
* @return BACNET_ERROR_CODE value
*/
static BACNET_ERROR_CODE Timer_State_Change_Value_Write(
uint32_t object_instance,
BACNET_ARRAY_INDEX array_index,
uint8_t *application_data,
size_t application_data_len)
{
BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT;
BACNET_TIMER_STATE_CHANGE_VALUE new_value = { 0 }, *current_value = NULL;
int len = 0;
bool status;
if (array_index == 0) {
/* fixed size array */
error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
} else if (array_index < TIMER_TRANSITION_MAX) {
len = bacnet_timer_value_decode(
application_data, application_data_len, &new_value);
if (len > 0) {
current_value =
Timer_State_Change_Value(object_instance, array_index);
status = bacnet_timer_value_copy(current_value, &new_value);
if (status) {
error_code = ERROR_CODE_SUCCESS;
} else {
error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
} else {
error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
}
return error_code;
}
/**
* @brief Decode a BACnetLIST property element to determine the element length
* @param object_instance [in] BACnet object instance number
* @param apdu [in] Buffer in which the APDU contents are extracted
* @param apdu_size [in] The size of the APDU buffer
* @return The length of the decoded apdu, or BACNET_STATUS_ERROR on error
*/
static int Timer_List_Of_Object_Property_References_Length(
uint32_t object_instance, uint8_t *apdu, size_t apdu_size)
{
BACNET_APPLICATION_DATA_VALUE value = { 0 };
int len = 0;
(void)object_instance;
len = bacapp_decode_known_property(
apdu, apdu_size, &value, OBJECT_TIMER,
PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES);
return len;
}
/**
* @brief Add an element to a BACnetLIST property
* using a BACnetLIST add utility function
* @param object_instance [in] BACnet object instance number
* @param application_data [in] encoded element value
* @param application_data_len [in] The size of the encoded element value
* @return BACNET_ERROR_CODE value or ERROR_CODE_SUCCESS
*/
static BACNET_ERROR_CODE Timer_List_Of_Object_Property_References_Add(
uint32_t object_instance,
uint8_t *application_data,
size_t application_data_len)
{
BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT;
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE new_value = { 0 };
int len = 0;
bool status = false;
if ((!application_data) && (application_data_len == 0)) {
/* empty the BACnetLIST - remove all before adding */
(void)Timer_Reference_List_Member_Element_Remove(object_instance, NULL);
error_code = ERROR_CODE_SUCCESS;
} else {
len = bacnet_device_object_property_reference_decode(
application_data, application_data_len, &new_value);
if (len > 0) {
if (Timer_Reference_List_Member_Empty(&new_value)) {
/* The element value is out of range for the property. */
error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
} else {
status = Timer_Reference_List_Member_Element_Add(
object_instance, &new_value);
if (status) {
error_code = ERROR_CODE_SUCCESS;
} else {
error_code = ERROR_CODE_NO_SPACE_TO_WRITE_PROPERTY;
}
}
} else {
error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
}
return error_code;
}
/**
* @brief Remove an element from a BACnetLIST property
* @param object_instance [in] BACnet object instance number
* @param application_data [in] encoded element value
* @param application_data_len [in] The size of the encoded element value
* @return BACNET_ERROR_CODE value or ERROR_CODE_SUCCESS
*/
static BACNET_ERROR_CODE Timer_List_Of_Object_Property_References_Remove(
uint32_t object_instance,
uint8_t *application_data,
size_t application_data_len)
{
BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT;
BACNET_DEVICE_OBJECT_PROPERTY_REFERENCE new_value = { 0 };
int len = 0;
bool status = false;
if ((!application_data) && (application_data_len == 0)) {
/* nothing to remove */
error_code = ERROR_CODE_SUCCESS;
} else {
len = bacnet_device_object_property_reference_decode(
application_data, application_data_len, &new_value);
if (len > 0) {
if (Timer_Reference_List_Member_Empty(&new_value)) {
error_code = ERROR_CODE_LIST_ELEMENT_NOT_FOUND;
} else {
status = Timer_Reference_List_Member_Element_Remove(
object_instance, &new_value);
if (status) {
error_code = ERROR_CODE_SUCCESS;
} else {
error_code = ERROR_CODE_LIST_ELEMENT_NOT_FOUND;
}
}
} else {
error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
}
return error_code;
}
/**
* WriteProperty handler for this object. For the given WriteProperty
* data, the application_data is loaded or the error flags are set.
*
* @param wp_data - BACNET_WRITE_PROPERTY_DATA data, including
* requested data and space for the reply, or error response.
*
* @return false if an error is loaded, true if no errors
*/
bool Timer_Write_Property(BACNET_WRITE_PROPERTY_DATA *wp_data)
{
bool status = false; /* return value */
int len = 0;
BACNET_APPLICATION_DATA_VALUE value = { 0 };
/* decode the some of the request */
len = bacapp_decode_known_array_property(
wp_data->application_data, wp_data->application_data_len, &value,
wp_data->object_type, wp_data->object_property, wp_data->array_index);
if (len < 0) {
/* error while decoding - a value larger than we can handle */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
return false;
}
switch (wp_data->object_property) {
case PROP_PRESENT_VALUE:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
status = Timer_Present_Value_Set(
wp_data->object_instance, value.type.Unsigned_Int);
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_OUT_OF_SERVICE:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_BOOLEAN);
if (status) {
Timer_Out_Of_Service_Set(
wp_data->object_instance, value.type.Boolean);
}
break;
case PROP_DEFAULT_TIMEOUT:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
if (value.type.Unsigned_Int <= UINT32_MAX) {
status = Timer_Default_Timeout_Set(
wp_data->object_instance, value.type.Unsigned_Int);
} else {
status = false;
}
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_MIN_PRES_VALUE:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
if (value.type.Unsigned_Int <= UINT32_MAX) {
status = Timer_Min_Pres_Value_Set(
wp_data->object_instance, value.type.Unsigned_Int);
} else {
status = false;
}
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_MAX_PRES_VALUE:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
if (value.type.Unsigned_Int <= UINT32_MAX) {
status = Timer_Max_Pres_Value_Set(
wp_data->object_instance, value.type.Unsigned_Int);
} else {
status = false;
}
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_RESOLUTION:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
if (value.type.Unsigned_Int <= UINT32_MAX) {
status = Timer_Resolution_Set(
wp_data->object_instance, value.type.Unsigned_Int);
} else {
status = false;
}
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_PRIORITY_FOR_WRITING:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_UNSIGNED_INT);
if (status) {
if (value.type.Unsigned_Int <= UINT8_MAX) {
status = Timer_Priority_For_Writing_Set(
wp_data->object_instance, value.type.Unsigned_Int);
} else {
status = false;
}
if (!status) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
break;
case PROP_STATE_CHANGE_VALUES:
wp_data->error_code = bacnet_array_write(
wp_data->object_instance, wp_data->array_index,
Timer_State_Change_Value_Length, Timer_State_Change_Value_Write,
TIMER_TRANSITION_MAX - 1, wp_data->application_data,
wp_data->application_data_len);
if (wp_data->error_code == ERROR_CODE_SUCCESS) {
status = true;
}
break;
case PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES:
/* a BACnetLIST can only be written all-at-once */
wp_data->error_code = bacnet_list_write(
wp_data->object_instance, wp_data->array_index,
Timer_List_Of_Object_Property_References_Length,
Timer_List_Of_Object_Property_References_Add,
BACNET_TIMER_MANIPULATED_PROPERTIES_MAX,
wp_data->application_data, wp_data->application_data_len);
if (wp_data->error_code == ERROR_CODE_SUCCESS) {
status = true;
}
break;
default:
if (property_lists_member(
Properties_Required, Properties_Optional,
Properties_Proprietary, wp_data->object_property)) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
}
break;
}
return status;
}
/**
* @brief Set the context used with load, unload, run, halt, and restart
* @param object_instance [in] BACnet object instance number
* @param context [in] pointer to the context
*/
void *Timer_Context_Get(uint32_t object_instance)
{
struct object_data *pObject = Object_Data(object_instance);
if (pObject) {
return pObject->Context;
}
return NULL;
}
/**
* @brief Set the context used for vendor specific extensions
* @param object_instance [in] BACnet object instance number
* @param context [in] pointer to the context
*/
void Timer_Context_Set(uint32_t object_instance, void *context)
{
struct object_data *pObject;
pObject = Object_Data(object_instance);
if (pObject) {
pObject->Context = context;
}
}
/**
* @brief Sets a callback used when the timer is written from BACnet
* @param cb - callback used to provide indications
*/
void Timer_Write_Property_Internal_Callback_Set(write_property_function cb)
{
Write_Property_Internal_Callback = cb;
}
/**
* @brief Add a Timer write property notification callback
* @param notification - pointer to the notification structure
*/
void Timer_Write_Property_Notification_Add(
struct timer_write_property_notification *notification)
{
struct timer_write_property_notification *head;
head = &Write_Property_Notification_Head;
do {
if (head->next == notification) {
/* already here! */
break;
} else if (!head->next) {
/* first available node */
head->next = notification;
break;
}
head = head->next;
} while (head);
}
/**
* @brief Calls all registered Timer write property notification callbacks
* @param instance - object instance number
* @param status - write property status
* @param wp_data - write property data
*/
void Timer_Write_Property_Notify(
uint32_t instance, bool status, BACNET_WRITE_PROPERTY_DATA *wp_data)
{
struct timer_write_property_notification *head;
head = &Write_Property_Notification_Head;
do {
if (head->callback) {
head->callback(instance, status, wp_data);
}
head = head->next;
} while (head);
}
/**
* @brief Updates the object program operation
* @details In the RUNNING state, the timer is active
* and is counting down the remaining time.
* The Present_Value property shall indicate the
* remaining time until expiration.
*
* @param object_instance - object-instance number of the object
* @param milliseconds - number of milliseconds elapsed
*/
void Timer_Task(uint32_t object_instance, uint16_t milliseconds)
{
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
switch (pObject->Timer_State) {
case TIMER_STATE_RUNNING:
if (pObject->Present_Value > milliseconds) {
pObject->Present_Value -= milliseconds;
} else {
/* expired */
pObject->Present_Value = 0;
pObject->Timer_State = TIMER_STATE_EXPIRED;
pObject->Last_State_Change =
TIMER_TRANSITION_RUNNING_TO_EXPIRED;
datetime_local(
&pObject->Update_Time.date, &pObject->Update_Time.time,
NULL, NULL);
Timer_Write_Request_Initiate(object_instance, pObject);
}
break;
case TIMER_STATE_EXPIRED:
case TIMER_STATE_IDLE:
default:
/* do nothing */
break;
}
}
}
/**
* @brief AddListElement to a list property
* @param list_element [in] Pointer to the BACnet_List_Element_Data structure,
* which is packed with the information from the request.
* @return #BACNET_STATUS_OK or #BACNET_STATUS_ERROR or
* #BACNET_STATUS_ABORT or #BACNET_STATUS_REJECT
*/
int Timer_Add_List_Element(BACNET_LIST_ELEMENT_DATA *list_element)
{
if (!list_element) {
return BACNET_STATUS_ABORT;
}
list_element->error_class = ERROR_CLASS_PROPERTY;
if (list_element->object_property ==
PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES) {
if (list_element->array_index != BACNET_ARRAY_ALL) {
/* An array index is provided but the property is
not a BACnetARRAY of BACnetLIST.*/
list_element->error_class = ERROR_CLASS_PROPERTY;
list_element->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
} else {
list_element->error_code =
Timer_List_Of_Object_Property_References_Add(
list_element->object_instance,
list_element->application_data,
list_element->application_data_len);
if (list_element->error_code == ERROR_CODE_SUCCESS) {
return BACNET_STATUS_OK;
}
if (list_element->error_code ==
ERROR_CODE_NO_SPACE_TO_WRITE_PROPERTY) {
list_element->error_class = ERROR_CLASS_RESOURCES;
list_element->error_code =
ERROR_CODE_NO_SPACE_TO_ADD_LIST_ELEMENT;
}
}
} else {
list_element->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
}
return BACNET_STATUS_ERROR;
}
/**
* @brief RemoveListElement to a list property
* @param list_element [in] Pointer to the BACnet_List_Element_Data structure,
* which is packed with the information from the request.
* @return #BACNET_STATUS_OK or #BACNET_STATUS_ERROR or
* #BACNET_STATUS_ABORT or #BACNET_STATUS_REJECT
*/
int Timer_Remove_List_Element(BACNET_LIST_ELEMENT_DATA *list_element)
{
if (!list_element) {
return BACNET_STATUS_ABORT;
}
list_element->error_class = ERROR_CLASS_PROPERTY;
if (list_element->object_property ==
PROP_LIST_OF_OBJECT_PROPERTY_REFERENCES) {
if (list_element->array_index != BACNET_ARRAY_ALL) {
/* An array index is provided but the property is
not a BACnetARRAY of BACnetLIST.*/
list_element->error_class = ERROR_CLASS_PROPERTY;
list_element->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
} else {
list_element->error_code =
Timer_List_Of_Object_Property_References_Remove(
list_element->object_instance,
list_element->application_data,
list_element->application_data_len);
if (list_element->error_code == ERROR_CODE_SUCCESS) {
return BACNET_STATUS_OK;
}
if (list_element->error_code == ERROR_CODE_LIST_ELEMENT_NOT_FOUND) {
list_element->error_class = ERROR_CLASS_SERVICES;
}
}
} else {
list_element->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
}
return BACNET_STATUS_ERROR;
}
/**
* @brief Creates a Timer object
* @param object_instance - object-instance number of the object
* @return the object-instance that was created, or BACNET_MAX_INSTANCE
*/
uint32_t Timer_Create(uint32_t object_instance)
{
struct object_data *pObject = NULL;
int index;
unsigned i;
if (!Object_List) {
Object_List = Keylist_Create();
}
if (object_instance > BACNET_MAX_INSTANCE) {
return BACNET_MAX_INSTANCE;
} else if (object_instance == BACNET_MAX_INSTANCE) {
/* wildcard instance */
/* the Object_Identifier property of the newly created object
shall be initialized to a value that is unique within the
responding BACnet-user device. The method used to generate
the object identifier is a local matter.*/
object_instance = Keylist_Next_Empty_Key(Object_List, 1);
}
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
/* already exists - signal success but don't change data */
return object_instance;
}
pObject = calloc(1, sizeof(struct object_data));
if (!pObject) {
/* no RAM available - signal failure */
return BACNET_MAX_INSTANCE;
}
index = Keylist_Data_Add(Object_List, object_instance, pObject);
if (index < 0) {
/* unable to add to list - signal failure */
free(pObject);
return BACNET_MAX_INSTANCE;
}
pObject->Timer_State = TIMER_STATE_IDLE;
pObject->Last_State_Change = TIMER_TRANSITION_NONE;
datetime_wildcard_set(&pObject->Update_Time);
pObject->Initial_Timeout = 0;
pObject->Default_Timeout = 1000;
pObject->Min_Pres_Value = 1;
pObject->Max_Pres_Value = UINT32_MAX;
pObject->Resolution = 1;
pObject->Priority_For_Writing = BACNET_MAX_PRIORITY;
pObject->Description = NULL;
pObject->Object_Name = NULL;
pObject->Reliability = RELIABILITY_NO_FAULT_DETECTED;
pObject->Out_Of_Service = false;
pObject->Changed = false;
pObject->Context = NULL;
for (i = 0; i < BACNET_TIMER_MANIPULATED_PROPERTIES_MAX; i++) {
List_Of_Object_Property_References_Set(pObject, i, NULL);
}
return object_instance;
}
/**
* @brief Deletes an object-instance
* @param object_instance - object-instance number of the object
* @return true if the object-instance was deleted
*/
bool Timer_Delete(uint32_t object_instance)
{
bool status = false;
struct object_data *pObject =
Keylist_Data_Delete(Object_List, object_instance);
if (pObject) {
free(pObject);
status = true;
}
return status;
}
/**
* @brief Deletes all the objects and their data
*/
void Timer_Cleanup(void)
{
struct object_data *pObject;
if (Object_List) {
do {
pObject = Keylist_Data_Pop(Object_List);
if (pObject) {
free(pObject);
}
} while (pObject);
Keylist_Delete(Object_List);
Object_List = NULL;
}
}
/**
* Initializes the object data
*/
void Timer_Init(void)
{
if (!Object_List) {
Object_List = Keylist_Create();
}
}