/**************************************************************************
*
* Copyright (C) 2006 Steve Karg <skarg@users.sourceforge.net>
* Copyright (C) 2011 Krzysztof Malorny <malornykrzysztof@gmail.com>
* Copyright (C) 2017 Mario de Sousa <msousa@fe.up.pt>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
/* Analog Value Objects - customize for your use */
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <math.h> /* NAN maro */
#include "config_bacnet_for_beremiz_%(locstr)s.h" /* the custom configuration for beremiz plugin */
#include "bacdef.h"
#include "bacdcode.h"
#include "bacenum.h"
#include "bacapp.h"
#include "bactext.h"
#include "device_%(locstr)s.h"
#include "handlers.h"
#include "av_%(locstr)s.h"
/* we choose to have a NULL level in our system represented by */
/* a particular value. When the priorities are not in use, they */
/* will be relinquished (i.e. set to the NULL level). */
/* Since the values are floats, we use NAN (Not A Number) as our NULL value. */
/* WARNING: Never use comparisons like 'if (value == AO_LEVEL_NULL)'
* as it will always return false, even if both values are NAN.
* Use instead the negated version 'if (value != AO_LEVEL_NULL)'
* and add an 'else' to the 'if' condition if necessary.
* However, some compilers may screw this up if they do not
* implement IEEE 754 properly. It is probably best to stick with
* the isnan() macro if available.
*/
#define AV_VALUE_NULL NAN
#define AV_VALUE_IS_NULL(x) (isnan(x))
/* When all the priorities are level null, the present value returns */
/* the Relinquish Default value */
#define AV_VALUE_RELINQUISH_DEFAULT (0.0)
/* The IEC 61131-3 located variables mapped onto the Analog Value objects of BACnet protocol */
%(AV_lvars)s
/* The array where we keep all the state related to the Analog Value Objects */
#define MAX_ANALOG_VALUES %(AV_count)s
static ANALOG_VALUE_DESCR AV_Descr[MAX_ANALOG_VALUES] = {
%(AV_param)s
};
/* These three arrays are used by the ReadPropertyMultiple handler,
* as well as to initialize the XXX_Property_List used by the
* Property List (PROP_PROPERTY_LIST) property.
*/
static const int Analog_Value_Properties_Required[] = {
/* (1) Currently Supported */
/* (2) Required by standard ASHRAE 135-2016 */
/*(1)(2) */
PROP_OBJECT_IDENTIFIER, /* R R ( 75) */
PROP_OBJECT_NAME, /* R R ( 77) */
PROP_OBJECT_TYPE, /* R R ( 79) */
PROP_PRESENT_VALUE, /* W R ( 85) */
PROP_STATUS_FLAGS, /* R R (111) */
PROP_EVENT_STATE, /* R R ( 36) */
PROP_OUT_OF_SERVICE, /* W R ( 81) */
PROP_UNITS, /* W R (117) */
// PROP_PROPERTY_LIST, /* R R (371) */
-1
};
static const int Analog_Value_Properties_Optional[] = {
/* (1) Currently Supported */
/* (2) Required by standard ASHRAE 135-2016 */
/*(1)(2) */
PROP_DESCRIPTION, /* R O ( 28) */
/* required if Present_Value is writable (which is true in our case!) */
PROP_PRIORITY_ARRAY, /* R O ( 87) */
PROP_RELINQUISH_DEFAULT, /* R O (104) */
// PROP_CURRENT_COMMAND_PRIORITY,/* R O (431) */
-1
};
static const int Analog_Value_Properties_Proprietary[] = {
-1
};
/* This array stores the PROPERTY_LIST which may be read by clients.
* End of list is marked by following the last element with the value '-1'
*
* It is initialized by Analog_Values_Init() based off the values
* stored in Analog_Value_Properties_Required
* Analog_Value_Properties_Optional
* Analog_Value_Properties_Proprietary
*/
/* TODO: Allocate memory for this array with malloc() at startup */
static int Analog_Value_Properties_List[64];
/********************************************************/
/** Callback functions. **/
/** Functions required by BACnet devie implementation. **/
/********************************************************/
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
void Analog_Value_Property_Lists(
const int **pRequired,
const int **pOptional,
const int **pProprietary)
{
if (pRequired)
*pRequired = Analog_Value_Properties_Required;
if (pOptional)
*pOptional = Analog_Value_Properties_Optional;
if (pProprietary)
*pProprietary = Analog_Value_Properties_Proprietary;
return;
}
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
void Analog_Value_Init(
void)
{
unsigned i, j;
static bool initialized = false;
if (!initialized) {
initialized = true;
/* initialize the Analog_Value_Properties_List array */
int len = 0;
len += BACnet_Init_Properties_List(Analog_Value_Properties_List + len,
Analog_Value_Properties_Required);
len += BACnet_Init_Properties_List(Analog_Value_Properties_List + len,
Analog_Value_Properties_Optional);
len += BACnet_Init_Properties_List(Analog_Value_Properties_List + len,
Analog_Value_Properties_Proprietary);
for (i = 0; i < MAX_ANALOG_VALUES; i++) {
// MJS: the following line in th original demo code was commented out so we do not
// overwrite the initial values configured by the user in beremiz IDE
// memset(&AV_Descr[i], 0x00, sizeof(ANALOG_VALUE_DESCR));
for (j = 0; j < BACNET_MAX_PRIORITY; j++) {
AV_Descr[i].Present_Value[j] = AV_VALUE_NULL;
}
AV_Descr[i].Out_Of_Service = 0;
AV_Descr[i].Event_State = 0;
// AV_Descr[i].Units = UNITS_NO_UNITS;
}
}
}
/* validate that the given instance exists */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
bool Analog_Value_Valid_Instance(
uint32_t object_instance)
{
return (Analog_Value_Instance_To_Index(object_instance) < MAX_ANALOG_VALUES);
}
/* the number of Analog Value Objects */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
unsigned Analog_Value_Count(void) {return MAX_ANALOG_VALUES;}
/* returns the instance (i.e. Object Identifier) that correlates to the correct index */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
uint32_t Analog_Value_Index_To_Instance(unsigned index) {return AV_Descr[index].Object_Identifier;}
/* returns the index that correlates to the correct instance number (Object Identifier) */
unsigned Analog_Value_Instance_To_Index(
uint32_t object_instance)
{
unsigned index = 0;
for (index = 0; index < MAX_ANALOG_VALUES; index++)
if (object_instance == AV_Descr[index].Object_Identifier)
return index;
/* error, this object ID is not in our list! */
return MAX_ANALOG_VALUES;
}
float Analog_Value_Present_Value(
uint32_t object_instance)
{
float value = AV_VALUE_RELINQUISH_DEFAULT;
unsigned index = 0;
unsigned i = 0;
index = Analog_Value_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_VALUES) {
for (i = 0; i < BACNET_MAX_PRIORITY; i++) {
if (!AV_VALUE_IS_NULL(AV_Descr[index].Present_Value[i])) {
value = AV_Descr[index].Present_Value[i];
break;
}
}
}
return value;
}
/* returns command priority (1..16), or 0 if all priority values are at NULL */
int Analog_Value_Current_Command_Priority(
uint32_t object_instance)
{
unsigned index = 0;
unsigned i = 0;
index = Analog_Value_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_VALUES) {
for (i = 0; i < BACNET_MAX_PRIORITY; i++) {
if (!AV_VALUE_IS_NULL(AV_Descr[index].Present_Value[i])) {
return i+1; // +1 since priority is 1..16, and not 0..15
}
}
}
// command values in all priorities are set to NULL
return 0;
}
/* For a given object instance-number, sets the present-value at a given
* priority 1..16 (except 6, see ASHRAE 135-2016, section 19.2.2)
*/
bool Analog_Value_Present_Value_Set(
uint32_t object_instance,
float value,
uint8_t priority)
{
unsigned index = 0;
index = Analog_Value_Instance_To_Index(object_instance);
if (index >= MAX_ANALOG_VALUES)
return false;
if ((priority == 0) || (priority > BACNET_MAX_PRIORITY) ||
(priority == 6 /* reserved, ASHRAE 135-2016, section 19.2.2 */))
return false;
priority--;
AV_Descr[index].Present_Value[priority] = value;
return true;
}
bool Analog_Value_Present_Value_Relinquish(
uint32_t object_instance,
unsigned priority)
{
unsigned index = 0;
index = Analog_Value_Instance_To_Index(object_instance);
if (index >= MAX_ANALOG_VALUES)
return false;
if ((priority == 0) || (priority > BACNET_MAX_PRIORITY) ||
(priority == 6 /* reserved, ASHRAE 135-2016, section 19.2.2 */))
return false;
priority--;
AV_Descr[index].Present_Value[priority] = AV_VALUE_NULL;
return true;
}
/* note: the object name must be unique within this device */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
bool Analog_Value_Object_Name(
uint32_t object_instance,
BACNET_CHARACTER_STRING * object_name)
{
bool status = false;
unsigned index = Analog_Value_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_VALUES)
status = characterstring_init_ansi(object_name, AV_Descr[index].Object_Name);
return status;
}
bool Analog_Value_Object_Description(
uint32_t object_instance,
BACNET_CHARACTER_STRING * object_name)
{
bool status = false;
unsigned index = Analog_Value_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_VALUES)
status = characterstring_init_ansi(object_name, AV_Descr[index].Description);
return status;
}
/* return apdu len, or BACNET_STATUS_ERROR on error */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
int Analog_Value_Read_Property(
BACNET_READ_PROPERTY_DATA * rpdata)
{
int apdu_len = 0; /* return value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
float real_value = (float) 1.414;
unsigned object_index = 0;
bool state = false;
uint8_t *apdu = NULL;
ANALOG_VALUE_DESCR *CurrentAV;
if ((rpdata == NULL) || (rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
object_index = Analog_Value_Instance_To_Index(rpdata->object_instance);
if (object_index >= MAX_ANALOG_VALUES) {
rpdata->error_class = ERROR_CLASS_OBJECT;
rpdata->error_code = ERROR_CODE_UNKNOWN_OBJECT;
return BACNET_STATUS_ERROR;
}
switch (rpdata->object_property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0], OBJECT_ANALOG_VALUE,
rpdata->object_instance);
break;
case PROP_OBJECT_NAME:
Analog_Value_Object_Name(rpdata->object_instance, &char_string);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_DESCRIPTION:
Analog_Value_Object_Description(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_ANALOG_VALUE);
break;
case PROP_PRESENT_VALUE:
real_value = Analog_Value_Present_Value(rpdata->object_instance);
apdu_len = encode_application_real(&apdu[0], real_value);
break;
case PROP_STATUS_FLAGS:
bitstring_init(&bit_string);
bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE,
AV_Descr[object_index].Out_Of_Service);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_EVENT_STATE:
apdu_len =
encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);
break;
case PROP_OUT_OF_SERVICE:
state = AV_Descr[object_index].Out_Of_Service;
apdu_len = encode_application_boolean(&apdu[0], state);
break;
case PROP_PRIORITY_ARRAY:
BACnet_encode_array(AV_Descr[object_index].Present_Value,
BACNET_MAX_PRIORITY,
AV_VALUE_IS_NULL,
encode_application_real)
break;
// case PROP_CURRENT_COMMAND_PRIORITY: {
// unsigned i = Analog_Value_Current_Command_Priority(rpdata->object_instance);
// if (i == 0) apdu_len = encode_application_null (&apdu[0]);
// else apdu_len = encode_application_unsigned(&apdu[0], i);
// break;
// }
case PROP_RELINQUISH_DEFAULT:
real_value = AV_VALUE_RELINQUISH_DEFAULT;
apdu_len = encode_application_real(&apdu[0], real_value);
break;
case PROP_UNITS:
apdu_len =
encode_application_enumerated(&apdu[0], AV_Descr[object_index].Units);
break;
// case PROP_PROPERTY_LIST:
// BACnet_encode_array(Analog_Value_Properties_List,
// property_list_count(Analog_Value_Properties_List),
// retfalse, encode_application_enumerated);
// break;
default:
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = BACNET_STATUS_ERROR;
break;
}
/* only array properties can have array options */
if ((apdu_len >= 0) && (rpdata->object_property != PROP_PRIORITY_ARRAY) &&
(rpdata->object_property != PROP_EVENT_TIME_STAMPS) &&
// (rpdata->object_property != PROP_PROPERTY_LIST) &&
(rpdata->array_index != BACNET_ARRAY_ALL)) {
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
apdu_len = BACNET_STATUS_ERROR;
}
return apdu_len;
}
/* returns true if successful */
/* This is a callback function. Callback set in My_Object_Table[] array declared in device.c, */
bool Analog_Value_Write_Property(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value */
unsigned int object_index = 0;
int len = 0;
BACNET_APPLICATION_DATA_VALUE value;
ANALOG_VALUE_DESCR *CurrentAV;
/* decode the some of the request */
len =
bacapp_decode_application_data(wp_data->application_data,
wp_data->application_data_len, &value);
/* FIXME: len < application_data_len: more data? */
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;
}
if ((wp_data->object_property != PROP_PRIORITY_ARRAY) &&
(wp_data->object_property != PROP_EVENT_TIME_STAMPS) &&
(wp_data->array_index != BACNET_ARRAY_ALL)) {
/* only array properties can have array options */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
return false;
}
object_index = Analog_Value_Instance_To_Index(wp_data->object_instance);
if (object_index < MAX_ANALOG_VALUES)
CurrentAV = &AV_Descr[object_index];
else
return false;
switch (wp_data->object_property) {
case PROP_PRESENT_VALUE:
if (value.tag == BACNET_APPLICATION_TAG_REAL) {
if (Analog_Value_Present_Value_Set(wp_data->object_instance,
value.type.Real, wp_data->priority)) {
status = true;
} else if (wp_data->priority == 6) {
/* Command priority 6 is reserved for use by Minimum On/Off
algorithm and may not be used for other purposes in any
object. */
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_VALUE_OUT_OF_RANGE;
}
} else {
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_NULL,
&wp_data->error_class, &wp_data->error_code);
if (status) {
status =
Analog_Value_Present_Value_Relinquish
(wp_data->object_instance, wp_data->priority);
}
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:
{
bool Previous_Out_Of_Service = CurrentAV->Out_Of_Service;
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN,
&wp_data->error_class, &wp_data->error_code);
if (status) {
CurrentAV->Out_Of_Service = value.type.Boolean;
if (Previous_Out_Of_Service && !CurrentAV->Out_Of_Service)
/* We have just changed from Out_of_Service -> In Service */
/* We need to update the Present_Value to the value
* currently in the PLC...
*/
CurrentAV->Present_Value[BACNET_MAX_PRIORITY-1] =
*(CurrentAV->Located_Var_ptr);
}
break;
}
case PROP_UNITS:
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_ENUMERATED,
&wp_data->error_class, &wp_data->error_code);
if (status) {
CurrentAV->Units = value.type.Enumerated;
}
break;
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_NAME:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
case PROP_DESCRIPTION:
case PROP_RELINQUISH_DEFAULT:
case PROP_PRIORITY_ARRAY:
// case PROP_PROPERTY_LIST:
// case PROP_CURRENT_COMMAND_PRIORITY:
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
break;
default:
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
break;
}
return status;
}
/********************************************/
/** Functions required for Beremiz plugin **/
/********************************************/
void Analog_Value_Copy_Present_Value_to_Located_Var(void) {
unsigned i;
for (i = 0; i < MAX_ANALOG_VALUES; i++) {
// decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true
if (AV_Descr[i].Out_Of_Service)
continue;
// copy the value
*(AV_Descr[i].Located_Var_ptr) = Analog_Value_Present_Value(AV_Descr[i].Object_Identifier);
}
}
void Analog_Value_Copy_Located_Var_to_Present_Value(void) {
unsigned i;
for (i = 0; i < MAX_ANALOG_VALUES; i++) {
// decouple PLC's Located Variable from Bacnet Object's Present Value if Out_Of_Service is true
if (AV_Descr[i].Out_Of_Service)
continue;
// copy the value
AV_Descr[i].Present_Value[BACNET_MAX_PRIORITY-1] = *(AV_Descr[i].Located_Var_ptr);
}
}