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bacnet-stack/ports/xplained/ai.c

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/**************************************************************************
*
* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
*
* 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 Input Objects customize for your use */
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "bacdef.h"
#include "bacdcode.h"
#include "bacenum.h"
#include "config.h"
#include "ai.h"
#include "handlers.h"
#ifndef MAX_ANALOG_INPUTS
#define MAX_ANALOG_INPUTS 2
#endif
static float Present_Value[MAX_ANALOG_INPUTS];
static bool Out_Of_Service[MAX_ANALOG_INPUTS];
static BACNET_ENGINEERING_UNITS Units[MAX_ANALOG_INPUTS];
/* These three arrays are used by the ReadPropertyMultiple handler */
static const int Analog_Input_Properties_Required[] = {
PROP_OBJECT_IDENTIFIER,
PROP_OBJECT_NAME,
PROP_OBJECT_TYPE,
PROP_PRESENT_VALUE,
PROP_STATUS_FLAGS,
PROP_EVENT_STATE,
PROP_OUT_OF_SERVICE,
PROP_UNITS,
-1
};
static const int Analog_Input_Properties_Optional[] = {
-1
};
static const int Analog_Input_Properties_Proprietary[] = {
-1
};
void Analog_Input_Property_Lists(
const int **pRequired,
const int **pOptional,
const int **pProprietary)
{
if (pRequired)
*pRequired = Analog_Input_Properties_Required;
if (pOptional)
*pOptional = Analog_Input_Properties_Optional;
if (pProprietary)
*pProprietary = Analog_Input_Properties_Proprietary;
return;
}
void Analog_Input_Init(
void)
{
return;
}
/* we simply have 0-n object instances. */
uint32_t Analog_Input_Index_To_Instance(
unsigned index)
{
return index;
}
/* we simply have 0-n object instances. */
unsigned Analog_Input_Instance_To_Index(
uint32_t instance)
{
return instance;
}
/* we simply have 0-n object instances. Yours might be */
/* more complex, and then you need validate that the */
/* given instance exists */
bool Analog_Input_Valid_Instance(
uint32_t object_instance)
{
unsigned index = 0;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
return true;
}
return false;
}
/* we simply have 0-n object instances. */
unsigned Analog_Input_Count(
void)
{
return MAX_ANALOG_INPUTS;
}
bool Analog_Input_Object_Name(
uint32_t object_instance,
BACNET_CHARACTER_STRING * object_name)
{
static char text_string[32]; /* okay for single thread */
bool status = false;
unsigned index = 0;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
sprintf(text_string, "AI-%lu", object_instance);
status = characterstring_init_ansi(object_name, text_string);
}
return status;
}
float Analog_Input_Present_Value(
uint32_t object_instance)
{
float value = 0.0;
unsigned index = 0;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
value = Present_Value[index];
}
return value;
}
void Analog_Input_Present_Value_Set(
uint32_t object_instance,
float value)
{
unsigned index = 0;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
Present_Value[index] = value;
}
}
bool Analog_Input_Out_Of_Service(
uint32_t object_instance)
{
unsigned index = 0;
bool value = false;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
value = Out_Of_Service[index];
}
return value;
}
void Analog_Input_Out_Of_Service_Set(
uint32_t object_instance,
bool value)
{
unsigned index = 0;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
Out_Of_Service[index] = value;
}
}
bool Analog_Input_Units_Set(
uint32_t object_instance,
uint16_t value)
{
unsigned index = 0;
bool status = false;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
Units[index] = value;
status = true;
}
return status;
}
uint16_t Analog_Input_Units(
uint32_t object_instance)
{
unsigned index = 0;
uint16_t value = UNITS_NO_UNITS;
index = Analog_Input_Instance_To_Index(object_instance);
if (index < MAX_ANALOG_INPUTS) {
value = Units[index];
}
return value;
}
/* return apdu length, or -1 on error */
/* assumption - object already exists */
int Analog_Input_Read_Property(
BACNET_READ_PROPERTY_DATA * rpdata)
{
int apdu_len = 0; /* return value */
BACNET_CHARACTER_STRING char_string = { 0 };
BACNET_BIT_STRING bit_string = { 0 };
uint8_t *apdu = NULL;
if ((rpdata == NULL) || (rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
switch (rpdata->object_property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0], rpdata->object_type,
rpdata->object_instance);
break;
case PROP_OBJECT_NAME:
Analog_Input_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], rpdata->object_type);
break;
case PROP_PRESENT_VALUE:
apdu_len =
encode_application_real(&apdu[0],
Analog_Input_Present_Value(rpdata->object_instance));
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,
Analog_Input_Out_Of_Service(rpdata->object_instance));
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:
apdu_len = encode_application_boolean(&apdu[0],
Analog_Input_Out_Of_Service(rpdata->object_instance));
break;
case PROP_UNITS:
apdu_len = encode_application_enumerated(&apdu[0],
Analog_Input_Units(rpdata->object_instance));
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->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 */
bool Analog_Input_Write_Property(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value */
int len = 0;
BACNET_APPLICATION_DATA_VALUE value;
/* 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;
}
/* only array properties can have array options */
if ((wp_data->object_property != PROP_EVENT_TIME_STAMPS) &&
(wp_data->array_index != BACNET_ARRAY_ALL)) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
return false;
}
switch ((int) wp_data->object_property) {
case PROP_PRESENT_VALUE:
status = WPValidateArgType(&value, BACNET_APPLICATION_TAG_REAL,
&wp_data->error_class, &wp_data->error_code);
if (status) {
if (Analog_Input_Out_Of_Service(wp_data->object_instance)) {
Analog_Input_Present_Value_Set(wp_data->object_instance,
value.type.Real);
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
status = false;
}
}
break;
case PROP_OUT_OF_SERVICE:
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN,
&wp_data->error_class, &wp_data->error_code);
if (status) {
Analog_Input_Out_Of_Service_Set(
wp_data->object_instance,
value.type.Boolean);
}
break;
case PROP_UNITS:
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_ENUMERATED,
&wp_data->error_class, &wp_data->error_code);
if (status) {
Analog_Input_Out_Of_Service_Set(
wp_data->object_instance,
value.type.Enumerated);
}
break;
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_NAME:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
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;
}
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