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bacnet-stack/ports/at91sam7s/bv.c

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/**************************************************************************
*
* Copyright (C) 2006 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.
*
*********************************************************************/
/* Binary Value 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" /* the custom stuff */
#include "bv.h"
#include "handlers.h"
#ifndef MAX_BINARY_VALUES
#define MAX_BINARY_VALUES 8
#endif
#if (MAX_BINARY_VALUES > 9)
#error Modify the Binary_Value_Name to handle multiple digits
#endif
static BACNET_BINARY_PV Present_Value[MAX_BINARY_VALUES];
/* These three arrays are used by the ReadPropertyMultiple handler */
static const int Binary_Value_Properties_Required[] = {
PROP_OBJECT_IDENTIFIER,
PROP_OBJECT_NAME,
PROP_OBJECT_TYPE,
PROP_PRESENT_VALUE,
PROP_STATUS_FLAGS,
PROP_EVENT_STATE,
PROP_OUT_OF_SERVICE,
-1
};
static const int Binary_Value_Properties_Optional[] = {
PROP_DESCRIPTION,
-1
};
static const int Binary_Value_Properties_Proprietary[] = {
-1
};
void Binary_Value_Property_Lists(
const int **pRequired,
const int **pOptional,
const int **pProprietary)
{
if (pRequired)
*pRequired = Binary_Value_Properties_Required;
if (pOptional)
*pOptional = Binary_Value_Properties_Optional;
if (pProprietary)
*pProprietary = Binary_Value_Properties_Proprietary;
return;
}
void Binary_Value_Init(
void)
{
unsigned i;
for (i = 0; i < MAX_BINARY_VALUES; i++) {
Present_Value[i] = BINARY_INACTIVE;
}
}
/* we simply have 0-n object instances. */
bool Binary_Value_Valid_Instance(
uint32_t object_instance)
{
if (object_instance < MAX_BINARY_VALUES)
return true;
return false;
}
/* we simply have 0-n object instances. */
unsigned Binary_Value_Count(
void)
{
return MAX_BINARY_VALUES;
}
/* we simply have 0-n object instances. */
uint32_t Binary_Value_Index_To_Instance(
unsigned index)
{
return index;
}
/* we simply have 0-n object instances. */
unsigned Binary_Value_Instance_To_Index(
uint32_t object_instance)
{
unsigned index = MAX_BINARY_VALUES;
if (object_instance < MAX_BINARY_VALUES)
index = object_instance;
return index;
}
BACNET_BINARY_PV Binary_Value_Present_Value(
uint32_t object_instance)
{
BACNET_BINARY_PV value = BINARY_INACTIVE;
if (object_instance < MAX_BINARY_VALUES) {
value = Present_Value[object_instance];
}
return value;
}
/* note: the object name must be unique within this device */
bool Binary_Value_Object_Name(
uint32_t object_instance,
BACNET_CHARACTER_STRING * object_name)
{
static char text_string[16] = "BV-0"; /* okay for single thread */
bool status = false;
if (object_instance < MAX_BINARY_VALUES) {
text_string[3] = '0' + (uint8_t) object_instance;
status = characterstring_init_ansi(object_name, text_string);
}
return status;
}
/* return apdu len, or -1 on error */
int Binary_Value_Read_Property(
BACNET_READ_PROPERTY_DATA * rpdata)
{
int apdu_len = 0; /* return value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
BACNET_BINARY_PV present_value = BINARY_INACTIVE;
BACNET_POLARITY polarity = POLARITY_NORMAL;
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], OBJECT_BINARY_VALUE,
rpdata->object_instance);
break;
/* note: Name and Description don't have to be the same.
You could make Description writable and different */
case PROP_OBJECT_NAME:
case PROP_DESCRIPTION:
Binary_Value_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_BINARY_VALUE);
break;
case PROP_PRESENT_VALUE:
present_value =
Binary_Value_Present_Value(rpdata->object_instance);
apdu_len = encode_application_enumerated(&apdu[0], present_value);
break;
case PROP_STATUS_FLAGS:
/* note: see the details in the standard on how to use these */
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, false);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_EVENT_STATE:
/* note: see the details in the standard on how to use this */
apdu_len =
encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);
break;
case PROP_OUT_OF_SERVICE:
apdu_len = encode_application_boolean(&apdu[0], false);
break;
case PROP_POLARITY:
/* FIXME: figure out the polarity */
apdu_len = encode_application_enumerated(&apdu[0], polarity);
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 Binary_Value_Write_Property(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value */
unsigned int object_index = 0;
unsigned int priority = 0;
BACNET_BINARY_PV level = BINARY_NULL;
int len = 0;
BACNET_APPLICATION_DATA_VALUE value;
if (!Binary_Value_Valid_Instance(wp_data->object_instance)) {
wp_data->error_class = ERROR_CLASS_OBJECT;
wp_data->error_code = ERROR_CODE_UNKNOWN_OBJECT;
return false;
}
/* 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->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;
}
switch (wp_data->object_property) {
case PROP_PRESENT_VALUE:
if (value.tag == BACNET_APPLICATION_TAG_ENUMERATED) {
priority = wp_data->priority;
/* Command priority 6 is reserved for use by Minimum On/Off
algorithm and may not be used for other purposes in any
object. */
if (priority && (priority <= BACNET_MAX_PRIORITY) &&
(priority != 6 /* reserved */ ) &&
(value.type.Enumerated >= MIN_BINARY_PV) &&
(value.type.Enumerated <= MAX_BINARY_PV)) {
level = value.type.Enumerated;
object_index =
Binary_Value_Instance_To_Index
(wp_data->object_instance);
priority--;
/* NOTE: this Binary value has no priority array */
Present_Value[object_index] = level;
/* Note: you could set the physical output here if we
are the highest priority.
However, if Out of Service is TRUE, then don't set the
physical output. */
status = true;
} else if (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 {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_OUT_OF_SERVICE:
#if 0
if (value.tag == BACNET_APPLICATION_TAG_BOOLEAN) {
object_index =
Binary_Value_Instance_To_Index(wp_data->object_instance);
Binary_Value_Out_Of_Service[object_index] = value.type.Boolean;
status = true;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
#endif
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_NAME:
case PROP_DESCRIPTION:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
case PROP_PRIORITY_ARRAY:
case PROP_RELINQUISH_DEFAULT:
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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