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Patrick Grimm
2013-03-21 22:53:31 +01:00
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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 "hardware.h"
#include "bacdef.h"
#include "bacdcode.h"
#include "bacenum.h"
#include "config.h" /* the custom stuff */
#include "wp.h"
#include "bv.h"
#if (MAX_BINARY_VALUES > 10)
#error Modify the Binary_Value_Name to handle multiple digits
#endif
static BACNET_BINARY_PV Present_Value[MAX_BINARY_VALUES];
/* 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;
}
static 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 */
char *Binary_Value_Name(
uint32_t object_instance)
{
static char text_string[5] = "BV-0"; /* okay for single thread */
if (object_instance < MAX_BINARY_VALUES) {
text_string[3] = '0' + (uint8_t) object_instance;
return text_string;
}
return NULL;
}
/* return apdu len, or -1 on error */
int Binary_Value_Encode_Property_APDU(
uint8_t * apdu,
uint32_t object_instance,
BACNET_PROPERTY_ID property,
uint32_t array_index,
BACNET_ERROR_CLASS * error_class,
BACNET_ERROR_CODE * error_code)
{
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;
switch (property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0], OBJECT_BINARY_VALUE,
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:
characterstring_init_ansi(&char_string,
Binary_Value_Name(object_instance));
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(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:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = -1;
break;
}
/* only array properties can have array options */
if ((apdu_len >= 0) && (array_index != BACNET_ARRAY_ALL)) {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
apdu_len = -1;
}
return apdu_len;
}
/* returns true if successful */
bool Binary_Value_Write_Property(
BACNET_WRITE_PROPERTY_DATA * wp_data,
BACNET_ERROR_CLASS * error_class,
BACNET_ERROR_CODE * error_code)
{
bool status = false; /* return value */
unsigned int object_index = 0;
int len = 0;
BACNET_APPLICATION_DATA_VALUE value;
if (!Binary_Value_Valid_Instance(wp_data->object_instance)) {
*error_class = ERROR_CLASS_OBJECT;
*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 */
*error_class = ERROR_CLASS_PROPERTY;
*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 */
*error_class = ERROR_CLASS_PROPERTY;
*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) {
if ((value.type.Enumerated == BINARY_ACTIVE) ||
(value.type.Enumerated == BINARY_INACTIVE)) {
object_index =
Binary_Value_Instance_To_Index
(wp_data->object_instance);
/* NOTE: this Binary value has no priority array */
Present_Value[object_index] =
(BACNET_BINARY_PV) value.type.Enumerated;
/* 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. */
if (Present_Value[0] == BINARY_ACTIVE) {
LED_GREEN_ON();
} else {
LED_GREEN_OFF();
}
status = true;
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
*error_class = ERROR_CLASS_PROPERTY;
*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 {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
#endif
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_NAME:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
case PROP_POLARITY:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
break;
default:
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
break;
}
return status;
}
#ifdef TEST
#include <assert.h>
#include <string.h>
#include "ctest.h"
void testBinary_Value(
Test * pTest)
{
uint8_t apdu[MAX_APDU] = { 0 };
int len = 0;
uint32_t len_value = 0;
uint8_t tag_number = 0;
BACNET_OBJECT_TYPE decoded_type = OBJECT_BINARY_VALUE;
uint32_t decoded_instance = 0;
uint32_t instance = 123;
BACNET_ERROR_CLASS error_class;
BACNET_ERROR_CODE error_code;
len =
Binary_Value_Encode_Property_APDU(&apdu[0], instance,
PROP_OBJECT_IDENTIFIER, BACNET_ARRAY_ALL, &error_class, &error_code);
ct_test(pTest, len != 0);
len = decode_tag_number_and_value(&apdu[0], &tag_number, &len_value);
ct_test(pTest, tag_number == BACNET_APPLICATION_TAG_OBJECT_ID);
len =
decode_object_id(&apdu[len], (int *) &decoded_type, &decoded_instance);
ct_test(pTest, decoded_type == OBJECT_BINARY_VALUE);
ct_test(pTest, decoded_instance == instance);
return;
}
#ifdef TEST_BINARY_VALUE
int main(
void)
{
Test *pTest;
bool rc;
pTest = ct_create("BACnet Binary_Value", NULL);
/* individual tests */
rc = ct_addTestFunction(pTest, testBinary_Value);
assert(rc);
ct_setStream(pTest, stdout);
ct_run(pTest);
(void) ct_report(pTest);
ct_destroy(pTest);
return 0;
}
#endif /* TEST_BINARY_VALUE */
#endif /* TEST */