skarg
588 lines
21 KiB
C
588 lines
21 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2007 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*********************************************************************/
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#include <stdbool.h>
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#include <stdint.h>
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#include "bacdef.h"
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#include "bacdcode.h"
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#include "bacstr.h"
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#include "bacenum.h"
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#include "apdu.h"
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#include "dlmstp.h"
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#include "rs485.h"
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#include "version.h"
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/* objects */
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#include "device.h"
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#include "ai.h"
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#include "av.h"
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#include "bi.h"
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#include "bv.h"
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#include "wp.h"
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#include "dcc.h"
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/* note: you really only need to define variables for
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properties that are writable or that may change.
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The properties that are constant can be hard coded
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into the read-property encoding. */
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static uint32_t Object_Instance_Number = 12345;
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static char Object_Name[32] = "ARM7 Device";
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static BACNET_DEVICE_STATUS System_Status = STATUS_OPERATIONAL;
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BACNET_REINITIALIZED_STATE_OF_DEVICE Reinitialize_State =
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REINITIALIZED_STATE_IDLE;
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void Device_Reinit(
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void)
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{
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dcc_set_status_duration(COMMUNICATION_ENABLE, 0);
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Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE);
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}
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void Device_Init(
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void)
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{
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Reinitialize_State = REINITIALIZED_STATE_IDLE;
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dcc_set_status_duration(COMMUNICATION_ENABLE, 0);
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/* FIXME: Get the data from the eeprom */
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/* I2C_Read_Block(EEPROM_DEVICE_ADDRESS,
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(char *)&Object_Instance_Number,
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sizeof(Object_Instance_Number),
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EEPROM_BACNET_ID_ADDR); */
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}
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/* methods to manipulate the data */
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uint32_t Device_Object_Instance_Number(
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void)
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{
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return Object_Instance_Number;
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}
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bool Device_Set_Object_Instance_Number(
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uint32_t object_id)
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{
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bool status = true; /* return value */
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if (object_id <= BACNET_MAX_INSTANCE) {
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Object_Instance_Number = object_id;
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/* FIXME: Write the data to the eeprom */
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/* I2C_Write_Block(
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EEPROM_DEVICE_ADDRESS,
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(char *)&Object_Instance_Number,
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sizeof(Object_Instance_Number),
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EEPROM_BACNET_ID_ADDR); */
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} else
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status = false;
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return status;
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}
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bool Device_Valid_Object_Instance_Number(
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uint32_t object_id)
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{
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/* BACnet allows for a wildcard instance number */
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return ((Object_Instance_Number == object_id) ||
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(object_id == BACNET_MAX_INSTANCE));
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}
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BACNET_DEVICE_STATUS Device_System_Status(
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void)
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{
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return System_Status;
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}
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void Device_Set_System_Status(
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BACNET_DEVICE_STATUS status)
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{
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if (status < MAX_DEVICE_STATUS)
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System_Status = status;
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}
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uint16_t Device_Vendor_Identifier(
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void)
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{
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return BACNET_VENDOR_ID;
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}
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uint8_t Device_Protocol_Version(
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void)
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{
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return 1;
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}
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uint8_t Device_Protocol_Revision(
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void)
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{
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return 5;
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}
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BACNET_SEGMENTATION Device_Segmentation_Supported(
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void)
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{
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return SEGMENTATION_NONE;
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}
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uint8_t Device_Database_Revision(
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void)
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{
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return 0;
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}
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unsigned Device_Object_List_Count(
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void)
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{
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unsigned count = 1; /* at least 1 for device object */
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/* FIXME: add objects as needed */
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count += Binary_Input_Count();
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count += Binary_Value_Count();
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count += Analog_Input_Count();
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count += Analog_Value_Count();
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return count;
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}
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bool Device_Object_List_Identifier(
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unsigned array_index,
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int *object_type,
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uint32_t * instance)
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{
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bool status = false;
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unsigned object_index = 0;
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unsigned object_count = 0;
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/* device object */
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if (array_index == 1) {
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*object_type = OBJECT_DEVICE;
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*instance = Object_Instance_Number;
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status = true;
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}
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/* normalize the index since
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we know it is not the previous objects */
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/* array index starts at 1 */
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object_index = array_index - 1;
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/* 1 for the device object */
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object_count = 1;
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/* FIXME: add objects as needed */
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/* binary value objects */
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if (!status) {
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object_index -= object_count;
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object_count = Binary_Value_Count();
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/* is it a valid index for this object? */
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if (object_index < object_count) {
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*object_type = OBJECT_BINARY_VALUE;
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*instance = Binary_Value_Index_To_Instance(object_index);
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status = true;
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}
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}
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/* analog input objects */
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if (!status) {
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/* array index starts at 1, and 1 for the device object */
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object_index -= object_count;
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object_count = Analog_Value_Count();
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if (object_index < object_count) {
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*object_type = OBJECT_ANALOG_VALUE;
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*instance = Analog_Value_Index_To_Instance(object_index);
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status = true;
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}
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}
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/* analog input objects */
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if (!status) {
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/* array index starts at 1, and 1 for the device object */
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object_index -= object_count;
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object_count = Analog_Input_Count();
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if (object_index < object_count) {
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*object_type = OBJECT_ANALOG_INPUT;
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*instance = Analog_Input_Index_To_Instance(object_index);
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status = true;
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}
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}
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/* binary input objects */
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if (!status) {
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/* normalize the index since
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we know it is not the previous objects */
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object_index -= object_count;
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object_count = Binary_Input_Count();
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/* is it a valid index for this object? */
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if (object_index < object_count) {
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*object_type = OBJECT_BINARY_INPUT;
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*instance = Binary_Input_Index_To_Instance(object_index);
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status = true;
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}
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}
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return status;
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}
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/* return the length of the apdu encoded or -1 for error */
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int Device_Encode_Property_APDU(
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uint8_t * apdu,
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uint32_t object_instance,
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BACNET_PROPERTY_ID property,
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int32_t array_index,
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BACNET_ERROR_CLASS * error_class,
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BACNET_ERROR_CODE * error_code)
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{
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int apdu_len = 0; /* return value */
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int len = 0; /* apdu len intermediate value */
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BACNET_BIT_STRING bit_string;
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BACNET_CHARACTER_STRING char_string;
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unsigned i = 0;
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int object_type = 0;
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uint32_t instance = 0;
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unsigned count = 0;
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BACNET_TIME local_time;
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BACNET_DATE local_date;
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object_instance = object_instance;
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/* FIXME: change the hardcoded names to suit your application */
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switch (property) {
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case PROP_OBJECT_IDENTIFIER:
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apdu_len =
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encode_application_object_id(&apdu[0], OBJECT_DEVICE,
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Object_Instance_Number);
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break;
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case PROP_OBJECT_NAME:
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characterstring_init_ansi(&char_string, Object_Name);
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_OBJECT_TYPE:
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apdu_len = encode_application_enumerated(&apdu[0], OBJECT_DEVICE);
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break;
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case PROP_DESCRIPTION:
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characterstring_init_ansi(&char_string, "BACnet Demo");
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_SYSTEM_STATUS:
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apdu_len =
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encode_application_enumerated(&apdu[0],
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Device_System_Status());
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break;
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case PROP_VENDOR_NAME:
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characterstring_init_ansi(&char_string, BACNET_VENDOR_NAME);
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_VENDOR_IDENTIFIER:
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apdu_len =
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encode_application_unsigned(&apdu[0],
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Device_Vendor_Identifier());
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break;
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case PROP_MODEL_NAME:
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characterstring_init_ansi(&char_string, "GNU Demo");
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_FIRMWARE_REVISION:
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characterstring_init_ansi(&char_string, BACnet_Version);
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_APPLICATION_SOFTWARE_VERSION:
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characterstring_init_ansi(&char_string, "1.0");
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_LOCATION:
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characterstring_init_ansi(&char_string, "USA");
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apdu_len =
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encode_application_character_string(&apdu[0], &char_string);
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break;
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case PROP_PROTOCOL_VERSION:
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apdu_len =
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encode_application_unsigned(&apdu[0],
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Device_Protocol_Version());
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break;
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case PROP_PROTOCOL_REVISION:
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apdu_len =
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encode_application_unsigned(&apdu[0],
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Device_Protocol_Revision());
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break;
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/* BACnet Legacy Support */
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case PROP_PROTOCOL_CONFORMANCE_CLASS:
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apdu_len = encode_application_unsigned(&apdu[0], 1);
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break;
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case PROP_PROTOCOL_SERVICES_SUPPORTED:
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/* Note: list of services that are executed, not initiated. */
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bitstring_init(&bit_string);
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for (i = 0; i < MAX_BACNET_SERVICES_SUPPORTED; i++) {
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/* automatic lookup based on handlers set */
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bitstring_set_bit(&bit_string, (uint8_t) i,
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apdu_service_supported(i));
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}
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apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
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break;
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case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
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/* Note: this is the list of objects that can be in this device,
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not a list of objects that this device can access */
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bitstring_init(&bit_string);
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for (i = 0; i < MAX_ASHRAE_OBJECT_TYPE; i++) {
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/* FIXME: if ReadProperty used an array of Functions... */
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/* initialize all the object types to not-supported */
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bitstring_set_bit(&bit_string, (uint8_t) i, false);
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}
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/* FIXME: indicate the objects that YOU support */
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bitstring_set_bit(&bit_string, OBJECT_DEVICE, true);
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bitstring_set_bit(&bit_string, OBJECT_ANALOG_VALUE, true);
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bitstring_set_bit(&bit_string, OBJECT_BINARY_VALUE, true);
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bitstring_set_bit(&bit_string, OBJECT_ANALOG_INPUT, true);
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bitstring_set_bit(&bit_string, OBJECT_BINARY_INPUT, true);
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apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
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break;
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case PROP_OBJECT_LIST:
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count = Device_Object_List_Count();
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/* Array element zero is the number of objects in the list */
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if (array_index == 0)
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apdu_len = encode_application_unsigned(&apdu[0], count);
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/* if no index was specified, then try to encode the entire list */
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/* into one packet. Note that more than likely you will have */
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/* to return an error if the number of encoded objects exceeds */
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/* your maximum APDU size. */
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else if (array_index == BACNET_ARRAY_ALL) {
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for (i = 1; i <= count; i++) {
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if (Device_Object_List_Identifier(i, &object_type,
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&instance)) {
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len =
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encode_application_object_id(&apdu[apdu_len],
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object_type, instance);
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apdu_len += len;
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/* assume next one is the same size as this one */
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/* can we all fit into the APDU? */
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if ((apdu_len + len) >= MAX_APDU) {
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*error_class = ERROR_CLASS_SERVICES;
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*error_code = ERROR_CODE_NO_SPACE_FOR_OBJECT;
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apdu_len = -1;
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break;
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}
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} else {
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/* error: internal error? */
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*error_class = ERROR_CLASS_SERVICES;
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*error_code = ERROR_CODE_OTHER;
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apdu_len = -1;
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break;
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}
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}
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} else {
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if (Device_Object_List_Identifier(array_index, &object_type,
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&instance))
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apdu_len =
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encode_application_object_id(&apdu[0], object_type,
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instance);
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else {
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*error_class = ERROR_CLASS_PROPERTY;
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*error_code = ERROR_CODE_INVALID_ARRAY_INDEX;
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apdu_len = -1;
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}
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}
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break;
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case PROP_MAX_APDU_LENGTH_ACCEPTED:
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apdu_len = encode_application_unsigned(&apdu[0], MAX_APDU);
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break;
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case PROP_SEGMENTATION_SUPPORTED:
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apdu_len =
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encode_application_enumerated(&apdu[0],
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Device_Segmentation_Supported());
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break;
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case PROP_APDU_TIMEOUT:
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apdu_len = encode_application_unsigned(&apdu[0], apdu_timeout());
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break;
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case PROP_NUMBER_OF_APDU_RETRIES:
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apdu_len = encode_application_unsigned(&apdu[0], apdu_retries());
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break;
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case PROP_DEVICE_ADDRESS_BINDING:
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/* FIXME: encode the list here, if it exists */
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break;
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case PROP_DATABASE_REVISION:
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apdu_len =
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encode_application_unsigned(&apdu[0],
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Device_Database_Revision());
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break;
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case PROP_MAX_INFO_FRAMES:
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apdu_len =
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encode_application_unsigned(&apdu[0],
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dlmstp_max_info_frames());
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break;
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case PROP_MAX_MASTER:
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apdu_len =
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encode_application_unsigned(&apdu[0], dlmstp_max_master());
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break;
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case PROP_LOCAL_TIME:
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/* FIXME: if you support time */
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local_time.hour = 0;
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local_time.min = 0;
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local_time.sec = 0;
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local_time.hundredths = 0;
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apdu_len = encode_application_time(&apdu[0], &local_time);
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break;
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case PROP_UTC_OFFSET:
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/* Note: BACnet Time Zone is offset of local time and UTC,
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rather than offset of GMT. It is expressed in minutes */
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apdu_len = encode_application_signed(&apdu[0], 5 * 60 /* EST */ );
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break;
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case PROP_LOCAL_DATE:
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/* FIXME: if you support date */
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local_date.year = 2006; /* AD */
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local_date.month = 4; /* Jan=1..Dec=12 */
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local_date.day = 11; /* 1..31 */
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local_date.wday = 0; /* 1=Mon..7=Sun */
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apdu_len = encode_application_date(&apdu[0], &local_date);
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break;
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case PROP_DAYLIGHT_SAVINGS_STATUS:
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/* FIXME: if you support time/date */
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apdu_len = encode_application_boolean(&apdu[0], false);
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break;
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case 9600:
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apdu_len =
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encode_application_unsigned(&apdu[0], RS485_Get_Baud_Rate());
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break;
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default:
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*error_class = ERROR_CLASS_PROPERTY;
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*error_code = ERROR_CODE_UNKNOWN_PROPERTY;
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apdu_len = -1;
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break;
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}
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return apdu_len;
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}
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bool Device_Write_Property(
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BACNET_WRITE_PROPERTY_DATA * wp_data,
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BACNET_ERROR_CLASS * error_class,
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BACNET_ERROR_CODE * error_code)
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{
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bool status = false; /* return value */
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int len = 0;
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BACNET_APPLICATION_DATA_VALUE value;
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if (!Device_Valid_Object_Instance_Number(wp_data->object_instance)) {
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*error_class = ERROR_CLASS_OBJECT;
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*error_code = ERROR_CODE_UNKNOWN_OBJECT;
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return false;
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}
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/* decode the some of the request */
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len =
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bacapp_decode_application_data(wp_data->application_data,
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wp_data->application_data_len, &value);
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/* FIXME: len < application_data_len: more data? */
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/* FIXME: len == 0: unable to decode? */
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switch (wp_data->object_property) {
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case PROP_OBJECT_IDENTIFIER:
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if (value.tag == BACNET_APPLICATION_TAG_OBJECT_ID) {
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if ((value.type.Object_Id.type == OBJECT_DEVICE) &&
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(Device_Set_Object_Instance_Number(value.type.
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Object_Id.instance))) {
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/* we could send an I-Am broadcast to let the world know */
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status = true;
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} else {
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*error_class = ERROR_CLASS_PROPERTY;
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*error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
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}
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} else {
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*error_class = ERROR_CLASS_PROPERTY;
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*error_code = ERROR_CODE_INVALID_DATA_TYPE;
|
|
}
|
|
break;
|
|
case PROP_MAX_INFO_FRAMES:
|
|
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
|
|
if (value.type.Unsigned_Int <= 255) {
|
|
dlmstp_set_max_info_frames(value.type.Unsigned_Int);
|
|
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_MAX_MASTER:
|
|
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
|
|
if ((value.type.Unsigned_Int > 0) &&
|
|
(value.type.Unsigned_Int <= 127)) {
|
|
dlmstp_set_max_master(value.type.Unsigned_Int);
|
|
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_OBJECT_NAME:
|
|
if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
|
|
uint8_t encoding;
|
|
size_t len;
|
|
|
|
encoding =
|
|
characterstring_encoding(&value.type.Character_String);
|
|
len = characterstring_length(&value.type.Character_String);
|
|
if (encoding == CHARACTER_ANSI_X34) {
|
|
if (len <= 20) {
|
|
/* FIXME: set the name */
|
|
/* Display_Set_Name(
|
|
characterstring_value(&value.type.Character_String)); */
|
|
/* FIXME: All the object names in a device must be unique.
|
|
Disallow setting the Device Object Name to any objects in
|
|
the device. */
|
|
} else {
|
|
*error_class = ERROR_CLASS_PROPERTY;
|
|
*error_code = ERROR_CODE_NO_SPACE_TO_WRITE_PROPERTY;
|
|
}
|
|
} else {
|
|
*error_class = ERROR_CLASS_PROPERTY;
|
|
*error_code = ERROR_CODE_CHARACTER_SET_NOT_SUPPORTED;
|
|
}
|
|
} else {
|
|
*error_class = ERROR_CLASS_PROPERTY;
|
|
*error_code = ERROR_CODE_INVALID_DATA_TYPE;
|
|
}
|
|
break;
|
|
case 9600:
|
|
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
|
|
if (value.type.Unsigned_Int > 115200) {
|
|
RS485_Set_Baud_Rate(value.type.Unsigned_Int);
|
|
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;
|
|
default:
|
|
*error_class = ERROR_CLASS_PROPERTY;
|
|
*error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
|
|
break;
|
|
}
|
|
|
|
return status;
|
|
}
|