skarg
1cc71f8d14
Modified the device object to handle having the string properties changed via WriteProperty service. Updated the unit tests. Updated the demo objects.
338 lines
8.5 KiB
C
338 lines
8.5 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2005 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 <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <time.h>
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#include "config.h"
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#include "address.h"
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#include "bacdef.h"
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#include "handlers.h"
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#include "bacdcode.h"
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#include "npdu.h"
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#include "apdu.h"
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#include "iam.h"
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#include "tsm.h"
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#include "device.h"
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#include "bacfile.h"
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#include "datalink.h"
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#include "net.h"
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// This is an example application using the BACnet Stack on Linux
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// buffers used for receiving
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static uint8_t Rx_Buf[MAX_MPDU] = {0};
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static void LocalIAmHandler(
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uint8_t *service_request,
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uint16_t service_len,
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BACNET_ADDRESS *src)
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{
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int len = 0;
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uint32_t device_id = 0;
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unsigned max_apdu = 0;
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int segmentation = 0;
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uint16_t vendor_id = 0;
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(void)src;
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(void)service_len;
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len = iam_decode_service_request(
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service_request,
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&device_id,
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&max_apdu,
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&segmentation,
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&vendor_id);
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fprintf(stderr,"Received I-Am Request");
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if (len != -1)
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{
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fprintf(stderr," from %u!\n",device_id);
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address_add(device_id,
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max_apdu,
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src);
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}
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else
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fprintf(stderr,"!\n");
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return;
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}
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static void Read_Properties(void)
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{
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uint32_t device_id = 0;
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bool status = false;
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unsigned max_apdu = 0;
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BACNET_ADDRESS src;
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bool next_device = false;
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static unsigned index = 0;
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static unsigned property = 0;
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/* list of required (and some optional and proprietary)
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properties in the Device Object. Note that this demo
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tests for error messages so that the device doesn't have
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to have all the properties listed here. */
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const int object_props[] =
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{
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PROP_OBJECT_IDENTIFIER,
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PROP_OBJECT_NAME,
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PROP_OBJECT_TYPE,
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PROP_SYSTEM_STATUS,
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PROP_VENDOR_NAME,
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PROP_VENDOR_IDENTIFIER,
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PROP_MODEL_NAME,
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PROP_FIRMWARE_REVISION,
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PROP_APPLICATION_SOFTWARE_VERSION,
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PROP_PROTOCOL_VERSION,
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PROP_PROTOCOL_CONFORMANCE_CLASS,
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PROP_PROTOCOL_SERVICES_SUPPORTED,
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PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED,
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PROP_MAX_APDU_LENGTH_ACCEPTED,
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PROP_SEGMENTATION_SUPPORTED,
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PROP_LOCAL_TIME,
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PROP_LOCAL_DATE,
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PROP_UTC_OFFSET,
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PROP_DAYLIGHT_SAVINGS_STATUS,
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PROP_APDU_SEGMENT_TIMEOUT,
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PROP_APDU_TIMEOUT,
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PROP_NUMBER_OF_APDU_RETRIES,
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PROP_TIME_SYNCHRONIZATION_RECIPIENTS,
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PROP_MAX_MASTER,
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PROP_MAX_INFO_FRAMES,
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PROP_DEVICE_ADDRESS_BINDING,
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/* note: PROP_OBJECT_LIST is missing because
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the result can be very large. Read index 0
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which gives us the number of objects in the list,
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and then we can read index 1, 2.. n one by one,
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rather than trying to read the entire object
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list in one message. */
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/* some proprietary properties */
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514,515,
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/* end of list */
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-1
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};
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if (address_count())
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{
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if (address_get_by_index(index, &device_id, &max_apdu, &src))
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{
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if (object_props[property] < 0)
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next_device = true;
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else
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{
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/* note: if we wanted to do this synchronously, we would get the
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invoke ID from the sending of the request, and wait until we
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got the reply with matching invoke ID or the TSM of the
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invoke ID expired. This demo is doing things asynchronously. */
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status = Send_Read_Property_Request(
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device_id, // destination device
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OBJECT_DEVICE,
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device_id,
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object_props[property],
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BACNET_ARRAY_ALL);
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if (status)
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property++;
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}
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}
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else
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next_device = true;
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if (next_device)
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{
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next_device = false;
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index++;
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if (index >= MAX_ADDRESS_CACHE)
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index = 0;
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property = 0;
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}
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}
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return;
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}
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static void Init_Service_Handlers(void)
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{
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// we need to handle who-is to support dynamic device binding
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apdu_set_unconfirmed_handler(
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SERVICE_UNCONFIRMED_WHO_IS,
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WhoIsHandler);
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apdu_set_unconfirmed_handler(
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SERVICE_UNCONFIRMED_I_AM,
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LocalIAmHandler);
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// set the handler for all the services we don't implement
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// It is required to send the proper reject message...
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apdu_set_unrecognized_service_handler_handler(
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UnrecognizedServiceHandler);
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// Set the handlers for any confirmed services that we support.
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// We must implement read property - it's required!
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_READ_PROPERTY,
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ReadPropertyHandler);
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_WRITE_PROPERTY,
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WritePropertyHandler);
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apdu_set_confirmed_handler(
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SERVICE_CONFIRMED_ATOMIC_READ_FILE,
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AtomicReadFileHandler);
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// handle the data coming back from confirmed requests
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apdu_set_confirmed_ack_handler(
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SERVICE_CONFIRMED_READ_PROPERTY,
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ReadPropertyAckHandler);
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apdu_set_confirmed_ack_handler(
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SERVICE_CONFIRMED_ATOMIC_READ_FILE,
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AtomicReadFileAckHandler);
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}
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static void print_address_cache(void)
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{
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unsigned i,j;
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BACNET_ADDRESS address;
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uint32_t device_id = 0;
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unsigned max_apdu = 0;
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fprintf(stderr,"Device\tMAC\tMaxAPDU\tNet\n");
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for (i = 0; i < MAX_ADDRESS_CACHE; i++)
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{
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if (address_get_by_index(i,&device_id, &max_apdu, &address))
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{
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fprintf(stderr,"%u\t",device_id);
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for (j = 0; j < address.mac_len; j++)
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{
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fprintf(stderr,"%02X",address.mac[j]);
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}
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fprintf(stderr,"\t");
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fprintf(stderr,"%hu\t",max_apdu);
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fprintf(stderr,"%hu\n",address.net);
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}
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}
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}
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static void print_tsm_stats(void)
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{
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int idle = 0;
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int total = 0;
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idle = tsm_transaction_idle_count();
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total = MAX_TSM_TRANSACTIONS;
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fprintf(stderr,"TSM: %d idle of %d transactions\n",idle,total);
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}
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static void sig_handler(int signo)
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{
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datalink_cleanup();
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print_address_cache();
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print_tsm_stats();
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exit(0);
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}
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int main(int argc, char *argv[])
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{
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BACNET_ADDRESS src = {0}; // address where message came from
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uint16_t pdu_len = 0;
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unsigned timeout = 100; // milliseconds
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unsigned count = 0; // milliseconds
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time_t start_time;
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time_t new_time = 0;
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start_time = time(NULL); /* get current time */
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// Linux specials
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signal(SIGINT, sig_handler);
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signal(SIGHUP, sig_handler);
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signal(SIGTERM, sig_handler);
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// setup this BACnet Server device
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Device_Set_Object_Instance_Number(111);
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Init_Service_Handlers();
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#ifdef BACDL_ETHERNET
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// init the physical layer
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if (!ethernet_init("eth0"))
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return 1;
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#endif
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#ifdef BACDL_BIP
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bip_set_interface("eth0");
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bip_set_port(0xBAC0);
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if (!bip_init())
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return 1;
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#endif
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#ifdef BACDL_ARCNET
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if (!arcnet_init("arc0"))
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return 1;
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#endif
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// loop forever
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for (;;)
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{
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// input
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new_time = time(NULL);
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// returns 0 bytes on timeout
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pdu_len = datalink_receive(
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&src,
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&Rx_Buf[0],
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MAX_MPDU,
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timeout);
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// process
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if (pdu_len)
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{
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npdu_handler(
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&src,
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&Rx_Buf[0],
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pdu_len);
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}
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if (new_time > start_time)
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{
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tsm_timer_milliseconds(new_time - start_time * 1000);
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start_time = new_time;
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}
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if (I_Am_Request)
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{
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I_Am_Request = false;
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Send_IAm();
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} else if (Who_Is_Request)
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{
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Who_Is_Request = false;
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Send_WhoIs();
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}
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// output
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// some round robin task switching
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count++;
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switch (count)
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{
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case 1:
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// used for testing, but kind of noisy on the network
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Read_Properties();
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break;
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case 2:
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break;
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default:
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count = 0;
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break;
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}
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// blink LEDs, Turn on or off outputs, etc
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}
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return 0;
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}
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