Steve Karg
1e889b633c
* Added Zephyr settings subsys to enable storing of BACnet values according to BACnet object property value path. * Added BACnet Basic features to enable basic samples. Refactored the zephyr BACnet profile B-SS sample to use BACnet basic subsys.
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/**
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* @file
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* @brief The BACnet/IPv4 datalink tasks for handling the device specific
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* data link layer
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* @author Steve Karg <skarg@users.sourceforge.net>
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* @date April 2024
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* @copyright SPDX-License-Identifier: MIT
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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/* BACnet definitions */
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#include "bacnet/bacdef.h"
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/* BACnet library API */
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#include "bacnet/basic/object/netport.h"
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#include "bacnet/basic/bbmd/h_bbmd.h"
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#include "bacnet/datalink/bip.h"
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#include "bacnet/datalink/bvlc.h"
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#include "bacnet/datalink/datalink.h"
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/* me! */
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#include "bacnet_basic/bacnet_port_ipv4.h"
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#if defined(BACDL_BIP)
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/* timer used to renew Foreign Device Registration */
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static uint16_t BBMD_Timer_Seconds;
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static uint16_t BBMD_TTL_Seconds = 60000;
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static BACNET_IP_ADDRESS BBMD_Address;
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/**
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* @brief Initialize the datalink network port
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* @param ttl_seconds [in] The time-to-live in seconds for the Foreign Device Registration
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* @param bbmd_address [in] The address of the BBMD
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*/
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void bacnet_port_ipv4_foreign_device_init(
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const uint16_t ttl_seconds,
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const BACNET_IP_ADDRESS *bbmd_address)
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{
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BBMD_TTL_Seconds = ttl_seconds;
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if (bbmd_address) {
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memcpy(&BBMD_Address, bbmd_address, sizeof(BACNET_IP_ADDRESS));
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}
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}
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/**
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* @brief Renew the Foreign Device Registration
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*/
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void bacnet_port_ipv4_task(uint16_t elapsed_seconds)
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{
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if (BBMD_Timer_Seconds) {
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if (BBMD_Timer_Seconds <= elapsed_seconds) {
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BBMD_Timer_Seconds = 0;
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} else {
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BBMD_Timer_Seconds -= elapsed_seconds;
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}
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if (BBMD_Timer_Seconds == 0) {
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if (BBMD_Address.port > 0) {
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(void)bvlc_register_with_bbmd(&BBMD_Address,
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BBMD_TTL_Seconds);
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}
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BBMD_Timer_Seconds = (uint16_t)BBMD_TTL_Seconds;
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}
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}
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}
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/**
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* Initialize the network port object.
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*/
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bool bacnet_port_ipv4_init(void)
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{
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const uint32_t instance = 1;
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BACNET_IP_ADDRESS addr = { 0 };
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uint8_t prefix = 0;
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if (!bip_init(NULL)) {
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return false;
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}
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Network_Port_Object_Instance_Number_Set(0, instance);
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Network_Port_Name_Set(instance, "BACnet/IP Port");
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Network_Port_Type_Set(instance, PORT_TYPE_BIP);
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bip_get_addr(&addr);
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prefix = bip_get_subnet_prefix();
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Network_Port_BIP_Port_Set(instance, addr.port);
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Network_Port_IP_Address_Set(instance, addr.address[0], addr.address[1],
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addr.address[2], addr.address[3]);
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Network_Port_IP_Subnet_Prefix_Set(instance, prefix);
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Network_Port_Link_Speed_Set(instance, 0.0);
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/* common NP data */
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Network_Port_Reliability_Set(instance, RELIABILITY_NO_FAULT_DETECTED);
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Network_Port_Out_Of_Service_Set(instance, false);
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Network_Port_Quality_Set(instance, PORT_QUALITY_UNKNOWN);
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Network_Port_APDU_Length_Set(instance, MAX_APDU);
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Network_Port_Network_Number_Set(instance, 0);
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/* last thing - clear pending changes - we don't want to set these
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since they are already set */
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Network_Port_Changes_Pending_Set(instance, false);
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return true;
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}
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#endif
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