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February 18, 2025 20:18
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Minimal BACnet Server Attempt
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| #include <stddef.h> | |
| #include <stdint.h> | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <string.h> | |
| /* BACnet Stack includes */ | |
| #include "bacnet/bacdef.h" | |
| #include "bacnet/apdu.h" | |
| #include "bacnet/bacdcode.h" | |
| #include "bacnet/bactext.h" | |
| #include "bacnet/dcc.h" | |
| #include "bacnet/getevent.h" | |
| #include "bacnet/iam.h" | |
| #include "bacnet/npdu.h" | |
| #include "bacnet/version.h" | |
| #include "bacnet/datalink/datalink.h" | |
| #include "bacnet/datalink/dlenv.h" | |
| #include "bacnet/basic/binding/address.h" | |
| #include "bacnet/basic/object/device.h" | |
| #include "bacnet/basic/object/ai.h" | |
| #include "bacnet/basic/object/bv.h" | |
| #include "bacnet/bacstr.h" | |
| #include "bacnet/basic/services.h" | |
| #include "bacnet/basic/service/h_whois.h" | |
| #include "bacnet/basic/service/h_rp.h" | |
| #include "bacnet/basic/service/h_wp.h" | |
| #include "bacnet/basic/service/h_apdu.h" | |
| #include "bacnet/basic/service/s_iam.h" | |
| /* Buffers */ | |
| static uint8_t Rx_Buf[MAX_MPDU] = {0}; | |
| /** | |
| * @brief Initializes the BACnet objects (AI-0 and BV-0). | |
| */ | |
| static void Init_Service_Handlers(void) | |
| { | |
| BACNET_CHARACTER_STRING ai_name, bv_name; | |
| /* Initialize device and objects */ | |
| Device_Init(NULL); | |
| Analog_Input_Init(); | |
| Binary_Value_Init(); | |
| /* Create Analog Input 0 */ | |
| Analog_Input_Create(0); | |
| Analog_Input_Present_Value_Set(0, 25.5); | |
| characterstring_init_ansi(&ai_name, "Room Temperature"); | |
| Analog_Input_Object_Name(0, &ai_name); | |
| printf("Created Analog Input AI-0: Room Temperature\n"); | |
| /* Create Binary Value 0 */ | |
| Binary_Value_Create(0); | |
| Binary_Value_Present_Value_Set(0, 0); | |
| characterstring_init_ansi(&bv_name, "Fan Control Relay"); | |
| Binary_Value_Object_Name(0, &bv_name); | |
| printf("Created Binary Value BV-0: Fan Control Relay\n"); | |
| printf("Testing 123 \n"); | |
| /* Configure required BACnet service handlers */ | |
| apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is); | |
| apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property); | |
| apdu_set_confirmed_handler(SERVICE_CONFIRMED_WRITE_PROPERTY, handler_write_property); | |
| } | |
| /** | |
| * @brief Main entry point for the BACnet server. | |
| */ | |
| int main() | |
| { | |
| BACNET_ADDRESS src = {0}; /* Source address */ | |
| uint16_t pdu_len = 0; | |
| unsigned timeout = 1000; /* 1 second */ | |
| printf("Starting Minimal BACnet Server...\n"); | |
| /* Initialize BACnet stack */ | |
| dlenv_init(); | |
| Init_Service_Handlers(); | |
| atexit(datalink_cleanup); | |
| /* Announce device */ | |
| Send_I_Am(&Rx_Buf[0]); | |
| /* Main loop */ | |
| for (;;) | |
| { | |
| pdu_len = datalink_receive(&src, &Rx_Buf[0], MAX_MPDU, timeout); | |
| if (pdu_len) | |
| { | |
| npdu_handler(&src, &Rx_Buf[0], pdu_len); | |
| } | |
| } | |
| return 0; | |
| } | |
Priority arr not working but there is a server app with 2 AVs one writeable and one BV.
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* BACnet Stack includes */
#include "bacnet/bacdef.h"
#include "bacnet/apdu.h"
#include "bacnet/bacdcode.h"
#include "bacnet/bactext.h"
#include "bacnet/dcc.h"
#include "bacnet/getevent.h"
#include "bacnet/iam.h"
#include "bacnet/npdu.h"
#include "bacnet/version.h"
#include "bacnet/datalink/datalink.h"
#include "bacnet/datalink/dlenv.h"
#include "bacnet/basic/binding/address.h"
#include "bacnet/basic/object/device.h"
#include "bacnet/basic/object/ai.h"
#include "bacnet/basic/object/av.h"
#include "bacnet/basic/object/bv.h"
#include "bacnet/basic/services.h"
#include "bacnet/basic/service/h_whois.h"
#include "bacnet/basic/service/h_rp.h"
#include "bacnet/basic/service/h_wp.h"
#include "bacnet/basic/service/h_apdu.h"
#include "bacnet/basic/service/s_iam.h"
/* Buffers */
static uint8_t Rx_Buf[MAX_MPDU] = {0};
/* Custom Object Table */
static object_functions_t My_Object_Table[] = {
{ OBJECT_DEVICE, NULL /* Init - don't init Device or it will recurse! */,
Device_Count, Device_Index_To_Instance,
Device_Valid_Object_Instance_Number, Device_Object_Name,
Device_Read_Property_Local, Device_Write_Property_Local,
Device_Property_Lists, DeviceGetRRInfo, NULL /* Iterator */,
NULL /* Value_Lists */, NULL /* COV */, NULL /* COV Clear */,
NULL /* Intrinsic Reporting */, NULL /* Add_List_Element */,
NULL /* Remove_List_Element */, NULL /* Create */, NULL /* Delete */,
NULL /* Timer */ },
{ OBJECT_ANALOG_INPUT, Analog_Input_Init, Analog_Input_Count,
Analog_Input_Index_To_Instance, Analog_Input_Valid_Instance,
Analog_Input_Object_Name, Analog_Input_Read_Property,
Analog_Input_Write_Property, Analog_Input_Property_Lists,
NULL /* ReadRangeInfo */, NULL /* Iterator */,
Analog_Input_Encode_Value_List, Analog_Input_Change_Of_Value,
Analog_Input_Change_Of_Value_Clear, Analog_Input_Intrinsic_Reporting,
NULL /* Add_List_Element */, NULL /* Remove_List_Element */,
Analog_Input_Create, Analog_Input_Delete, NULL /* Timer */ },
{ OBJECT_ANALOG_VALUE, Analog_Value_Init, Analog_Value_Count,
Analog_Value_Index_To_Instance, Analog_Value_Valid_Instance,
Analog_Value_Object_Name, Analog_Value_Read_Property,
Analog_Value_Write_Property, Analog_Value_Property_Lists,
NULL /* ReadRangeInfo */, NULL /* Iterator */,
Analog_Value_Encode_Value_List, NULL /* COV */, NULL /* COV Clear */,
NULL /* Intrinsic Reporting */, NULL /* Add_List_Element */,
NULL /* Remove_List_Element */, Analog_Value_Create, Analog_Value_Delete, NULL /* Timer */ },
{ OBJECT_BINARY_VALUE, Binary_Value_Init, Binary_Value_Count,
Binary_Value_Index_To_Instance, Binary_Value_Valid_Instance,
Binary_Value_Object_Name, Binary_Value_Read_Property,
Binary_Value_Write_Property, Binary_Value_Property_Lists,
NULL /* ReadRangeInfo */, NULL /* Iterator */,
Binary_Value_Encode_Value_List, Binary_Value_Change_Of_Value,
Binary_Value_Change_Of_Value_Clear, NULL /* Intrinsic Reporting */,
NULL /* Add_List_Element */, NULL /* Remove_List_Element */,
Binary_Value_Create, Binary_Value_Delete, NULL /* Timer */ },
{ MAX_BACNET_OBJECT_TYPE, NULL /* End of list marker */ }
};
/**
* @brief Initializes the BACnet objects (AI-0, AV-0, and BV-0).
*/
static void Init_Service_Handlers(void)
{
BACNET_CHARACTER_STRING ai_name, av_name, bv_name;
/* Initialize device and objects */
Device_Init(My_Object_Table);
/* Create Analog Input 0 (Read-Only) */
uint32_t room_temp_obj_instance = Analog_Input_Create(0);
Analog_Input_Name_Set(room_temp_obj_instance, "Room Temperature");
Analog_Input_Units_Set(room_temp_obj_instance, UNITS_DEGREES_CELSIUS);
Analog_Input_Present_Value_Set(room_temp_obj_instance, 24.2f);
printf("Created Analog Input AI-0: Room Temperature\n");
/* Create Analog Value 0 (Commandable Setpoint) */
uint32_t setpoint_obj_instance = Analog_Value_Create(0);
Analog_Value_Name_Set(setpoint_obj_instance, "Commandable Setpoint");
Analog_Value_Units_Set(setpoint_obj_instance, UNITS_DEGREES_CELSIUS);
Analog_Value_Present_Value_Set(setpoint_obj_instance, 22.5, 8); // Priority 8
printf("Created Analog Value AV-0: Commandable Setpoint\n");
/* Create Binary Value 0 (Fan Control Relay) */
uint32_t fan_control_obj_instance = Binary_Value_Create(0);
Binary_Value_Name_Set(fan_control_obj_instance, "Fan Control Relay");
printf("Created Binary Value BV-0: Fan Control Relay\n");
/* Configure required BACnet service handlers */
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is);
apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property);
apdu_set_confirmed_handler(SERVICE_CONFIRMED_WRITE_PROPERTY, handler_write_property);
apdu_set_unrecognized_service_handler_handler(handler_unrecognized_service);
}
/**
* @brief Main entry point for the BACnet server.
*/
int main()
{
BACNET_ADDRESS src = {0}; /* Source address */
uint16_t pdu_len = 0;
unsigned timeout = 1000; /* 1 second */
printf("Starting Minimal BACnet Server...\n");
/* Initialize BACnet stack */
dlenv_init();
Init_Service_Handlers();
atexit(datalink_cleanup);
/* Announce device */
Send_I_Am(&Rx_Buf[0]);
/* Main loop */
for (;;)
{
pdu_len = datalink_receive(&src, &Rx_Buf[0], MAX_MPDU, timeout);
if (pdu_len)
{
npdu_handler(&src, &Rx_Buf[0], pdu_len);
}
}
return 0;
}
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Okay so this works... I recompiled with your fork.
Is it possible @nazaryev-cool to reiterate once more on commandable points in the bacnet-stack? I know BV being commandable is a custom feature of your fork ... If you had the time could you bullet point out some steps wheater its an AO, AV, BV, BO one creating an additional point and making it writeable/commandable? Thank you so much for just getting me here : )