Files
bacnet_stack/bacnet-stack/demo/epics/main.c
T
2009-10-24 17:02:59 +00:00

426 lines
14 KiB
C

/**************************************************************************
*
* 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.
*
*********************************************************************/
/* command line tool that sends a BACnet service, and displays the reply */
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h> /* for time */
#include <errno.h>
#include "bactext.h"
#include "iam.h"
#include "arf.h"
#include "tsm.h"
#include "address.h"
#include "config.h"
#include "bacdef.h"
#include "npdu.h"
#include "apdu.h"
#include "device.h"
#include "net.h"
#include "datalink.h"
#include "whois.h"
#include "rp.h"
/* some demo stuff needed */
#include "filename.h"
#include "handlers.h"
#include "client.h"
#include "txbuf.h"
#include "dlenv.h"
#include "keylist.h"
/* buffer used for receive */
static uint8_t Rx_Buf[MAX_MPDU] = { 0 };
/* target information converted from command line */
static uint32_t Target_Device_Object_Instance = BACNET_MAX_INSTANCE;
static BACNET_ADDRESS Target_Address;
/* any errors are picked up in main loop */
static bool Error_Detected = false;
/* any valid data returned is put here */
typedef struct BACnet_RP_Service_Data_t {
bool new_data;
BACNET_CONFIRMED_SERVICE_ACK_DATA service_data;
BACNET_READ_PROPERTY_DATA data;
} BACNET_RP_SERVICE_DATA;
static BACNET_RP_SERVICE_DATA Read_Property_Data;
/* We get the length of the object list,
and then get the objects one at a time */
static uint32_t Object_List_Length = 0;
static uint32_t Object_List_Index = 0;
/* object that we are currently printing */
static OS_Keylist Object_List;
static BACNET_OBJECT_ID Object_List_Element;
#if !defined(PRINT_ERRORS)
#define PRINT_ERRORS 1
#endif
/* FIXME: keep the object list in here */
/* static OS_Keylist Object_List; */
static void MyErrorHandler(
BACNET_ADDRESS * src,
uint8_t invoke_id,
BACNET_ERROR_CLASS error_class,
BACNET_ERROR_CODE error_code)
{
/* FIXME: verify src and invoke id */
(void) src;
(void) invoke_id;
#if PRINT_ERRORS
printf("BACnet Error: %s: %s\r\n", bactext_error_class_name(error_class),
bactext_error_code_name(error_code));
#else
(void) error_class;
(void) error_code;
#endif
Error_Detected = true;
}
void MyAbortHandler(
BACNET_ADDRESS * src,
uint8_t invoke_id,
uint8_t abort_reason,
bool server)
{
/* FIXME: verify src and invoke id */
(void) src;
(void) invoke_id;
(void) server;
#if PRINT_ERRORS
printf("BACnet Abort: %s\r\n", bactext_abort_reason_name(abort_reason));
#else
(void) abort_reason;
#endif
Error_Detected = true;
}
void MyRejectHandler(
BACNET_ADDRESS * src,
uint8_t invoke_id,
uint8_t reject_reason)
{
/* FIXME: verify src and invoke id */
(void) src;
(void) invoke_id;
#if PRINT_ERRORS
printf("BACnet Reject: %s\r\n", bactext_reject_reason_name(reject_reason));
#else
(void) reject_reason;
#endif
Error_Detected = true;
}
void PrintReadPropertyData(
BACNET_READ_PROPERTY_DATA * data)
{
BACNET_APPLICATION_DATA_VALUE value; /* for decode value data */
int len = 0;
uint8_t *application_data;
int application_data_len;
bool first_value = true;
bool print_brace = false;
KEY object_list_element;
if (data) {
#if 0
if (data->array_index == BACNET_ARRAY_ALL)
fprintf(stderr, "%s #%u %s\n",
bactext_object_type_name(data->object_type),
data->object_instance,
bactext_property_name(data->object_property));
else
fprintf(stderr, "%s #%u %s[%d]\n",
bactext_object_type_name(data->object_type),
data->object_instance,
bactext_property_name(data->object_property),
data->array_index);
#endif
application_data = data->application_data;
application_data_len = data->application_data_len;
/* value? loop until all of the len is gone... */
for (;;) {
len =
bacapp_decode_application_data(application_data,
(uint8_t) application_data_len, &value);
if (first_value && (len < application_data_len)) {
first_value = false;
fprintf(stdout, "{");
print_brace = true;
}
/* Grab the value of the Device Object List length - don't print it! */
if (data->object_property == PROP_OBJECT_LIST) {
if ((data->array_index == 0) &&
(value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT)) {
Object_List_Length = value.type.Unsigned_Int;
fprintf(stdout, "{");
} else {
if (value.tag == BACNET_APPLICATION_TAG_OBJECT_ID) {
/* FIXME: store the object list so we can interrogate
each object. */
object_list_element =
KEY_ENCODE(value.type.Object_Id.type,
value.type.Object_Id.instance);
}
bacapp_print_value(stdout, &value, data->object_property);
if (Object_List_Index <= Object_List_Length) {
fprintf(stdout, ",");
if (!(Object_List_Index % 4)) {
fprintf(stdout, "\r\n ");
}
} else {
fprintf(stdout, "}");
fprintf(stdout, "\r\n");
}
}
} else {
bacapp_print_value(stdout, &value, data->object_property);
}
if (len) {
if (len < application_data_len) {
application_data += len;
application_data_len -= len;
/* there's more! */
fprintf(stdout, ",");
} else
break;
} else
break;
}
if (print_brace)
fprintf(stdout, "}");
if (data->object_property != PROP_OBJECT_LIST) {
fprintf(stdout, "\r\n");
}
}
}
void MyReadPropertyAckHandler(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_ACK_DATA * service_data)
{
int len = 0;
BACNET_READ_PROPERTY_DATA data;
(void) src;
len = rp_ack_decode_service_request(service_request, service_len, &data);
if (len > 0) {
memmove(&Read_Property_Data.service_data, service_data, sizeof(data));
memmove(&Read_Property_Data.data, &data, sizeof(data));
Read_Property_Data.new_data = true;
}
}
static void Init_Service_Handlers(
void)
{
Device_Init();
handler_read_property_object_set(OBJECT_DEVICE,
Device_Encode_Property_APDU, Device_Valid_Object_Instance_Number);
/* we need to handle who-is
to support dynamic device binding to us */
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is);
/* handle i-am to support binding to other devices */
apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_I_AM, handler_i_am_bind);
/* set the handler for all the services we don't implement
It is required to send the proper reject message... */
apdu_set_unrecognized_service_handler_handler
(handler_unrecognized_service);
/* we must implement read property - it's required! */
apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY,
handler_read_property);
/* handle the data coming back from confirmed requests */
apdu_set_confirmed_ack_handler(SERVICE_CONFIRMED_READ_PROPERTY,
MyReadPropertyAckHandler);
/* handle any errors coming back */
apdu_set_error_handler(SERVICE_CONFIRMED_READ_PROPERTY, MyErrorHandler);
apdu_set_abort_handler(MyAbortHandler);
apdu_set_reject_handler(MyRejectHandler);
}
static uint8_t Read_Properties(
uint32_t device_instance)
{
uint8_t invoke_id = 0;
static unsigned index = 0;
/* note: you could just loop through
all the properties in all the objects. */
static const int *pRequired = NULL;
if (!pRequired) {
Device_Property_Lists(&pRequired, NULL, NULL);
}
if (pRequired[index] != -1) {
if (pRequired[index] == PROP_OBJECT_LIST) {
if (Object_List_Length == 0) {
printf(" %s: ", bactext_property_name(pRequired[index]));
invoke_id =
Send_Read_Property_Request(device_instance, OBJECT_DEVICE,
device_instance, PROP_OBJECT_LIST, 0);
if (invoke_id) {
Object_List_Index = 1;
}
} else {
invoke_id =
Send_Read_Property_Request(device_instance, OBJECT_DEVICE,
device_instance, PROP_OBJECT_LIST, Object_List_Index);
if (invoke_id) {
Object_List_Index++;
if (Object_List_Index > Object_List_Length) {
/* go on to next property */
index++;
}
}
}
} else {
printf(" %s: ", bactext_property_name(pRequired[index]));
invoke_id =
Send_Read_Property_Request(device_instance, OBJECT_DEVICE,
device_instance, pRequired[index], BACNET_ARRAY_ALL);
if (invoke_id) {
index++;
}
}
}
return invoke_id;
}
int main(
int argc,
char *argv[])
{
BACNET_ADDRESS src = {
0
}; /* address where message came from */
uint16_t pdu_len = 0;
unsigned timeout = 100; /* milliseconds */
unsigned max_apdu = 0;
time_t elapsed_seconds = 0;
time_t last_seconds = 0;
time_t current_seconds = 0;
time_t timeout_seconds = 0;
uint8_t invoke_id = 0;
bool found = false;
/* FIXME: handle multi homed systems - use an argument passed to the datalink_init() */
/* print help if not enough arguments */
if (argc < 2) {
printf("%s device-instance\r\n", filename_remove_path(argv[0]));
return 0;
}
/* decode the command line parameters */
Target_Device_Object_Instance = strtol(argv[1], NULL, 0);
if (Target_Device_Object_Instance > BACNET_MAX_INSTANCE) {
fprintf(stderr, "device-instance=%u - it must be less than %u\r\n",
Target_Device_Object_Instance, BACNET_MAX_INSTANCE + 1);
return 1;
}
/* setup my info */
Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE);
Object_List = Keylist_Create();
address_init();
Init_Service_Handlers();
dlenv_init();
/* configure the timeout values */
last_seconds = time(NULL);
timeout_seconds = (apdu_timeout() / 1000) * apdu_retries();
/* try to bind with the device */
found =
address_bind_request(Target_Device_Object_Instance, &max_apdu,
&Target_Address);
if (!found) {
Send_WhoIs(Target_Device_Object_Instance,
Target_Device_Object_Instance);
}
printf("List of Objects in test device:\r\n");
printf("{\r\n");
/* loop forever */
for (;;) {
/* increment timer - exit if timed out */
current_seconds = time(NULL);
/* returns 0 bytes on timeout */
pdu_len = datalink_receive(&src, &Rx_Buf[0], MAX_MPDU, timeout);
/* process */
if (pdu_len) {
npdu_handler(&src, &Rx_Buf[0], pdu_len);
}
/* at least one second has passed */
if (current_seconds != last_seconds) {
tsm_timer_milliseconds(((current_seconds - last_seconds) * 1000));
}
/* wait until the device is bound, or timeout and quit */
found =
address_bind_request(Target_Device_Object_Instance, &max_apdu,
&Target_Address);
if (found) {
/* invoke ID is set to zero when it is not in use */
if (invoke_id == 0) {
invoke_id = Read_Properties(Target_Device_Object_Instance);
if (invoke_id == 0) {
break;
}
} else if ((Read_Property_Data.new_data) &&
(invoke_id == Read_Property_Data.service_data.invoke_id)) {
Read_Property_Data.new_data = false;
PrintReadPropertyData(&Read_Property_Data.data);
if (tsm_invoke_id_free(invoke_id)) {
invoke_id = 0;
}
} else if (tsm_invoke_id_free(invoke_id)) {
invoke_id = 0;
} else if (tsm_invoke_id_failed(invoke_id)) {
fprintf(stderr, "\rError: TSM Timeout!\r\n");
tsm_free_invoke_id(invoke_id);
invoke_id = 0;
} else if (Error_Detected) {
invoke_id = 0;
}
} else {
/* increment timer - exit if timed out */
elapsed_seconds += (current_seconds - last_seconds);
if (elapsed_seconds > timeout_seconds) {
printf("\rError: APDU Timeout!\r\n");
break;
}
}
/* keep track of time for next check */
last_seconds = current_seconds;
}
printf("}\r\n");
return 0;
}