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Added TimeSynchronization server example.

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This commit is contained in:
skarg
2016-07-26 21:27:34 +00:00
parent aaf9227a0d
commit 03de7f191e
7 changed files with 488 additions and 18 deletions
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bacnet-stack/demo/handler/h_ts.c
+203 -9
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@@ -26,14 +26,28 @@
#include <stdint.h>
#include <stdio.h>
#include "config.h"
#include "txbuf.h"
#include "device.h"
#include "datetime.h"
#include "bacdef.h"
#include "bacdcode.h"
#include "timesync.h"
#include "handlers.h"
#include "client.h"
#include "bacaddr.h"
/** @file h_ts.c Handles TimeSync requests. */
#if defined(BACNET_TIME_MASTER)
/* sending time sync to recipients */
#ifndef MAX_TIME_SYNC_RECIPIENTS
#define MAX_TIME_SYNC_RECIPIENTS 16
#endif
BACNET_RECIPIENT_LIST Time_Sync_Recipients[MAX_TIME_SYNC_RECIPIENTS];
/* variable used for controlling when to
automatically send a TimeSynchronization request */
static BACNET_DATE_TIME Next_Sync_Time;
#endif
#if PRINT_ENABLED
static void show_bacnet_date_time(
BACNET_DATE * bdate,
@@ -58,8 +72,8 @@ void handler_timesync(
BACNET_ADDRESS * src)
{
int len = 0;
BACNET_DATE bdate;
BACNET_TIME btime;
BACNET_DATE bdate = {0};
BACNET_TIME btime = {0};
(void) src;
(void) service_len;
@@ -67,12 +81,16 @@ void handler_timesync(
timesync_decode_service_request(service_request, service_len, &bdate,
&btime);
if (len > 0) {
if (datetime_is_valid(&bdate, &btime)) {
/* fixme: only set the time if off by some amount */
#if PRINT_ENABLED
fprintf(stderr, "Received TimeSyncronization Request\r\n");
show_bacnet_date_time(&bdate, &btime);
fprintf(stderr, "Received TimeSyncronization Request\r\n");
show_bacnet_date_time(&bdate, &btime);
#else
/* FIXME: set the time? */
/* FIXME: set the time?
Maybe only set the time if off by some amount */
#endif
}
}
return;
@@ -93,12 +111,188 @@ void handler_timesync_utc(
timesync_decode_service_request(service_request, service_len, &bdate,
&btime);
if (len > 0) {
if (datetime_is_valid(&bdate, &btime)) {
#if PRINT_ENABLED
fprintf(stderr, "Received TimeSyncronization Request\r\n");
show_bacnet_date_time(&bdate, &btime);
fprintf(stderr, "Received TimeSyncronization Request\r\n");
show_bacnet_date_time(&bdate, &btime);
#endif
/* FIXME: set the time? */
/* FIXME: set the time?
only set the time if off by some amount */
}
}
return;
}
#if defined(BACNET_TIME_MASTER)
/** Handle a request to list all the timesync recipients.
*
* Invoked by a request to read the Device object's
* PROP_TIME_SYNCHRONIZATION_RECIPIENTS.
* Loops through the list of timesync recipients, and, for each valid one,
* adds its data to the APDU.
*
* @param apdu [out] Buffer in which the APDU contents are built.
* @param max_apdu [in] Max length of the APDU buffer.
*
* @return How many bytes were encoded in the buffer, or
* BACNET_STATUS_ABORT if the response would not fit within the buffer.
*/
int handler_timesync_encode_recipients(
uint8_t * apdu,
int max_apdu)
{
return timesync_encode_timesync_recipients(apdu, max_apdu,
&Time_Sync_Recipients[0]);
}
#endif
#if defined(BACNET_TIME_MASTER)
bool handler_timesync_recipient_write(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false;
/* fixme: handle writing of the recipient list */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
return status;
}
#endif
#if defined(BACNET_TIME_MASTER)
static void handler_timesync_send(
BACNET_DATE_TIME * current_date_time)
{
unsigned index = 0;
bool status = false;
for (index = 0; index < MAX_TIME_SYNC_RECIPIENTS; index++) {
if (Time_Sync_Recipients[index].tag == 1) {
if (status) {
Send_TimeSync_Remote(
&Time_Sync_Recipients[index].type.address,
&current_date_time->date,
&current_date_time->time);
}
}
}
}
#endif
#if defined(BACNET_TIME_MASTER)
static void handler_timesync_update(
uint32_t device_interval,
BACNET_DATE_TIME * current_date_time)
{
uint32_t current_minutes = 0;
uint32_t next_minutes = 0;
uint32_t delta_minutes = 0;
uint32_t offset_minutes = 0;
uint32_t interval = 0;
uint32_t interval_offset = 0;
datetime_copy(&Next_Sync_Time, current_date_time);
if (Device_Align_Intervals()) {
interval_offset = Device_Interval_Offset();
/* If periodic time synchronization is enabled and
the time synchronization interval is a factor of
(divides without remainder) an hour or day, then
the beginning of the period specified for time
synchronization shall be aligned to the hour or
day, respectively. */
if ((60 % device_interval) == 0) {
/* factor of an hour alignment */
/* Interval_Minutes = 1 2 3 4 5 6 10 12 15 20 30 60 */
/* determine next interval */
current_minutes = Next_Sync_Time.time.min;
interval = current_minutes/device_interval;
interval++;
next_minutes = interval * device_interval;
offset_minutes = interval_offset % device_interval;
next_minutes += offset_minutes;
delta_minutes = next_minutes - current_minutes;
datetime_add_minutes(&Next_Sync_Time, delta_minutes);
Next_Sync_Time.time.sec = 0;
Next_Sync_Time.time.hundredths = 0;
} else if ((1440 % device_interval) == 0) {
/* factor of a day alignment */
/* Interval_Minutes = 1 2 3 4 5 6 8 9 10 12 15 16
18 20 24 30 32 36 40 45 48 60 72 80 90 96 120
144 160 180 240 288 360 480 720 1440 */
current_minutes =
datetime_minutes_since_midnight(&Next_Sync_Time.time);
interval = current_minutes/device_interval;
interval++;
next_minutes = interval * device_interval;
offset_minutes = interval_offset % device_interval;
next_minutes += offset_minutes;
delta_minutes = next_minutes - current_minutes;
datetime_add_minutes(&Next_Sync_Time, delta_minutes);
Next_Sync_Time.time.sec = 0;
Next_Sync_Time.time.hundredths = 0;
}
} else {
datetime_add_minutes(&Next_Sync_Time, device_interval);
Next_Sync_Time.time.sec = 0;
Next_Sync_Time.time.hundredths = 0;
}
}
#endif
#if defined(BACNET_TIME_MASTER)
bool handler_timesync_recipient_address_set(
unsigned index,
BACNET_ADDRESS *address)
{
bool status = false;
if (address && (index < MAX_TIME_SYNC_RECIPIENTS)) {
Time_Sync_Recipients[index].tag = 1;
bacnet_address_copy(
&Time_Sync_Recipients[index].type.address,
address);
status = true;
}
return status;
}
#endif
#if defined(BACNET_TIME_MASTER)
void handler_timesync_task(
BACNET_DATE_TIME * current_date_time)
{
int compare = 0;
uint32_t device_interval = 0;
device_interval = Device_Time_Sync_Interval();
if (device_interval) {
compare = datetime_compare(current_date_time, &Next_Sync_Time);
/* if the date/times are the same, return is 0
if date1 is before date2, returns negative
if date1 is after date2, returns positive */
if (compare >= 0) {
handler_timesync_update(device_interval, current_date_time);
handler_timesync_send(current_date_time);
}
}
}
#endif
#if defined(BACNET_TIME_MASTER)
void handler_timesync_init(void)
{
unsigned i = 0;
/* connect linked list */
for (; i < (MAX_TIME_SYNC_RECIPIENTS-1); i++) {
Time_Sync_Recipients[i].next = &Time_Sync_Recipients[i+1];
Time_Sync_Recipients[i+1].next = NULL;
}
for (i = 0; i < MAX_TIME_SYNC_RECIPIENTS; i++) {
Time_Sync_Recipients[i].tag = 0xFF;
}
}
#endif