Kari Argillander
cb243c36a8
* Change MIT license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change GPL exception license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change misc license texts to SPDX-License-Identifier There are some external code in repo which are not licenses as most of the stuff in this repo. We still want every file to have SPDX identifier to easily grep licenses. * Add currently used license files Even though Bacnet-Stack is using SPDX identifiers we still need to give those license files with source. For this reason add all license files to license/ folder. SPDX has also files which would make same thing but this is style which example Linux kernel is using and it is quite clear so I choose that one for now. I choosed not yet bring CC-PDDC as that is not right license for those files. --------- Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright (C) 2009 Steve Karg <skarg@users.sourceforge.net>
|
|
* Multimedia Timer contribution by Cameron Crothers, 2008
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
*********************************************************************/
|
|
#include <stdio.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <limits.h>
|
|
#include <time.h>
|
|
#include "bacport.h"
|
|
#include "bacnet/basic/sys/mstimer.h"
|
|
|
|
/* Windows timer period - in milliseconds */
|
|
static unsigned long Timer_Period = 1;
|
|
|
|
/**
|
|
* @brief returns the current millisecond count
|
|
* @return millisecond counter
|
|
*/
|
|
unsigned long mstimer_now(void)
|
|
{
|
|
return timeGetTime();
|
|
}
|
|
|
|
/**
|
|
* @brief Shut down for timer
|
|
*/
|
|
static void timer_cleanup(void)
|
|
{
|
|
timeEndPeriod(Timer_Period);
|
|
}
|
|
|
|
/**
|
|
* @brief Initialization for timer
|
|
*/
|
|
void mstimer_init(void)
|
|
{
|
|
TIMECAPS tc;
|
|
|
|
/* set timer resolution */
|
|
if (timeGetDevCaps(&tc, sizeof(TIMECAPS)) != TIMERR_NOERROR) {
|
|
fprintf(stderr, "Failed to get timer resolution parameters\n");
|
|
}
|
|
/* configure for 1ms resolution - if possible */
|
|
Timer_Period = min(max(tc.wPeriodMin, 1L), tc.wPeriodMax);
|
|
if (Timer_Period != 1L) {
|
|
fprintf(stderr,
|
|
"Failed to set timer to 1ms. "
|
|
"Time period set to %ums\n",
|
|
(unsigned)Timer_Period);
|
|
}
|
|
timeBeginPeriod(Timer_Period);
|
|
atexit(timer_cleanup);
|
|
}
|