skarg
135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright (C) 2009 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.
|
|
*
|
|
*********************************************************************/
|
|
#include <stdio.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <time.h>
|
|
#include "timer.h"
|
|
|
|
/* counter for the various timers */
|
|
static volatile uint32_t Millisecond_Counter[MAX_MILLISECOND_TIMERS];
|
|
|
|
/* start time for the clock */
|
|
static struct timespec start;
|
|
uint32_t timeGetTime(void)
|
|
{
|
|
struct timespec now;
|
|
uint32_t ticks;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC,&now);
|
|
|
|
ticks = (now.tv_sec-start.tv_sec)*1000+
|
|
(now.tv_nsec-start.tv_nsec)/1000000;
|
|
|
|
return ticks;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: returns the current millisecond count
|
|
* Returns: none
|
|
* Notes: none
|
|
*************************************************************************/
|
|
uint32_t timer_milliseconds(
|
|
unsigned index)
|
|
{
|
|
uint32_t now = timeGetTime();
|
|
uint32_t delta_time = 0;
|
|
|
|
if (index < MAX_MILLISECOND_TIMERS) {
|
|
if (Millisecond_Counter[index] <= now) {
|
|
delta_time = now - Millisecond_Counter[index];
|
|
} else {
|
|
delta_time = (UINT32_MAX - Millisecond_Counter[index]) + now + 1;
|
|
}
|
|
}
|
|
|
|
return delta_time;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: compares the current time count with a value
|
|
* Returns: true if the time has elapsed
|
|
* Notes: none
|
|
*************************************************************************/
|
|
bool timer_elapsed_milliseconds(
|
|
unsigned index,
|
|
uint32_t value)
|
|
{
|
|
return (timer_milliseconds(index) >= value);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: compares the current time count with a value
|
|
* Returns: true if the time has elapsed
|
|
* Notes: none
|
|
*************************************************************************/
|
|
bool timer_elapsed_seconds(
|
|
unsigned index,
|
|
uint32_t seconds)
|
|
{
|
|
return ((timer_milliseconds(index)/1000) >= seconds);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: compares the current time count with a value
|
|
* Returns: true if the time has elapsed
|
|
* Notes: none
|
|
*************************************************************************/
|
|
bool timer_elapsed_minutes(
|
|
unsigned index,
|
|
uint32_t minutes)
|
|
{
|
|
return ((timer_milliseconds(index)/(1000*60)) >= minutes);
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: Sets the timer counter to zero.
|
|
* Returns: none
|
|
* Notes: none
|
|
*************************************************************************/
|
|
uint32_t timer_reset(
|
|
unsigned index)
|
|
{
|
|
uint32_t timer_value = 0;
|
|
|
|
if (index < MAX_MILLISECOND_TIMERS) {
|
|
timer_value = timer_milliseconds(index);
|
|
Millisecond_Counter[index] = timeGetTime();
|
|
}
|
|
|
|
return timer_value;
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: Initialization for timer
|
|
* Returns: none
|
|
* Notes: none
|
|
*************************************************************************/
|
|
void timer_init(
|
|
void)
|
|
{
|
|
clock_gettime(CLOCK_MONOTONIC,&start);
|
|
}
|