forked from Imagelibrary/rtems
40 lines
883 B
C
40 lines
883 B
C
/*
|
|
* Timer Init
|
|
*
|
|
* Use the last DMA timer (DTIM3) as the diagnostic timer.
|
|
*
|
|
* Author: W. Eric Norum <norume@aps.anl.gov>
|
|
*
|
|
* COPYRIGHT (c) 2005.
|
|
* On-Line Applications Research Corporation (OAR).
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rtems.org/license/LICENSE.
|
|
*/
|
|
|
|
#include <rtems.h>
|
|
#include <rtems/btimer.h>
|
|
#include <bsp.h>
|
|
|
|
void benchmark_timer_initialize(void)
|
|
{
|
|
uint32_t preScaleDivisor = bsp_get_CPU_clock_speed() / 1000000;
|
|
|
|
MCF_DTIM3_DTMR = 0;
|
|
MCF_DTIM3_DTMR = MCF_DTIM_DTMR_PS(preScaleDivisor - 1) |
|
|
MCF_DTIM_DTMR_CLK_DIV1 | MCF_DTIM_DTMR_RST;
|
|
}
|
|
|
|
/*
|
|
* Return timer value in microsecond units
|
|
*/
|
|
benchmark_timer_t benchmark_timer_read(void)
|
|
{
|
|
return MCF_DTIM3_DTCN;
|
|
}
|
|
|
|
void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
|
|
{
|
|
}
|