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/*
* Timer Init
*
* Use the last DMA timer (DTIM3) as the diagnostic timer.
*/
/*
* Copyright (c) 2005 Eric Norum <eric@norum.ca>
*
* COPYRIGHT (c) 2005-2010.
* 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)
{
}
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