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/**
* @file
*
* @ingroup lpc24xx
*
* @brief Benchmark timer support.
*/
/*
* Copyright (c) 2008, 2009
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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 <bsp.h>
#include <rtems/btimer.h>
#include <bsp/system-clocks.h>
bool benchmark_timer_find_average_overhead = false;
static uint32_t benchmark_timer_base;
void benchmark_timer_initialize(void)
{
benchmark_timer_base = lpc24xx_timer();
}
benchmark_timer_t benchmark_timer_read(void)
{
uint32_t delta = lpc24xx_timer() - benchmark_timer_base;
if (benchmark_timer_find_average_overhead) {
return delta;
} else {
/* Value determined by tmck for NCS board */
if (delta > 74) {
return delta - 74;
} else {
return 0;
}
}
}
void benchmark_timer_disable_subtracting_average_overhead(bool find_average_overhead )
{
benchmark_timer_find_average_overhead = find_average_overhead;
}
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