forked from Imagelibrary/rtems
8fbe2e69b5
This change starts with removing the effectively empty file timerdrv.h. The prototypes for benchmark_timer_XXX() were in btimer.h which was not universally used. Thus every use of timerdrv.h had to be changed to btimer.h. Then the prototypes for benchmark_timer_read() had to be adjusted to return benchmark_timer_t rather than int or uint32_t. I took this opportunity to also correct the file headers to separate the copyright from the file description comments which is needed to ensure the copyright isn't propagated into Doxygen output.
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/**
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* @file benchmark_timer.c
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*
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* @ingroup tms570
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*
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* @brief clock functions definitions.
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*/
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/*
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* Copyright (c) 2014 Pavel Pisa <pisa@cmp.felk.cvut.cz>
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*
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* Czech Technical University in Prague
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* Zikova 1903/4
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* 166 36 Praha 6
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* Czech Republic
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*
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* Based on LPC24xx and LPC1768 BSP
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* by embedded brains GmbH and others
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <stdlib.h>
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#include <rtems.h>
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#include <bsp.h>
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#include <bsp/system-clocks.h>
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#include <rtems/btimer.h>
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bool benchmark_timer_find_average_overhead = false;
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static uint32_t benchmark_timer_base;
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void benchmark_timer_initialize(void)
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{
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benchmark_timer_base = _CPU_Counter_read();
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}
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benchmark_timer_t benchmark_timer_read(void)
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{
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uint32_t delta = _CPU_Counter_read() - benchmark_timer_base;
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if (benchmark_timer_find_average_overhead) {
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return delta;
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} else {
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/* TODO check on hardware */
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if (delta > 74) {
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return delta - 74;
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} else {
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return 0;
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}
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}
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}
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void benchmark_timer_disable_subtracting_average_overhead(bool find_average_overhead )
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{
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benchmark_timer_find_average_overhead = find_average_overhead;
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}
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