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42 lines
890 B
C
42 lines
890 B
C
/*
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* Timer Init
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*
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* Use the last DMA timer (DTIM3) as the diagnostic timer.
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*/
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/*
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* Copyright (c) 2005 Eric Norum <eric@norum.ca>
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*
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* COPYRIGHT (c) 2005-2010.
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* On-Line Applications Research Corporation (OAR).
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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 <rtems.h>
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#include <rtems/btimer.h>
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#include <bsp.h>
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void benchmark_timer_initialize(void)
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{
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uint32_t preScaleDivisor = bsp_get_CPU_clock_speed() / 1000000;
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MCF_DTIM3_DTMR = 0;
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MCF_DTIM3_DTMR = MCF_DTIM_DTMR_PS(preScaleDivisor - 1) |
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MCF_DTIM_DTMR_CLK_DIV1 | MCF_DTIM_DTMR_RST;
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}
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/*
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* Return timer value in microsecond units
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*/
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benchmark_timer_t benchmark_timer_read(void)
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{
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return MCF_DTIM3_DTCN;
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}
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void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
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{
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}
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