5
Last change
on this file since 6302c61 was
8fbe2e6,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/14 at 13:59:49
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Use correct prototype of benchmark_timer_read()
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.
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-
Property mode set to
100644
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File size:
1.2 KB
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1 | /** |
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2 | * @file benchmark_timer.c |
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3 | * |
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4 | * @ingroup tms570 |
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5 | * |
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6 | * @brief clock functions definitions. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2014 Pavel Pisa <pisa@cmp.felk.cvut.cz> |
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11 | * |
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12 | * Czech Technical University in Prague |
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13 | * Zikova 1903/4 |
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14 | * 166 36 Praha 6 |
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15 | * Czech Republic |
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16 | * |
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17 | * Based on LPC24xx and LPC1768 BSP |
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18 | * by embedded brains GmbH and others |
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19 | * |
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20 | * The license and distribution terms for this file may be |
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21 | * found in the file LICENSE in this distribution or at |
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22 | * http://www.rtems.org/license/LICENSE. |
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23 | */ |
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24 | |
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25 | #include <stdlib.h> |
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26 | |
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27 | #include <rtems.h> |
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28 | #include <bsp.h> |
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29 | #include <bsp/system-clocks.h> |
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30 | #include <rtems/btimer.h> |
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31 | |
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32 | bool benchmark_timer_find_average_overhead = false; |
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33 | |
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34 | static uint32_t benchmark_timer_base; |
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35 | |
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36 | void benchmark_timer_initialize(void) |
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37 | { |
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38 | benchmark_timer_base = _CPU_Counter_read(); |
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39 | } |
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40 | |
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41 | benchmark_timer_t benchmark_timer_read(void) |
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42 | { |
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43 | uint32_t delta = _CPU_Counter_read() - benchmark_timer_base; |
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44 | |
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45 | if (benchmark_timer_find_average_overhead) { |
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46 | return delta; |
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47 | } else { |
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48 | /* TODO check on hardware */ |
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49 | if (delta > 74) { |
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50 | return delta - 74; |
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51 | } else { |
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52 | return 0; |
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53 | } |
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54 | } |
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55 | } |
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56 | |
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57 | void benchmark_timer_disable_subtracting_average_overhead(bool find_average_overhead ) |
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58 | { |
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59 | benchmark_timer_find_average_overhead = find_average_overhead; |
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60 | } |
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