counter.h

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/*
 * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  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.
 */

#ifndef _RTEMS_SAPI_COUNTER_H
#define _RTEMS_SAPI_COUNTER_H

#include <rtems/score/cpu.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef CPU_Counter_ticks rtems_counter_ticks;

static inline rtems_counter_ticks rtems_counter_read( void )
{
  return _CPU_Counter_read();
}

static inline rtems_counter_ticks rtems_counter_difference(
  rtems_counter_ticks second,
  rtems_counter_ticks first
)
{
  return _CPU_Counter_difference( second, first );
}

uint64_t rtems_counter_ticks_to_nanoseconds(
  rtems_counter_ticks ticks
);

rtems_counter_ticks rtems_counter_nanoseconds_to_ticks(
  uint32_t nanoseconds
);

void rtems_counter_initialize_converter( uint32_t frequency );

void rtems_counter_delay_ticks( rtems_counter_ticks ticks );

void rtems_counter_delay_nanoseconds( uint32_t nanoseconds );

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* _RTEMS_SAPI_COUNTER_H */