diff options
Diffstat (limited to 'nuttx/sched/clock_systimer.c')
-rw-r--r-- | nuttx/sched/clock_systimer.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/nuttx/sched/clock_systimer.c b/nuttx/sched/clock_systimer.c new file mode 100644 index 000000000..33c16db94 --- /dev/null +++ b/nuttx/sched/clock_systimer.c @@ -0,0 +1,110 @@ +/**************************************************************************** + * sched/clock_systimer.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> + +#include <nuttx/clock.h> + +#include "clock_internal.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: clock_systimer + * + * Description: + * Return the current value of the 32-bit system timer counter + * + * Parameters: + * None + * + * Return Value: + * The current value of the system timer counter + * + * Assumptions: + * + ****************************************************************************/ + +#if !defined(clock_systimer) /* See nuttx/clock.h */ +uint32_t clock_systimer(void) +{ +#ifdef CONFIG_SYSTEM_TIME64 + return (uint32_t)(g_system_timer & 0x00000000ffffffff); +#else + return g_system_timer; +#endif +} +#endif + +/**************************************************************************** + * Name: clock_systimer64 + * + * Description: + * Return the current value of the 64-bit system timer counter + * + * Parameters: + * None + * + * Return Value: + * The current value of the system timer counter + * + * Assumptions: + * + ****************************************************************************/ + +#if !defined(clock_systimer) /* See nuttx/clock.h */ +#ifdef CONFIG_SYSTEM_TIME64 +uint64_t clock_systimer64(void) +{ + return g_system_timer; +} +#endif +#endif |