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149 lines
4.9 KiB
149 lines
4.9 KiB
/************************************************************************ |
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* sched/clock_settime.c |
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* |
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* Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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************************************************************************/ |
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/************************************************************************ |
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* Included Files |
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************************************************************************/ |
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#include <nuttx/config.h> |
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#include <nuttx/rtc.h> |
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#include <time.h> |
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#include <assert.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <arch/irq.h> |
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#include "clock_internal.h" |
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/************************************************************************ |
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* Definitions |
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************************************************************************/ |
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/************************************************************************ |
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* Private Type Declarations |
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************************************************************************/ |
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/************************************************************************ |
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* Private Function Prototypes |
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************************************************************************/ |
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/********************************************************************** |
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* Public Constant Data |
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**********************************************************************/ |
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/************************************************************************ |
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* Public Variables |
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************************************************************************/ |
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/********************************************************************** |
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* Private Variables |
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**********************************************************************/ |
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/************************************************************************ |
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* Private Functions |
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************************************************************************/ |
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/************************************************************************ |
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* Public Functions |
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************************************************************************/ |
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/************************************************************************ |
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* Function: clock_settime |
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* |
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* Description: |
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* Clock Functions based on POSIX APIs |
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* |
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************************************************************************/ |
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int clock_settime(clockid_t clock_id, FAR const struct timespec *tp) |
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{ |
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irqstate_t flags; |
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int ret = OK; |
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sdbg("clock_id=%d\n", clock_id); |
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DEBUGASSERT(tp != NULL); |
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/* CLOCK_REALTIME - POSIX demands this to be present. This is the wall |
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* time clock. |
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*/ |
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#ifdef CONFIG_RTC |
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if (clock_id == CLOCK_REALTIME || clock_id == CLOCK_ACTIVETIME) |
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#else |
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if (clock_id == CLOCK_REALTIME) |
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#endif |
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{ |
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/* Interrupts are disabled here so that the in-memory time |
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* representation and the RTC setting will be as close as |
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* possible. |
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*/ |
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flags = irqsave(); |
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/* Save the new base time. */ |
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g_basetime.tv_sec = tp->tv_sec; |
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g_basetime.tv_nsec = tp->tv_nsec; |
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/* Get the elapsed time since power up (in milliseconds) biased |
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* as appropriate. |
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*/ |
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g_tickbias = g_system_timer; |
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/* Setup the RTC (lo- or high-res) */ |
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#ifdef CONFIG_RTC |
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if (g_rtc_enabled && clock_id != CLOCK_ACTIVETIME) |
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{ |
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up_rtc_settime(tp); |
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} |
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#endif |
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irqrestore(flags); |
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sdbg("basetime=(%d,%d) tickbias=%d\n", |
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(int)g_basetime.tv_sec, (int)g_basetime.tv_nsec, |
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(int)g_tickbias); |
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} |
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else |
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{ |
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sdbg("Returning ERROR\n"); |
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set_errno(EINVAL); |
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ret = ERROR; |
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} |
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return ret; |
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}
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