bc43998595
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5378 42af7a65-404d-4744-a932-0658087f49c3
138 lines
4.9 KiB
C
138 lines
4.9 KiB
C
/************************************************************************************
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* configs/cloudctrl/src/up_watchdog.c
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* arch/arm/src/board/up_watchdog.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Darcy Gong <darcy.gong@gmail.com>
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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 <errno.h>
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#include <debug.h>
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#include <nuttx/watchdog.h>
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#include <arch/board/board.h>
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#include "stm32_wdg.h"
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#ifdef CONFIG_WATCHDOG
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Configuration *******************************************************************/
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/* Wathdog hardware should be enabled */
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#if !defined(CONFIG_STM32_WWDG) && !defined(CONFIG_STM32_IWDG)
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# warning "One of CONFIG_STM32_WWDG or CONFIG_STM32_IWDG must be defined"
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#endif
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/* Select the path to the registered watchdog timer device */
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#ifndef CONFIG_STM32_WDG_DEVPATH
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# ifdef CONFIG_EXAMPLES_WATCHDOG_DEVPATH
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# define CONFIG_STM32_WDG_DEVPATH CONFIG_EXAMPLES_WATCHDOG_DEVPATH
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# else
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# define CONFIG_STM32_WDG_DEVPATH "/dev/watchdog0"
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# endif
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#endif
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/* Use the un-calibrated LSI frequency if we have nothing better */
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#if defined(CONFIG_STM32_IWDG) && !defined(CONFIG_STM32_LSIFREQ)
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# define CONFIG_STM32_LSIFREQ STM32_LSI_FREQUENCY
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#endif
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/* Debug ***************************************************************************/
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/* Non-standard debug that may be enabled just for testing the watchdog timer */
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#ifndef CONFIG_DEBUG
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# undef CONFIG_DEBUG_WATCHDOG
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#endif
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#ifdef CONFIG_DEBUG_WATCHDOG
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# define wdgdbg dbg
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# define wdglldbg lldbg
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# ifdef CONFIG_DEBUG_VERBOSE
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# define wdgvdbg vdbg
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# define wdgllvdbg llvdbg
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# else
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# define wdgvdbg(x...)
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# define wdgllvdbg(x...)
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# endif
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#else
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# define wdgdbg(x...)
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# define wdglldbg(x...)
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# define wdgvdbg(x...)
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# define wdgllvdbg(x...)
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#endif
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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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* Name: up_wdginitialize()
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*
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* Description:
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* Perform architecuture-specific initialization of the Watchdog hardware.
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* This interface must be provided by all configurations using
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* apps/examples/watchdog
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*
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****************************************************************************/
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int up_wdginitialize(void)
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{
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/* Initialize tha register the watchdog timer device */
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#if defined(CONFIG_STM32_WWDG)
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stm32_wwdginitialize(CONFIG_STM32_WDG_DEVPATH);
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return OK;
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#elif defined(CONFIG_STM32_IWDG)
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stm32_iwdginitialize(CONFIG_STM32_WDG_DEVPATH, CONFIG_STM32_LSIFREQ);
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return OK;
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#else
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return -ENODEV;
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#endif
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}
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#endif /* CONFIG_WATCHDOG */
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