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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4618 7fd9a85b-ad96-42d3-883c-3090e2eb8679sbg
patacongo
13 years ago
5 changed files with 235 additions and 23 deletions
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/************************************************************************************
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* configs/stm3240g-eval/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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* |
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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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