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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-04-16 17:20:36 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-04-16 17:20:36 +0000 |
commit | 62fb03e8a5fe25cf15fba1c106d854a0a7cb9b1f (patch) | |
tree | 20dbb76bb0ec35303c2a9267d60c872c5c867f0d /nuttx/configs/stm32f4discovery/src/up_watchdog.c | |
parent | 103151bb4289ed721e1beede1fb057b6b7bbc9cc (diff) | |
download | px4-nuttx-62fb03e8a5fe25cf15fba1c106d854a0a7cb9b1f.tar.gz px4-nuttx-62fb03e8a5fe25cf15fba1c106d854a0a7cb9b1f.tar.bz2 px4-nuttx-62fb03e8a5fe25cf15fba1c106d854a0a7cb9b1f.zip |
Add STM32 watchdog configuration
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4617 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/stm32f4discovery/src/up_watchdog.c')
-rw-r--r-- | nuttx/configs/stm32f4discovery/src/up_watchdog.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/nuttx/configs/stm32f4discovery/src/up_watchdog.c b/nuttx/configs/stm32f4discovery/src/up_watchdog.c new file mode 100644 index 000000000..4bef40f78 --- /dev/null +++ b/nuttx/configs/stm32f4discovery/src/up_watchdog.c @@ -0,0 +1,136 @@ +/************************************************************************************ + * configs/stm32f4discovery/src/up_watchdog.c + * arch/arm/src/board/up_watchdog.c + * + * Copyright (C) 2012 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 <errno.h> +#include <debug.h> + +#include <nuttx/watchdog.h> +#include <arch/board/board.h> + +#include "stm32_wdg.h" + +#ifdef CONFIG_WATCHDOG + +/************************************************************************************ + * Definitions + ************************************************************************************/ +/* Configuration *******************************************************************/ +/* Wathdog hardware should be enabled */ + +#if !defined(CONFIG_STM32_WWDG) && !defined(CONFIG_STM32_IWDG) +# warning "One of CONFIG_STM32_WWDG or CONFIG_STM32_IWDG must be defined" +#endif + +/* Select the path to the registered watchdog timer device */ + +#ifndef CONFIG_STM32_WDG_DEVPATH +# ifdef CONFIG_EXAMPLES_WATCHDOG_DEVPATH +# define CONFIG_STM32_WDG_DEVPATH CONFIG_EXAMPLES_WATCHDOG_DEVPATH +# else +# define CONFIG_STM32_WDG_DEVPATH "/dev/watchdog0" +# endif +#endif + +/* Use the un-calibrated LSI frequency if we have nothing better */ + +#if defined(CONFIG_STM32_IWDG) && !defined(CONFIG_STM32_LSIFREQ) +# define CONFIG_STM32_LSIFREQ STM32_LSI_FREQUENCY +#endif + +/* Debug ***************************************************************************/ +/* Non-standard debug that may be enabled just for testing the watchdog timer */ + +#ifndef CONFIG_DEBUG +# undef CONFIG_DEBUG_WATCHDOG +#endif + +#ifdef CONFIG_DEBUG_WATCHDOG +# define wdgdbg dbg +# define wdglldbg lldbg +# ifdef CONFIG_DEBUG_VERBOSE +# define wdgvdbg vdbg +# define wdgllvdbg llvdbg +# else +# define wdgvdbg(x...) +# define wdgllvdbg(x...) +# endif +#else +# define wdgdbg(x...) +# define wdglldbg(x...) +# define wdgvdbg(x...) +# define wdgllvdbg(x...) +#endif + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/**************************************************************************** + * Name: up_wdginitialize() + * + * Description: + * Perform architecuture-specific initialization of the Watchdog hardware. + * This interface must be provided by all configurations using + * apps/examples/watchdog + * + ****************************************************************************/ + +int up_wdginitialize(void) +{ + /* Initialize tha register the watchdog timer device */ + +#if defined(CONFIG_STM32_WWDG) + stm32_wwdginitialize(CONFIG_STM32_WDG_DEVPATH); + return OK; +#elif defined(CONFIG_STM32_IWDG) + stm32_iwdginitialize(CONFIG_STM32_WDG_DEVPATH, CONFIG_STM32_LSIFREQ); + return OK; +#else + return -ENODEV; +#endif +} + +#endif /* CONFIG_WATCHDOG */ |