126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2004 Develer S.r.l. (http://www.develer.com/)
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*
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* -->
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*
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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*
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* \brief Watchdog module, supplies a simple API to manage wdt on supported target.
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*
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* $WIZ$ module_name = "wdt"
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* $WIZ$ module_configuration = "bertos/cfg/cfg_wdt.h"
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* $WIZ$ module_supports = "avr"
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*/
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#ifndef DRV_WDT_H
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#define DRV_WDT_H
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#include "cfg/cfg_wdt.h"
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#include <cfg/compiler.h> // INLINE
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/* Configury sanity check */
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#if !defined(CONFIG_WATCHDOG) || (CONFIG_WATCHDOG != 0 && CONFIG_WATCHDOG != 1)
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#error CONFIG_WATCHDOG must be defined to either 0 or 1
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#endif
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#if OS_HOSTED
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#include <cpu/detect.h>
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#include <cfg/os.h>
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#if OS_QT
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#include <QtGui/QApplication>
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#elif OS_POSIX
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#include <sys/select.h>
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#else
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#error unknown CPU
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#endif
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#elif CONFIG_WATCHDOG
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#include CPU_HEADER(wdt)
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#endif /* CONFIG_WATCHDOG */
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#if OS_HOSTED || !CONFIG_WATCHDOG
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/**
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* Reset the watchdog timer.
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*/
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INLINE void wdt_reset(void)
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{
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#if CONFIG_WATCHDOG
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#if OS_POSIX
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static struct timeval tv = { 0, 0 };
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select(0, NULL, NULL, NULL, &tv);
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#endif
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#endif /* CONFIG_WATCHDOG */
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}
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/**
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* Start the watchdog timer that fire at the select
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* timeout.
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*
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* \param timeout this value is target dependant.
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* See the target documentation for more details.
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*/
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INLINE void wdt_start(uint32_t timeout)
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{
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#if CONFIG_WATCHDOG
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#if OS_QT
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// Create a dummy QApplication object
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if (!qApp)
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{
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int argc;
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new QApplication(argc, (char **)NULL);
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}
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(void)timeout;
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#elif OS_POSIX
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(void)timeout; // NOP
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#endif
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#endif /* CONFIG_WATCHDOG */
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(void)timeout; // NOP
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}
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INLINE void wdt_stop(void)
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{
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#if CONFIG_WATCHDOG
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#if OS_QT
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// NOP
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#elif OS_POSIX
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// NOP
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#else
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#error unknown CPU
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#endif
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#endif /* CONFIG_WATCHDOG */
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}
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#endif /* OS_HOSTED || !CONFIG_WATCHDOG */
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#endif /* DRV_WDT_H */
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