circuitpython/shared-bindings/watchdog/__init__.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/runtime.h"
#include "shared-bindings/watchdog/__init__.h"
//| """Watchdog Timer
//|
//| The `watchdog` module provides support for a Watchdog Timer. This timer will reset the device
//| if it hasn't been fed after a specified amount of time. This is useful to ensure the board
//| has not crashed or locked up. You can enable the watchdog timer using :class:`wdt.WDT`.
//| Note that on some platforms the watchdog timer cannot be disabled once it has been enabled.
//|
//| The WatchDogTimer is used to restart the system when the application crashes and ends
//| up into a non recoverable state. Once started it cannot be stopped or
//| reconfigured in any way. After enabling, the application must "feed" the
//| watchdog periodically to prevent it from expiring and resetting the system.
//|
//| Note that this module can't be imported and used directly. The sole
//| instance of :class:`WatchDogTimer` is available at
//| :attr:`microcontroller.watchdog`.
//|
//| Example usage::
//|
//| from microcontroller.watchdog import WatchDogTimer
//| wdt = WatchDogTimer(timeout=2.5) # enable it with a timeout of 2.5 seconds
//| wdt.feed()"""
//|