/** * Copyright (c) 2014, Analog Devices, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted (subject to the limitations in the * disclaimer below) provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - 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. * * - Neither the name of Analog Devices, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE * GRANTED BY THIS LICENSE. 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. */ /** * \author Jim Paris */ #include #include void watchdog_init(void) { /* Start disabled. */ T3CON_ENABLE_BBA = 0; } /*---------------------------------------------------------------------------*/ void watchdog_start(void) { /* 32 second timeout. This also locks the watchdog configuration. */ pADI_WDT->T3CON = 0x00E9; pADI_WDT->T3LD = 0x1000; pADI_WDT->T3VAL = 0x1000; } /*---------------------------------------------------------------------------*/ void watchdog_stop(void) { /* Not possible to stop, once enabled */ } /*---------------------------------------------------------------------------*/ void watchdog_periodic(void) { pADI_WDT->T3CLRI = 0xcccc; }