09A_WDT_timer_interval

/*
 * 09A_WDT_timer_interval: demonstrates use of the Watch Dog Timer in
 * interval mode (does not trigger a PUC on interrupt) and toggles the red LED.
 *
 * MCLK and SMCLK use default DCO (~1.045 MHz)
 * ACLK uses REFO (~32,768 Hz)
 * WDT uses ACLK as source with clock divider of 32K for toggle every 1 sec
 *
 * Frank Milburn 	3 September 2016
 * Developed on MSP-EXP430F5529 LaunchPad Rev1.5 on CCS V6.1, TIv16.6.0.STS
 */

#include "driverlib.h"

#define  RED_LED		GPIO_PORT_P1,GPIO_PIN0

//--------------------------------  m a i n  -----------------------------------
void main(void)
{
    WDT_A_initIntervalTimer(WDT_A_BASE,
                            WDT_A_CLOCKSOURCE_ACLK,
                            WDT_A_CLOCKDIVIDER_32K);

    WDT_A_start(WDT_A_BASE);

    //Place WDT in timer interrupt mode
    SFR_clearInterrupt(SFR_WATCHDOG_INTERVAL_TIMER_INTERRUPT);
    SFR_enableInterrupt(SFR_WATCHDOG_INTERVAL_TIMER_INTERRUPT);

    GPIO_setAsOutputPin(RED_LED);

    //Enter LPM3, enable interrupts
    __bis_SR_register(LPM3_bits + GIE);

    //Loop forever
    for(;;);
}
//---------------------------  W D T _ A _ I S R  ----------------------------
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=WDT_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(WDT_VECTOR)))
#endif
void WDT_A_ISR(void)
{
    GPIO_toggleOutputOnPin(RED_LED);             // toggle red LED
}
/* This code contains fragments and sections subject to the following
 * copyright:
 *
 * --COPYRIGHT--,BSD
 * Copyright (c) 2016, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted 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 Texas Instruments Incorporated 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.
 * --/COPYRIGHT--*/