text: /* --COPYRIGHT--,BSD
   * Copyright (c) 2015, 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--*/
  /*******************************************************************************
   * MSP432 SysTick - Blink LED Program
   *
   * Description: This program will use the SysTick module to blink an LED with
   * a one second period. Once setup, the application will go into LPM3
   * mode and only wake up to toggle the GPIO pin. This example uses ROM APIs and
   * serves as an introduction to ROM API debugging. View the project readme.txt
   * for steps to start debugging ROM code.
   *
   * This program runs infinitely until manually halted by the user.
   *
   *                MSP432P401
   *             ------------------
   *         /|\|                  |
   *          | |                  |
   *          --|RST         P1.0  |---> P1.0 LED
   *            |                  |
   *            |                  |
   *            |                  |
   *            |                  |
   *            |                  |
   *
   * Author: Timothy Logan
   *******************************************************************************/
  /* DriverLib Includes */
  #include "driverlib.h"
  
  /* Standard Includes */
  #include <stdint.h>
  
  #include <stdbool.h>
  
  int main(void)
  {
      /* Halting the Watchdog */
      MAP_WDT_A_holdTimer();
  
      /* Configuring GPIO as an output */
      MAP_GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);
  
      /* Configuring SysTick to trigger at 1500000 (MCLK is 3MHz so this will make
       * it toggle every 0.5s) */
      MAP_SysTick_enableModule();
      MAP_SysTick_setPeriod(1500000);
      MAP_Interrupt_enableSleepOnIsrExit();
      MAP_SysTick_enableInterrupt();
  
      /* Enabling MASTER interrupts */
      MAP_Interrupt_enableMaster();
  
      while (1)
      {
          MAP_PCM_gotoLPM0();
      }
  }
  
  void systick_isr(void)
  {
      MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);
  }
  