timer_b_ex4_upModeOperation.c

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/* --COPYRIGHT--,BSD
 * Copyright (c) 2017, 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
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * --/COPYRIGHT--*/
//******************************************************************************
//*****************************************************************************
#include "driverlib.h"
 
#define TIMER_PERIOD 50000
 
void main (void)
{
    //Stop WDT
    WDT_A_hold(WDT_A_BASE);
 
    //Set P1.0 to output direction
    GPIO_setAsOutputPin(
        GPIO_PORT_P1,
        GPIO_PIN0
        );
 
    /*
     * Disable the GPIO power-on default high-impedance mode to activate
     * previously configured port settings
     */
    PMM_unlockLPM5();
 
    //Start timer
    Timer_B_clearTimerInterrupt(TIMER_B0_BASE);
 
    Timer_B_initUpModeParam param = {0};
    param.clockSource = TIMER_B_CLOCKSOURCE_SMCLK;
    param.clockSourceDivider = TIMER_B_CLOCKSOURCE_DIVIDER_1;
    param.timerPeriod = TIMER_PERIOD;
    param.timerInterruptEnable_TBIE = TIMER_B_TBIE_INTERRUPT_DISABLE;
    param.captureCompareInterruptEnable_CCR0_CCIE =
        TIMER_B_CAPTURECOMPARE_INTERRUPT_ENABLE;
    param.timerClear = TIMER_B_DO_CLEAR;
    param.startTimer = true;
    Timer_B_initUpMode(TIMER_B0_BASE, &param);
 
    //Enter LPM0, enable interrupts
    __bis_SR_register(LPM0_bits + GIE);
 
    //For debugger
    __no_operation();
}
 
//******************************************************************************
//
//This is the Timer B0 interrupt vector service routine.
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=TIMERB0_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(TIMERB0_VECTOR)))
#endif
void TIMERB0_ISR (void)
{
    //Toggle P1.0 using exclusive-OR
    GPIO_toggleOutputOnPin(
        GPIO_PORT_P1,
        GPIO_PIN0
        );
}