timer_a_ex3_continousModeOperationWithTAIEInterrupt.c

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 * Copyright (c) 2017, Texas Instruments Incorporated
 * All rights reserved.
 *
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 *    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
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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//******************************************************************************
//
//*****************************************************************************
#include "driverlib.h"
 
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 in continuous mode sourced by ACLK
    Timer_A_clearTimerInterrupt(TIMER_A1_BASE);
 
    Timer_A_initContinuousModeParam param = {0};
    param.clockSource = TIMER_A_CLOCKSOURCE_ACLK;
    param.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_1;
    param.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_ENABLE;
    param.timerClear = TIMER_A_DO_CLEAR;
    param.startTimer = true;
    Timer_A_initContinuousMode(TIMER_A1_BASE, &param);
 
    //Enter LPM0, enable interrupts
    __bis_SR_register(LPM0_bits + GIE);
 
    //For debugger
    __no_operation();
}
 
//******************************************************************************
//
//This is the TIMER1_A3 interrupt vector service routine.
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=TIMER1_A1_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(TIMER1_A1_VECTOR)))
#endif
void TIMER1_A1_ISR (void)
{
    //Any access, read or write, of the TAIV register automatically resets the
    //highest "pending" interrupt flag
    switch ( __even_in_range(TA1IV,14) ){
        case  0: break;                          //No interrupt
        case  2: break;                          //CCR1 not used
        case  4: break;                          //CCR2 not used
        case  6: break;                          //CCR3 not used
        case  8: break;                          //CCR4 not used
        case 10: break;                          //CCR5 not used
        case 12: break;                          //CCR6 not used
        case 14:
            //Toggle P1.0                    // overflow
            GPIO_toggleOutputOnPin(
                GPIO_PORT_P1,
                GPIO_PIN0
            );
            break;
        default: break;
    }
}