MSP430FR6989 Timer B ISR

Other Parts Discussed in Thread: MSP430FR6989

I am using MSP430FR6989 Timer B for Capture interrupt.

Initialization:

void init_timer() {

	Timer_A_initContinuousModeParam initContParam = { 0 };					//Timer A
	initContParam.clockSource = TIMER_A_CLOCKSOURCE_ACLK; //32.768KHz clock used for timer
	initContParam.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_1;//No divider
	initContParam.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_DISABLE; //Compare interrupt used
	initContParam.timerClear = TIMER_A_DO_CLEAR;//clear previous interrupts, if any
	initContParam.startTimer = false;					//dont start immediately

	Timer_B_initContinuousModeParam initContParamb = { 0 };					//Timer B
	initContParamb.clockSource = TIMER_B_CLOCKSOURCE_ACLK; //32.768KHz clock used for timer
	initContParamb.clockSourceDivider = TIMER_B_CLOCKSOURCE_DIVIDER_1;//No divider
	initContParamb.timerInterruptEnable_TBIE = TIMER_B_TBIE_INTERRUPT_DISABLE; //Compare interrupt used
	initContParamb.timerClear = TIMER_B_DO_CLEAR;//clear previous interrupts, if any
	initContParamb.startTimer = false;					//dont start immediately

	Timer_A_initContinuousMode(TIMER_A1_BASE, &initContParam);  //Base 1
	Timer_A_initContinuousMode(TIMER_A0_BASE, &initContParam);  //Base 0
	Timer_A_initContinuousMode(TIMER_A2_BASE, &initContParam);  //Base 2

	Timer_B_initContinuousMode(TIMER_B0_BASE, &initContParamb); //Timer B
 	//Initiaze compare mode
	Timer_A_clearCaptureCompareInterrupt(TIMER_A1_BASE,         //Base 1
	TIMER_A_CAPTURECOMPARE_REGISTER_0);

	Timer_A_clearCaptureCompareInterrupt(TIMER_A0_BASE,         //Base 0
	TIMER_A_CAPTURECOMPARE_REGISTER_0);

	Timer_A_clearCaptureCompareInterrupt(TIMER_A2_BASE,         //Base 2
	TIMER_A_CAPTURECOMPARE_REGISTER_0);

	Timer_B_clearCaptureCompareInterrupt(TIMER_B0_BASE,         //Timer B
	TIMER_B_CAPTURECOMPARE_REGISTER_2);





	Timer_A_initCompareModeParam initCompParam_b_1 = { 0 };		//Base 1
	initCompParam_b_1.compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_0;
	initCompParam_b_1.compareInterruptEnable =
	TIMER_A_CAPTURECOMPARE_INTERRUPT_ENABLE;
	initCompParam_b_1.compareOutputMode = TIMER_A_OUTPUTMODE_OUTBITVALUE;
	initCompParam_b_1.compareValue = COMPARE_VALUE_B_1;


	Timer_A_initCompareModeParam initCompParam_b_0 = { 0 };		//Base 0			//Button debounce timer(20ms)
	initCompParam_b_0.compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_0;
	initCompParam_b_0.compareInterruptEnable =
	TIMER_A_CAPTURECOMPARE_INTERRUPT_ENABLE;
	initCompParam_b_0.compareOutputMode = TIMER_A_OUTPUTMODE_OUTBITVALUE;
	initCompParam_b_0.compareValue = DEBOUNCE_20MS;



	Timer_A_initCompareModeParam initCompParam_b_2 = { 0 };		//Base 2
	initCompParam_b_2.compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_0;
    initCompParam_b_2.compareInterruptEnable =
    TIMER_A_CAPTURECOMPARE_INTERRUPT_ENABLE;
	initCompParam_b_2.compareOutputMode = TIMER_A_OUTPUTMODE_OUTBITVALUE;
	initCompParam_b_2.compareValue = COMPARE_VALUE_B_2;


	Timer_B_initCaptureModeParam initCapParam_b_3 ={ 0 };	   //Timer b
	initCapParam_b_3.captureRegister = TIMER_B_CAPTURECOMPARE_REGISTER_2;
	initCapParam_b_3.captureMode = TIMER_B_CAPTUREMODE_FALLING_EDGE;
	initCapParam_b_3.captureInputSelect = TIMER_B_CAPTURE_INPUTSELECT_CCIxA;
	initCapParam_b_3.captureInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_ENABLE;
	initCapParam_b_3.synchronizeCaptureSource = TIMER_B_CAPTURE_SYNCHRONOUS;



	Timer_A_initCompareMode(TIMER_A1_BASE, &initCompParam_b_1);    //Base 1
	Timer_A_initCompareMode(TIMER_A0_BASE, &initCompParam_b_0);    //Base 0
	Timer_A_initCompareMode(TIMER_A2_BASE, &initCompParam_b_2);    //Base 2
	Timer_B_initCaptureMode(TIMER_B0_BASE, &initCapParam_b_3);     //Timer b

	Timer_A_startCounter(TIMER_A1_BASE,							   //Base 1
	TIMER_A_UP_MODE);

	Timer_B_startCounter(TIMER_B0_BASE,							   //Timer B
	TIMER_B_CONTINUOUS_MODE);


	//Timer_A_startCounter(TIMER_A0_BASE,						   //Base 0
	//TIMER_A_UP_MODE);

	//Timer_A_startCounter(TIMER_A2_BASE,						   //Base 2
	//TIMER_A_UP_MODE);
}


I am taking the capture interrupt on Pin 3.6 (CCIA2).

GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P3,GPIO_PIN6,GPIO_SECONDARY_MODULE_FUNCTION);

 Below is the ISR handler:

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=TIMERB2_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(TIMERB2_VECTOR)))
#endif
void TIMERB2_ISR(void)
{
    /* Any access, read or write, of the TBIV register automatically resets the
       highest "pending" interrupt flag. */
    switch(__even_in_range(TBIV,14))
    {
    case  0: break;                          // No interrupt
    case  2: break;                          // CCR1 not used
    case  4: __no_operation();
    	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:                                 // overflow
        
        break;
    default: break;
    }
}

The issue is that every time a pulse arrives on the P3.6 capture pin, uC goes into Trap ISR.

Is there any error in ISR declaration?