RTOS/MSP432P401R: Strange behaviour of SimpleLink Timer driver

Hi Julian,

I was able to reproduce this behavior.

I'm looping the TI-RTOS experts so they can comment on this. My guess that this has to do on how the timer was created using "Timer_create" and the Hwi.

In the meantime, could you please run this example code: timerled example with these modifications:

1. In timerled.c

void *mainThread(void *arg0)
{
    /* Period and duty in microseconds */
    Timer_Handle timer0;
    Timer_Params params;

    /* Call driver init functions */
    GPIO_init();
    Timer_init();

    /* Turn off user LED */
    GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_OFF);

    /* Setting up the timer in continuous callback mode that calls the callback
     * function every 1,000,000 microseconds, or 1 second.
     */
    Timer_Params_init(&params);
//    params.period = 1000000;
    params.period = 166;
    params.periodUnits = Timer_PERIOD_US;
    params.timerMode = Timer_CONTINUOUS_CALLBACK;
    params.timerCallback = timerCallback;

    timer0 = Timer_open(/*Board_TIMER0*/Board_TIMER2, &params);

    if (timer0 == NULL) {
        /* Failed to initialized timer */
        while (1);
    }

    if (Timer_start(timer0) == Timer_STATUS_ERROR) {
        /* Failed to start timer */
        while (1);
    }

    while(1)
    {
        sleep(2);
    }
}

2. In MSP_EXP432P401R.c

const TimerMSP432_HWAttrs timerMSP432HWAttrs[MSP_EXP432P401R_TIMERCOUNT] = {
    /* Timer32_0 */
    {
        .timerBaseAddress = TIMER32_0_BASE,
        .clockSource = TIMER_A_CLOCKSOURCE_SMCLK,
        .intNum = INT_T32_INT1,
        .intPriority = ~0
    },
    {
        .timerBaseAddress = TIMER32_1_BASE,
        .clockSource = TIMER_A_CLOCKSOURCE_SMCLK,
        .intNum = INT_T32_INT2,
        .intPriority = ~0
    },
    /* Timer_A1 */
    {
        .timerBaseAddress = TIMER_A1_BASE,
        .clockSource = /*TIMER_A_CLOCKSOURCE_ACLK*/TIMER_A_CLOCKSOURCE_SMCLK,
        .intNum = INT_TA1_0,
        .intPriority = ~0
    },
    /* Timer_A2 */
    {
        .timerBaseAddress = TIMER_A2_BASE,
        .clockSource = TIMER_A_CLOCKSOURCE_ACLK,
        .intNum = INT_TA2_0,
        .intPriority = ~0
    },
    /* Timer_A3 */
    {
        .timerBaseAddress = TIMER_A3_BASE,
        .clockSource = TIMER_A_CLOCKSOURCE_ACLK,
        .intNum = INT_TA3_0,
        .intPriority = ~0
    }
};

With that code I was not able to reproduce this behavior, but maybe you will have different results.

 Best regards,

  David