CCS/LAUNCHXL-CC2640R2: PWM

Try to use the following code for 5Hz PWM.

    PWM_Handle pwm1 = NULL;
    PWM_Params params;

    /* Call driver init functions. */
    PWM_init();

    PWM_Params_init(&params);

    params.idleLevel = PWM_IDLE_LOW; // Output low when PWM is not running
    params.periodUnits = PWM_PERIOD_HZ; // Period is in Hz
    params.periodValue = 5; // 5Hz
    params.dutyUnits = PWM_DUTY_FRACTION; // Duty is in fractional percentage
    params.dutyValue = (uint32_t) (((uint64_t) PWM_DUTY_FRACTION_MAX * 50) / 100);; // 50% initial duty cycle

    pwm1 = PWM_open(Board_PWM0, &params);
    if (pwm1 == NULL) {
        /* Board_PWM0 did not open */
        while (1);
    }
    PWM_start(pwm1);