TMS570LS1224: Problem using ECAP and EPWM Example with Hercules Launchpad

/** @file sys_main.c 
*   @brief Application main file
*   @date 11-Dec-2018
*   @version 04.07.01
*
*   This file contains an empty main function,
*   which can be used for the application.
*/

/* 
* Copyright (C) 2009-2018 Texas Instruments Incorporated - www.ti.com 
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*/


/* USER CODE BEGIN (0) */
/* USER CODE END */

/* Include Files */

#include "sys_common.h"

/* USER CODE BEGIN (1) */
#include "stdio.h"
#include "system.h"
#include "etpwm.h"
#include "ecap.h"
#include "sys_core.h"
/* USER CODE END */

/** @fn void main(void)
*   @brief Application main function
*   @note This function is empty by default.
*
*   This function is called after startup.
*   The user can use this function to implement the application.
*/

/* USER CODE BEGIN (2) */
/* USER CODE END */

void main(void)
{
/* USER CODE BEGIN (3) */

    _enable_interrupt_();

#if 1
    etpwmInit();
    ecapInit();

#else
    /* Alternate code for configuring ETPWM and ECAP */
        /* Configure ETPWM1 */
    /* Set the TBCLK frequency =  VCLK4 frequency = 90MHz */
    etpwmSetClkDiv(etpwmREG1, ClkDiv_by_1, HspClkDiv_by_1);

    /* Set the time period as 1000 ns (Divider value = (1000ns * 90MHz) - 1 = 89)*/
    etpwmSetTimebasePeriod(etpwmREG1, 89);

    /* Configure Compare A value as half the time period */
    etpwmSetCmpA(etpwmREG1, 45);

    /* Configure the module to set PWMA value as 1 when CTR=0 and as 0 when CTR=CmpA  */
    etpwmActionQualConfig_t configPWMA;
    configPWMA.CtrEqZero_Action = ActionQual_Set;
    configPWMA.CtrEqCmpAUp_Action = ActionQual_Clear;
    configPWMA.CtrEqPeriod_Action = ActionQual_Disabled;
    configPWMA.CtrEqCmpADown_Action = ActionQual_Disabled;
    configPWMA.CtrEqCmpBUp_Action = ActionQual_Disabled;
    configPWMA.CtrEqCmpBDown_Action = ActionQual_Disabled;
    etpwmSetActionQualPwmA(etpwmREG1, configPWMA);

    /* Start counter in CountUp mode */
    etpwmSetCount(etpwmREG1, 0);
    etpwmSetCounterMode(etpwmREG1, CounterMode_Up);
    etpwmStartTBCLK();

    /* Configure ECAP1 */
    /* Configure Event 1 to Capture the rising edge */
    ecapSetCaptureEvent1(ecapREG1, RISING_EDGE, RESET_DISABLE);

    /* Configure Event 2 to Capture the falling edge */
    ecapSetCaptureEvent2(ecapREG1, FALLING_EDGE, RESET_DISABLE);

    /* Configure Event 3 to Capture the rising edge with reset counter enable */
    ecapSetCaptureEvent3(ecapREG1, RISING_EDGE, RESET_ENABLE);

    /* Set Capure mode as Continuous and Wrap event as CAP3  */
    ecapSetCaptureMode(ecapREG1, CONTINUOUS, CAPTURE_EVENT3);

    /* Start counter */
    ecapStartCounter(ecapREG1);

    /* Enable Loading on Capture */
    ecapEnableCapture(ecapREG1);

    /* Enable Interrupt for CAP3 event */
    ecapEnableInterrupt(ecapREG1, ecapInt_CEVT3);

    printf("You messed up, my dude!");
    fflush(stdout);
#endif
    /*  ... run forever  */
    while(1);

/* USER CODE END */
}


/* USER CODE BEGIN (4) */
void ecapNotification(ecapBASE_t *ecap,uint16 flags)
{
    uint32 cap1, cap2, cap3;
    float64 duty, period;

    cap1 = ecapGetCAP1(ecapREG1);
    cap2 = ecapGetCAP2(ecapREG1);
    cap3 = ecapGetCAP3(ecapREG1);

    duty = (cap2 - cap1)*1000/VCLK4_FREQ;
    period = (cap3 - cap1)*1000/VCLK4_FREQ;

    printf("Duty = %fns\n", duty);
    printf("Period = %fns\n\n", period);
    fflush(stdout);

}
/* USER CODE END */