CCS/TMS320F28377S: Example "eqep_pos_speed_cpu01" doesn't work properly

Tool/software: Code Composer Studio

Hi

I would like to ask about the example: "eqep_pos_speed_cpu01". I have imported from C2000Ware_1_00_01_00  and only change the PWM1 to PWM2, because I'm working on Launchpad F28377S..

I have everything connected like in the example description, but it seems that the interrupt doesn't occur and the data theta_raw is NULL.

The program is as follows:

#include "F28x_Project.h"
#include "Example_posspeed.h"

POSSPEED qep_posspeed=POSSPEED_DEFAULTS;
Uint16 Interrupt_Count = 0;

void initEpwm();
__interrupt void prdTick(void);

void main(void)
{
   InitSysCtrl();
   InitEQep1Gpio();
   InitEPwm2Gpio(); 
   EALLOW;
   GpioCtrlRegs.GPADIR.bit.GPIO4 = 1;
   GpioDataRegs.GPACLEAR.bit.GPIO4 = 1; 
   EDIS;

   DINT;

   InitPieCtrl();

   IER = 0x0000;
   IFR = 0x0000;

   InitPieVectTable();
   EALLOW;
   PieVectTable.EPWM2_INT= &prdTick;
   EDIS;   
   initEpwm(); 
   IER |= M_INT3;

   PieCtrlRegs.PIEIER3.bit.INTx1 = 1;

   EINT;   // Enable Global __interrupt INTM
   ERTM;   // Enable Global realtime __interrupt DBGM

   qep_posspeed.init(&qep_posspeed);

for(;;)
   {

   }

}
__interrupt void prdTick(void)
{
    Uint16 i;
   qep_posspeed.calc(&qep_posspeed);
   Interrupt_Count++;
   if (Interrupt_Count==1000)
   {
       EALLOW;
       GpioDataRegs.GPASET.bit.GPIO4 = 1; // Pulse Index signal  (1 pulse/rev.)
       for (i=0; i<700; i++)
       {
       }
       GpioDataRegs.GPACLEAR.bit.GPIO4 = 1;
       Interrupt_Count = 0;               // Reset count
       EDIS;
   }
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;
   EPwm2Regs.ETCLR.bit.INT=1;                    
}

The Example_EPwmSetup.c is configured for EPWM2.

Maybe I have missed something?

Thank you very much for your time.
Tomasz