TMS320F2800137: Not able to set ADC interrupt above 50kHZ

Hi,

What do you mean by the interrupt time? Are you trying to configure the ADC SOC using the EPWM?

Can you please elaborate your issue?

Dear Aditya, 

I am trying to set ADC interrupt for the control loops, I am  triggering the ADC interrupt using EPWM period. 

EALLOW;
EPwm1Regs.TBPRD = 0x1000;
// EPwm1Regs.TBPHS.bit.TBPHS = 0x0000;
EPwm1Regs.TBCTR = 0x0000;
// Set Compare values
EPwm1Regs.CMPA.bit.CMPA = 0x0080; // Set compare A value to 150 counts
EPwm1Regs.CMPB.bit.CMPB = 0x0080; //INTERRUPT_PERIOD/2;
// Setup counter mode
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN;
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;
EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;
EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;
// Setup shadowing
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;
// Set actions
EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR;
EPwm1Regs.AQCTLA.bit.CAD = AQ_SET;
EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm1Regs.DBFED.bit.DBFED = BAND;
EPwm1Regs.DBRED.bit.DBRED = BAND;

EPwm1Regs.ETSEL.bit.SOCAEN = 0; // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 4; // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1; // Generate pulse on 1st event

EDIS;

AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC0 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared

Hi,

What issue are you seeing when you try to run beyond 50kHz? The PWM frequency I believe is correctly functioning. Is it not entering the ADC interrupt on every PWM edge that you've configured?

It is entering into Interrupt but when I am reducing the value in TBPRD register, It is not  reflecting. But the same is reflecting when I am increasing.

EPwm1Regs.TBPRD = 0x1000;