TMS320F28374S: EPWM11A register setting.

young june kim

Part Number: TMS320F28374S

I am trying to use the TMS320F28374S EPWM11A, but I am having a problem.
No data is written to EPwm11Regs.CMPA.bit.CMPA.

Please check what is wrong.

================================================================

EPwm11Regs.TBPHS.bit.TBPHS = 0;
EPwm11Regs.TBCTR = 0x0000;

EPwm11Regs.CMPA.bit.CMPA = 0;
EPwm11Regs.CMPB.bit.CMPB = 0;

        EPwm11Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN;
        EPwm11Regs.TBCTL.bit.PHSEN = TB_ENABLE;
EPwm11Regs.TBCTL.bit.PRDLD = TB_SHADOW;
        EPwm11Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;
        EPwm11Regs.TBCTL.bit.CLKDIV = TB_DIV1;
        EPwm11Regs.TBCTL.bit.SYNCOSEL = 0;

        EPwm11Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
        EPwm11Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
        EPwm11Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
        EPwm11Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

        EPwm11Regs.AQCTLA.bit.CAU = AQ_CLEAR;
        EPwm11Regs.AQCTLA.bit.CAD = AQ_SET;
        EPwm11Regs.AQCTLB.bit.CBU = AQ_CLEAR;
        EPwm11Regs.AQCTLB.bit.CBD = AQ_SET;

EDIS;

        EALLOW;
        EPwm11Regs.DCTRIPSEL.bit.DCAHCOMPSEL = 0x4;
EPwm11Regs.TZDCSEL.bit.DCAEVT1 = 2;
EPwm11Regs.TZSEL.bit.DCAEVT1 = 0;
EPwm11Regs.TZCTL.bit.DCAEVT1 = TZ_FORCE_LO;
EPwm11Regs.DCACTL.bit.EVT1SRCSEL = 0;
EPwm11Regs.DCACTL.bit.EVT1FRCSYNCSEL = 1;
        EDIS;

===========================================================

YJ Kim.

over 7 years ago

0 Vasudha Bhadoria over 7 years ago

TI__Genius 10845 points

Hi,
Can you elaborate more about your problem? Are you able to write other registers for EPWM11. Check if clock is enabled for EPWM11.

I did a quick check and was able to set values to CMPA register for EPWM 11.

Thanks
Vasudha

0 young june kim over 7 years ago in reply to Vasudha Bhadoria

Intellectual 710 points

Clock is disabled for EPWM11.

Thanks for your help.

It is cleared.

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TMS320F28374S: EPWM11A register setting.