CCS/TMS320F28379D: TMS320F28379D

What you say it isn't working, I assume you mean the phase shifting specifically and that the waveforms are otherwise okay, correct? What kind of sync event (SYNCIN, TBCTL[SWFSYNC], etc...) are you using?

Whitney

Yes, waveforms are ok and I can control the period and duty cycle properly. I am having a problem with phase shifting. I am using TB_SYNC_DISABLE and TBCTL.bit.SWFSYNC = 1. 

I am providing the code for the registers,

(*ePWM[j]).TBCTL.bit.PRDLD = TB_SHADOW;  // set Shadow load

        (*ePWM[j]).TBPRD = period;               // PWM frequency = 1/(2*TBPRD)

        (*ePWM[j]).CMPA.bit.CMPA = period / 2;   // set duty 50% initially

        (*ePWM[j]).CMPA.bit.CMPAHR = (1 << 8);   // initialize HRPWM extension

        (*ePWM[j]).CMPB.bit.CMPB = period / 2;   // set duty 50% initially

        (*ePWM[j]).CMPB.all |= 1;

        (*ePWM[j]).TBPHS.bit.TBPHS = 1000;

        (*ePWM[j]).TBCTR = period;

        (*ePWM[j]).TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Select up-down

        (*ePWM[j]).TBCTL.bit.PHSEN = 1; //TB_ENABLE;                                                // count mode

        (*ePWM[j]).TBCTL.bit.SYNCOSEL = TB_SYNC_DISABLE;

        (*ePWM[j]).TBCTL.bit.HSPCLKDIV = TB_DIV1;

        (*ePWM[j]).TBCTL.bit.CLKDIV = TB_DIV1;          // TBCLK = SYSCLKOUT

        (*ePWM[j]).TBCTL.bit.FREE_SOFT = 11;

        //(*ePWM[j]).HRPCTL.bit.TBPHSHRLOADE = 1;

        (*ePWM[j]).CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;  // LOAD CMPA on CTR = 0

        (*ePWM[j]).CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

        (*ePWM[j]).CMPCTL.bit.SHDWAMODE = CC_SHADOW;

        (*ePWM[j]).CMPCTL.bit.SHDWBMODE = CC_SHADOW;

        (*ePWM[j]).AQCTLA.bit.CAU = AQ_SET;             // PWM toggle high/low

        (*ePWM[j]).AQCTLA.bit.CAD = AQ_CLEAR;

        (*ePWM[j]).AQCTLB.bit.CBU = AQ_SET;             // PWM toggle high/low

        (*ePWM[j]).AQCTLB.bit.CBD = AQ_CLEAR;

        EALLOW;

        (*ePWM[j]).HRCNFG.all = 0x0;

        (*ePWM[j]).HRCNFG.bit.EDGMODE = HR_BEP;       

        (*ePWM[j]).HRCNFG.bit.CTLMODE = HR_PHS;   

        (*ePWM[j]).HRCNFG.bit.HRLOAD = HR_CTR_ZERO_PRD;  

        (*ePWM[j]).HRCNFG.bit.EDGMODEB = HR_BEP;        

        (*ePWM[j]).HRCNFG.bit.CTLMODEB = HR_PHS;      

        (*ePWM[j]).HRCNFG.bit.HRLOADB = HR_CTR_ZERO_PRD; 

        (*ePWM[j]).HRCNFG.bit.AUTOCONV = 1;      

        (*ePWM[j]).HRPCTL.bit.TBPHSHRLOADE = 1;   

        (*ePWM[j]).HRPCTL.bit.HRPE = 1;    

        CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 1;   

       (*ePWM[j]).TBCTL.bit.SWFSYNC = 1;       

Hello, Can you suggest me how can I do the phase shifting for HRPWM? I have shared all the register value in my previous comment. If you have any sample code can you share that with me?

Hello,

Thanks for your reply. I couldn't solve it yet. 

The period value is 24 (decimal). I was not sure about TBPHS values. I tried to do phase shifting using EPWM, it seemed working. I need to recheck that again. For high resolution phase shifting is not working at all. 

I haven't installed the Digital Power SDK package. I will install it now and try to see that example. I am attaching my whole code in this message.

hrpwm_ex2_prdupdown_sfo_v8.ziphrpwm_ex2_prdupdown_sfo_v8.zip

The code you attached appears to just be an exact copy of the HRPWM up-down example for the F28004x. Did you mean to attach something else? I thought you were using the F2837xD and had made some edits to the code...?

Whitney

Hello,

Yes, this is the HRPWM_prdupdown code. I was trying to change TB_PHSEN and TBPHS register values. I have made some changes now by creating two HRPWM to control epwm1 and epwm2 individually. I am attaching the code here.8883.hrpwm_prdupdown_sfo_v8.zip

I ran your code and was able to try different TBPHS values and see the affect on the signals on my oscilloscope. Does that not work for you? Do you still not see the expected waveforms?

Whitney