[参考译文] F28M36H53C2：ePWM Continuous Software Force不强制ePWMxB

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/630282/f28m36h53c2-epwm-continuous-software-force-does-not-force-epwmxb

部件号：F28M36H53C2

您好，

我在ePWM模块和软件强制状态方面遇到一些配置问题：

我的ePWM1和ePWM2配置如下：

PWMs[I]->TBCTR = 0；
PWMs[I]->TBPRDM2.Half.TBPRD =周期；
PWMs[I]->TBPHS.ALL = 0；
PWMs[I]->TBCTL.bit.FREE_SOFT = 0；
PWMs[i]->TBCTL.bit.PHSDIR = 0；
PWMs[I]->TBCTL.bit.CLKDIV = TB_DIV1；
PWMs[I]->TBCTL.bit.HSPCLKDIV = TB_DIV1；
PWMs[I]->TBCTL.bit.SYNCOSEL = TB_SYNC_DISABLE；
PWMs[I]->TBCTL.bit.PRDLD = TB_shadow;
PWMs[I]->TBCTL.bit.PHSEN = TB_DISABLE；
PWMs[I]->TBCTL.bit.CTRMODE = TB_COUNT_UP；
//计数器比较
PWMs[I]->CMPCTL.bit.SHDWBMODE = CC_SHADO;
PWMs[I]->CMPCTL.bit.SHDWAMODE = CC_SHAME;
PWMs[I]->CMPCTL.bit.LOADBMODE = CC_CTR_PRD；
PWMs[I]->CMPCTL.bit.LOADAMODE = CC_CTR_PRD；

PWMs[I]->CMPAM2.Half.CMPA = 0；
PWMs[I]->CMPBM.Half.CMPB = 0；

PWMs[I]->AQCTLR.bit.SHDWAQAMODE = 0x1;//阴影
PWMs[I]->AQCTLR.bit.SHDWAQBMODE = 0x1;//阴影
PWMs[I]->AQCTLR.bit.LDAQASYNC = 0x00；
PWMs[I]->AQCTLR.bit.LDAQBSYNC = 0x00；
PWMs[I]->AQCTLR.bit.LDAQAMODE = CC_CTR_PRD；
PWMs[I]->AQCTLR.bit.LDAQBMODE = CC_CTR_PRD；

//事件触发器
PWMs[I]->ETSEL.bit.SOCAEN =1；//在组上启用SOC
PWMs[I]->ETSEL.bit.SOCBEN =0;//禁用B组上的SOC
PWMs[I]->ETSEL.bit.SOCASEL = ET_CTRU_CMPA；//从CMPA/CSPC中选择SOC on up count (打开计数)
PWMs[I]->ETSEL.bit.SOCASELCMP = 0x0；// CMPA
PWMs[I]->etps.bit.SOCAPRD = et_1;//在每个事件上生成SOCA脉冲

PWMs[I]->TZsel.bit.CBC1 = 1；
PWMs[I]->TZCTL.bit.TZA = TZ_FORT_LO；
PWMs[I]->TZCTL.bit.TZB = TZ_FORT_LO；

PWMs[I]->TZCLR.bit.CBCPULSE =1;// PRD上CBC中断时清除
PWMs[I]->TZEINT.bit.CBC = 1；

//PWMs[I]->DCTRIPSEL.bit.DCAHCOMPSEL = DC_TRIPIN7；
//PWMs[I]->DCTRIPSEL.bit.DCBHCOMPSEL = DC_TRIPIN7；
//死区
PWMs[i]->DBCTL.bit.out模式= DB_FULL启用；
PWMs[I]->DBCTL.bit.POLSE= DB_ACTV_HIC；
PWMs[I]->DBFED=100；
PWMs[I]->DBRED=100；

PWMs[I]->AQSFRC.bit.RLDCSF= 3； 

我有ePWM1和ePWM2以这种方式链接： 

EPwm2Regs.EPWMXLINK.Bit.CMPALINK = PWM_LINK_EPWM1；//synch将PWM1写入PWM2
EPwm2Regs.EPWMXLINK.Bit.CMPBLINK = PWM_LINK_EPWM1；//synch将PWM1写入PWM2
EPwm2Regs.EPWMXLINK.Bit.TBPRDLINK = PWM_LINK_EPWM1； 

每隔10毫秒，我修改一次Action Qualifier (操作限定符)以如下方式注册：

	如果(位置)
/*ePWM reg 1 */
PWMs[I]->AQCTLA.ALL = AQ_SET |(AQ_NO_ACTION << 2)|(AQ_CLEAR <4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <<10)；
PWMs[I]->AQCTLB.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_SET << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <<10)；
/*ePWM reg 2 */
PWMs[I+1]->AQCTLA.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <10)；
PWMs[I+1]->AQCTLB.ALL = AQ_SET |(AQ_NO_ACTION <<2)|(AQ_NO_ACTION <<4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <10);
}
其它
{
PWMs[I]->AQCTLA.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I]->AQCTLB.ALL = AQ_SET |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I+1]->AQCTLA.ALL = AQ_SET |(AQ_NO_ACTION << 2)|(AQ_CLEAR <4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I+1]->AQCTLB.ALL = AQ_CLEAR |(AQ_NO_ACTION <<2)|(AQ_SET <<4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <10);
} 

现在在某些情况下，我需要执行软件强制以强制降低它，我不能使用HW强制，因为它已经专用于不同的逻辑。

因此，我所做的是调用一个正在执行以下操作的函数：

PWMs[I]->AQCSRC.bit.CSFA= 1;
PWMs[I]->AQCSRC.bit.CSFB= 1;
PWMs[I]->AQCFRCM.bit.CSFA= 1;
PWMs[I]->AQCFRCM.bit.CSFB= 1;
PWMs[I]->AQCTLA.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I]->AQCTLB.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I]->AQCTLAM.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<<8)|(AQ_NO_ACTION <10)；
PWMs[I]->AQCTLBM.ALL = AQ_CLEAR |(AQ_NO_ACTION << 2)|(AQ_NO_ACTION << 4)|(AQ_NO_ACTION <<6)|(AQ_NO_ACTION <<8)|(AQ_NO_ACTION <10)； 

在ePWM1和ePWM2上

现在的问题是，我的ePWM1A和ePWM2A过低，而ePWM1B和ePWM2B过高。

我错过了什么吗？