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设置AQCSFRC强制EPWM输出状态,输出结果不对应



  EPwm1Regs.AQCSFRC.bit.CSFB=0x0;
  EPwm1Regs.AQCSFRC.bit.CSFA=0x1;

把1A强制配成低,1B不影响。但是输出结果是1A是低,1B也是低?明明配置的是1B正常不受限制啊