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你好 我在配置PWM3A/B和PWM7A/B时出现了一个问题,当EPwm7Regs.AQCSFRC.bit.CSFA = 0, EPwm7Regs.AQCSFRC.bit.CSFB=2时 PWM7B也会发波,PWM7B受控于当EPwm7Regs.AQCSFRC.bit.CSFA ,只要EPwm7Regs.AQCSFRC.bit.CSFA = 0 PWM7B就会发波,这个代码实在280049移植过来的 逻辑性肯定是没有问题的 我想问一下原因