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TMS320F28379S: 采用eCAP捕获霍尔信号边沿,偶尔会出现捕获不到边沿,什么原因?

Part Number: TMS320F28379S


采用eCAP捕获霍尔信号上升沿和下降沿,计算电机转速,会偶尔出现边沿捕获不成功的现象。会是什么原因?

eCAP配置如下: