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28377D USB外接hub,hub连接mouse,程序收不到Reset complet bit?



请教:

28377D USB外接hub,hub连接mouse,根据TI提供的usbhhub.c,程序进行了HubDriverDeviceReset,收不到Reset complete bit?

若跳过Reset complete这步,进行正常的enumeration,再次获取hub设备描述符USBHCDGetDeviceDescriptor,port报错。