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自己做的一个USBdongle,做出来把USBdongle固件烧进去,插进电脑却没反应

Other Parts Discussed in Thread: CC2540

用的是CC2540,把固件烧进去,插电脑却不会自动装驱动,一点反应都没,我的电脑设备管理器也没变化,我把原理图发了上来,请教一下是不是原理图有问题?