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各位大仙，小弟用的时lmusbdll.dll接口去连usb的设备，只是ReadUSBPacket是如何使用的呀，发出的命令，是通过什么返回的，小弟用的是delphi，谢谢了
请多分享些内容，在做什么样的产品，用到什么芯片?
