摘要: USB HID设备所需要的描述符 其中 Physical descriptor是可选的,一般不用。 阅读全文
posted @ 2009-07-17 17:58 Fan Zhang 阅读(576) 评论(0) 推荐(0)
摘要: Using USB terminology, a device may send or receive a transaction every USB frame (1 millisecond). A transaction may be made up of multiple packets (token, data, handshake) but is limited in size to 8... 阅读全文
posted @ 2009-07-17 17:36 Fan Zhang 阅读(313) 评论(0) 推荐(0)