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
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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
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