Quote:
Originally Posted by mwheinz
... I've been a computer engineer for 25 years now. There is no "charging protocol" in USB - at least there is no need for one.
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Dear Mr. mwheinz,
before posting any assumptions here, taking them for granted just because you have your 25 years experience in computer engineering, you should make sure that you actually do know what you are talking about.
USB Implementors Forum: Approved Class Specification Documents - Battery Charging Specification v.1.1 from April 15th, 2009
If a device wants to draw more than 500mA for charging purposes, the data lines will get involved.
My pleasure!