1 May
2012
1 May
'12
2:27 p.m.
On May 1, 2012, at 4:57 PM, Chuck Guzis wrote:
On 1 May 2012 at 19:52, Tony Duell wrote:
OTG really only allows devices to negotiate who is the master and
the slave, once, at connection time (assuming I've read it right).
It's really a hack to allow two like devices to connect rather than
anything really useful (like peer-to-peer communications).
- Dave
Is there no equivalent of a 'service
request' in USB? (I;ve not read
the stnadard seriously)?
Not as far as I've read the standard. "Speak only when spoken to"
appears to be the rule at least in 1.x and 2.x. USB OTG is a little
different in that some devices can assume either the guise of a
controller or a slave, but one still can't have multiple controllers
in a USB topology as far I know--which may well be dated by now..