Triode wrote: 
> Sounding great to me John.  Few questions:
> 
> 1) Do we need Wifi could a usb dongle be used at lower cost?
> 2) Assume we keep all flash on the SD/microSD to avoid the bricking case
> (see above case)
> 3) Are both usb ports on an internal hub or are they separate
> controllers on the processor
> 4) can you point me at the datasheet for the processor you are planning
> on?

I like the concept of the wifi module connecting via ethernet. The
processor chip has two ethernet ports on an internal switch, the idea is
that one goes to the outside world and the other goes to the wifi. As
far as the processor and software is concerned the wifi is just another
device on the network. You literally don't have to care whether
something is coming from wired or wifi. The software just has to worry
about a single ethernet connection. Any wifi setup issues are dealt with
by browsing to the wifi web page, either through the wifi or wired port,
so the firmware on the processor doesn't have to know anything about it.
I just think it makes things so much simpler from a software
perspective. Since I am thinking about configuration of the player be
controlled by an internal web server, this can just link to the wifi
module's web page. Since it is connected through a hardware switch, you
can always get to the wifi configuration via a hardwired connection to
the player. 

Each USB port has it's own separate controller, each of which can either
be a device or host. 

The processor is a TI AM3358, the technical reference manual gives a lot
of detail on the USB subsystem:
http://www.ti.com/lit/ug/spruh73g/spruh73g.pdf

John S.


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