Axel Berger wrote on 12/19/2017 6:56 AM:
> rickman wrote:
>> where the device will need a
>> GUI as well as controlling dedicated hardware.
>
> Isn't that the main point here? The Pi has a documented interface for
> external hardware, the self contained machines have one USB port at best
> and that as often as not in passive mode only.

I don't know.  What exactly *is* your point?

As is common on usenet, a post is made asking for info and many posts are
made assuming facts not in evidence.

I guess in all fairness I did ask for people's "thoughts".  lol :)

I would not use an rPi for low level stuff.  For that I would use an
embedded MCU such as a MSP430 or ARM CMx.  I would only use the rPi when I
have need of the features of an OS.  That is pretty much the same set of
problems I could use a phone to solve.

I was asking about the hassles of trying to use a phone without the tyranny
of the phone company, whether it was hard to pick the OS I use and write
control code.  I found some info on using the phone either with a bluetooth
serial port connection or using the USB port for a serial connection and
there even seems to be some info on using the USB port directly as an async
serial port.

I recall seeing USB interface chips that allowed three modes of use, USB (of
course), headphones and data.  Now I know what the data mode is for.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

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