Re: [9fans] A setup

[Skip Tavakkolian <skip.tavakkolian@gmail.com>]

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i can think of two options:

- you could go for an all Plan 9 distributed solution. this will be the
easiest to roll out and maintain in my opinion (security, administration,
maintenance, etc). i have used this setup with over a dozen 9pi cpu's (tftp
booting from a 386-based auth+fs) collecting bluetooth data (via usb) and
logging it on the fs.  it worked well; the collector is a simple rc script
that reads files served by the bluetooth fs and writes the data to the
(imported) filesystem; it all uses 9P, of course.

- you could build a 9P network on top of heterogeneous OS environments ,
but things get unnecessarily messy. you have to deal with authentication,
 log forwarding or u9fs, non-standard ways of talking to USB, or serial and
needing to build your own 9P file server for each, etc.

-Skip



On Sat, Nov 1, 2014 at 2:41 PM, Shane Morris <edgecomberts@gmail.com> wrote:

> Hi 9fans,
>
> I wish to have a 9P based sensor and actuator reporting system for an
> aquaponics setup I am designing.
>
> I was going to use a RaspberryPi running Plan 9, an "A la mode" for the
> interface to the Arduino shield, and a Cooking Hacks Open Aquarium/ Open
> Garden shield (so I would need two RaspberryPi's). On the control side of
> things, I would have my MacBook access the namespace via Mac9P.
>
> Some questions:
>
> * Would it be better to use a RaspberryPi Plan 9 CPU image rather than a
> terminal image? The only interface I will need from the RaspberryPi to the
> Arduino is TTL serial
> * Eventually I would create another RaspberryPi, running Linux using
> 9mount, to display various statistics and data about the system. I'd be
> writing the interpreter for the information from the Open Aquarium/ Open
> Garden shields in Python. With what I have described, all I would need to
> do is "open" the TTL serial stream file from each of the RPis and read out
> the data, am I correct?
> * Does anyone have any constructive thoughts on this system setup? Please
> note, I am doing this to get a handle on 9P.
>
> Many thanks!
>
> Shane.
>
>

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