Re: RF in TINI

Marc..

 It seems I have to do little more study to understand what ur saying :). 
Will get back to u again if i need any help. 

Suresh

On Thu, 26 Jun 2003, Marc Nicholas wrote:

> Suresh...
> 
> Well, seeing as you want full-duplex...and you want control over the link
> layer...I'd suggest you look for something that can be driven via a databus
> rather than serial port. I doubt very much that you'll have enough control
> over the link layer with a serial based unit as it'll function more like a
> "radio modem" than a radio.
> 
> TINI's databus is quite easy to use via BitPort/DataPort, but you have to be
> careful with CMOS loading on the bus.
> 
> -marc
> 
> On 26/6/03 13:47, "Suresh Purini" 
> <suresh1-rEkehDDEPI54piUD7e9S/g@xxxxxxxxxxxxxxxx> wrote:
> 
> > 
> > Marc,
> > 
> > Thanks a lot. I checked the site and they do have duplex modules. Can I
> > ask you one more question. How can I interface the module thru TINI. Like
> > can I just plug in the module to the serial port or does it require
> > anything more. Sorry if its very trivial. I know very little about these
> > low level stuff.
> > 
> > Suresh
> > 
> > 
> > On Thu, 26 Jun 2003, Marc Nicholas wrote:
> > 
> >> http://www.laipac.com
> >> 
> >> Their 434Mhz modules cost less than US$10 for the 
> >> receiver/transmitter...and
> >> accept "raw" input via a single pin. These are simplex devices,
> >> however...I'm still not 100% sure if you want duplex operation.
> >> 
> >> If you want full-duplex, Laipac have some solutions as do other vendors.
> >> 
> >> 
> >> -marc
> >> 
> >> On 26/6/03 13:32, "Suresh Purini" 
> >> <suresh1-rEkehDDEPI54piUD7e9S/g@xxxxxxxxxxxxxxxx> wrote:
> >> 
> >>> 
> >>> 
> >>> Marc,
> >>> 
> >>>> What sort of range and bandwidth/latency can you live with? You've got a
> >>>> lot
> >>>> of options -- the requirements you've listed only really cover the
> >>>> application layer, not the link layer ;-)
> >>> 
> >>> 
> >>> :) ..  Its an experimental system where we will be testing our stuff in a
> >>> lab(room). So 30m range is good enough for us.
> >>> 
> >>> Regarding bandwidth and latency requirements, there are really no hard
> >>> constraints. Something which is cheap(btwn 100-200$) will serve.
> >>> 
> >>> What I am wondering if its a blutooth device, will the MAC protocol be
> >>> built into the device in which case I cannot experiment with my MAC
> >>> protocols. I want something on which I have explicit control like when I
> >>> can put the device into sleep mode or send/receive data, things like that.
> >>> 
> >>> Suresh
> >>> 
> >>> 
> >>> 
> >>>> -marc
> >>>> 
> >>>> 
> >>>> On 26/6/03 12:46, "Suresh Purini" 
> >>>> <suresh1-rEkehDDEPI54piUD7e9S/g@xxxxxxxxxxxxxxxx> wrote:
> >>>> 
> >>>>> 
> >>>>> Thanks a lot for all of you.
> >>>>> 
> >>>>> I am giving more details about my project.
> >>>>> 
> >>>>> 
> >>>>> We are trying to develop "Reconfigurable MiddleWare(based on CORBA)" for
> >>>>> embedded systems. As a part of this project we are looking at protocol
> >>>>> stack composability depending on user requirements. For example the user
> >>>>> can choose a naive MAC protocol or some power aware MAC protocol as a 
> >>>>> part
> >>>>> of his application development.
> >>>>> 
> >>>>> And we statically compose the middleware depending on the users QOS
> >>>>> requirements(so that the memory footprint will be small).
> >>>>> 
> >>>>> We want to demonstrate the aforementioned project using few embedded
> >>>>> devices.
> >>>>> 
> >>>>> So I am just wondering whether I can find a very easy way to hook up an 
> >>>>> RF
> >>>>> interface to TINI(I am not expert in desigining circuits :( :)).  Also I
> >>>>> want to measure the power consumption of the system.
> >>>>> 
> >>>>> I will try to look in the directions pointed by you.
> >>>>> 
> >>>>> Thanks once again.
> >>>>> 
> >>>>> Sincerely
> >>>>> Suresh
> >>>>> 
> >>>>> On Thu, 26 Jun 2003, Marc Nicholas wrote:
> >>>>> 
> >>>>>> Well, yes it's possible to use various types of embedded radios...
> >>>>>> 
> >>>>>> However, if you're planning on selling a commercial product with an
> >>>>>> embedded
> >>>>>> radio module (and not a device such as a radio modem), do bear in mind
> >>>>>> that
> >>>>>> you'll need to have the whole unit FCC certified.
> >>>>>> 
> >>>>>> If it's just a private use project, you can just use an ISM band radio
> >>>>>> modem...although most of the ISM modules don't generally have enough
> >>>>>> power
> >>>>>> to be useful for remote telemetry applications (what's your
> >>>>>> application?).
> >>>>>> 
> >>>>>> 
> >>>>>> -marc
> >>>>>> 
> >>>>>> On 26/6/03 08:19, "Suresh Purini" 
> >>>>>> <suresh1-rEkehDDEPI54piUD7e9S/g@xxxxxxxxxxxxxxxx> wrote:
> >>>>>> 
> >>>>>>> 
> >>>>>>> Hi-
> >>>>>>> 
> >>>>>>> I am new to TINI and embedded systems in general. Is it possible to 
> >>>>>>> have
> >>>>>>> an RF network interface for TINI. I also want the embedded system to 
> >>>>>>> be
> >>>>>>> powered by battery as i want to measure the power usage(working on 
> >>>>>>> some
> >>>>>>> power aware protocols).
> >>>>>>> 
> >>>>>>> Any help in this regard is well appreiciated.
> >>>>>>> 
> >>>>>>> Thanks in Advance.
> >>>>>>> 
> >>>>>>> Sincerely
> >>>>>>> Suresh
> >>>>>>> 
> >>>>>>> 
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> >>>>>> 
> >>>>>>  
> >>>>>> --------------------------------------------------
> >>>>>> Marc Nicholas Geekythings Inc. C/416.543.4896
> >>>>>> UNIX, Database, Security and Networking Consulting
> >>>>>> 
> >>>>>> 
> >>>>> 
> >>>>> 
> >>>> 
> >>>>  
> >>>> --------------------------------------------------
> >>>> Marc Nicholas Geekythings Inc. C/416.543.4896
> >>>> UNIX, Database, Security and Networking Consulting
> >>>> 
> >>>> 
> >>> 
> >>> 
> >> 
> >>  
> >> --------------------------------------------------
> >> Marc Nicholas Geekythings Inc. C/416.543.4896
> >> UNIX, Database, Security and Networking Consulting
> >> 
> >> 
> > 
> > 
> 
>  
> --------------------------------------------------
> Marc Nicholas Geekythings Inc. C/416.543.4896
> UNIX, Database, Security and Networking Consulting
> 
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