[time-nuts] IRIG-B with Arduino

[Bruce Lane]

	Thanks, Chris. Between that and what I've found already, I think this is very do-able.

	Keep the peace(es).

*********** REPLY SEPARATOR  ***********

On 15-Dec-10 at 21:52 Chris Albertson wrote:

>Loks like I need to make myself clear also.  Sorry.  When I said
>develop on the desktop I meant for a desktop target.  Writing code
>this is to run on the desktop is far easier then wrioting code that is
>to run in a micro controller.  Of course in both cases to type and
>edit using ther desktop machine.
>
>I have programmed micros using toggle switches and push buttons to
>directly load in binary code bit by bit put that gets old real quick
>but that was the way it was done.
>
>So to be redundant.  The best way to learn programming in C is to do
>so by writing for a simple and easy to use target execution
>environment.  The simplest is a command line terminal
>
>You can find the source code for NTP at
>http://www.ntp.org/downloads.html
>un tar the file into "somedir" and then look at
>...somedir/ntp-4.2.6p2/ntp/refclock_irig.b
>and in there is the code to read IRIG and also some good comments that
>explain both irig and how to decode it.
>This code samples the irig signal 8,000 times per second and does the
>demodulation in software.
>It also does to "ntp stuff" that you don't need to care about
>
>The other file is in the "utils" directory and is a time code
>generator used mostly for testing decoders
>
>On Wed, Dec 15, 2010 at 8:46 PM, Bruce Lane <kyrrin at bluefeathertech.com>
>wrote:
>>        I must not have made myself clear. I certainly plan to use the
>development environments on my PC. That is, after all, why I loaded up AVR
>Studio and the IAR packages.
>>
>>        Can you provide a link for the NTP thing you mention?
>>
>>        Thanks.
>>
>> *********** REPLY SEPARATOR  ***********
>>
>> On 15-Dec-10 at 20:27 Chris Albertson wrote:
>>
>>>On Wed, Dec 15, 2010 at 6:23 PM, Bruce Lane <kyrrin at bluefeathertech.com>
>>>wrote:
>>>>        ..... I'll be learning both C and AVR assembler as I go along,
>>>but the way I learn best is to actually DO something with programming ...
>>>
>>>I agree with the last part.  Learn by doing some real project.   But
>>>no the first part.  The best platform for learning is a "full size"
>>>computer with a real OS on it.  Programming a micro-controller s MUCH
>>>harder than programming a LInux desktop machine.  I've done both,
>>>pretty much full time now for 30 years.   In fact if I want to get
>>>something to run on an AVR in C I will write and mostly debug the code
>>>as much as I can on the big Linux computer.  The  there are some
>>>simulators too.  Of course you have to move to the target hardware as
>>>some point but it is always best if you plan the project so that you
>>>can delay that time.
>>>That is one of the major advantages of the AVR over PIC, the AVR works
>>>well with C so you can to more of the work on the bigger computer.
>>>Getting back to the time code project.  Do look at the generator in
>>>NTP.  Run it on the desktop and study the code
>>>
>>>
>>>--
>>>=====
>>>Chris Albertson
>>>Redondo Beach, California
>>>
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>>
>> -=-=-=-=-=-=-=-=-=-=-=-
>> Bruce Lane, Owner & Head Hardware Heavy,
>> Blue Feather Technologies -- http://www.bluefeathertech.com
>> kyrrin (at) bluefeathertech do/t c=o=m
>> "Quid Malmborg in Plano..."
>>
>>
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>
>
>-- 
>=====
>Chris Albertson
>Redondo Beach, California
>
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-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"Quid Malmborg in Plano..."