[time-nuts] An embedded NTP server

[Don Latham]

Yay for Forth!
Don

M. Simon
> The design I'm working on brings out the UART pins to a header. I am
> designing adapter boards for RS-232 (using a MAX232 type equivalent) or
> USB using the FT232RL chip for the USB interface. There will also be an
> I2C interface for a display (16X2 to start with) or what have you. (more
> serial ports is one option)
>
>
> The code base is not going to be critical because I'm using Forth rather
> than C. I am no fan of C. And neither is my software guy who at one time
> managed 5,000 AT&T programmers. The Forth is going to be pretty
> primitive to start with (assembler macros). But we may turn it into a
> full blown Forth as time goes on. When the first round is done and
> working we will publish a complete design (schematics and code - with
> bare boards available at a nominal cost).
>
>
> I like the LPC111x series because of its very low cost. I do have plans
> to move up to some of the higher series chips once this design is done -
> if I can figure out how to solder chips by hand that have pins on .5mm
> ctrs. Currently I can solder chips with .65 mm lead spacing without too
> much trouble.
>
>
> Simon
>
>  
> Engineering is the art of making what you want from what you can get at
> a profit.
>
>
>
>>________________________________
>> From: Poul-Henning Kamp <phk at phk.freebsd.dk>
>>To: M. Simon <msimon6808 at yahoo.com>; Discussion of precise time and
>> frequency measurement <time-nuts at febo.com>
>>Sent: Tuesday, January 1, 2013 9:26 PM
>>Subject: Re: [time-nuts] An embedded NTP server
>>
>>--------
>>In message
>> <1357073110.35421.YahooMailNeo at web160905.mail.bf1.yahoo.com>, "M. Si
>>mon" writes:
>>
>>>The NXP LPC111x series [...]
>>
>>My personal preference is the LPC1343, because it has a USB port, and
>>because there is a reltively nice codebase to start from:
>>
>>    https://github.com/microbuilder/LPC1343CodeBase
>>
>>--
>>Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
>>phk at FreeBSD.ORG         | TCP/IP since RFC 956
>>FreeBSD committer       | BSD since 4.3-tahoe   
>>Never attribute to malice what can adequately be explained by
>> incompetence.
>>
>>
>>
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-- 
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
De Erroribus Medicorum, R. Bacon, 13th century.
"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com