Chris Albertson wrote:
On Fri, Dec 3, 2010 at 12:54 PM, jimlux <jim...@earthlink.net> wrote:
Jeroen Bastemeijer - EWI wrote:
A PIC based IRIG timecode generator sounds very interesting! Would like to
build a new stand-alone IRIG-timecode generator since my Brandywine died....
I just read the source code for the irig generator that is included with NTP.
The code is not really all that complex but there are a number a cases to
handles, for "leap warnings" and such. The code handles not only irig but
also wwv/h simulation so yu could cut out half of the lines for irig only
Of course you can't use this C code on a PIC but the algoritm is there for
you to copy. And if yu are reading this list there is agood chance it's
alrady on your computer
But to build a PIC based IRIG generator you need a way to get the
absolute time of day into the PIC, the periodic interrupt can drive it
after that point and y'd get that from deviding down a frequency
reference
I can think of a couple ways to do it..
One, if you have a IRIG reader, is to just have buttons to push to step
up and down, and left and right.
I think I'd go with some sort of serial port interface, though. Maybe
you could do something takes a NMEA sentence?
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