piclist 2002\01\23\085050a >
Thread: Replace old chips ?
picon face BY : Russell McMahon email (remove spam text)

NMEA is utterly trivial to extract time from.
4800 baud string in a well defined format with time at a fixed location in
the string.

Here is two sets of data for a device with no satellite lock.
This is sent once per second.

$GPRMC has time in UTC as first data element (000101 and 000110 in two
readings here)
The clock can tell where it is as a bonus and eg set local time as well as
GMT !!!!

You could use this on a second by second basis or for occasional checking of
xtal clock.
.$PRWIZCH "sentence" is non standard Talon Technologies proprietary string.
Not a silly idea for a "tourist" type use - not what a sailor wants I




             Russell McMahon

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<003e01c1a408$1fcff2e0$0100a8c0@mkbs> 7bit

See also: www.piclist.com/techref/index.htm?key=replace+old+chips
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