On 2/4/20 2:23 AM, Christophe Huygens wrote:
Hi,
I need a sync pulse every minute at start of minute, aligned with UTC time
(let's not discuss what UTC time really is :-)). Any quick assessment whether
uBlox TIMEPULSE out can do this?
It does not seem to be a problem to generate a pulse every minute based on
UBX-CFG-TP5, but how can this be aligned with a minute. Is the only solution to
query time eg every top of second to see if minute has started?
I can parse this out of the GPS data even by polling but this seems ... not
elegant.
A few 10s of millsecond after exact start of minute would be fine. Thoughts?
Target CPU is very limited, say ATmega328. Or none at all if it can be avoided.
I think parsing the message might be the easiest way, unless they happen
to have provided it as a feature in the output pulse configuration. The
parsing code would trivially fit in a tiny CPU - you're basically
looking for zero in the right place.
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