PBP 2.50 and Longs

Hi,
I'm currently using PBP 2.47 and Byte Arrays to get data from a GPS. This works OK but doing any maths is compicated.

Am I right in thinking that if I upgrade to PBP 2.50 and use an 18F that I can read a 7 digit number as an integer and then do maths on it.

Eg: If I want to read 3557.1542361. Can I use:

LATDEG VAR WORD
LATMIN VAR LONG

SERIN2 RXPIN, 16468,[DEC4 LATDEG, DEC7 LATMIN]

If it works as easily as this is it possible to have more accarate trig and SQRT functions as well.

Thanks for anyy help.

Mike

Quote:

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Originally Posted by mikendee

Am I right in thinking that if I upgrade to PBP 2.50 and use an 18F that I can read a 7 digit number as an integer and then do maths on it.
Eg: If I want to read 3557.1542361. Can I use:
LATDEG VAR WORD
LATMIN VAR LONG
SERIN2 RXPIN, 16468,[DEC4 LATDEG,,".", DEC7 LATMIN]
If it works as easily as this is it possible to have more accarate trig and SQRT functions as well.

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The accuracy won't improve any, since PBP only handles straight integer numbers, doesn't do anything with fractions.
However, you can multiply the numbers up a bit, say by 10000, then work on them.
You'll end up with a simulated decimal point at 1/10000...but you'll have to correct for that when displaying/sending that data.
That probably won't help any with SIN/COS and SQRT functions at all unless you start getting creative with your math.