Ds1307

Newzed

My program for the DS1307 calls for the entering of the time/date parameters as decimals, then converting the decimals to BCD before I2COUT, and converting the BCD to decimals after I2CIN.

If I enter the time/date parameters in a HEX2 format, can I eliminate the decimal/BCD and the BCD/decimal conversion process?

Sid

Jon Williams

Yes ... though the conversions are not difficult with PBASIC:

· hexVal = (decVal / 10 << 4) + (decVal // 10)
· decVal = (hexVal.NIB1 * 10) + hexVal.NIB0

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Jon Williams
Applications Engineer, Parallax
Dallas Office

AlWilliamsAWC

Hi Sid,

Did you look at this month's project of the month? http://www.awce.com/som.htm

Al Williams
AWC

Newzed

Jon Williams said...
Yes ... though the conversions are not difficult with PBASIC:

· hexVal = (decVal / 10 << 4) + (decVal // 10)
· decVal = (hexVal.NIB1 * 10) + hexVal.NIB0

Thanks, Jon.

Sid

Newzed

Al Williams/AWC said...
Hi Sid,

Did you look at this month's project of the month? http://www.awce.com/som.htm

Al Williams
AWC

I just did.· Thanks, Al

B Ward

Where can I purchase a DS1307 ???

thanks, bward

Bruce Bates

Mr. Ward -

In the future you can answer your own question by using the resources of this handy search engine: http://www.findchips.com/ . Presently Mouser, Digikey, and a number of other supplier are showing stock. You can also purchase or ask for samples of, any of the Maxim/Dallas Semiconductor parts right from their web site: http://www.maxim-ic.com/ .
They have always been quite generous with their sample policy.

Regards,

Bruce Bates