7-segments with DS1307

newpic · Joined: 09 Aug 2005 Posts: 32

Hello to everyone,

Does anyone know of a method in which I can use to send the
information received from a DS1307 RTC into their individual digits, so
that I can place these digits on their respective 7-Segment Led Displays.

I have four 7-Segment Led displays and would like to display the time on
these. But I don't know how to single out the individual digits after the
information is received from the DS1307.

Any advice or suggestions would be grately appreciated.

I am limit to C and PIC, If you could give more detail or example code
would be gradely appreciated.

Mark · Joined: 07 Sep 2003 Posts: 2838 Location: Atlanta, GA

Hum... as I recall the data is BCD so it should be easy. Each nibble would be a digit.

Guest · Posted: Fri Aug 26, 2005 9:18 am

Any simple example?

Thanks..

Mark · Joined: 07 Sep 2003 Posts: 2838 Location: Atlanta, GA

There is already code posted for DS1307. That code will allow you to read the registers from the DS1307. We have no idea how you are driving your 7 segment LEDs but if you know how to display a number then it should be trivial to display the time.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Just do a web search with http://www.google.com for this string:
ds1307 CCS segment OR segments

http://www.rentron.com/CCS_C/SERLED_C.htm

Source code for this one is at the bottom of the page:
http://www.sixca.com/eng/articles/clock/