At 04:20 PM 2/14/2014, d0ct0r wrote:
hours is the same, but seconds and minutes has changed. Is there any method to read all three values (HH:MM:SS) by one single requests ? Or is there any other workaround for this issue ? Or it is not issue at all ? Thanks !
Sure, read multiple registers (0-2 to get seconds, minutes, and hours) in one IIC transaction. The chip will even help you out, as according to the datasheet:
"When reading or writing the time and date registers, sec- ondary (user) buffers are used to prevent errors when the internal registers update. When reading the time and date registers, the user buffers are synchronized to the internal registers on any START and when the register pointer rolls over to zero. The time information is read from these secondary registers, while the clock contin- ues to run. This eliminates the need to reread the regis- ters in case the main registers update during a read." -- newell N5TNL _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
