Desterline
- 21st June 2005, 13:21
Hey boys and girls,
I have a little project that handles a multiplexed LED display (timer0, assembly interrupts, ~250Hz) and it needs to read the time from a DS1994 (Maxim/Dallas iButton RTC). Problem is, if I let the interrupts run I seem to be getting garbage data from the iButton. But if I turn off the interrupts during the OWIN/OWOUT, the data's fine but I get unacceptable display flicker.
Anybody have any light they can shine on this?
Thanks,
-Denny
I have a little project that handles a multiplexed LED display (timer0, assembly interrupts, ~250Hz) and it needs to read the time from a DS1994 (Maxim/Dallas iButton RTC). Problem is, if I let the interrupts run I seem to be getting garbage data from the iButton. But if I turn off the interrupts during the OWIN/OWOUT, the data's fine but I get unacceptable display flicker.
Anybody have any light they can shine on this?
Thanks,
-Denny