I have a Rev 1 Bitsy X board plugged into a Rev A CF companion board. I have noticed that the RTC is not persistent over a reset or power down. The voltage of the coin cell battery on the companion board is 3.3V. Is there a jumper or a setting in software I need to set?
Hi David. You can find a list of the changes between rev 1 and 2 of the BitsyX in the final chapter of the user manual. It's posted at topic 884.
The manual is in final review right now, but we posted the preliminary draft to give our customers the latest information. Rev 2 boards have just started shipping in preliminary volume.
I have run across some strange behavior with the RTC and system time. All reads/writes of the system time are done through calls to Get/SetSystemTime. If the RTC losses power, it is reset and the date is set back to 1980. The first call to SetSystemTime after the RTC resets works correctly. However, the second call to SetSystemTime causes 1 hour to be subtracted. All subsequent calls function correctly until the RTC looses power again. Any ideas as to what might be causing this behavior.