PCF8523 not working with Itsy Bitsy M4 Express

[AC5Me]

Hi. I'm using the instructions from the Adafruit website with the recommended RTClib library but I'm seeing strange behavior. The RTC will set the time but after a power cycle it will lose it even though the coin cell battery is showing 3V0.

Any tips?

Thanks!

[adafruit_support_carter]

Are you running CircuitPython or Arduino on the Itsy?

[AC5Me]

Arduino IDE and bootloader updated. Thanks.

[adafruit_support_carter]

If you run this the example sketch back to back, without a power cycle, it only shows the "RTC is NOT initialized, let's set the time!" on the first run? But if you then power cycle, the message comes back?

This is the example sketch for ref:
https://github.com/adafruit/RTClib/blob ... cf8523.ino
which is the same one mentioned in the guide:
https://learn.adafruit.com/adafruit-pcf ... th-arduino

[AC5Me]

My apologies, it turned out I was still using the old declaration from the ds1307. Which was kinda working, close but not close enough!

Thanks,
Jim

[adafruit_support_carter]

Ah, cool. No worries. Just glad it was something simple.