tpiepho@gmail.com said: > Forget about accurate time from the RTC's registers. The slowness and > variably in I2C is quite poor and most of them don't even have sub-second > resolution when read or written. If your RTC has a PPS output, you can read the registers to get the coarse time, then wait for the PPS to tick to get the low order bits. -- These are my opinions. I hate spam.