Other Parts Discussed in Thread: TM4C1233H6PM
The TM4C1233H6PM datasheet contains two mentions of a "RTC calendar mode". In section 7.3.5 Real-Time Clock:
And in the description of RTC Trim Value in the Hibernation RTC Trim (HIBRTCT) register in page 492:The RTC can operate in seconds counter mode or calendar mode.
The rest of the datasheet only mentions the RTC operating in seconds counter mode, so a guess the RTC calendar mode isn't implemented and therefore shouldn't be mentioned in the datasheet?RTC Trim ValueThis value is loaded into the RTC predivider every 64 seconds in RTC counter mode. In calendar mode, the value is loaded every 60 seconds. It is used to adjust the RTC rate to account for drift and inaccuracy in the clock source. Compensation can be adjusted by software by moving the default value of 0x7FFF up or down. Moving the value up slows down the RTC and moving the value down speeds up the RTC.
