/ ! @brief Simple general-purpose date/time class (no TZ / DST / leap seconds). This class stores date and time information in a

DS1307 SQW pin mode settings */

DS3231 Alarm modes for alarm 1 */

DS3231 Alarm modes for alarm 2 */

DS3231 SQW pin mode settings */

PCF8523 Timer Source Clock Frequencies for Timers A and B */

PCF8523 Timer Interrupt Low Pulse Width options for Timer B only */

PCF8523 Offset modes for making temperature/aging/accuracy adjustments */

PCF8523 INT/SQW pin mode settings */

PCF8563 CLKOUT pin mode settings */

/ ! @brief RTC based on the DS1307 chip connected via I2C and the Wire library */ /

/ ! @brief RTC based on the DS3231 chip connected via I2C and the Wire library */ /

/ ! @brief A generic I2C RTC base class. DO NOT USE DIRECTLY */ /

/ ! @brief RTC using the internal micros() clock, has to be initialized before use. Unlike RTC_Millis, this can be tuned in order to

/ ! @brief RTC using the internal millis() clock, has to be initialized before use. NOTE: this is immune to millis() rollover events. */ /

/ ! @brief RTC based on the PCF8523 chip connected via I2C and the Wire library */ /

/ ! @brief RTC based on the PCF8563 chip connected via I2C and the Wire library */ /