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avaldebe / UxTClib

ctime clock library for ESP8266 and ESP32
MIT License
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PCF8563 support #2

Closed avaldebe closed 6 years ago

avaldebe commented 7 years ago

The Adafruit RTClib (forked) has been tested on the exp8266, but does not support PCF8563 RTC. The JeeLabs RTClib (original) supports the PCF8563 RTC, but do not know if will work on the exp8266.

avaldebe commented 6 years ago

As far as I can tell the PCF8523 and PCF8563 share the same date/time registers but have a different address, 0x68 and 0x51 respectively. Therefore the a simple copy/paste of the RTC_PCF8563 class might be enough.

avaldebe commented 6 years ago

Not quite the same registers, the PCF8523 resister set starts with 3 control registers (0x00 to 0x02) and the PCF8563 starts with 2 control registers (0x00 to 0x01).

avaldebe commented 6 years ago

For this application I only need to:

I could implement this as generic RTC functions wich take an enum to distinguish the different RTC ICs. Each RTC ICs needs definitions for its I2C address and the seconds register (1st register on date/time). Other than that, the check/read/write should be identical.