This is a pure Micropython DS1302 RTC Clock driver. This is based on microbit code of microbit-lib https://github.com/shaoziyang/microbit-lib

This has been tested and working on ESP32 but should work with any micropython supported device.

(Adapted from https://github.com/shaoziyang/microbit-lib/blob/master/misc/DS1302/README.md)

DS1302 is real-time clock (RTC) with serial interface, 31 * 8 data ram.

• start()
  start RTC.

• stop()
  stop/pause RTC

• DateTime(DT = None)
  get / set DateTime. If no paramter given, it will return current datetime, otherwise it will set datatime.
  datatime format: [Year, month, day, weekday, hour, minute, second]

• Year(year = None)
  get / set year.

• Month(month = None)
  get / set month.

• Day(day = None)
  get / set day.

• Weekday(weekday = None)
  get / set month.

• Hour(hour = None)
  get / set hour.

• Minute(minute = None)
  get / set minute.

• Second(second = None)
  get / set second.

• ram(reg, dat = None)
  get / set ram data (31 bytes).

from machine import Pin
import DS1302

ds = DS1302.DS1302(Pin(5),Pin(18),Pin(19))

ds.DateTime()
ds.DateTime([2018, 3, 9, 4, 23, 0, 1, 0])

ds.Hour()
ds.Second(10)