1 -------------------------------------------------------------------------------
2 Maxim Integrated DS3231 RTC
3 -------------------------------------------------------------------------------
6 - DS3231 datasheet: https://datasheets.maximintegrated.com/en/ds/DS3231.pdf
12 The logic analyzer used was Geeetech Mini Board Cypress FX2(LP) eval board
13 with fx2lafw firmware (at 4MHz):
16 -------------------------
22 ----------------------
24 The file provides reading/writing of time keeping registers as well as
25 control, control/status and temperature registers of the RTC chip, which
26 was setup to 24-hours mode:
28 - Read Control register
29 - Write Control register - disable alarms
30 - Read Control/Status register
31 - Write Control/Status register - clear alarm's flags
32 - Write Alarm 1 registers - set Alarm 1 at every 1st date
33 - Write Alarm 2 registers - set Alarm 2 at every minute
35 - Read temperature (MSB)
39 ----------------------
41 The file provides reading/writing of time keeping registers as well as
42 control/status and temperature registers of the RTC chip, which was setup
43 to 24-hours mode and after Alarm 2 occured:
45 - Read Control/Status register
46 - Write Control/Status register - clear alarm flag
48 - Read temperature (MSB)