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RPi-RTC-DS3231-0.02
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Changes for version 0.02 - 2026-06-22

  • Fixed setMonth() to store the month in BCD (was raw binary); months 10, 11 and 12 were written as illegal BCD (0x0A-0x0C) and corrupted the calendar/rollover on the chip
  • Fixed setHour() 12-hour mode to store the hour in BCD (same raw-binary bug as setMonth())
  • Fixed getTemp() to sign-extend the temperature MSB so sub-zero temperatures decode correctly
  • Routed all BCD time/date register I/O through new setBcdField() / getBcdField() helpers, with masks per the DS3231 datasheet, so the raw-vs-BCD encoding can no longer diverge
  • Added a simple BCD codec sanity check (t/01-bcd-encoding.t) and worst-case raw-register guards in t/40-month.t / t/15-hour.t that fail on the old raw write and pass on the BCD write; tightened t/50-temp.t to assert the DS3231 operating range. The comprehensive, exhaustive proof lives in the rpi-wiringpi test platform

Modules

RPi::RTC::DS3231
Interface to the DS3231 Real-Time Clock IC over I2C

Other files