Messages in this thread |  | | From | Juergen Borleis <> | | Subject | [PATCH] RTC/PCF85063: fix reading/setting time/date | | Date | Mon, 7 Dec 2015 14:49:31 +0100 |
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The PCF85063 RTC needs special treatment while setting or reading the time/date:
- while reading the 7 time/date registers they are blocked from updating by the one second pulse internally. So reading all time/date registers should happen in one turn to ensure reading is an atomic operation
- to let setting the time/date be an atomic operation as well, the clock dividers must be kept in reset state to avoid a one second pulse during writing the 7 time/date registers
Patch 1 and 2 change reading the time/date. I have kept them separately for easier review. Squasching both into one patch render it more or less unreadable. Patch 3 changes setting the time/date.
Comments are welcome Juergen
Please keep me on CC as I'm not subscribed to the list.
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