raspberrypi: RTC: Ensure a time is set #4379
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tannewt
previously approved these changes
Mar 11, 2021
Until a time is set, the RTC is not running, and rtc_get_datetime() returns false without assigning to the out-parameter. In CircuitPython, this would manifest as arbitrary values being returned, since uninitialized storage on the stack was being converted into a timestamp.
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@tannewt I had to update the branch so I'll need a re-review. thank you! |
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@microdev1 I don't know, I would think that after |
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Until a time is set, the RTC is not running, and rtc_get_datetime() returns false without assigning to the out-parameter.
In CircuitPython, this would manifest as arbitrary values being returned by
rtc.RTC().datetime, since uninitialized storage on the stack was being converted into a timestamp.After this change, the RTC starts on January 1, 2020. I think this is the same epoch as the other ports.