Ok, but if you feel like going back to the faulty one, setting the alarm 
register will show you if the RTC is doing what it should internally and 
the data read from it is wrong (unless you make an error in programming the 
alarm registers that is ;) ).

/Martin

On Thursday, 3 January 2019 01:41:52 UTC+1, gregebert wrote:
>
> For now I'm going to hold off on any experiments that require 
> code-changes. I'll keep this RTC chip online for additional experiments; 
> known-good RTC will go into the second board-set.
> It appears the alarm registers are testable with software; I dont have the 
> INT/SQW pin connected in my system.
>
> I'm really itching to get the NIMO lit-up and running. So close to 
> actually firing it up, but I wont attempt that unless everything is 100% 
> stable. Mindset is that I have only 1 chance to get it right and it must be 
> right the first time. Anything that can go wrong and remain uncorrected for 
> more than a few milliseconds is assumed to result in a dead NIMO tube, and 
> I only have 1. 
>
>
>

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