[time-nuts] Motorola Oncore UT+ firmware upgrade & backup power questions

Bob Camp kb8tq at n1k.org
Sun Jun 21 07:41:20 EDT 2015


Hi

I think there is some confusion here between the almanacs / ephemeris and the 
firmware. The Oncore saves the most recent GPS information (almanac and ephemeris) 
in RAM. If that’s battery backed up, it re-loads it at boot. The firmware is in flash memory. 
Re-programming the flash is (at best) a “return to vendor” process. Given how long the 
parts have been out. There is no guarantee that any given part will have enough silicon to
handle this or that rev of the firmware. 

Bob

> On Jun 20, 2015, at 7:06 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> 
> gigneil at gmail.com said:
>> I didnt see this well answered - the device loads firmware at each start
>> cycle.  If i am not mistaken you can even use ntp. 
> 
> I just scanned the ntp source code for the Oncore driver.  I didn't see any 
> hints of loading firmware.  There is code to read the firmware version.
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
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