On 2021-11-12 10:37, Rob Kossler wrote:
Thanks Jonathon,
This morning, I discovered that after writing the file system image
with bmaptool,
* if I immediately pull the SD card from the host card reader and
insert it into the E310, it boots up ok
* If I instead pull the SD card and re-insert it right away in the
host card reader (to force auto-remount), do nothing, then click
to eject the SD card and insert in the E310. It does not boot up!
The host (Ubuntu 20.04) must do something to the SD card by simply
mounting and ejecting the SD card. Perhaps it has something to do
with the Data partition being an expandable partition?
Any ideas on this? The reason for wanting to re-mount the SD card in
the host system right away is to configure the
/data/network/eth0.network interface to change it from DHCP to Static
IP. At first I speculated that re-writing this file on the host was
causing the issue, but later I determined that just the mount/eject
sequence causes the problem.
Also, any ideas on how I can fix the "date/time" so that it doesn't
always come up "Aug 6"?
Rob
So, there's a DS1139 RTC chip, which is an garden-variety RTC chip used
in designs all over the place. The linux rtc-1307 kernel driver knows
about this chip.
HOWEVER, it requires a battery to maintain time, and near as I can tell,
the only battery in the E310 universe is with the E312 "UPS" battery. I
don't see any evidence
that there's a separate, small, back-up battery for the RTC in the
plain E310.
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