On 20 April 2015 at 14:07, William A. Mahaffey III <wam%hiwaay.net@localhost> wrote:
Ahhhh, I wasn't aware of that (offsets in usec.), that helps. I do have a
DS3231 clock chip on my RPiB+, although someone else mentioned that it is
not (yet) supported. Does NetBSD-7 write system time to whatever saves time
on the mbd on poweroff ? It seems that when I have a power burp that gets
the RPi, it comes back up w/ pretty good time right away, even w/ no
internet available ....
How different is the protocol to the DS1307? I have my DS1307 talking
to NetBSD by creating a config file RPI_RTC:
include "arch/evbarm/conf/RPI"
no options MODULAR
no options MODULAR_DEFAULT_AUTOLOAD
dsrtc* at iic1 addr 0x68
options USBVERBOSE # verbose USB device autoconfig messages