-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Attila Kinali wrote: > Moin, > > I have a little bit more general question than usual. I have here a > system that should be deployed in Joe Average's house as a small > appliance. While it is powered it will gather information and store > them on its flash. > > Now, this system does not contain a battery backed RTC (not enough > space) and thus does not know what date/time it is after boot. At a > later time the device will be able to get a time quote from a time > server using a wireless connection. But as the wireless connection > is triggered by a user action, it can happen hours after boot. This > means that there is a quite long period whithin which the device > does not know what time it is and hence assumes it's 1970. > > My problem lies now in the back jumps that the device makes, when > unplugged and replugged. On the filesystem there will be files from > 2007, while the system still thinks it's 1970. > > How do you handle this issue with the back jumps, if you cannot > stick in a batter backed RTC? > > > Thanks for your help > > Attila Kinali Be creative or use the battery, you could for example set a timestamp in a file at shutdown and use it to set the date on power up, alas this would be incorrect, so go for the battery. - -- _______________________________________ Mr Markus Gothe Software Engineer Phone: +46 (0)13 21 81 20 (ext. 1046) Fax: +46 (0)13 21 21 15 Mobile: +46 (0)73 718 72 80 Diskettgatan 11, SE-583 35 Linköping, Sweden www.27m.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGCoAR6I0XmJx2NrwRCNbtAJ9jMBSxe0WOvv3o844TCqbHKbmgOwCeNmOR Uot4Bwa7+EYx3/8b7h4bVcM= =X6k4 -----END PGP SIGNATURE-----
