My Blackberry gives me several options for time, including the option to sync from the network on cue, but it will only display the current time with a resolution of 1 minute. There may be 3rd party apps that do better, I have not looked, but I am a little miffed that the phone does not have a standard option to display the time with 1 second resolution on the main display.
This is time-nuts for Heaven's sake!!! Didier ------------------------ Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Pieter ten Pierick <time-nuts-m...@tenpierick.com> Date: Wed, 17 Feb 2010 12:32:24 To: Discussion of precise time and frequency measurement<time-nuts@febo.com> Subject: Re: [time-nuts] iPhone app Hi, On 17 Feb 2010, at 07:37, Thomas A. Frank wrote: > I don't believe that there is a 1pps available to the OS. > > The GPS chipset seems to provide a very limited amount of data to > the phone. For example, there does not appear to be any way to get > satellite status info from the GPS chip to the OS. At least none > of the apps I've tried thus far (and I've tried a fair number) > provide anything like that. The iPhone OS provides an 'Location Manager' that will (try to) provide a location based on available hardware and environment: The hardware might not have a GPS (Early iPhone, iPod touch) or you might be indoors. The system will try to get a location using WiFi access points (Skyhook Wireless) and/or Cell tower triangulation and GPS if available and determines heading based on either a compass or position differences. I would assume that the GPS hardware provides the satellite information, but to abstract the used method, the Location Manager does not provide the satellite info. For the average consumer it is not really interesting, they just want to know where they are... However: I am disappointed that my iPhone, although: - Having a GPS - Having a data connection usable for (S)NTP - Is a participant in the cell phone network - Sometimes connected via USB to iTunes for syncing content and performing a backup is still not displaying the correct time. (Not even having a 'Set Now' button...) Using the location even the time zone can be set, although the user might want to override that one to stay in sync with home. But for (modern) cell phones to not have a notion of the correct time is disappointing... All my previous cell phones had the same problem: Present in the GSM network, but you still have to set the time. As I synchronize my calendar with the desktop, they will both give an alert for an appointment, but they have a delta of many seconds... Hoping this will be fixed in iPhone OS 4.0... Grrr, Pieter. > > Tom Frank > > > On Feb 17, 2010, at 12:23 AM, Jim Palfreyman wrote: > >> Hi all, >> >> Having recently acquired a new iPhone with a built in GPS, I was >> wondering >> if anyone is aware of an application that uses the GPS 1PPS to >> produce >> accurate time. I seem to remember reading somewhere that it is not >> possible >> to adjust the internal clock, but one could still produce an >> accurate time >> display based on the GPS 1 PPS and even provide time pips. Combine >> that with >> the internal video there seems a myriad of possibilities. >> >> However, trying to find such applications is a large effort and I >> was hoping >> the time-nuts community may be aware of some time-aware >> cleverness on the >> iPhone. >> >> Regards, >> >> Jim Palfreyman >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/ >> listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/ > time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.