I'm not much of an expert here, but it looks like Android 2.3 is using /dev/alarm as its RTC interface. See system/core/toolbox/alarm.c and frameworks/base/libs/utils/SystemClock.cpp for example. Neither of these, however, define functions used to get the current date and time so it's not a great answer to your question. Android's AlarmManager uses the RTC to wake the device out of sleep at a given time.
gettimeofday() seems to be defined here: bionic/libc/arch-arm/syscalls/gettimeofday.S But that *still* doesn't answer your question. Toolbox's "date" command uses a call to time() to get the local time, which must be the same thing Android uses. See system/core/toolbox/date.c. But I'm running out of luck tracking down the source code for that function call. HTH to get you started. - Topher On Sunday, June 16, 2013 3:21:50 PM UTC-6, cha...@gmail.com wrote: > > Hi All, > I'm working on porting* android (2.3.3)* to some arm device and on that > device I have two different *Real Time Clocks (RTCs)*. First one comes > from processor and the second comes from PMIC. > In my system I see them in the path* /sys/class/rtc/rtc0* > and*/sys/class/rtc/rtc1 > *. > > On default Android system time is taken from the first RTC (rtc0). What is > more, setting time and date in Android Settings changes exactly that clock. > > I want to switch it to the second clock. I know how to do it from one > direction - how to set system time from rtc1 (compile parameter for > kernel), but I don't know how to change RTC standing behind* Settings -> > Change Date and Time* option in user interface. In other words, I want to > change time and date from user interface of second RTC (rtc1, not rtc0 as > in default). > > How can I do it? > > Thanks for help. > > chaqi > > -- -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-porting+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
