I am planning to design my own custom base board for
Col VF61 which will run
Angstrom. My application requires the use of time including
milliseconds. Currently I have
Iris Carrier board which has the option of CMOS battery to save the values of time when the power is turned off. But I am confused, angstrom takes time from its own kernel time or from the external RTC in iris board.
If it is fetching time from external RTC which is
M41T0M6 then how it is calculating time in milliseconds. In my base board if I use external RTC, then do I have to do I2C communication to use the time or is it possible to use linux own time and just use CMOS battery. Please help.