Hi,
I require sub-second accurate time keeping on my OMAPL138. The RTC module can only give me time down to a second; ideally I would like to be able to read the RTC-counter register in addition to the seconds register, but I cannot find any documentation that shows whether this is possible and if so, how? Can anyone give me clarification on this?
If it is not possible, I could implement a timer to keep track of time between seconds. The problem with this is that the timer must either be fed from the internal auxiliary clock or an external clock. There is no space to connect another crystal and I am not sure how fixed the frequency of the auxiliary clock is. This leads me to two questions:
How fixed is the frequency of the auxiliary clock feeding the timers?
Is there a way through internal multiplexing to duplicate the RTC 32kHz clock signal to also feed the timers?
Any answers/suggestions will be appreciated.
Regards,
Reino