Hello Joerg, Joerg Reisenweber wrote:
> Hmm this sounds like there actually *is* sth we can use for this purpose. Is > it (the RTC) disabled by default on OM's version of FW, or what's the issue > with it? Or is this RTC an external component that's just clocked by > calypso's 32kHz. Still it would be interesting to enable such an external > clock as it maybe would stop the constant disabling/enabling of calypso's > 32kHz clock generator. > I will check if there is anything which could be used. Its not that easy because we don't have all the source code which is evolved. Additionally I am not sure if a RTC is driven by the 32KHz oscillator only. It could be done similar to how it is done now, if the Calypso sleeps, the 32kHz oscillator is used, otherwise the main oscillator. The accuracy requirements for GSM are rather strict, so even without the 32 kHz oscillator the running system surely can handle the timing for a RTC. Best regards, Dieter _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
