Hello, maybe interesting: The current the GSM modem draws while in "Deep Sleep" is ca. 120 uA, if it is in "Big Sleep", the current is ca. 5.5 mA. This does not say much how long the battery will last if "Deep Sleep" or "Big Sleep" is used. It depends on several other things like the power consumption of the rest of the system or how long the GSM modem can actually sleep (cell parameter, could be ca. 0.5 to 2.1 seconds).
BTW, I found a different register setting which seem to control the current of the 32 kHz oscillator. However I don't have the documentation for our variant of the Calypso chip. So I can only guess or try the possible values of this register. I can measure a difference of about 10 uA in "Deep Sleep" mode between using what I think means the lowest and highest current. Best regards, Dieter _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
