clock reference/RTC during deep sleep?

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Anonymous
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Hi there,

following the discussion board and by testing the rtc_sample, I've been trying to figure out wether the BCM20737 does support any clock reference during deep sleep (HID off) without an external crystal. So far, I've found one success reports and several questions in the same direction. However (from my own experience also) there is no way to have a ticking clock during deep sleep. Can somebody confirm this? Or suggest a solution that does not require external components?

cheers,

-phil

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Anonymous
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Figured out what my problem/misunderstanding was. rtc_init() zeroes the RTC unconditionally, so removing this call and just using the rtc "un-initialiazed" works fine. The RTC also ticks in deep-sleep from the internal 128kHz resonator. Not sure what rtc_init()  is for, but problem solved. Thanks.

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