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Subject: RTC Alarm wake up not possible

RTC Alarm wake up not possible

From: Uwe Freese <mail_at_uwe-freese.de>
Date: Sun, 28 Jul 2002 15:55:52 +0200

Hello,

I read the documentation to the M41ST84W, which (I think) is the RTC in
the recorder model. This model HAS an alarm function. But as the doc
says, the _IRQ/FT/OUT will go low on RTC alarm. This pin is not wired to
anything that could turn on the archos (see the rec_main.pdf that can be
found on the rockbox site). So a wakeup function (power on) by an alarm
time seems not possible to me.

But we could implement a record or playback auto-off by simply read the
actual time from the rtc.

See page 18 of this file:
http://www.st.com/stonline/books/pdf/docs/7530.pdf

Bye, Uwe.
Received on 2002-07-28

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