[Bug 1380] GSM modem sleeps on virtual channels in MUX

bugzilla-daemon at bugzilla.openmoko.org bugzilla-daemon at bugzilla.openmoko.org
Mon May 12 21:03:45 CEST 2008


------- Additional Comments From mickey at openmoko.org  2008-05-12 21:03 -------
Multiple automated tests now confirm that the enter the sleep individually per
virtual channel, however once the first channel has been woken up
(either by receiving an unsolicited response or a command that is terminated
with \r\n [which will receive no response]), all virtual channels wake up.

Until we have a proper fix, I will work around this by using a dedicated
KeepAlive channel that keeps the modem alive (sic!) :(

I would consider one of the following solutions as a proper fix from the side of
the modem, with c) being the most wanted solution, a) or b) being acceptable and
d) being the very last resort.

a) stop sleeping on virtual channels and receive act on PSC wakeup, or
b) stop sleeping on virtual channels and send PSC sleep command, or
c) a) + b)
d) continue sleeping on virtual channels, but accept a special AT wakeup command
that does not send 'OK' if the modem is already woken up.

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