[Bug 1192] unknown reason cause TI GSM modem always return "+CME ERROR: 512"

bugzilla-daemon at bugzilla.openmoko.org bugzilla-daemon at bugzilla.openmoko.org
Mon May 19 20:56:37 CEST 2008


mickey at openmoko.org changed:

           What    |Removed                     |Added
             Status|REOPENED                    |RESOLVED
         Resolution|                            |WONTFIX

------- Additional Comments From mickey at openmoko.org  2008-05-19 20:56 -------
Ok, I just managed to get to this state again. I did multiple sequences of
at+cops=? followed by cancelling (sending any other character) the command. It
seems the AT interpreter or firmware state machine inside the modem just hangs
somewhere undefined.

Additional remarks:
* There does not seem to be a concrete way to trigger this state. It seems
unrelated to any sequence of commands. It's just that commands with long
execution time seem to trigger it more often.
* It also happens in MUXing mode and it only renders one channel unusable. The
other channels still work as expected.
* There does not seem a way to recover from this state. Even closing and
reopening the virtual channel does not fix the problem. Even waiting one hour
does not fix the problem. The only way to recover is doing a modem power cycle.

Since the TI Calypso is end-of-life it's highly unlikely that someone will look
into this problem. Since it occurs very rare and also can be detected by a good
parser (which could then transparently trigger the modem power cycle), I'll
close this as WONTFIX.

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