TI Calypso enters strange state (+CMS ERROR: 512 on most reqests)

[daniel]

After suspending and resuming several times I wasn't able to call anyone anymore. Incoming calls were directed to my mailbox, *even* when my phone was awake. Other methods like RetrieveMessagebook? were answered with +CMS ERROR 512 (Failed to abort command).

[mickey]

Root cause is the Calypso Firmware, which should prevent this.

See also ​http://docs.openmoko.org/trac/ticket/1192 -- I'm going to add a workaround in the TI Calypso modem abstraction before milestone5.

[D3xter]

I flashed moko10beta2 yesterday and now I don't receive any "+CMS ERROR: 512"

[daniel]

I just got a variation of this problem. After calling out I get CMS ERROR: 512 and ERROR to all commands sent on the misc channel (Look for ATD and following lines), but I was still able to accept an incoming call (look for ATA) on the call channel.

Suspend/resume (issuing commands on the UnsolicitedChannel?) also seemed to work after that.

Note that I haven't flashed moko10beta2 yet.

[mickey]

Yes, that's expected (thanks for confirming!). As +CMS ERROR 512 is a forbidden state in the AT interpreter, it can be broken per-virtual channel.

[daniel]

Retrying with moko10 now. Would be great if this problem is fixed as it's the most annoying and reoccurring failure mode of my FR at the moment.

[daniel]

Still happens with moko10

[daniel]

It seems that issuing AT+COLP=0 in the modem initialization (instead of =1) makes this error go away (or at least appear less often). We should have a look at the init sequence anyway and check what we really need since we don't seem to rely on COLP at all.

[daniel]

Stress testing through calling continuously seems to indicate that everything is working fine. The following:

cli-framework
>>> def callstress(number, wait1=15, wait2=7):
...  tries = 0                                
...  while True:                              
...   print "Call", tries                     
...   id = gsmcall.Initiate(number, "voice")  
...   time.sleep(wait1)                       
...   gsmcall.Release(id)                     
...   time.sleep(wait2)                       
...   tries = tries + 1                       
...                                         
>>> callstress("+4953134943594196000")

Is at Call 326 now. I'll let it run for 500 calls total, but the failure is already much rarer than before.

[mickey]

Ok, without being 100% convinced that +COLP=1 is the culprit, it seems to make a difference for you guys. [d32cffd07f1a5a95ef10bfb0677bae9a9f2c9d74] disables that for the Calypso with a big fat warning. Feel free to reopen, if 512 still appears.