[Gta04-owner] Polling CLCC error handling on Option modem (GTA04)

Dr. H. Nikolaus Schaller hns at goldelico.com
Tue Mar 6 21:36:48 CET 2012


Am 06.03.2012 um 22:30 schrieb Radek Polak:

> On Tuesday 06 March 2012 20:17:32 Dr. H. Nikolaus Schaller wrote:
> 
>> @Radek: is it possible to manually contact the AT interface in this state
>> and try if it is still operational and another AT+CLCC would succeed?
> 
> It seems after few errors it starts working again - if i understand it right 
> (see log below). Btw the probability of +CME ERROR increases with smaller CLCC 
> interval.

To me this looks like a 5 seconds or so "blind" interval where +CLCC fails...

> So ingoring the error and trying again is the way to go for us?

I would say yes - at least for the moment. We may also read out
the modem firmware version to do it only for the current one.

This is IMHO much easier than changing the modem (which is
quite expensive and a technical and logistical nightmare since
the modem is soldered to the board) and thinking about
field-upgrades of firmware.

BR,
Nikolaus

> 
> Regards
> 
> Radek
> 
> AtChat :  F : "+CLCC: 1,1,4,0,0,"+420608828973",145" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CLCC: 1,1,4,0,0,"+420608828973",145" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CLCC: 1,1,4,0,0,"+420608828973",145" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CLCC: 1,1,4,0,0,"+420608828973",145" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CME ERROR: 100" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CME ERROR: 100" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CME ERROR: 100" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "+CME ERROR: 100" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK" 
> AtChat :  T : "AT+CLCC" 
> AtChat :  F : "OK"



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