Re: Randomly SMS sent passes or fails

[Denis Kenzior <denkenz@gmail.com>]

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Hi Anthony,

>
> Any comments ? :(

Nope, the logs looked fine.

>
> Before, I tested with 1.6.
>
> And, today, I tried with 1.12.
>
> And, I've got some troubles at modem power up... During the 3 first
> start, ofono was blocked after sending a command. Here 2 pastes :
>
> ------------------------------
> [...]
> ofonod[13400]: drivers/atmodem/cbs.c:at_cbs_set_topics()
> ofonod[13400]: Data: > AT+CSCB=0,"4352-4356"\r
> ofonod[13400]: Data: < \r\nOK\r\n
> ofonod[13400]: Data: > AT+CRSM=192,28437\r
> ofonod[13400]: Data: < \r\n+CRSM: 106,130,""\r\n\r\nOK\r\n
> ofonod[13400]: Data: > AT+CRSM=192,28436\r
> ------------------------------
>

No idea, it just stops responding

> ------------------------------
> [...]
> ofonod[10387]: src/network.c:ofono_netreg_status_notify() /simcom_0
> status 1 tech -1
> ofonod[10387]: src/cbs.c:cbs_location_changed() 1, -1, -1, -1, (null)(null)
> ofonod[10387]: Data: > AT+CRSM=192,28480\r
> ofonod[10387]: Data: < \r\n+CRSM: 144,0,""\r\n\r\nOK\r\n
> ofonod[10387]: drivers/atmodem/sim.c:at_crsm_info_cb() crsm_info_cb: 90,
> 00, 0
> ofonod[10387]: Data: > AT+CMGF=?\r
> ------------------------------
>

Ditto

> As you can see, It's not always at the same moment. After that, I can't
> send AT command anymore, the modem seems to be locked.
>
> I try to debug this and found the CMUX and CMUXSRVPORT ports. I can have
> a DIAG port, so, I try to configure it. I stopped ofono, the modem and
> sent these commands :
>
> ------------------------------
> AT+CMUXSRVPORT=0, 0
> AT+CMUXSRVPORT=1, 5
> AT+CMUXSRVPORT=2, 1
> AT+CMUXSRVPORT=3, 1
>
> +CMUX=0
> ------------------------------
>
> ------------------------------
> AT+CMUXSRVPORT
> --------------
> < port >: virtual com port
> 0 – 3 currently support 4 virtual com ports index from 0 to 3
>
> < service >: valid service
> 0 – DIAG Service
> 1 – DATA(MODEM) Service
> 5 – NMEA Service
> ------------------------------
>
> And now, each time I start ofono and power up the modem, it works. No
> lock. Hum, I'm disapointed. I didn't think theses commands could fix the
> problem. And, no messages in diag or NMEA tty. Hum... And moreover, now
> all SMS I send are received. No failure. So good news, but, I'm troubled.
>
> After grepping on ofono source, I see some driver plugins do a CMUX set
> (calipso, phonesim). Maybe, I need to execute a CMUX set ??? It can be
> important ?
>

CMUX is used on devices with 1 physical serial port.  It is used to 
enter into so-called Multiplexing mode, a binary protocol that runs 
multiple logical AT ports over a single physical port.  Refer to 3GPP 
27.010.  I do not know whether your hardware supports multiplexing or 
not.  If the modem is detected with multiple serial ports, then likely 
it does not require messing with CMUX.

Regards,
-Denis