Huawei EM770W SIM card issues

Huawei EM770W SIM card issues

[Florian Mayer]

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Hello,

we encountered the following problem with the EM770W: If the SIM card is 
plugged in after our test system is powered on, it is not recognised in 
ofono. Even if we restart ofonod after plugging in the SIM card. We use 
the 2.6.35~rc5 kernel from Meego 1.1 trunk because we encountered 
problems in the option driver with Kernel 2.6.33.3 (the communication 
got stuck from time to time). For ofono we use the latest 0.26 and for 
connman 0.55.

Is this a bug relted to ofono or a limitation of the Huawei hardware?

Regards
Florian Mayer
Mayer Electronics

RE: Huawei EM770W SIM card issues

[Zhang, Zhenhua]

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Hi Florian,

Florian Mayer (Mayer Electronics) wrote:
> Hello,
> 
> we encountered the following problem with the EM770W: If the
> SIM card is
> plugged in after our test system is powered on, it is not
> recognised in
> ofono. Even if we restart ofonod after plugging in the SIM
> card. We use
> the 2.6.35~rc5 kernel from Meego 1.1 trunk because we encountered
> problems in the option driver with Kernel 2.6.33.3 (the communication
> got stuck from time to time). For ofono we use the latest 0.26 and
> for connman 0.55. 
> 
> Is this a bug relted to ofono or a limitation of the Huawei hardware?

I watch oFono chat with EM770W modem. If I restart ofonod after plugging
in the SIM card. We have:

ofonod[7871]: Pcui:< \r\n^SYSINFO:1,0,1,5,255,,4\r\n\r\nOK\r\n
ofonod[7871]: Pcui:> AT+CGMI\r
ofonod[7871]: Pcui:< \r\nhuawei\r\n\r\nOK\r\n
ofonod[7871]: Pcui:> AT+CGMM\r
ofonod[7871]: Pcui:< \r\nEM770W\r\n\r\nOK\r\n
ofonod[7871]: Pcui:> AT+CGMR\r
ofonod[7871]: Pcui:< \r\n11.126.08.01.00\r\n\r\nOK\r\n
ofonod[7871]: Pcui:> AT+CGSN\r
ofonod[7871]: Pcui:< \r\n357030020291346\r\n\r\nOK\r\n
ofonod[7871]: Pcui:< \r\n^BOOT:20291346,0,0,0,20\r\n

ofonod[7897]: Pcui:< \r\n^RSSI:15\r\n\r\n^SRVST:1\r\n
ofonod[7897]: Pcui:< \r\n^MODE:5,4\r\n

However, if I powered on modem with SIM card inserted, I have:

ofonod[7960]: Pcui:> AT+CGSN\r
ofonod[7960]: Pcui:< \r\n357030020291346\r\n\r\nOK\r\n
ofonod[7960]: Pcui:< \r\n^RSSI:1\r\n
ofonod[7960]: Pcui:< \r\n^BOOT:20291346,0,0,0,20\r\n
ofonod[7960]: Pcui:< \r\n^MODE:3,3\r\n\r\n^SIMST:1\r\n
ofonod[7960]: Pcui:> AT+CRSM=176,28590,0,0,1\r
ofonod[7960]: Pcui:< \r\n^SRVST:2\r\n\r\n^MODE:3,3\r\n
ofonod[7960]: Pcui:< \r\n+CRSM: 144,0,"03"\r\n\r\nOK\r\n
ofonod[7960]: drivers/atmodem/sim.c:at_crsm_read_cb() crsm_read_cb: 90, 00, 1
ofonod[7960]: Pcui:> AT+CPIN?\r
ofonod[7960]: Pcui:< \r\n+CPIN: READY\r\n\r\nOK\r\n
ofonod[7960]: drivers/atmodem/sim.c:at_cpin_cb() crsm_pin_cb: READY

So looks like Huawei modem doesn't send us ^SIMST unsolicited
notification in the first case.

> Regards
> Florian Mayer
> Mayer Electronics
> _______________________________________________
> ofono mailing list
> ofono(a)ofono.org
> http://lists.ofono.org/listinfo/ofono

Regards,
Zhenhua