Huawei E176 - not online

Huawei E176 - not online

[Florian Steinel]

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Hi,

I can't get my Huawei E176 USB Stick into the online state.

Maybe commit cc6a43c477c1310643279139ba6808799a8c637e removed to much code?
(rssi_notify)

OFONO_AT_DEBUG=1 ofonod -n -d '*' 2>atlog
./enable_modem

./list-modem output:
[ /huawei0 ]
    Features = sim 
    Powered = 1
    Interfaces = org.ofono.SimManager 
    Online = 0
    Model = E176
    Manufacturer = huawei
    Serial = ***************
    Revision = 11.104.14.01.55
    [ org.ofono.SimManager ]
        Present = 0



atlog output:

ofonod[15261]: oFono version 0.25
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,2,0,25\r\n
ofonod[15261]: Pcui:> ATE0\r
ofonod[15261]: Pcui:< \r\n^RSSI:99\r\n\r\n^SRVST:0\r\n\r\n^MODE:0,0\r\n\r\n^RSSI:10\r\n\r\n^SRVST:1\r\n\r\n^MODE:5,4\r\n\r\n^BOOT:********,0,0,0,25\r\n\r\nOK\r\n
ofonod[15261]: Pcui:> AT+CFUN=1\r
ofonod[15261]: Pcui:< \r\nOK\r\n
ofonod[15261]: Pcui:> AT^SYSINFO\r
ofonod[15261]: Pcui:< \r\n^SYSINFO:1,0,1,5,0,,4\r\n\r\nOK\r\n
ofonod[15261]: Pcui:> AT+CGMI\r
ofonod[15261]: Pcui:< \r\nhuawei\r\n\r\nOK\r\n
ofonod[15261]: Pcui:> AT+CGMM\r
ofonod[15261]: Pcui:< \r\nE176\r\n\r\nOK\r\n
ofonod[15261]: Pcui:> AT+CGMR\r
ofonod[15261]: Pcui:< \r\n11.104.14.01.55\r\n\r\nOK\r\n
ofonod[15261]: Pcui:> AT+CGSN\r
ofonod[15261]: Pcui:< \r\n***************\r\n\r\nOK\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n

Florian Steinel

Re: Huawei E176 - not online

[Denis Kenzior]

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Hi Florian,

> I can't get my Huawei E176 USB Stick into the online state.
> 

You won't be able to get into Online state unless your SIM is present.
<snip>

> atlog output:

oFono huawei driver determines sim presense in two ways: ^SIMST:1
unsolicited notification, and by querying the ^SYSINFO.
> 
> ofonod[15261]: oFono version 0.25
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,2,0,25\r\n
> ofonod[15261]: Pcui:> ATE0\r
> ofonod[15261]: Pcui:< \r\n^RSSI:99\r\n\r\n^SRVST:0\r\n\r\n^MODE:0,0\r\n\r\n^RSSI:10\r\n\r\n^SRVST:1\r\n\r\n^MODE:5,4\r\n\r\n^BOOT:********,0,0,0,25\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:> AT+CFUN=1\r
> ofonod[15261]: Pcui:< \r\nOK\r\n
> ofonod[15261]: Pcui:> AT^SYSINFO\r
> ofonod[15261]: Pcui:< \r\n^SYSINFO:1,0,1,5,0,,4\r\n\r\nOK\r\n

According to Huawei docs, the 5th field is the SIM presence state.  The
above is telling us it isn't present.

> ofonod[15261]: Pcui:> AT+CGMI\r
> ofonod[15261]: Pcui:< \r\nhuawei\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:> AT+CGMM\r
> ofonod[15261]: Pcui:< \r\nE176\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:> AT+CGMR\r
> ofonod[15261]: Pcui:< \r\n11.104.14.01.55\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:> AT+CGSN\r
> ofonod[15261]: Pcui:< \r\n***************\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,0,0,25\r\n
> 

It sounds like your firmware never sends us the SIMST unsolicited
notification.  Can you check whether after sending CFUN=1, few seconds
later ^SYSINFO goes to 1?  See plugins/huawei.c for more details.

Regards,
-Denis

Re: Huawei E176 - not online

[Florian Steinel]

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Hi Denis,
>> I can't get my Huawei E176 USB Stick into the online state.
>> 
>
>You won't be able to get into Online state unless your SIM is present.
><snip>
>
>> atlog output:
>
>oFono huawei driver determines sim presense in two ways: ^SIMST:1
>unsolicited notification, and by querying the ^SYSINFO.
>> 
>> ofonod[15261]: oFono version 0.25
>> ofonod[15261]: Pcui:< \r\n^BOOT:********,0,2,0,25\r\n
>> ofonod[15261]: Pcui:> ATE0\r
>> ofonod[15261]: Pcui:< \r\n^RSSI:99\r\n\r\n^SRVST:0\r\n\r\n^MODE:0,0\r\n\r\n^RSSI:10\r\n\r\n^SRVST:1\r\n\r\n^MODE:5,4\r\n\r\n^BOOT:********,0,0,0,25\r\n\r\nOK\r\n
>> ofonod[15261]: Pcui:> AT+CFUN=1\r
>> ofonod[15261]: Pcui:< \r\nOK\r\n
>> ofonod[15261]: Pcui:> AT^SYSINFO\r
>> ofonod[15261]: Pcui:< \r\n^SYSINFO:1,0,1,5,0,,4\r\n\r\nOK\r\n
>
>According to Huawei docs, the 5th field is the SIM presence state.  The
>above is telling us it isn't present.

http://www.bez-kabli.pl/printview.php?t=20735&start=0
(Since i do not speak polish, I've used translate.google.com)
The 5 field (the state of the SIM card)
0 - invalid SIM card or PIN code blocked
1 - normal SIM card
2 - SIM card not valid in CS mode
3 - SIM card not valid in PS mode
4 - SIM card not valid in PS or CS mode
255 - SIM not present 

The SIM is present, but still PIN code blocked.
The notify_sim_state function needs be changed.

pseudo code:
 If sim_state == 0 then 
   if 'AT+CPIN?' returns 'CPIN: SIM PIN' then
     sim_state = 'present but sim locked'
   else
     sim_state = 'invalid SIM'
   endif
 else if sim_state == 255 then
   sim_state = 'SIM not present'
 endif

<snip>
>
>It sounds like your firmware never sends us the SIMST unsolicited
>notification.  Can you check whether after sending CFUN=1, few seconds
>later ^SYSINFO goes to 1?  See plugins/huawei.c for more details.
>

I don't see any ^SIMST:1 or ^SYSINFO message.

Regards,
Florian

[PATCH 1/1] (RFC) Huawei: Modify ^SYSINFO logic

[Florian Steinel]

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---
 plugins/huawei.c |  114 +++++++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 105 insertions(+), 9 deletions(-)

diff --git a/plugins/huawei.c b/plugins/huawei.c
index cfc693d..c14b076 100644
--- a/plugins/huawei.c
+++ b/plugins/huawei.c
@@ -57,12 +57,22 @@
 
 static const char *none_prefix[] = { NULL };
 static const char *sysinfo_prefix[] = { "^SYSINFO:", NULL };
+static const char *cpin_prefix[] = { "CPIN:", NULL };
+
+enum my_sim_state {
+	SIM_STATE_INVALID_OR_PIN_BLOCKED = 0,
+	SIM_STATE_NORMAL_SIM_CARD = 1,
+	SIM_STATE_SIM_NOT_VALID_IN_CS_MODE = 2,
+	SIM_STATE_SIM_NOT_VALID_IN_PS_MODE = 3,
+	SIM_STATE_SIM_NOT_VALID_IN_CS_OR_PS_MODE = 4,
+	SIM_STATE_SIM_NOT_PRESENT = 255
+};
 
 struct huawei_data {
 	GAtChat *modem;
 	GAtChat *pcui;
 	struct ofono_sim *sim;
-	gint sim_state;
+	enum my_sim_state sim_state;
 	struct ofono_gprs *gprs;
 	struct ofono_gprs_context *gc;
 };
@@ -101,19 +111,105 @@ static void huawei_debug(const char *str, void *user_data)
 	ofono_info("%s%s", prefix, str);
 }
 
-static void notify_sim_state(struct ofono_modem *modem, gint sim_state)
+static void notify_sim_state(struct ofono_modem *modem, enum my_sim_state sim_state)
 {
 	struct huawei_data *data = ofono_modem_get_data(modem);
 
-	if (data->sim_state == 0 && sim_state == 1) {
-		ofono_sim_inserted_notify(data->sim, TRUE);
-		data->sim_state = sim_state;
-	} else if (data->sim_state == 1 && sim_state == 0) {
-		ofono_sim_inserted_notify(data->sim, FALSE);
-		data->sim_state = sim_state;
+	switch (sim_state) {
+	case SIM_STATE_INVALID_OR_PIN_BLOCKED:
+		if (data->sim_state != sim_state) {
+			/* TODO copy code from mbm.c function init_simpin_check and ff */
+			ofono_sim_inserted_notify(data->sim, TRUE);
+		}
+
+		break;
+
+	case SIM_STATE_NORMAL_SIM_CARD:
+		if (data->sim_state != sim_state) {
+			ofono_sim_inserted_notify(data->sim, TRUE);
+		}
+
+		break;
+
+	case SIM_STATE_SIM_NOT_VALID_IN_CS_MODE:
+		if (data->sim_state != sim_state) {
+			ofono_sim_inserted_notify(data->sim, FALSE);
+		}
+
+		break;
+
+	case SIM_STATE_SIM_NOT_VALID_IN_PS_MODE:
+		if (data->sim_state != sim_state) {
+			ofono_sim_inserted_notify(data->sim, FALSE);
+		}
+
+		break;
+
+	case SIM_STATE_SIM_NOT_VALID_IN_CS_OR_PS_MODE:
+		if (data->sim_state != sim_state) {
+			ofono_sim_inserted_notify(data->sim, FALSE);
+		}
+
+		break;
+
+	case SIM_STATE_SIM_NOT_PRESENT:
+		if (data->sim_state != sim_state) {
+			ofono_sim_inserted_notify(data->sim, FALSE);
+		}
+
+		break;
+
+	default:
+		break;
 	}
+	data->sim_state = sim_state;
 }
 
+/*
+ *
+ * SYSINFO = a,b,c,d,e,f
+ *
+ * a :
+ *   0 - no network access 
+ *   1 - limited access to the network 
+ *   2 - normal access to the network 
+ *   3 - limited access to networks in your area 
+ *   4 - Power saving mode 
+ * b:
+ *   0 - no access to the call date 
+ *   1 - only the circuit switching 
+ *   2 - only the packet switching 
+ *   3 - PS + SC 
+ *   4 - had not registered 
+ * c:
+ *   0 - registered in your home network 
+ *   1 - registered in roaming 
+ * d:
+ *   0 - no network access 
+ *   1 - APMs 
+ *   2 - CDMA 
+ *   3 - GSM / GPRS 
+ *   4 - HDR 
+ *   5 - WCDMA 
+ *   6 - GPS 
+ * e:
+ *   0 - invalid SIM card or PIN code blocked 
+ *   1 - normal SIM card 
+ *   2 - SIM card not valid in CS mode 
+ *   3 - SIM card not valid in PS mode 
+ *   4 - SIM card not valid in PS or CS mode 
+ * f:
+ *   0 - no network access 
+ *   1 - GSM mode 
+ *   2 - GPRS 
+ *   3 - Mode EDGE 
+ *   4 - WCDMA mode 
+ *   5 - HSDPA mode 
+ *   6 - HSUPA mode 
+ *   7 - mode HSPA 
+ *   8 - HSPA + mode
+ *
+ */
 static void sysinfo_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct ofono_modem *modem = user_data;
@@ -277,7 +373,7 @@ static int huawei_enable(struct ofono_modem *modem)
 		return -EIO;
 	}
 
-	data->sim_state = 0;
+	data->sim_state = SIM_STATE_SIM_NOT_PRESENT;
 
 	g_at_chat_send(data->pcui, "ATE0", none_prefix, NULL, NULL, NULL);
 
-- 
1.7.1

Re: [PATCH 1/1] (RFC) Huawei: Modify ^SYSINFO logic

[Marcel Holtmann]

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Hi Florian,

>  plugins/huawei.c |  114 +++++++++++++++++++++++++++++++++++++++++++++++++----
>  1 files changed, 105 insertions(+), 9 deletions(-)
> 
> diff --git a/plugins/huawei.c b/plugins/huawei.c
> index cfc693d..c14b076 100644
> --- a/plugins/huawei.c
> +++ b/plugins/huawei.c
> @@ -57,12 +57,22 @@
>  
>  static const char *none_prefix[] = { NULL };
>  static const char *sysinfo_prefix[] = { "^SYSINFO:", NULL };
> +static const char *cpin_prefix[] = { "CPIN:", NULL };
> +
> +enum my_sim_state {
> +	SIM_STATE_INVALID_OR_PIN_BLOCKED = 0,
> +	SIM_STATE_NORMAL_SIM_CARD = 1,
> +	SIM_STATE_SIM_NOT_VALID_IN_CS_MODE = 2,
> +	SIM_STATE_SIM_NOT_VALID_IN_PS_MODE = 3,
> +	SIM_STATE_SIM_NOT_VALID_IN_CS_OR_PS_MODE = 4,
> +	SIM_STATE_SIM_NOT_PRESENT = 255
> +};

Using my_ prefix is not really an option ;)

Anyhow, I think using #define here is as good. So just use define and
leave it as gint sim_state in the source.
 
>  struct huawei_data {
>  	GAtChat *modem;
>  	GAtChat *pcui;
>  	struct ofono_sim *sim;
> -	gint sim_state;
> +	enum my_sim_state sim_state;
>  	struct ofono_gprs *gprs;
>  	struct ofono_gprs_context *gc;
>  };
> @@ -101,19 +111,105 @@ static void huawei_debug(const char *str, void *user_data)
>  	ofono_info("%s%s", prefix, str);
>  }
>  
> -static void notify_sim_state(struct ofono_modem *modem, gint sim_state)
> +static void notify_sim_state(struct ofono_modem *modem, enum my_sim_state sim_state)
>  {
>  	struct huawei_data *data = ofono_modem_get_data(modem);
>  
> -	if (data->sim_state == 0 && sim_state == 1) {
> -		ofono_sim_inserted_notify(data->sim, TRUE);
> -		data->sim_state = sim_state;
> -	} else if (data->sim_state == 1 && sim_state == 0) {
> -		ofono_sim_inserted_notify(data->sim, FALSE);
> -		data->sim_state = sim_state;
> +	switch (sim_state) {
> +	case SIM_STATE_INVALID_OR_PIN_BLOCKED:
> +		if (data->sim_state != sim_state) {
> +			/* TODO copy code from mbm.c function init_simpin_check and ff */
> +			ofono_sim_inserted_notify(data->sim, TRUE);
> +		}
> +
> +		break;

No empty line needed before break here.

> +	case SIM_STATE_NORMAL_SIM_CARD:
> +		if (data->sim_state != sim_state) {
> +			ofono_sim_inserted_notify(data->sim, TRUE);
> +		}

For single line statement we don't do { }

> +
> +		break;
> +
> +	case SIM_STATE_SIM_NOT_VALID_IN_CS_MODE:
> +		if (data->sim_state != sim_state) {
> +			ofono_sim_inserted_notify(data->sim, FALSE);
> +		}
> +
> +		break;
> +
> +	case SIM_STATE_SIM_NOT_VALID_IN_PS_MODE:
> +		if (data->sim_state != sim_state) {
> +			ofono_sim_inserted_notify(data->sim, FALSE);
> +		}
> +
> +		break;
> +
> +	case SIM_STATE_SIM_NOT_VALID_IN_CS_OR_PS_MODE:
> +		if (data->sim_state != sim_state) {
> +			ofono_sim_inserted_notify(data->sim, FALSE);
> +		}
> +
> +		break;
> +
> +	case SIM_STATE_SIM_NOT_PRESENT:
> +		if (data->sim_state != sim_state) {
> +			ofono_sim_inserted_notify(data->sim, FALSE);
> +		}
> +
> +		break;

Just combining these into one might be better:

	case SIM_STATE_SIM_NOT_VALID_IN_CS_OR_PS_MODE:
	case SIM_STATE_SIM_NOT_PRESENT:

and so on.

> +
> +	default:
> +		break;
>  	}
> +	data->sim_state = sim_state;

And here I would prefer an extra empty line after the switch block.

>  }
>  
> +/*
> + *
> + * SYSINFO = a,b,c,d,e,f
> + *
> + * a :
> + *   0 - no network access 
> + *   1 - limited access to the network 
> + *   2 - normal access to the network 
> + *   3 - limited access to networks in your area 
> + *   4 - Power saving mode 
> + * b:
> + *   0 - no access to the call date 
> + *   1 - only the circuit switching 
> + *   2 - only the packet switching 
> + *   3 - PS + SC 
> + *   4 - had not registered 
> + * c:
> + *   0 - registered in your home network 
> + *   1 - registered in roaming 
> + * d:
> + *   0 - no network access 
> + *   1 - APMs 
> + *   2 - CDMA 
> + *   3 - GSM / GPRS 
> + *   4 - HDR 
> + *   5 - WCDMA 
> + *   6 - GPS 
> + * e:
> + *   0 - invalid SIM card or PIN code blocked 
> + *   1 - normal SIM card 
> + *   2 - SIM card not valid in CS mode 
> + *   3 - SIM card not valid in PS mode 
> + *   4 - SIM card not valid in PS or CS mode 
> + * f:
> + *   0 - no network access 
> + *   1 - GSM mode 
> + *   2 - GPRS 
> + *   3 - Mode EDGE 
> + *   4 - WCDMA mode 
> + *   5 - HSDPA mode 
> + *   6 - HSUPA mode 
> + *   7 - mode HSPA 
> + *   8 - HSPA + mode
> + *
> + */

Do we wanna keep this inside the source or better create doc/huawei.txt
which explains all the Huawei specific vendor codes we know about. I
think the latter might be more useful.

>  static void sysinfo_cb(gboolean ok, GAtResult *result, gpointer user_data)
>  {
>  	struct ofono_modem *modem = user_data;
> @@ -277,7 +373,7 @@ static int huawei_enable(struct ofono_modem *modem)
>  		return -EIO;
>  	}
>  
> -	data->sim_state = 0;
> +	data->sim_state = SIM_STATE_SIM_NOT_PRESENT;
>  
>  	g_at_chat_send(data->pcui, "ATE0", none_prefix, NULL, NULL, NULL);
>  

Regards

Marcel

Re: Huawei E176 - not online

[Denis Kenzior]

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Hi Florian,

<snip>

> The SIM is present, but still PIN code blocked.
> The notify_sim_state function needs be changed.
> 
> pseudo code:
>  If sim_state == 0 then 
>    if 'AT+CPIN?' returns 'CPIN: SIM PIN' then
>      sim_state = 'present but sim locked'
>    else
>      sim_state = 'invalid SIM'
>    endif
>  else if sim_state == 255 then
>    sim_state = 'SIM not present'
>  endif
> 

I keep forgetting about modems behaving differently with PIN code set.
You are of course correct.  The mbm driver does something very similar
for PIN / SIM inserted logic.  Might be a good template to follow.

Regards,
-Denis

Re: Huawei E176 - not online

[Kalle Valo]

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On 07/18/2010 01:04 PM, Florian Steinel wrote:
> Hi,
>    
Hi Florian,
> I can't get my Huawei E176 USB Stick into the online state.
>    
I'm travelling and I don't have access to my Huawei E1552 right now. But 
I'll test it as soon as I get back home.
> Maybe commit cc6a43c477c1310643279139ba6808799a8c637e removed to much code?
> (rssi_notify)
>    
Commit 6a480bb861f9a83c46368a2ee50a23f062edc207 added the same code to 
atmodem/network-registration.c, I doubt that's the cause here.
> ofonod[15261]: oFono version 0.25
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,2,0,25\r\n
> ofonod[15261]: Pcui:>  ATE0\r
> ofonod[15261]: Pcui:<  \r\n^RSSI:99\r\n\r\n^SRVST:0\r\n\r\n^MODE:0,0\r\n\r\n^RSSI:10\r\n\r\n^SRVST:1\r\n\r\n^MODE:5,4\r\n\r\n^BOOT:********,0,0,0,25\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:>  AT+CFUN=1\r
> ofonod[15261]: Pcui:<  \r\nOK\r\n
> ofonod[15261]: Pcui:>  AT^SYSINFO\r
> ofonod[15261]: Pcui:<  \r\n^SYSINFO:1,0,1,5,0,,4\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:>  AT+CGMI\r
> ofonod[15261]: Pcui:<  \r\nhuawei\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:>  AT+CGMM\r
> ofonod[15261]: Pcui:<  \r\nE176\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:>  AT+CGMR\r
> ofonod[15261]: Pcui:<  \r\n11.104.14.01.55\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:>  AT+CGSN\r
> ofonod[15261]: Pcui:<  \r\n***************\r\n\r\nOK\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
> ofonod[15261]: Pcui:<  \r\n^BOOT:********,0,0,0,25\r\n
>    
SIM doesn't seem to be ready. I would expect to see ^SIMST messages in 
the log to notify when the SIM is ready, but for some reason there 
aren't any.

Do you know what was the last commit when your modem worked? You could 
also try to bisect it, it's really easy with git.

Kalle

Re: Huawei E176 - not online

[Kalle Valo]

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On 07/21/2010 10:56 AM, Kalle Valo wrote:
> On 07/18/2010 01:04 PM, Florian Steinel wrote:
> SIM doesn't seem to be ready. I would expect to see ^SIMST messages in 
> the log to notify when the SIM is ready, but for some reason there 
> aren't any.
>
> Do you know what was the last commit when your modem worked? You could 
> also try to bisect it, it's really easy with git.

Sorry, I now noticed that this was already discussed. Please forget my 
comment :)

Kalle