I’m trying to get LTE connection with a CM7700 (initially on a Raspberry Pi, and I actually try on my Windows 10 computer).
The CM7700 is pluged into a base Hat LTE for raspberry which works on USB.
Currently, I’ve entered my pin code, and now there is “No service” message on Skylight application.
The APN is set correctly (Orange France, APN : orange, username : orange, password : orange)
I don’t understand why it doesn’t work, and how to make it to work…
Is someone can help me ?
(sry for bad english…)
Can you check the following AT command?
Sure, there is the result :
Manufacturer: Sierra Wireless, Incorporated
Revision: SWI9200X_03.05.29.03ap r6485 CNSHZ-ED-XP0031 2014/12/02 17:53:15
IMEI SV: 23
3GPP Release 8
Current Time: 1095 Temperature: 22
Bootup Time: 1 Mode: LOW POWER MODE
System mode: Unknown PS state: Not attached
GMM (PS) state:NULL ---
MM (CS) state: NULL ---
Even on my Raspberry with qmicli command, modem seems to be always in Low Power Mode …
you need to power on the modem by “AT+CFUN=1”
BTW, is the APN correct in +CGDCONT?
When I sent “AT+CFUN=1”
I got a “ERROR”.
No, the APN isn’t correct in AT+CGDCONT?
While I did set the APN in Skylight and in the Windows settings.
how about this?
State: 0 (LPM)
LPM force flags - W_DISABLE:0, User:0, Temp:0, Volt:1, Auth:0
Poweroff mode: 1
LPM Persistent: 0
it shows voltage problem
Not sure if AT!PCVOLTLIMITS can help to overcome this problem, you can double check
AT!PCVOLTLIMITS also result to “ERROR”…
The PCI-E adapter is powered directly on USB by my computer.
Even when it’s powered on USB by the Raspberry, the same problem appear (stuck on Low Power Mode)
Do you know if I do something bad ?
what did you see for “AT!PCVOLTLIMIOTS?”
then maybe the adaptor has voltage problem
My bad, I’ve past the command with your typing error LIMIOTS ^^
There is the result of AT!PCVOLTLIMITS? :
HI CRIT: 3600
HI NORM: 3500
LO NORM: 3100
LO WARN: 3000
LO CRIT: 2900
not sure if you can adjust these values to make it work
you can give a try
How can I do that ?
I’m newbie in modem & first time I work with AT commands,
We’re normally developer but we’re helping our customer to make its project work…
you might need to see the state diagram to adjust it
Is there a way to get actual voltage ?
you need to use multimeter to measure those pins
With the AT!PCVOLT?, I get the actual voltage :
Volt state: High Critical
Power supply voltage: 3827 mV (148 cnt)
When I try to change the voltage limit, with : AT!PCVOLTLIMITS=4000,3900,3500,3400,3300
I got error…
Do you know how I can change voltage limit ?
did you enter AT!ENTERCND=“A710” before entering that command?
I suggest you to change the adaptor as it seems this will damage the modem.