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telit / arduino-tlt-library

GNU Lesser General Public License v2.1
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New board, updated libraries, nothing works ... but transparent bridge! #6

Open Humancell opened 2 years ago

Humancell commented 2 years ago

Hello,

I'm back with a brand new board, and I'm getting the same results as my first Charlie board. None of the example applications are working, but I am able to get the transparent bridge working and can send AT Commands to the modem.

It seems that maybe there is a configuration that you are expecting, and maybe some other commands must be sent first?

I thought of one thing right away which is that I am using a Twilio Super SIM - Global Roaming SIM. Is there anything with this modem that would prevent the modem from working out of the box with a roaming SIM?

Are there a base set of AT Commands I ought to be able to enter to get the modem to connect, or to investigate what might be occurring?

Also, have you considered added a real deep debug mode to your library that would display every AT Command and Response to the console? It would be really good to see exactly what is being sent, in what order, and what responses are coming back. If your library provided this in the function that actually interacts with the serial port it would quickly identify where the failure is occurring.

Humancell commented 2 years ago

Here are some additional interesting issues I noticed related to the SIM:

AT#QSS?

QSS: 0,1

OK

AT#SIMDET?

SIMDET: 2,1

OK

AT#SIMPR?

SIMPR: 0,0,1

SIMPR: 0,1,0

OK

T#CCID ERROR

AT#ICCID ERROR

AT#SPN {hangs the modem ..."}

The SIM works fine in other modules.

Humancell commented 2 years ago

Is there any way to get some more rapid support on these issues? I've now spent months trying to get this board working, and have made NO progress. I was told it was a bad board, but it was not. There are other issues going on with your Charlie board or firmware. I have a SIM that works just fine in anything else I put it in, but the Charlie does not recognize it.

Help!!