Hi guys,

with a customer we are currently implementing a Telit LE 910 Module for 4g mobile network connection. We can sell some pieces with that solution, so I think that I can make a step-by-step guide for the forum if we will have success.

Togheter with the customer we contacted Telit support, but when we try to install on Yocto Example Image V 2.1.3. we get some errors.

Investigating with the technical support of Telit,  seems that the problem is the missing of the module cdc_acm

If I understand well searching on forum and internet is that I have to build a new image integrating this module. What I want to ask is:

• I basically want to maintain the same feature of our Siemens current Example Image, but adding this cdc:acm in order to connect on a mobile network. I have to use the meta-iot2000.example, simply add cdc_acm and generating a new image? I never done a new build of an image, and even if I read the Github meta-iot2000 page I don't understand well how to do it.
• How can I implement also a module for ntp server synchronization? we also need this for some time precision data. I can add another module to the meta-iot200-example?

Thank you 

Davide

Both features are present in the upcoming image that you can already build from the github repository. I'm not sure at the moment if that will be enough to get your modem running, though. Maybe you will need some userspace tools in addition - another reason then to build your own image.

Building an image is not as hard as it may seem. You just need a standard Linux installation with Docker support (that is the easier path, in contrast to "native build"), can also be inside a VM, and follow the related instructions in the README. Report issues along this path here. And be patient, the first build will take hours.

Conceptually, building the image via Docker should also work with Docker support for Windows. But I haven't heard of anyone trying this so far, and at least I would not be able to explain what goes wrong in case something does not work.

Ok, I have:

- builded up the new image using meta-iot2000-example

- mounted with dd on a sd

- tested and now after  modprobe cdc_acm I can see the driver with lsmod

In the next days I will test the image with customer and TELIT board.I will update this topic with the progress.

About building image:

- How I can copy the .wic file in order to send it to customer? When I copy the file from /home/MyUser/build/tmp/deploy/images/iot2000 the file size become 55bytes, so I think that it's not the right way to copy it.

Thanks

iot2000-example-image-iot2000.wic is a symbolic link. Follow it to get the real file ("cp -L" e.g.).

You will likely also want to compress that image. With xz, you can get below 200 MB while the original file is almost 2 GB.

Good morning guys,

Telit device is already cofigured by ncm driver that is installed in the immage offered by Ing. Maffei.

I attached you NCM PROTOCOL USER GUIDE.

Actually I am in contact with an operator of Vodafone to configure the network.

I can bring you all up.

Have a nice evening.

Claudia Rossati

Hi guys,

The minipcie Telit LE910 LTE on IoT 2040 works correctly. If you have some problem with configuration please don't hesitate to contact me. 

I wish you well in your work

Claudia 

Hi Claudia,

where is the link to the yocto image offered by Davide Maffei ?

Thank you.

cocoa

He claudia,

i try to use he910-D can you help me?