Hi Johan,

I am looking into something similar for the LS1021 IOT and TWR systems.  If you have found any general Linux tools that might be useful I would be interested to hear about them (possibly by direct email if discussing such things is bit off topic for this email list). 

I reached the same conclusion as you; that connecting the device over USB, PCIe and UART to with a socket that could be accesses via an application or command line should be possible.  Most Modems I was looking it used an AT command set.  I am not aware of any widely availed AT command libraries, so if further research does not reveal any I will implement the handful of commands I need in my own application code. 

I have got such a modem to work under desktop Linux as a USB device.  This seems build in to the standard Ubuntu desktop.  I can see a series of UARTs and a new Network point.  From there I have mounted the modem onto the USB port of a LS1021-TWR board and got the community build firmware to come up.  I just got back from holiday and cannot recall if I saw the new UARTs and a network device on the target.  Whether I get that working or not my next step will probably be to try getting things working with the modem connected via Mini PCI. 

Regards,

Thomas A. F. Thorne Software Engineer Net2Edge

From: meta-freescale-bounces@yoctoproject.org [mailto:meta-freescale-bounces@yoctoproject.org] On Behalf Of Lantz Johan
Sent: 30 August 2016 12:51
To: meta-freescale@yoctoproject.org
Subject: [meta-freescale] Cellular modem support for IMX7 Linux distribution

Hi,

I’m looking for any software support for a Cellular modem connected to IMX7 platform using a Linux distribution. Anyone having any knowledge about what is already supported regarding API’s and interfaces such as USB, PCIe and UART to connect an external modem with a socket that could be accesses via an application or command line. I guess that UART will be preferred and use of AT commands.

BR,

/Johan