Hi, I have been looking for documentation on how to set up and use the EM9291 module with a host device, such as a Raspberry Pi. Do we have any documents outlining the steps to set up, configure, and test the EM9291 module via the USB interface? Additionally, could you please provide the details …

correct! your linux should already support MBIM driver, so qcserial driver in MBPL can help to enumerate the USB serial port

it is using MBIM interface. Is it OK now to set up mbim-network for data establishment? [image] EM9191 MBPL install error IoT Modules i used MBIM command to establish data connection in linux PC: owner@CNHKG-EX-001367:~/legato/workspace/git/mangOH_2-7-2019$ …

Hi @jyijyi Yes I am using mbim only but getting error. root@imx8mp:~# dmesg | grep -i cdc [ 1.809915] usbcore: registered new interface driver cdc_ether [ 1.821743] usbcore: registered new interface driver cdc_ncm [ 1.827440] usbcore: registered new interface driver cdc_mbim [ 1.86…

If you ignore those error, Is it OK now to set up mbim-network for data establishment?

Hi @jyijyi , It is still not wokring. can you please share with me the exact cdc_mbim driver, config or steps to validate this module on a custom board? thanks

cdc-mbim is generic driver in linux, it is not from Semtech. You can validate the module in Ubuntu linux PC. If it works, then it is your raspberry pi board problem. BTW, other user did not find problem on MBIM interface with Raspberry pi board: [image] Problems Getting EM…

Here is another user who can make it work on raspberry pi board with EM9293: [image] Can I connect to the internet if my modem is in Factory Test Mode? MC/EM Series Thanks! So for my raspberry pi, I had to run the lite-qmi-nasarm binary for it to work (not nas…

Hi @jyijyi , I can get the module function with mbim driver but with the qmi driver. I am still facing issues. There is no wwan interface with qmi driver. Thanks, Arti

Qmi communication also works in mbim interface

If I use the qmi driver from the semtech website. I do not see any wwan0 device. I can only see the wwan interface with mbim driver CDC_MBIM driver. Also if I use both the drivers I get similar issues: [image] EM7421 failed in NETDEV WATCHDOG: wwan0 (cdc_mbim): transmit que…

[image] arti.rajput: If I use the qmi driver from the semtech website. I do not see any wwan0 device. I can only see the wwan interface with mbim driver CDC_MBIM driver. did you set correctly in AT!USBCOMP? [image] arti.rajput: Also if I use both the drivers I get similar issues: Fro…

Setting up EM9291 Module

IoT Modules

jyijyi October 27, 2025, 2:04am 15

Here is another user who can make it work on raspberry pi board with EM9293:

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Setting up EM9291 Module

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