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How do you add cdc-acm driver to yocto build with connect core 6 SBC?

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I am looking to send AT commands to the Digi cellular modem while using a PPP connection. The modem manager is unable to create the AT command port because there is no CDC-ACM driver to create the serial interface.

How would I add this driver to my Yocto build? From what I understand, it is supposed to be installed as part of the kernel modules, however, I can't seem to find it.

I have tried adding the following to my local.conf file with no success.

- CORE_IMAGE_EXTRA_INSTALL += " kernel-modules"
asked May 4, 2020 in Other/Legacy by Tec_Dev New to the Community (1 point)

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1 Answer

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I have fixed the problem by establishing a USB direct connection.


It makes sense this wouldn't work over serial. The USB drivers create the two virtual serial ports (TTYACM0 and TTYACM1), one is used by the PPP connection and I can use the other to run my own commands.

I am now in the process of enabling the PPP connection. I'm running into some issues when running the "udevadm trigger" command (see link above). I will update this post once I figure it out.

answered May 13, 2020 by Tec_Dev New to the Community (1 point)