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Cinterion EHS5 (-E) device nodes | Telit Cinterion IoT Developer Community

February 1, 2021 - 8:36am, 2170 views


we are having problem with Cinterion EHS5-E modem. Device nodes are not correctly created for it after cold boot. For me it seems that the problem is related to the wrong revision number: When device (on cold boot) detects modem revision number (/bcdDevice value) 16.74, only 1 device node (/dev/ttyACM0) is created. After processor reset or software reboot the device detects modem revision number (/bcdDevice value) correctly, as it should be, 17.30, and then all 7 device nodes are created (/dev/ttyACM0-ttyACM6).

Kernel version we are using is 5.4.

Has anyone reported similar problem or do you have any ideas which could cause the issue?

Best Regards, Tuomas