Cannot read mangOH green board information from Legato while connecting

Legato Linux distribution (Yocto project)
1

Hello all,

Testing the new device of mangOH green development board with an extremely simple HelloWorld sample code. After defining the connection, I tried to connect the connection with the actual target device. But the error message occurs saying " ‘Refresh properties of xxxx’ has encountered a problem", where xxxx is the connection name.

The details of this error are as follows:

Cannot retrieve hardware type
Cannot retrieve CPU info
Cannot retrieve hostname
Cannot retrieve framework version

The radio module that I used is WP8548. The Legato is installed on a virtual machine of Ubuntu 16.04.

What could be wrong?

2

I think you might be hitting a known issue with modemmanager package. It seems to knock out the ecm interface that provides a network device to the development PC from the WP module. Try to run sudo apt-get remove --purge modemmanager and reboot the VM.

3

I tried your solution but it does not solve the problem. The same error message still occurs. The communication between the PC and the module is good since I can manage to ping the module.

4

Hi @lichen

Please can you check your DS version, and share the DS workspace log here?
(<workspace>/.metadata/.log file)

5

Hi Daav. I today found the DS is too old to support the Legato framework on the WP module. Thanks anyway.

6

Hi @lichen
Please note that you can upgrade DS, even if installed in a VM.