Release Date: May 8, 2018

See Licenses to view Legato AF Licensing Information.

The following provides a summary of changes that have been made in the 18.04 Legato AF Release.

Download the source code and get started with building Legato AF.

New Features

The following are the list of new features that have been added into the 18.04 Release:

Documentation

18.04 includes changes to our documentation including:

• new information on systems and mksys
• new tutorials for systems and updates
• improved documentation on the update and rollback process
• reorganized documentation in the concepts section

sdef Improvement

New features have been added to the System Definition .sdef to be able to set search paths within the sdef for apps, and components the same way that you could already do with interfaces. You now have the ability to include the search path from within the sdef instead of having to provide it to mksys via the -s flag on the command line.

Alpha Features

The following are the list of features that have been added into the 18.04 Release but are still in a testing phase and should not be used on production targets:

Multiple SIM Support

The framework now contains support for multiple embedded SIM profiles and the ability to switch between the multiple SIMs and be managed by a subscription management server such as AirVantage.

Fixed Issues

All development work is tagged in GitHub as "18.04.0". The list of changes and commit messages can be found on GitHub.

• Legato AF 18.04.0 Fixes

Note

This is only the list of fixes for the Application Framework and Platform Services, for the list of changes in the Platform Adapters and AVC Service view the commits under the tag 18.04.0 in the individual repositories on GitHub.

Known Issues

Constraints and Limitations

Dev Machine Linux Version

To develop applications within the Legato Application Framework, a current supported Long Term Support version of Ubuntu Linux is required on your dev machine (or running in a virtual box on Windows). Ubuntu 16.04 is the current recommended version to use on your dev machine.

ECM-USB modem manager issue

Ubuntu 15.10 and newer has Modem Manager version 1.4.12-1ubuntu1 installed by default which conflicts with the ECM-USB driver when connecting a target. Modem manager may cause the Ubuntu Network Manager to crash on your host and/or your target device to become unavailable over USB.

Symptoms:

• NetworkManager crashing when plugging into your device over USB, or
• The target device becomes inaccessible after 30 seconds.

Recommended Work Around:

• Uninstall modemmanager from Ubuntu or
• Downgrade modemmanager to version 1.0.0-2ubuntu1

Sierra Wireless Toolchain Install

There is currently an error with setting up the WP76XX and WP77XX toolchain and the toolchain only partially installs. The part of the script to install and setup the kernel headers does not run and produces the following errors:

scripts/kconfig/Makefile:36: recipe for target 'silentoldconfig' failed
make[2]: *** [silentoldconfig] Error 1
Makefile:546: recipe for target 'silentoldconfig' failed
make[1]: *** [silentoldconfig] Error 2
make: *** No rule to make target 'include/config/auto.conf', needed by 'scripts'.  Stop.

To resolve this remove the installed toolchain and reinstall with sudo privileges.

Example of setting up the toolchain for a 64bit dev machine and a WP76 module with product release 9:

$ rm -rf /opt/swi/y22-ext
$ sudo poky-swi-ext-glibc-x86_64-meta-toolchain-swi-ext-armv7a-neon-toolchain-swi-ext-2.2.3.sh

Copyright (C) Sierra Wireless Inc.