17.06.0 Release Notes
Release Date: July 7, 2017
See Licenses to view Legato AF Licensing Information.
The following provides a summary of changes that have been made in the 17.06 Legato AF Release.
Download the source code and get started with building Legato AF.
Legato Application Framework Release Process
Legato AF releases are not tied to any specific module product release. Once we have released Legato AF, module vendors (like Sierra Wireless) will take the release and integrate it into their own product release.
Legato AF Release Schedule VS Module Vendor Release Schedule
Example:
- Legato AF Team posts release 17.07
- Module Vendor takes release 17.07 and builds an associated Linux Distro to create a "Legato Platform"
- Module Vendor tests and releases a "Legato Platform" with their Modem Firmware as "Product Release Y"
- Legato AF Team posts release 17.08, 17.09 and 17.010 without the Module Vendor packaging it into a Product Release. Releases are able to installed with the vendor's Product Release Y, but may not be officially supported by the Module Vendor.
- Module Vendor takes release 17.11 and creates a "Legato Platform" and "Product Release Z", and so on..
For any questions about the Product Releases please contact your Module Vendor directly.
New Features
The 17.06 release contains a few new API additions and bug fixes. GitHub contains the complete list of Legato AF 17.06.0 Fixes .
Changes API Changes
The following new APIs have been added:
- le_mrc_SetSignalStrengthIndThresholds function has been added to support setting or changing new thresholds.
- Inject UTC time function has been added to support the injecting of UTC into the location engine.
- le_gnss_GetGpsLeapSeconds function has been added to support getting the UTC leap seconds in advance.
Fixed Issues
All development work is tagged in GitHub as "17.06.0". The list of changes and commit messages can be found on GitHub.
Known Issues
Constraints and Limitations
Dev Machine Linux Version
To develop applications within the Legato AF, a Long Term Support version of Ubuntu Linux is needed on your dev machine (or running in a virtual box on Windows). Any release older then Ubuntu 12.04 is no longer supported by the Legato AF.
ECM-USB modem manager issue
Ubuntu 15.10 and newer is default installed with Modem Manager version 1.4.12-1ubuntu1
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 Download version 1.0.0-2ubuntu1 of modemmanager
Open Issues
The following is the list of known issues that still exist in Legato 17.06.0 and are currently under investigation:
Legato AF
- Apps can't share writable files with each other unless both apps are "un-sandboxed".
- Real time scheduling policies are not able to promote themselves if needed.
Config Tree
- Removing an
app
may remove anotherapps
tree if the firstapps
requires section lists the secondapp
.
Tools
app
runProc
does not work for apps running outside of a Sandbox. If you wish to runapp
runProc yourapp
must be running in a Sandbox.app
status
doesn’t have a "waiting" status if an app is waiting it gets reported as "running".configEcm
will give a confusing error message about IP's not being on the same subnet when other errors are present.
Audio API
- No sound recorded when using an Analog interface.
- Not able to resume a playback after a recording has been paused.
- "Pop" noise on
usb
audio at the end of a play or when stopping an ongoing file
Data Connection API
- "wifi client disconnect" does not release current Wifi connection
eCall API
- First tone in DTMF is often missed or has a shorter duration.
LE_ECALL_STATE_TIMEOUT_T6
is not handled when T6 expires. The timeout event is not generated in the eCall handler.- MSD transmissions fail over SMS when the FDN is locked.
- The fall-back SMS is not received during an Era-Glonass eCall session.
GPIO API
- Only one service is able to access a GPIO pin at a time
SPI API
- Driver does not support speeds lower than 960000 baud
UART API
- Modem does not support serial baud rate of 1000000
Copyright (C) Sierra Wireless Inc.