User Guide

Table Of Contents
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LMU-3x40 Training Guide
Revision & Date
1.6 – 03/24/2021
4.5 Log File
Engineering and LMU logs can be found in the Linux file system. You can find the most recent log
file in a specific
/var/log/ directory, in a file named messages
If you would like to view new information that is written to this log file, Linux offers a way to do
this through the command line.
Enter: tail –F /var/log/messages
This command will open the messages file and display the latest written lines of the file. It will
continue to display the most updated lines you quit.
Helpful Tip: Linux allows the option to create multiple instances of SSH windows so you can have
one SSH session viewing a log while the other is being used to send AT commands. Other Linux
options such as parsing specific debug using a grep command can also be utilized. For example,
the command:
tail F /var/log/messages | grep VBU will display lines in the log that have VBU in
the string.
Important Note: The log file stored in ‘messages’ gets overwritten on every device wake-up.
4.6 Backup Logs
There is a method to store a current log file into a backup directory. This can be programmed in
the PEG Script by using
PEG Action 144.
PEG Action 144 modifier 1 will save the current log into the /data/backup/ folder
PEG Action 144 modifier 2 will save the current log and also send it to the set remote debug
server defined in param 2328.
Important Note: Only one backup file can be stored at a time
4.7 File Components
Devices have several components on the EdgeCore platform that are provisioned at the factory.
These components are described below:
File
Description
~Size
LMU Delta Image
This image includes Modem and GPS software in
addition to Application software.
On the LMU-3240, this file also packages Bluetooth and
Wi-Fi images.
12-18Mb
VBU Firmware
Also known as “OBD firmware” which contains the
software that handles vehicle bus protocol and
message handling
500Kb
PEG2 Script
This file controls and defines all the business logic and
configuration settings on the device. PEG2 script file
sizes will vary from application to application
50-150Kb (avg)
BLE Image
The BLE image for the LMU-3040 is separate from the
LMU delta image.
150Kb