Introduction

The overall structure of DLT is as follows:

DLT Daemon is a background service program; DLT Library is a dynamic library that users need to connect to when using DLT; DLT Client is an upper computer program used to display logs, such as DLT viewer program. The connection between these three components is shown in the figure below.

DLT viewer is compiled by QT. It is a graphic program with rich functions. You can also add plug-ins.

DLT Viewer compilation

Detailed compilation referencehttps://github.com/GENIVI/dlt-viewerThe description in can. First install the qt-opensource-windows-x86-5.12.4 program, then open and double-click the BuildDltParser.pro file in the dlt-viewer-master directory.

The cross section after operation is as follows:

use

dlt viewer connects to dlt daemon via TCP, UDP and serial port.

At the same time, pay attention to the configuration (dlt.conf) on the dlt daemon side.

The dlt daemon listens to port 3490 by default. If you need to change it, you need to modify the DLT_DAEMON_TCP_PORT macro of the dlt daemon.

The configuration related to the serial port is as follows:

########################################################################
# Client Serial port configuration                                     #
########################################################################

# Additional support for serial device
# If a device name is set serial port is enabled.
# RS232DeviceName = /dev/ttyS0

# Serial device baudrate (Default: 115200)
# RS232Baudrate = 115200

# Sync to serial header on serial connection
# RS232SyncSerialHeader = 1

It is generally difficult for embedded devices to have a fixed IP. It is very inconvenient to connect to the daemon through TCP through dlt viewer. For this situation, we can establish a channel between the device and the host computer through TCP, and then dlt viewer and daemon pass the Channel to communicate.

related resources

dlt viewer